K-0743 計装化シャルピー衝撃試験における荷重計測に関する問題点(S10-4 衝撃材料試験における新展開(4))(S10 衝撃材料試験における新展開)

概要

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The load calibration in the instrumented Charpy impact test was performed to investigate the measuring method of accurate impact load. Decrease in specimen thickness results in slight decrease of calibration factors. This was attributed to strain localization near the region in which strain gages were attached. The results strongly suggested that the system must be calibrated for the different thickness of specimens to know accurate impact load. The accurate impact load was not measured from the gage around the end of slit which was introduced to release the constraining effect of deformation of the gage position from surrounding hammer; the effect of the vibration of the hammer appeared strongly around this position. However, it was possible to prevent the effect of such vibration by attaching the gage away from such position.
一般社団法人日本機械学会の論文
2001-08-22