理化检验-物理分册2026，Vol.62Issue(1)：26-29,4.DOI:10.11973/lhjy-wl240284
平面应变断裂韧性K1c不确定度评定
Uncertainty evaluation of plane strain fracture toughness K1c
李凯 1卢奇 1牛伟 2巴发海 1郑程1
作者信息
- 1. 上海材料研究所有限公司上海市工程材料应用与评价重点实验室,上海 200437
- 2. 宝武特种冶金有限公司宝武特冶检测中心,上海 200940
- 折叠
摘要
Abstract
According to the GUM method in JJF 1059.1-2012,the uncertainty of fracture toughness K1c of 7075-T651 aluminum alloy was evaluated.Pre-crack test conditions:stress ratio R=0.1,frequency f=20 Hz,waveform was sine wave,termination crack length a=25 mm.According to the Shapiro-Wilk test,the fracture toughness followed a normal distribution.The fracture toughness K1c test results of 7075-T651 aluminum alloy could be expressed as K=25.3 MPa·m0.5,U=0.9 MPa·m0.5,k=2 and degree of freedom νeff=10.关键词
不确定度评定/断裂韧性/GUM法/7075-T651铝合金Key words
evaluation of uncertainty/fracture toughness/GUM method/7075-T651 aluminum alloy分类
通用工业技术引用本文复制引用
李凯,卢奇,牛伟,巴发海,郑程..平面应变断裂韧性K1c不确定度评定[J].理化检验-物理分册,2026,62(1):26-29,4.
