光学的高速伸び計とそれを利用した衝撃引張試験装置の試作

概要

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An optical high velocity extensometer was developed and used on a new tensile impact apparatus for high speed testing of brittle and ductile materials. The extensometer employed a set of optical fibers mounted on the item being investigated and PSD sensors to measure displacements of the fiber tip positions on the item from which laser rays were emitted. The system was studied with regard to its frequency response and the meter was found to be quick with a response of 100 kHz or more. A tensile impact apparatus equipped with the meter and a piezo gauge was constructed. Results of tests on dumbbell type specimens of PBT/PPE polymer alloy showed that the apparatus was excellent for determination of the force deformation relationship even for ductile materials which undergo necking.
社団法人日本機械学会の論文
1998-12-25