振動法による薄片の曲げ剛性測定時における形状効果について
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概要
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This paper suggests that some suitable shapes of a thin strip should be chosen when the Young's modulus E is measured by the lateral vibration of a cantilever. The increase in length of strip will cause, at last, the lateral buckling by the weight of itself, on the other hand, the shorter in length, the nearer to a rectangular plate. For the cases above mentioned, the frequencies of strip deviate from the value expected as a cantilever. The experiments are carried out by varying the length of strip from 1 cm to 30 cm by 1 cm step, the thickness being kept constant. As the result of experiments, it can be concluded that the suitable range has been found between l/b=10 and 20,where l and b denote the length and width of the cantilever respectively. The difference of the value E by the order of vibrations shown by Dr. Bock cannot be recognized in the author's experiments.
- 一般社団法人日本機械学会の論文
- 1951-12-20