Article(id=1228282195798848077, tenantId=1146029695717560320, journalId=1227999626482147330, issueId=1228282191159952029, articleNumber=null, orderNo=null, doi=10.16579/j.issn.1001.9669.2025.10.015, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1745683200000, receivedDateStr=2025-04-27, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1770774895858, onlineDateStr=2026-02-11, pubDate=1760457600000, pubDateStr=2025-10-15, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1770774895858, onlineIssueDateStr=2026-02-11, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1770774895858, creator=13701087609, updateTime=1770774895858, updator=13701087609, issue=Issue{id=1228282191159952029, tenantId=1146029695717560320, journalId=1227999626482147330, year='2025', volume='47', issue='10', pageStart='1', pageEnd='157', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1770774894751, creator=13701087609, updateTime=1770775890381, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1228286367227118244, tenantId=1146029695717560320, journalId=1227999626482147330, issueId=1228282191159952029, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1228286367227118245, tenantId=1146029695717560320, journalId=1227999626482147330, issueId=1228282191159952029, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=131, endPage=138, ext={EN=ArticleExt(id=1228282196499296875, articleId=1228282195798848077, tenantId=1146029695717560320, journalId=1227999626482147330, language=EN, title=Research on the prediction method of Ⅰ+Ⅱ mixed-mode crack growth rate in 6005A-T6 aluminum alloy based on limited samples, columnId=1228282192162390694, journalTitle=Journal of Mechanical Strength, columnName=Experimental Research·Testing Technology, runingTitle=null, highlight=null, articleAbstract=
To evaluate the performance of various equivalent stress intensity factor models in predicting mixed-mode fatigue crack growth and to address the challenge of parameter estimation under limited sample conditions. A crack growth parameter estimation method based on the Bootstrap method resampling technique was proposed firstly. Mode Ⅰ fatigue crack growth tests were conducted on CT specimens to obtain the material parameters, and the proposed method was employed to expand the sample set and mitigate the issue of data scarcity. Then, using the statistically augmented material parameters,mixed-mode Ⅰ+Ⅱ fatigue crack growth experiments were performed on 6005A-T6 aluminum alloy CTS specimens under loading angles of 0°, 30°, 45° and 60°, employing a Richard-type loading fixture, to validate the accuracy of various equivalent stress intensity factor models. The results indicate that the Irwin model achieved the highest goodness-of-fit, with a value of 0.942 1, demonstrating the best crack growth prediction performance. Increasing the loading angle was found to reduce the initial crack growth rate, highlighting the need for angle-specific experiments to obtain appropriate Paris law parameters. This study confirms the applicability of multiple ΔKeq models and provides theoretical support for fatigue life prediction in mixed-mode crack growth scenarios.
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为评估不同等效应力强度因子模型在复合型疲劳裂纹扩展预测中的表现,以及解决有限样本条件下疲劳裂纹扩展模型参数计算的问题。首先,提出了一种基于Bootstrap法的裂纹扩展参数计算方法,并对标准紧凑拉伸试样进行Ⅰ型疲劳裂纹扩展试验以得到材料参数,并利用所提方法进行样本扩增以解决样本较少的问题。其次,结合样本扩增统计得到的材料参数,采用6005A-T6铝合金紧凑拉伸剪切试样和Richard加载装置,在0°、30°、45°和60°加载角度下进行Ⅰ+Ⅱ混合模式疲劳裂纹扩展试验,以验证不同等效应力强度因子计算模型的准确性。结果表明,Irwin模型具有最高的拟合优度,大小为0.942 1,表现出最佳的裂纹扩展预测效果;加载角度的增加会导致初始裂纹扩展速率减慢,需要不同角度的试验来获取适配的Paris公式参数。研究验证了多种ΔKeq模型的实用性,为复合型裂纹扩展行为的疲劳寿命预测提供了理论支持。
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何寒,男,1983年生,湖北荆门人,硕士,讲师;主要研究方向为材料疲劳性能;E-mail:hh-1129@163.com。
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何寒,男,1983年生,湖北荆门人,硕士,讲师;主要研究方向为材料疲劳性能;E-mail:hh-1129@163.com。
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80:103898., articleTitle=Mixed mode fatigue crack growth studies in AISI 316 stainless steel, refAbstract=null)], funds=[Fund(id=1228282215482716447, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282195798848077, awardId=252102220051, language=EN, fundingSource=Henan Provincial Department of Science and Technology Research Project(252102220051), fundOrder=null, country=null), Fund(id=1228282215570796833, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282195798848077, awardId=252102220051, language=CN, fundingSource=河南省科技攻关项目(252102220051), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1228282207316406275, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282195798848077, xref=1., ext=[AuthorCompanyExt(id=1228282207320600581, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282195798848077, companyId=1228282207316406275, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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Basic construction principle of crack localized displacement field, figureFileSmall=amBEkqo69pJV6Li4PwClLw==, figureFileBig=5OxaAuMgdz6NEsskd4Ylfw==, tableContent=null), ArticleFig(id=1228282211095474349, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282195798848077, language=CN, label=图1, caption=
裂纹局部位移场基本构建原理, figureFileSmall=amBEkqo69pJV6Li4PwClLw==, figureFileBig=5OxaAuMgdz6NEsskd4Ylfw==, tableContent=null), ArticleFig(id=1228282211259052217, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282195798848077, language=EN, label=Fig.2, caption=
Prediction technology roadmap for composite crack propagation behavior based on Bootstrap methodology, figureFileSmall=2iNzZ2vWW4PBK9uH74vp9g==, figureFileBig=3bK1CLB0KC1ReWpu+dL1CQ==, tableContent=null), ArticleFig(id=1228282211342938301, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282195798848077, language=CN, label=图2, caption=
基于Bootstrap法的复合型裂纹扩展行为预测技术路线, figureFileSmall=2iNzZ2vWW4PBK9uH74vp9g==, figureFileBig=3bK1CLB0KC1ReWpu+dL1CQ==, tableContent=null), ArticleFig(id=1228282211426824389, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282195798848077, language=EN, label=Fig.3, caption=
Dimensions of the CT specimen, figureFileSmall=MR3xq/cumCo2DO37UbCmRA==, figureFileBig=ysxmWfW4gAZtB/nmPGNZIw==, tableContent=null), ArticleFig(id=1228282211502321867, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282195798848077, language=CN, label=图3, caption=
CT试样尺寸, figureFileSmall=MR3xq/cumCo2DO37UbCmRA==, figureFileBig=ysxmWfW4gAZtB/nmPGNZIw==, tableContent=null), ArticleFig(id=1228282211607179472, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282195798848077, language=EN, label=Fig.4, caption=
CT specimen and crack propagation results, figureFileSmall=QwUf1bibDYh615pvAZ4B1g==, figureFileBig=GTZ3itOcjX43gRphhPms7Q==, tableContent=null), ArticleFig(id=1228282211695259858, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282195798848077, language=CN, label=图4, caption=
CT试样及裂纹扩展结果, figureFileSmall=QwUf1bibDYh615pvAZ4B1g==, figureFileBig=GTZ3itOcjX43gRphhPms7Q==, tableContent=null), ArticleFig(id=1228282211795923159, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282195798848077, language=EN, label=Fig.5, caption=
Paris curves for type Ⅰ fatigue crack extension of aluminum alloy, figureFileSmall=dDPnWEN97yqT1uPondnczg==, figureFileBig=zagQSwnIV4SMe/DlXZOyRg==, tableContent=null), ArticleFig(id=1228282213188432091, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282195798848077, language=CN, label=图5, caption=
铝合金Ⅰ型疲劳裂纹扩展Paris曲线, figureFileSmall=dDPnWEN97yqT1uPondnczg==, figureFileBig=zagQSwnIV4SMe/DlXZOyRg==, tableContent=null), ArticleFig(id=1228282213356204258, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282195798848077, language=EN, label=Fig.6, caption=
Dimensions of CTS specimen, figureFileSmall=NQI0wLtXWblt4o2ESR/TKw==, figureFileBig=J9mhstYodZpy/imkT4Y6mA==, tableContent=null), ArticleFig(id=1228282213452673252, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282195798848077, language=CN, label=图6, caption=
CTS试样尺寸, figureFileSmall=NQI0wLtXWblt4o2ESR/TKw==, figureFileBig=J9mhstYodZpy/imkT4Y6mA==, tableContent=null), ArticleFig(id=1228282213549142248, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282195798848077, language=EN, label=Fig.7, caption=
CTS specimens, fixtures and loading angles, figureFileSmall=p9Zkrjy4jlLN6X5FcOSSlA==, figureFileBig=sM0DqyHI+5AUMuXZiVW4ww==, tableContent=null), ArticleFig(id=1228282213653999850, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282195798848077, language=CN, label=图7, caption=
CTS试样、夹具与加载角度, figureFileSmall=p9Zkrjy4jlLN6X5FcOSSlA==, figureFileBig=sM0DqyHI+5AUMuXZiVW4ww==, tableContent=null), ArticleFig(id=1228282213767246063, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282195798848077, language=EN, label=Fig.8, caption=
Crack propagation path of CTS specimens, figureFileSmall=4gmLnrY+SmX2UiUGoDo5Xg==, figureFileBig=02PJHE0ZxGLHRhgbHX1euw==, tableContent=null), ArticleFig(id=1228282213880492276, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282195798848077, language=CN, label=图8, caption=
CTS试样裂纹扩展路径, figureFileSmall=4gmLnrY+SmX2UiUGoDo5Xg==, figureFileBig=02PJHE0ZxGLHRhgbHX1euw==, tableContent=null), ArticleFig(id=1228282213964378359, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282195798848077, language=EN, label=Fig.9, caption=
Load distribution parameters during loading of CTS specimens, figureFileSmall=e7UplKjCTVmIx7vbZWwXdw==, figureFileBig=+ryS+wrSr7trMOhpKV60vg==, tableContent=null), ArticleFig(id=1228282214044070137, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282195798848077, language=CN, label=图9, caption=
CTS试样加载时载荷分配参数, figureFileSmall=e7UplKjCTVmIx7vbZWwXdw==, figureFileBig=+ryS+wrSr7trMOhpKV60vg==, tableContent=null), ArticleFig(id=1228282214169899259, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282195798848077, language=EN, label=Fig.10, caption=
Trends in stress intensity factor range ΔKⅠ and ΔKⅡ, figureFileSmall=tFTvMEHCsN89Z/CemVbZeg==, figureFileBig=/cqGlWmzT4vJNDX2vPBJrw==, tableContent=null), ArticleFig(id=1228282214291534080, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282195798848077, language=CN, label=图10, caption=
应力强度因子范围ΔKⅠ和ΔKⅡ变化趋势, figureFileSmall=tFTvMEHCsN89Z/CemVbZeg==, figureFileBig=/cqGlWmzT4vJNDX2vPBJrw==, tableContent=null), ArticleFig(id=1228282214375420158, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282195798848077, language=EN, label=Fig.11, caption=
Distribution of material constants after Bootstrap method sample expansion, figureFileSmall=/VtX0tTTLHYAlfwJIP9FZg==, figureFileBig=5PJMu7bvxx/uIHm17+CzSg==, tableContent=null), ArticleFig(id=1228282214618689794, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282195798848077, language=CN, label=图11, caption=
Bootstrap法样本扩容后的材料常数分布, figureFileSmall=/VtX0tTTLHYAlfwJIP9FZg==, figureFileBig=5PJMu7bvxx/uIHm17+CzSg==, tableContent=null), ArticleFig(id=1228282214727741700, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282195798848077, language=EN, label=Fig.12, caption=
Crack extension curves based on four composite equivalent stress strength factors, figureFileSmall=2ddFy/vnpzuE3aAxJ+6bag==, figureFileBig=mQ7wu6G9AXwcLQGSUBEwzw==, tableContent=null), ArticleFig(id=1228282214807433480, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282195798848077, language=CN, label=图12, caption=
基于4种复合型等效应力强度因子的裂纹扩展曲线, figureFileSmall=2ddFy/vnpzuE3aAxJ+6bag==, figureFileBig=mQ7wu6G9AXwcLQGSUBEwzw==, tableContent=null), ArticleFig(id=1228282214882930954, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282195798848077, language=EN, label=Tab.1, caption=
Chemical composition of 6005A-T6 aluminum alloy%
, figureFileSmall=null, figureFileBig=null, tableContent=
材料 Material | Si | Fe | Cu | Mn | Mg | Cr | Zn | Ti | Al |
|---|
| 6005A-T6 | 0.75 | 0.35 | 0.30 | 0.50 | 0.60 | 0.30 | 0.15 | 0.10 | 余量 Balance |
), ArticleFig(id=1228282214979399951, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282195798848077, language=CN, label=表1, caption=
6005A-T6铝合金化学成分
, figureFileSmall=null, figureFileBig=null, tableContent=
材料 Material | Si | Fe | Cu | Mn | Mg | Cr | Zn | Ti | Al |
|---|
| 6005A-T6 | 0.75 | 0.35 | 0.30 | 0.50 | 0.60 | 0.30 | 0.15 | 0.10 | 余量 Balance |
), ArticleFig(id=1228282215084257555, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282195798848077, language=EN, label=Tab.2, caption=
Fitted values of material constants for the Paris formula
, figureFileSmall=null, figureFileBig=null, tableContent=
| 编号Number | 均值 Mean |
|---|
| CT1 | CT2 | CT3 | CT4 |
|---|
| lg C | -6.034 5 | -5.985 8 | -6.266 0 | -6.040 3 | -6.081 7 |
| m | 1.650 4 | 1.603 7 | 1.885 2 | 1.674 4 | 1.703 4 |
), ArticleFig(id=1228282215193309463, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282195798848077, language=CN, label=表2, caption=
Paris公式材料常数拟合值
, figureFileSmall=null, figureFileBig=null, tableContent=
| 编号Number | 均值 Mean |
|---|
| CT1 | CT2 | CT3 | CT4 |
|---|
| lg C | -6.034 5 | -5.985 8 | -6.266 0 | -6.040 3 | -6.081 7 |
| m | 1.650 4 | 1.603 7 | 1.885 2 | 1.674 4 | 1.703 4 |
), ArticleFig(id=1228282215293972764, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282195798848077, language=EN, label=Tab.3, caption=
Comparison of coefficient of determination R2 based on different ΔKeq models
, figureFileSmall=null, figureFileBig=null, tableContent=
| Irwin模型 Irwin model | Tanaka模型 Tanaka model | Richard模型 Richard model | Demir模型 Demir model |
|---|
决定系数R2 Coefficient of determination R2 | 0.942 1 | 0.878 4 | 0.847 1 | 0.865 2 |
), ArticleFig(id=1228282215377858844, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1228282195798848077, language=CN, label=表3, caption=
基于不同ΔKeq模型的决定系数R2对比
, figureFileSmall=null, figureFileBig=null, tableContent=
| Irwin模型 Irwin model | Tanaka模型 Tanaka model | Richard模型 Richard model | Demir模型 Demir model |
|---|
决定系数R2 Coefficient of determination R2 | 0.942 1 | 0.878 4 | 0.847 1 | 0.865 2 |
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