高温におけるアルミニウムの高ひずみ速度圧縮試験

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the studies in metallic and non-metallic materials have made considerable progress in recent years. Still they have some problems concerning their properties which have not been made clear. In particular, it has become increasingly important to clarify the behaviour of the materials when they deform at high strain rates. the high strain rate compression testing apparatus which is manufactured for trial, and the experimental results which are obtained by using the apparatus to clarify the effect of the temperature and the strain rate on the strength of aluminium, are described in this paper. The principle of the experimental method is as follows. The mechanical parts consist of a projectile apparatus, a striking bar, an input bar, an output bar and a throw-off bar. the specimen is mounted between the input bar and the output bar. The impact load is provided with the striking bar which is projected from the projectile apparatus. A pulse of compression caused by impact, travels into the input bar, compresses the specimen, and is transmitted to the output bar and finally to the throw-off bar. The throw-off bar absorbes the surplus energy. The striking bar, the input bar and the output bar are all steel bars of 17 mm diameter and 500 mm length. The stress and strain to be produced in the specimen can be obtained from the analysis of the stress-time patterns in the input and the output bars. The patterns are drawn on the screen of the two-elements synchroscope by the strain gauges cemented at the midpoints of the input bar and the output bar.
社団法人日本材料学会の論文
1964-03-15

高温におけるアルミニウムの高ひずみ速度圧縮試験

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