机械顶砧磨损对Charpy试验结果的影响

IF 1.3 4区工程技术 Q3 INSTRUMENTS & INSTRUMENTATION

Journal of Research of the National Institute of Standards and Technology Pub Date : 2020-05-12 DOI:10.6028/jres.125.015

E. Lucon, R. Santoyo

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引用次数: 0

摘要

我们研究了Charpy机砧的磨损状态对测试结果的影响，方法是在配备新砧(符合ASTM E23[1]和ISO 148-2[2])和磨损砧(砧角半径和距离超出ASTM公差，但在ISO公差范围内)的机器上对NIST三个能级的试样进行冲击试验。所得到的结果，经统计分析，明确表明，磨损的铁砧倾向于增加所有能量水平的吸收能量。另一方面，数据变异性似乎不受铁砧磨损的显著影响。这项研究代表了NIST对由日本钢铁联合会标准化中心(东京，日本)牵头的国际努力的贡献。

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Influence of Machine Anvil Wear on Charpy Test Results

We investigated the influence of the state of wear of Charpy machine anvils on test results byperforming impact tests on NIST specimens of three energy levels with a machine equipped with new anvils (compliant with both ASTM E23 [1] and ISO 148-2 [2]) and worn anvils (anvil corner radii and distance outside ASTM tolerances, but within ISO tolerances). The results obtained, statistically analyzed, unequivocally show that worn anvils tend to increase absorbed energy at all energy levels. On the other hand, data variability does not appear to be significantly affected by anvil wear. This study represents NIST contribution to an international effort spearheaded by the Japan Iron and Steel Federation Standardization Center (Tokyo, Japan).

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来源期刊

Journal of Research of the National Institute of Standards and Technology 工程技术-物理：应用

自引率

33.30%

发文量

审稿时长

>12 weeks

期刊介绍： The Journal of Research of the National Institute of Standards and Technology is the flagship publication of the National Institute of Standards and Technology. It has been published under various titles and forms since 1904, with its roots as Scientific Papers issued as the Bulletin of the Bureau of Standards. In 1928, the Scientific Papers were combined with Technologic Papers, which reported results of investigations of material and methods of testing. This new publication was titled the Bureau of Standards Journal of Research. The Journal of Research of NIST reports NIST research and development in metrology and related fields of physical science, engineering, applied mathematics, statistics, biotechnology, information technology.