公开(公告)号：JPH07134085A

公开(公告)日：1995-05-23

申请号：JP30321793

申请日：1993-11-10

Applicant: NAT AEROSPACE LAB

Inventor： FUJISAWA YOSHIAKI ,  TAKI MASANOBU ,  MATSUSUE KATSUTOSHI

IPC: G01N3/30

Abstract: PURPOSE:To make possible the determination of strength characteristic of ceramics simply and quickly in the tensile impact destruction at a high temperature from the normal temperature using a test piece with a simple shape by arranging a grabber, a strain gauge, a hollow pipe, a weight, a data measurement processing/displaying device, a heating furnace and the like. CONSTITUTION:A weight 8 is set in a hollow cylinder pipe 7 hanging on a grabber 2 at a prescribed height and is made to fall with a manual type trigger. The weight 8 falls by a dead load and hits the bottom part of the cylinder pipe 7 at a fixed speed. The current impact power is transmitted to a wall surface of the cylinder pipe 7 to be propagated to a test piece 1. As the cylinder pipe 7 is not bound with respect to the rotation about a vertical axis no twisting load is applied on the test piece 1. The speed at the final end of the weight 8 is detected with an optical type sensor provided at a lower part of the cylinder pipe 7 to be sent to a data measurement processing/display device 9. Heat from a heating furnace 4 (controllable to 1,600 deg. from the normal temperatures is applied to the test piece 1. Data from the strain gauge 3 stuck on the grabber 2 are sent to the device 9 and undergoes a measurement processing.