| A review of the Effect of a/W ratio on fracture toughness (II)—experimental investigation in LEFM |
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| 作者姓名： | LI Qing-fen FU Yu-dong and XU Xiao-xueSchool of Mechanical and Electrical Engineering Harbin Engineering University Harbin China |
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| 作者单位： | LI Qing-fen，FU Yu-dong，and XU Xiao-xueSchool of Mechanical and Electrical Engineering，Harbin Engineering University，Harbin 150001，China |
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| 摘 要： | 1 INTRODUCTIONThe linear elastic fracture mechanics provides auseful means of determining a material’s toughness.However, deeply cracked standard laboratory speci-mens those have high level of constraint may not alwaysbe representative of those found in structural compo-nents. Structural components often exhibit compara-tively shallowand surface-breaking.We have previously shown that shallow crackshave greater COD andJ-integral values at initiationthan deeply cracked specimens in EPFM…
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