金属の内部摩擦の振動数による変化(続報)

概要

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The writers propose a new theory concerning the internal friction and have deduced a formula giving theoretically the logarithmic decrement of vibration. The formula involves a term deduced equally from the thermo-elastic theory representing the decrement due to the retardation of the deformation and decreasing approximately in inverse proportion to the frequency. It also includes another termconcerning decrement due to the solid friction approximately independent of the frequency. The logarithmic decrement of carbon steel, cold drawn or water quenched and annealed at low temperature, is measured in several frequencies, and it is ascertained that the internal stress can be determined from the constants defining the position of the decrement curve due to the retardation and the amount of the decrement due to the internal solid friction.
一般社団法人日本機械学会の論文
1952-03-15