<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0121-750X</journal-id>
<journal-title><![CDATA[Ingeniería]]></journal-title>
<abbrev-journal-title><![CDATA[ing.]]></abbrev-journal-title>
<issn>0121-750X</issn>
<publisher>
<publisher-name><![CDATA[Universidad Distrital Francisco José de Caldas]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0121-750X2022000300500</article-id>
<article-id pub-id-type="doi">10.14483/23448393.18453</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Sobre la determinación del umbral del rango del factor de intensidad de tensiones y los factores que lo afectan]]></article-title>
<article-title xml:lang="en"><![CDATA[On Determining the Stress Intensity Factor Range Threshold and the Factors that Affect It]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Medina-Bernal]]></surname>
<given-names><![CDATA[Kebin Alberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vanegas-Useche]]></surname>
<given-names><![CDATA[Libardo Vicente]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Tecnológica de Pereira  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Tecnológica de Pereira Facultad de Ingeniería Mecánica ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2022</year>
</pub-date>
<volume>27</volume>
<numero>3</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0121-750X2022000300500&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0121-750X2022000300500&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0121-750X2022000300500&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Contexto:  El umbral del rango del factor de intensidad de tensiones &#916;Kth es un valor por debajo del cual la propagación de grietas de fatiga es insignificante. Este suele usarse para establecer la vida a fatiga de un elemento ingenieril. Sin embargo, su determinación, la forma en que diferentes factores influyen en su valor y su aplicación aún son temas de discusión.  Método:  Este trabajo discute sobre los métodos y criterios existentes para la determinación de &#916;Kth y los factores que lo afectan.  Resultados:  Los métodos experimentales estándar ASTM son los ensayos más usados. Sin embargo estos pueden resultar inexactos, pues los ensayos de pre agrietamiento a compresión pueden producir resultados conservativos. Recientemente se han propuesto muchos métodos analíticos y numéricos para determinar el umbral. Muchos factores y variables afectan el valor de &#916;Kth. tales como el cierre de grieta, la geometría, el tamaño de la grieta. las características de la carga, la microestructura, las propiedades del material, el ambiente, las tensiones residuales y las cargas de modo mixto.  Conclusiones:  El umbral puede determinarse mediante ensayos estándar ASTM o métodos teóricos o numéricos. Se ha avanzado mucho en este campo, pero se requiere más investigación para mejorar los métodos experimentales y obtener métodos analíticos o numéricos que capturen más integralmente las diferentes complejidades, factores y variables que afectan el umbral.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Context:  The stress intensity factor range threshold &#916;Kth is a value below which fatigue crack propagation is insignificant. This factor is usually employed to establish the fatigue life of an engineering element. However, its determination, the way in which the different factors influence its value, and its application are still subjects of discussion.  Method:  This paper discusses the methods and criteria for determining &#916;Kth and the factors that affect it.  Results: Standard ASTM experimental methods are the most used tests. However, they may prove to be inaccurate, since compression pre-cracking tests can yield conservative results. In recent years, many sound analytical and numerical methods for the determination of the threshold have been proposed. Many factors and variables can affect the value of &#916;Kth, such as crack closure, geometry, crack size, load characteristics, microstructure, material properties, environment, residual stresses, and mixed-mode loads.  Conclusions: The threshold can be determined via standard ASTM tests or theoretical or numerical methods. Much progress has been made in this field, but more research is required to improve experimental methods and obtain analytical or numerical methods that more comprehensively capture the different complexities, factors, and variables that affect the threshold.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[cierre de grieta]]></kwd>
<kwd lng="es"><![CDATA[relación de carga]]></kwd>
<kwd lng="es"><![CDATA[microestructura]]></kwd>
<kwd lng="en"><![CDATA[crack closure]]></kwd>
<kwd lng="en"><![CDATA[load ratio]]></kwd>
<kwd lng="en"><![CDATA[microstructure]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<label>[1]</label><nlm-citation citation-type="">
<collab>ASME</collab>
<source><![CDATA[&#8220;Article KD-4, Fracture Mechanics Evaluation&#8221;, Boiler and Pressure Vessel Code, Section VIII, Rules for Construction of Pressure Vessels, Division 3, New York, American Society of Mechanical Engineers]]></source>
<year>2019</year>
</nlm-citation>
</ref>
<ref id="B2">
<label>[2]</label><nlm-citation citation-type="">
<collab>British Standard</collab>
<source><![CDATA[Guide to Methods for Assessing the Acceptability of Flaw in Metallic Structures, BS 7910, London, The British Standard Institution]]></source>
<year>2019</year>
</nlm-citation>
</ref>
<ref id="B3">
<label>[3]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Cabrera Arias]]></surname>
<given-names><![CDATA[C. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Garay Rairan]]></surname>
<given-names><![CDATA[F. S.]]></given-names>
</name>
<name>
<surname><![CDATA[Arango Calderon]]></surname>
<given-names><![CDATA[I.]]></given-names>
</name>
<name>
<surname><![CDATA[Gomez Vargas]]></surname>
<given-names><![CDATA[O. E.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Design of a troubleshooting digital test bench for the beechcraft king C-90, 200, B200, 300 and 350 aircraft GCU]]></article-title>
<source><![CDATA[Ingeniería]]></source>
<year>2020</year>
<volume>25</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>393-409</page-range></nlm-citation>
</ref>
<ref id="B4">
<label>[4]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rodr &#769;&#305;guez Pulecio]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Coronado Mar &#769;&#305;n]]></surname>
<given-names><![CDATA[J. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Arzola de la Pena]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Mecánica de la fractura aplicada a ejes de molinos de caña de azúcar]]></article-title>
<source><![CDATA[Ingeniería]]></source>
<year>2005</year>
<volume>10</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>23-9</page-range></nlm-citation>
</ref>
<ref id="B5">
<label>[5]</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Zerbst]]></surname>
<given-names><![CDATA[U.]]></given-names>
</name>
</person-group>
<source><![CDATA[&#8220;Fatigue and fracture of weldments&#8221;, in Fatigue and Fracture of Weldments]]></source>
<year>2018</year>
<publisher-name><![CDATA[Springer]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B6">
<label>[6]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Miller]]></surname>
<given-names><![CDATA[K. J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The behaviour of short fatigue cracks and their initiation part I - A review of two recent books]]></article-title>
<source><![CDATA[Fat. Frac. Eng. Mater. Struct.]]></source>
<year>1987</year>
<volume>10</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>75-91</page-range></nlm-citation>
</ref>
<ref id="B7">
<label>[7]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Su]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Xu]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Peng]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Han]]></surname>
<given-names><![CDATA[Y.]]></given-names>
</name>
<name>
<surname><![CDATA[Zhao]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[&#8220;Fatigue short crack growth, model and EBSD characterization of marine steel welding joint&#8221;]]></article-title>
<source><![CDATA[Int. J. Fatigue]]></source>
<year>2022</year>
<volume>156</volume>
</nlm-citation>
</ref>
<ref id="B8">
<label>[8]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hasegawa]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
<name>
<surname><![CDATA[Dvorak]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Mares]]></surname>
<given-names><![CDATA[V.]]></given-names>
</name>
<name>
<surname><![CDATA[Strnadel]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Usami]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[&#8220;Suitability of fatigue crack growth thresholds at negative stress ratios for ferritic steels and aluminum alloys in flaw evaluation procedures&#8221;]]></article-title>
<source><![CDATA[Eng. Fract. Mech.]]></source>
<year>2021</year>
<volume>248</volume>
</nlm-citation>
</ref>
<ref id="B9">
<label>[9]</label><nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Taylor]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
</person-group>
<source><![CDATA[A Compendium of Fatigue Thresholds and Growth Rates, London, Engineering Materials Advisory Services]]></source>
<year>1985</year>
</nlm-citation>
</ref>
<ref id="B10">
<label>[10]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Zerbst]]></surname>
<given-names><![CDATA[U.]]></given-names>
</name>
<name>
<surname><![CDATA[Vormwald]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Pippan]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Ganser]]></surname>
<given-names><![CDATA[H.-P.]]></given-names>
</name>
<name>
<surname><![CDATA[Sarrazin-Baudoux]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Madia]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[&#8220;About the fatigue crack &#776;propagation threshold of metals as a design criterion - A review&#8221;]]></article-title>
<source><![CDATA[Eng. Fract. Mech]]></source>
<year>2016</year>
<volume>153</volume>
<page-range>190-243</page-range></nlm-citation>
</ref>
<ref id="B11">
<label>[11]</label><nlm-citation citation-type="">
<collab>ASTM</collab>
<source><![CDATA[Standard Test Method for Measurement of Fatigue Crack Growth Rates, ASTM E647-15e1, West Conshohocken, PA, ASTM International]]></source>
<year>2015</year>
</nlm-citation>
</ref>
<ref id="B12">
<label>[12]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Pook]]></surname>
<given-names><![CDATA[L. P.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[&#8220;Mixed-mode fatigue crack growth thresholds: a personal historical review of work at the National Engineering Laboratory, 1975-1989&#8221;]]></article-title>
<source><![CDATA[Eng. Fract. Mech.]]></source>
<year>2018</year>
<volume>187</volume>
<page-range>115-41</page-range></nlm-citation>
</ref>
<ref id="B13">
<label>[13]</label><nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Barsom]]></surname>
<given-names><![CDATA[J. M.]]></given-names>
</name>
</person-group>
<source><![CDATA[&#8220;Fatigue behavior of pressure-vessel steels&#8221;, WRC Bulletin, 194, New York, The Welding Research Council]]></source>
<year>1974</year>
</nlm-citation>
</ref>
<ref id="B14">
<label>[14]</label><nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hobbacher]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<source><![CDATA[Recommendations for Fatigue Design of Welded Joints and Components, document XIII-2151-07 / XV 1254-07, Paris, International Institute of Welding]]></source>
<year>2007</year>
</nlm-citation>
</ref>
<ref id="B15">
<label>[15]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Marci]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Determination of the partitioning point dividing &#8710;K into &#8710;Kthef f]]></article-title>
<source><![CDATA[Eng. Fract. Mech.]]></source>
<year>1996</year>
<volume>53</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>23-36</page-range></nlm-citation>
</ref>
<ref id="B16">
<label>[16]</label><nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Forth]]></surname>
<given-names><![CDATA[S. C.]]></given-names>
</name>
<name>
<surname><![CDATA[Newman]]></surname>
<given-names><![CDATA[J. C.]]></given-names>
</name>
<name>
<surname><![CDATA[Forman]]></surname>
<given-names><![CDATA[R. G.]]></given-names>
</name>
</person-group>
<source><![CDATA[&#8220;Generating fatigue crack growth thresholds with constant amplitude loads&#8221;, Fatigue 2002]]></source>
<year>2002</year>
<page-range>2337-44</page-range></nlm-citation>
</ref>
<ref id="B17">
<label>[17]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bang]]></surname>
<given-names><![CDATA[D. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Ince]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[&#8220;A short and long crack growth model based on 2-parameter driving force and crack growth thresholds&#8221;]]></article-title>
<source><![CDATA[Int. J. of Fatigue]]></source>
<year>2020</year>
<volume>141</volume>
</nlm-citation>
</ref>
<ref id="B18">
<label>[18]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Newman]]></surname>
<given-names><![CDATA[J. C.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[&#8220;A review of modeling small-crack behavior and fatigue-life predictions for aluminum alloys&#8221;]]></article-title>
<source><![CDATA[Fat. Fract. Eng. Mater. Struct]]></source>
<year>1994</year>
<volume>17</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>429-39</page-range></nlm-citation>
</ref>
<ref id="B19">
<label>[19]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Leonetti]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Maljaars]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Snijder]]></surname>
<given-names><![CDATA[H. H.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[&#8220;Fracture mechanics based fatigue life prediction for a weld toe crackunder constant and variable amplitude random block loading-Modeling and uncertainty estimation&#8221;]]></article-title>
<source><![CDATA[Eng. Fract. Mech.]]></source>
<year>2021</year>
<volume>242</volume>
</nlm-citation>
</ref>
<ref id="B20">
<label>[20]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Sadananda]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
<name>
<surname><![CDATA[Arcari]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Vasudevan]]></surname>
<given-names><![CDATA[A. K.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[&#8220;Does a nucleated crack propagate?&#8221;]]></article-title>
<source><![CDATA[Eng. Fract. Mech.]]></source>
<year>2017</year>
<volume>176</volume>
<page-range>144-60</page-range></nlm-citation>
</ref>
<ref id="B21">
<label>[21]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Vasudevan]]></surname>
<given-names><![CDATA[A. K.]]></given-names>
</name>
<name>
<surname><![CDATA[Sadanada]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
<name>
<surname><![CDATA[Louat]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[&#8220;A review of crack closure, fatigue crack threshold and related phenomena&#8221;]]></article-title>
<source><![CDATA[Mater. Sci. Eng. A]]></source>
<year>1994</year>
<volume>188</volume>
<numero>1-2</numero>
<issue>1-2</issue>
<page-range>1-22</page-range></nlm-citation>
</ref>
<ref id="B22">
<label>[22]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Noroozi]]></surname>
<given-names><![CDATA[A. H.]]></given-names>
</name>
<name>
<surname><![CDATA[Glinka]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Lambert]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[&#8220;A two parameter driving force for fatigue crack growth analysis&#8221;]]></article-title>
<source><![CDATA[Int. J. Fatigue]]></source>
<year>2005</year>
<volume>27</volume>
<numero>10-12</numero>
<issue>10-12</issue>
<page-range>1277-96</page-range></nlm-citation>
</ref>
<ref id="B23">
<label>[23]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Noroozi]]></surname>
<given-names><![CDATA[A. H.]]></given-names>
</name>
<name>
<surname><![CDATA[Glinka]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Lambert]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[&#8220;A study of the stress ratio effects on fatigue crack growth using the unified two-parameter fatigue crack growth driving force&#8221;]]></article-title>
<source><![CDATA[Int. J. Fatigue]]></source>
<year>2007</year>
<volume>29</volume>
<numero>9-11</numero>
<issue>9-11</issue>
<page-range>1616-33</page-range></nlm-citation>
</ref>
<ref id="B24">
<label>[24]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bang]]></surname>
<given-names><![CDATA[D. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Ince]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Tang]]></surname>
<given-names><![CDATA[L. Q.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[&#8220;A modification of UniGrow 2-parameter driving force model for short fatigue crack growth&#8221;]]></article-title>
<source><![CDATA[Fat. Fract. Eng. Mater. Struct]]></source>
<year>2019</year>
<volume>42</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>45-60</page-range></nlm-citation>
</ref>
<ref id="B25">
<label>[25]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bang]]></surname>
<given-names><![CDATA[D. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Ince]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Noban]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[&#8220;Modeling approach for a unified crack growth model in short and long fatigue crack regimes&#8221;]]></article-title>
<source><![CDATA[Int. J. Fatigue]]></source>
<year>2019</year>
<volume>128</volume>
</nlm-citation>
</ref>
<ref id="B26">
<label>[26]</label><nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Kitagawa]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<name>
<surname><![CDATA[Takahashi]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
</person-group>
<source><![CDATA[&#8220;Applicability of fracture mechanics to very small cracks or the cracks in the early stages&#8221;, Proceedings of 2nd International Conference on Mechanical Behavior of Materials]]></source>
<year>1976</year>
<page-range>627-31</page-range></nlm-citation>
</ref>
<ref id="B27">
<label>[27]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Atzori]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Lazzarin]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[&#8220;Notch sensitivity and defect sensitivity under fatigue loading: Two sides of the same medal&#8221;]]></article-title>
<source><![CDATA[Int. J. Fract]]></source>
<year>2001</year>
<volume>107</volume>
<page-range>1-8</page-range></nlm-citation>
</ref>
<ref id="B28">
<label>[28]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Atzori]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Lazzarin]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[&#8220;A three-dimensional graphical aid to analyze fatigue crack nucleation and propagation phases under fatigue limit conditions&#8221;]]></article-title>
<source><![CDATA[Int. J. Fract]]></source>
<year>2002</year>
<volume>118</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>271-84</page-range></nlm-citation>
</ref>
<ref id="B29">
<label>[29]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[James]]></surname>
<given-names><![CDATA[M. N.]]></given-names>
</name>
<name>
<surname><![CDATA[Christopher]]></surname>
<given-names><![CDATA[C. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Lu]]></surname>
<given-names><![CDATA[Y.]]></given-names>
</name>
<name>
<surname><![CDATA[Patterson]]></surname>
<given-names><![CDATA[E. A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Local crack plasticity and its influences on the global elastic stress field]]></article-title>
<source><![CDATA[Int. J. Fatigue]]></source>
<year>2013</year>
<volume>46</volume>
<page-range>4-15</page-range></nlm-citation>
</ref>
<ref id="B30">
<label>[30]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ritchie]]></surname>
<given-names><![CDATA[R. O.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[&#8220;Mechanisms of fatigue crack propagation in metals, ceramics and composites: Role of crack tip shielding&#8221;]]></article-title>
<source><![CDATA[Mater. Sci. Eng.: A]]></source>
<year>1988</year>
<volume>103</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>15-28</page-range></nlm-citation>
</ref>
<ref id="B31">
<label>[31]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Pippan]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Hohenwarter]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[&#8220;Fatigue crack closure: A review of the physical phenomena&#8221;]]></article-title>
<source><![CDATA[Fat. Fract. Eng. Mater. Struct]]></source>
<year>2017</year>
<volume>40</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>471-95</page-range></nlm-citation>
</ref>
<ref id="B32">
<label>[32]</label><nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Schindler]]></surname>
<given-names><![CDATA[H. J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[&#8220;On the significance of crack tip shielding in fatigue threshold- Theoretical relations and experimental implications&#8221;]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Newman]]></surname>
<given-names><![CDATA[J. C.]]></given-names>
</name>
<name>
<surname><![CDATA[Piascik]]></surname>
<given-names><![CDATA[R. S.]]></given-names>
</name>
</person-group>
<source><![CDATA[Fatigue Crack Growth Thresholds, Endurance Limits, and DesignASTM International]]></source>
<year>2000</year>
</nlm-citation>
</ref>
<ref id="B33">
<label>[33]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Pippan]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[&#8220;The effective threshold of fatigue crack propagation in aluminium alloys. I. The influence of yield stress and chemical composition&#8221;]]></article-title>
<source><![CDATA[Phil. Magazine A]]></source>
<year>1998</year>
<volume>77</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>861-73</page-range></nlm-citation>
</ref>
<ref id="B34">
<label>[34]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Miller]]></surname>
<given-names><![CDATA[K. J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[&#8220;Materials science perspective of metal fatigue resistance&#8221;]]></article-title>
<source><![CDATA[Mater. Sci. Tech.]]></source>
<year>1993</year>
<volume>9</volume>
<numero>6</numero>
<issue>6</issue>
<page-range>453-62</page-range></nlm-citation>
</ref>
<ref id="B35">
<label>[35]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Santus]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Taylor]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[&#8220;Physically short crack propagation in metals during high cycle fatigue&#8221;]]></article-title>
<source><![CDATA[Int. J. Fatigue]]></source>
<year>2009</year>
<volume>31</volume>
<numero>8-9</numero>
<issue>8-9</issue>
<page-range>1356-65</page-range></nlm-citation>
</ref>
<ref id="B36">
<label>[36]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Zerbst]]></surname>
<given-names><![CDATA[U.]]></given-names>
</name>
<name>
<surname><![CDATA[Madia]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[&#8220;Fracture mechanics based assessment of the fatigue strength: Approach for the determination of the initial crack size&#8221;]]></article-title>
<source><![CDATA[Fat. Fract. Eng. Mater. Struct]]></source>
<year>2015</year>
<volume>38</volume>
<numero>9</numero>
<issue>9</issue>
<page-range>1066-75</page-range></nlm-citation>
</ref>
<ref id="B37">
<label>[37]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Cai]]></surname>
<given-names><![CDATA[X.]]></given-names>
</name>
<name>
<surname><![CDATA[Xia]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Huo]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Xu]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[&#8220;A threshold formula for fatigue crack growth with mean stress intensity factors&#8221;]]></article-title>
<source><![CDATA[Int. J. Mech. Sci.]]></source>
<year>2018</year>
<volume>135</volume>
<page-range>639-45</page-range></nlm-citation>
</ref>
<ref id="B38">
<label>[38]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Kujawski]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Ellyin]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[&#8220;A unified approach to mean stress effect on fatigue threshold conditions&#8221;]]></article-title>
<source><![CDATA[Int. J. Fatigue]]></source>
<year>1995</year>
<volume>17</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>101-6</page-range></nlm-citation>
</ref>
<ref id="B39">
<label>[39]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Lal]]></surname>
<given-names><![CDATA[D. N.]]></given-names>
</name>
<name>
<surname><![CDATA[G.]]></surname>
<given-names><![CDATA[T. K.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[&#8220;A model for the effect of mean stress on the threshold condition for fatigue crack propagation&#8221;]]></article-title>
<source><![CDATA[Mater. Sci. Eng.: A]]></source>
<year>1990</year>
<volume>130</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>37-49</page-range></nlm-citation>
</ref>
<ref id="B40">
<label>[40]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Kloster]]></surname>
<given-names><![CDATA[V.]]></given-names>
</name>
<name>
<surname><![CDATA[Richard]]></surname>
<given-names><![CDATA[H. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Kullmer]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[&#8220;Experimental characterization of the threshold and fatigue crack growth behaviour regarding negative stress ratios&#8221;]]></article-title>
<source><![CDATA[Ann. Nuclear Energy]]></source>
<year>2013</year>
<volume>40</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>14-24</page-range></nlm-citation>
</ref>
<ref id="B41">
<label>[41]</label><nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rosenfeld]]></surname>
<given-names><![CDATA[M. S.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[&#8220;The effect of stress ratio during crack propagation and fatigue for 2024-T3 and 7075-T6 aluminum&#8221;]]></article-title>
<source><![CDATA[Effect of Environment and Complex Load History on Fatigue Life, ASTM International]]></source>
<year>1970</year>
</nlm-citation>
</ref>
<ref id="B42">
<label>[42]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mann]]></surname>
<given-names><![CDATA[T.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[&#8220;The influence of mean stress on fatigue crack propagation in aluminum alloys&#8221;]]></article-title>
<source><![CDATA[Int. J. Fatigue]]></source>
<year>2007</year>
<volume>29</volume>
<numero>8</numero>
<issue>8</issue>
<page-range>1393-401</page-range></nlm-citation>
</ref>
<ref id="B43">
<label>[43]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Radhakrishan]]></surname>
<given-names><![CDATA[V. M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[&#8220;Endurance diagram&#8221;]]></article-title>
<source><![CDATA[Int. J. Fatigue]]></source>
<year>1990</year>
<volume>12</volume>
<numero>6</numero>
<issue>6</issue>
<page-range>513-7</page-range></nlm-citation>
</ref>
<ref id="B44">
<label>[44]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Doker]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[&#8220;Fatigue crack growth threshold: Implications, determination and data evaluation&#8221;]]></article-title>
<source><![CDATA[&#776; Int. J. Fatigue]]></source>
<year>1997</year>
<volume>19</volume>
<numero>93</numero>
<issue>93</issue>
<page-range>145-9</page-range></nlm-citation>
</ref>
<ref id="B45">
<label>[45]</label><nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Schmidt]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Paris]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[&#8220;Threshold for fatigue crack propagation and the effects of load ratio and frequency&#8221;]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Kaufman]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Swedlow]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Corten]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<name>
<surname><![CDATA[Srawley]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Heyer]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Wessel]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Irwin]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
</person-group>
<source><![CDATA[Progress in Flaw Growth and Fracture Toughness Testing, ASTM International]]></source>
<year>1973</year>
</nlm-citation>
</ref>
<ref id="B46">
<label>[46]</label><nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Chen]]></surname>
<given-names><![CDATA[Z.]]></given-names>
</name>
</person-group>
<source><![CDATA[The Effect of R Ratio and Temperature on Fatigue Crack Growth Threshold of Power Plant Steels, Doctoral Thesis, ETH, Zurich]]></source>
<year>2018</year>
</nlm-citation>
</ref>
<ref id="B47">
<label>[47]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Yamada]]></surname>
<given-names><![CDATA[Y.]]></given-names>
</name>
<name>
<surname><![CDATA[Newman Jr]]></surname>
<given-names><![CDATA[J. C.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[&#8220;Crack closure under high load-ratio conditions for Inconel-718 near thresh-old behavior&#8221;]]></article-title>
<source><![CDATA[Eng. Fract. Mech]]></source>
<year>2009</year>
<volume>76</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>209-20</page-range></nlm-citation>
</ref>
<ref id="B48">
<label>[48]</label><nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Newman]]></surname>
<given-names><![CDATA[J. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Riddell]]></surname>
<given-names><![CDATA[W. T.]]></given-names>
</name>
<name>
<surname><![CDATA[Piascik]]></surname>
<given-names><![CDATA[R S.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[&#8220;Effects of Kmax on fatigue crack growth threshold in aluminum alloys&#8221;]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Newman]]></surname>
<given-names><![CDATA[J. C.]]></given-names>
</name>
<name>
<surname><![CDATA[Piascik]]></surname>
<given-names><![CDATA[R. S.]]></given-names>
</name>
</person-group>
<source><![CDATA[Fatigue Crack Growth Thresholds, Endurance Limits, and Design, ASTM International]]></source>
<year>2000</year>
</nlm-citation>
</ref>
<ref id="B49">
<label>[49]</label><nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Newman]]></surname>
<given-names><![CDATA[J. A.]]></given-names>
</name>
</person-group>
<source><![CDATA[The Effects of Load Ratio on Threshold Fatigue Crack Growth of Aluminum Alloys, Ph.D. Dissertation, Virginia Tech]]></source>
<year>2000</year>
</nlm-citation>
</ref>
<ref id="B50">
<label>[50]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Boyce]]></surname>
<given-names><![CDATA[B. L.]]></given-names>
</name>
<name>
<surname><![CDATA[Ritchie]]></surname>
<given-names><![CDATA[R. O.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[&#8220;Effect of load ratio and maximum stress intensity on the fatigue threshold in Ti-6Al-4V&#8221;]]></article-title>
<source><![CDATA[Eng. Fract. Mech.]]></source>
<year>2001</year>
<volume>68</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>129-47</page-range></nlm-citation>
</ref>
<ref id="B51">
<label>[51]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Zhu]]></surname>
<given-names><![CDATA[M.-L.]]></given-names>
</name>
<name>
<surname><![CDATA[Xuan]]></surname>
<given-names><![CDATA[F.-Z.]]></given-names>
</name>
<name>
<surname><![CDATA[Tu]]></surname>
<given-names><![CDATA[S.-T.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[&#8220;Effect of load ratio on fatigue crack growth in the nearthreshold regime: A literature review, and a combined crack closure and driving force approach&#8221;]]></article-title>
<source><![CDATA[Eng. Fract. Mech]]></source>
<year>2015</year>
<volume>141</volume>
<page-range>57-77</page-range></nlm-citation>
</ref>
<ref id="B52">
<label>[52]</label><nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Sunder]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
</person-group>
<source><![CDATA[&#8220;Why and how residual stress affects metal fatigue&#8221;, Advanced Materials Springer Proceedings in Physics]]></source>
<year>2016</year>
<volume>175</volume>
</nlm-citation>
</ref>
<ref id="B53">
<label>[53]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Sheldon]]></surname>
<given-names><![CDATA[j. W.]]></given-names>
</name>
<name>
<surname><![CDATA[Bain]]></surname>
<given-names><![CDATA[K. R.]]></given-names>
</name>
<name>
<surname><![CDATA[Donald]]></surname>
<given-names><![CDATA[J. K.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[&#8220;Investigation of the effects of shed-rate, initial Kmax, and geometric constraint on &#8710;Kth in Ti-6Al-4V at room temperature&#8221;]]></article-title>
<source><![CDATA[Int. J. Fatigue]]></source>
<year>1999</year>
<volume>21</volume>
<numero>7</numero>
<issue>7</issue>
<page-range>733-41</page-range></nlm-citation>
</ref>
<ref id="B54">
<label>[54]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Verpoest]]></surname>
<given-names><![CDATA[I.]]></given-names>
</name>
<name>
<surname><![CDATA[Aernoudt]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Deruyttere]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[De Bondt]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[&#8220;The fatigue threshold, surface condition and fatigue limit of steel wire&#8221;]]></article-title>
<source><![CDATA[Int. J. Fatigue]]></source>
<year>1985</year>
<volume>7</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>199-214</page-range></nlm-citation>
</ref>
<ref id="B55">
<label>[55]</label><nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[McClung]]></surname>
<given-names><![CDATA[R. C.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[&#8220;Analysis of fatigue crack closure during simulated threshold testing&#8221;]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Newman]]></surname>
<given-names><![CDATA[J. C.]]></given-names>
</name>
<name>
<surname><![CDATA[Piascik]]></surname>
<given-names><![CDATA[R.S.]]></given-names>
</name>
</person-group>
<source><![CDATA[Fatigue Crack Growth Thresholds, Endurance Limits, and Design, ASTM International]]></source>
<year>2000</year>
</nlm-citation>
</ref>
<ref id="B56">
<label>[56]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Topper]]></surname>
<given-names><![CDATA[T. H.]]></given-names>
</name>
<name>
<surname><![CDATA[Yu]]></surname>
<given-names><![CDATA[M. T.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[&#8220;The effect of overloads on threshold and crack closure&#8221;]]></article-title>
<source><![CDATA[Int. J. of Fatigue]]></source>
<year>1985</year>
<volume>7</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>159-64</page-range></nlm-citation>
</ref>
<ref id="B57">
<label>[57]</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Richard]]></surname>
<given-names><![CDATA[H. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Sander]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<source><![CDATA[Fatigue Crack Growth, Berlin]]></source>
<year>2016</year>
<publisher-name><![CDATA[Springer]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B58">
<label>[58]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hertzberg]]></surname>
<given-names><![CDATA[R. W.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[&#8220;On the calculation of closure-free fatigue crack propagation data in monolithic metal alloys&#8221;]]></article-title>
<source><![CDATA[Mat. Sc. Eng.: A]]></source>
<year>1995</year>
<volume>190</volume>
<numero>1-2</numero>
<issue>1-2</issue>
<page-range>25-32</page-range></nlm-citation>
</ref>
<ref id="B59">
<label>[59]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Petit]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Henaff]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Sarrazin-Baudoux]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[&#8220;Environmentally assisted fatigue in the gaseous atmosphere&#8221;]]></article-title>
<source><![CDATA[Compr. Struct. Integr]]></source>
<year>2003</year>
<volume>6</volume>
<page-range>211-80</page-range></nlm-citation>
</ref>
<ref id="B60">
<label>[60]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Romaniv]]></surname>
<given-names><![CDATA[O. N.]]></given-names>
</name>
<name>
<surname><![CDATA[Tkach]]></surname>
<given-names><![CDATA[A. N.]]></given-names>
</name>
<name>
<surname><![CDATA[Lenets]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[&#8220;Effect of fatigue crack closure on near-threshold crack resistance of structural steels&#8221;]]></article-title>
<source><![CDATA[Fat. Fract. Eng. Mat. Struct]]></source>
<year>1987</year>
<volume>10</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>203-12</page-range></nlm-citation>
</ref>
<ref id="B61">
<label>[61]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Lados]]></surname>
<given-names><![CDATA[D. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Apelian]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Donald]]></surname>
<given-names><![CDATA[J. K.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[&#8220;Fatigue crack growth mechanisms at the microstructure scale in Al-Si-Mg cast alloys: Mechanisms in the near-threshold regime&#8221;]]></article-title>
<source><![CDATA[Acta Materialia]]></source>
<year>2006</year>
<volume>54</volume>
<numero>6</numero>
<issue>6</issue>
<page-range>1475-86</page-range></nlm-citation>
</ref>
<ref id="B62">
<label>[62]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hutar]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Seitl]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Kruml]]></surname>
<given-names><![CDATA[T.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[&#8220;Effect of specimen geometry on fatigue crack propagation in threshold region&#8221;]]></article-title>
<source><![CDATA[Int. Conf. on Fracture (ICF 12)]]></source>
<year>2009</year>
<volume>4</volume>
<page-range>2914-22</page-range></nlm-citation>
</ref>
<ref id="B63">
<label>[63]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Paris]]></surname>
<given-names><![CDATA[P. C.]]></given-names>
</name>
<name>
<surname><![CDATA[Tada]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<name>
<surname><![CDATA[Donald]]></surname>
<given-names><![CDATA[J K.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[&#8220;Service load fatigue damage -A historical perspective&#8221;]]></article-title>
<source><![CDATA[Int. J. Fatigue]]></source>
<year>1999</year>
<volume>21</volume>
<numero>Supplement I</numero>
<issue>Supplement I</issue>
<page-range>S35-46</page-range></nlm-citation>
</ref>
<ref id="B64">
<label>[64]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Kujawski]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[&#8220;Enhanced model of partial crack closure for correlation of R-ratio effects in aluminum alloys&#8221;]]></article-title>
<source><![CDATA[Int.J. Fatigue]]></source>
<year>2001</year>
<volume>23</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>95-102</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
