舶用大形鍛鋼品に対する超音波探傷試験に関する一,二の問題点

概要

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In the ultrasonic inspections for large forgings where is utilized the ultrasonic equipment of various kinds, it is an already accepted opinion that the pattern appearing on the cathod-ray tube (CRT) considerably varies as well by the factors other than the flaw of the materials. And this is the major cause making assesment of the pattern difficult. Part I of this paper states on the results of experiments carried out in order to make clear the varying factors and quantitative relationship between the factors, in an aim to obtain the fundamental information to make the inspection standards for the interior flaw. Part II states on the results of experiments carried out in order to obtain the suitable detecting method for fatigue cracks which may occur at the under sleeve part of propeller shaft in service, and also to seek for the relationship between the pattern and crack.
財団法人日本海事協会の論文