Dianci bileiqi本研究选用直径24 mm的芯棒加工20 个符合压缩弹性模量测试用的芯棒样品，参照标准GB/T 1448-2005，重点讨论涉及芯棒压缩弹性模量的测试方法和装置。试验结果表明试验机与千分表联合测试方法下，在弹性变形范围内分五级压缩负荷加载，测得的压缩弹性模量值存在一定的分散性，且波动较大，说明这种方法有一定的局限性和缺陷性，多次测量得出的压缩弹性模量值准确度不高；试验机与光栅尺及配套工装联合测试方法下，测得压缩弹性模量值准确度高，分散性小，说明这种试验方法具有很高的稳定性和再现性；测试压缩弹性模量时 ...
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