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 by performing impact tests on NIST specimens of three energy levels with a machine equipped with new anvils (compliant with both ASTM E23 and ISO 148-2) and worn anvils (anvil corner radii and distance outside ASTM tolerances, but within ISO tolerances).

本研究旨在探究夏比试验机砧座（Charpy machine anvils）的磨损状态对试验结果的影响。为此，我们采用具备三种冲击能量等级的美国国家标准与技术研究院（National Institute of Standards and Technology, NIST）试样，使用同一台试验机先后开展两组冲击试验：分别装配符合美国材料与试验协会（American Society for Testing and Materials, ASTM）E23与国际标准化组织（International Organization for Standardization, ISO）148-2标准的全新砧座，以及磨损砧座——该磨损砧座的砧座圆角半径与安装间距超出ASTM公差范围，但仍处于ISO公差允许区间内。