A Statistical Model of Quantitative Relationship between Striation Spacings and Fatigue Crack Growth Rates

材料科学技术（英文）, 1989, 5(6): 407-411.

A Statistical Model of Quantitative Relationship between Striation Spacings and Fatigue Crack Growth Rates

YANG Jingjun , KE Wei Institute of Corrosion and Protection of Metals , Academia Sinica , Shenyang , China. To whom correspondence should be addressed.

Keywords： striation spacing , null , null

Fatigue crack growth experiments were per- formed on A1 alloy LD 10 and Ti-6A1-4V alloy. Fatigue striation spacings and the deviation angles between the direction of micro-crack growth and that of macro-crack growth were quanti- tatively measured on fracture surface using scanning electron microscope. A statistical model of the relationship between striation spacings and fatigue crack propagation rates was developed on the basis of a statistical analysis of the deviation angles, Good agreement between experimental results and theoretical results calculated with the present model was obtained.

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YANG Jingjun KE Wei Institute of Corrosion and Protection of Metals Academia Sinica Shenyang China. To whom correspondence should be addressed.
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A Statistical Model of Quantitative Relationship between Striation Spacings and Fatigue Crack Growth Rates

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