ニッケルはくひずみ計に関する基礎的研究 (較正試験および写真比較法による計測)

概要

論文の詳細を見る
Strain gauges made of nickel foil are devised for measuring the elastic surface stress of a specimen subjected to repeated loads. The nickel foil about 10μm thick composed of the crystal grains of 30μm in mean diameter is made by annealing the foil of nickel plating at 950℃ for 60 s in a vacuum. Sticking the nickel foil on the surface of the specimen, the elastic stress is measured by observing slip-bands in the foil resulting from repeated strains. The calibration tests of the foil under rotating-bending are carried out at several test temperatures. The range of applicable temperatures of the gauge, and the relation between the appearance of slip-bands and the magnitude of cyclic stress are investigated. Using the "standard photographs" which show the relation between the density of slip-bands and the cyclic stress, the peak stresses in grooved shafts under bending are measured.
社団法人日本機械学会の論文
1989-04-25