K-0731 衝撃引張試験における力学特性の測定方法に関する検討(S10-1 衝撃材料試験における新展開(1))(S10 衝撃材料試験における新展開)

概要

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Measurement and evaluation of the stress-strain curves under impact loading conditions have not been well established due to difficulties in the measurement such as superimposed oscillation mainly caused by inertial effect. The aim of the present study is to investigate the measuring method in impact tensile tests to determine tensile properties at high strain rate. Impact tensile tests are carried out using a split-Hopkinson bar apparatus and servo- hydraulic impact testing machine. In order to record true load-time and strain-time histories avoiding the effects of oscillation, strain gages are attached onto specimen surfaces with two different gage sections to measure load directly in the case of the servo-hydraulic impact testing. On the other hand, an impact absorber is used to eliminate the superimposed oscillations for the split-Hopkinson bar apparatus.
一般社団法人日本機械学会の論文
2001-08-22