回归区间对柔度法测量断裂韧度的影响

钢铁研究, 2003, 31(1): 41-44. doi: 10.3969/j.issn.1001-1447.2003.01.011

回归区间对柔度法测量断裂韧度的影响

邱保文 ^1, , 张彤 ^2, , 邝兰翔 ^3, , 谭伯聪 ^4,

1.武汉钢铁集团公司

2.武汉钢铁集团公司

3.武汉钢铁集团公司

4.武汉钢铁集团公司

关键词：断裂韧度 , 柔度法 , 回归分析

EFFECT OF REGRESSION AREA ON FRACTURE TOUGHNESS MEASURED BY COMPLIANCE METHOD

探讨了用柔度法测量断裂韧度J1c及加载/卸载过程回归区间对测量结果的影响,通过统计分析,给出了最佳统计回归区间(40%～100%).

参考文献

[1]	GarwoodSJ;Willoughby A A .On the Unloading Compliance Method of Deriving Single Specimen R-Curves in Three-Point Bending[J].Elastic-Plastic Fracture ASTM STP 803 ASTM,1978,2:382-397.
[2]	BarattaFI;Kapp J A;Underwood J H .More on Compliance of the Three-Point Bend Specimen[J].International Journal of Fracture,1985,28:41-45.
[3]	WuSX .Crack Length Calculation Formula for Three-Point Bend Specimen[J].International Journal of Fracture,1984,24:33-35.
[4]	ASTM E647-95a, Standard Test Method for Measurement of Fatigue Crack Growth Rates[J].ASTM Standard,1996,301:627-641.
[5]	GB 2038-1991.金属材料延性断裂韧度J1c试验方法[A].,1996

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