J191032 極低温度から極高温度域にわたる縦弾性係数値の衝撃音による測定([J19103]構造・材料の高度化に向けた宇宙工学と材料力学の展開(3))

概要

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It is impossible to design structures without Young's modulus value. Structures in space is put under low temperature condition around ・70 -C. And when a spaceship returns back to the earth, outer material of the ship is exposed to very high temperature near 1400 -C. Then a design for structures in space needs Young's modulus value over wide range of temperature. We have proposed a method to measure Young's modulus value employing impact sound. The method needs small rectangular specimen, 4x5x50. Putting a specimen into atmosphere filled with liquid nitrogen vapour or heated up by furnace, Young's modulus values on steel, pure cupper and aluminium alloy were measured with ease employing the method over -190-C to room temperature and over room temperature near to melting point temperature of the materials.
一般社団法人日本機械学会の論文
2011-09-11