公开(公告)号：EP2677297A4

公开(公告)日：2018-06-13

申请号：EP12747578

申请日：2012-02-08

Applicant: NAT INSTITUTE FOR MATERIALS SCIENCE

Inventor： FURUYA YOSHIYUKI

IPC: G01N3/32 ,  G01N3/06

CPC classification number: G01N3/32 ,  G01N29/12 ,  G01N29/228 ,  G01N29/2418 ,  G01N2203/0005 ,  G01N2203/0008 ,  G01N2203/0226 ,  G01N2203/0658 ,  G01N2291/0258 ,  G01N2291/02827

Abstract: Disclosed are a method for ultrasonic fatigue testing at high temperature and a testing device without needing preliminary Young's modulus measurement. Disclosed are also a method for ultrasonic fatigue testing at high temperature and a testing device capable of securing heat insulation for protecting a vibrator without water cooling of a horn, measuring end surface displacement of a test specimen in a noncontact manner, and solving problems of a noncontact temperature measurement of a test specimen and temperature control. Young's modulus is calculated by inverse calculation, a rod and a horn having heat resistance, heat insulation, and temperature symmetry of a test specimen are used, laser light is irradiated and received from an oblique direction to measure end surface displacement, and a noncontact temperature measurement of a test specimen by a black-body coating and a two-color radiation thermometer and temperature control by a high-frequency coil having a special shape are performed.