METHOD AND APPARATUS FOR EVALUATING, TESTING PROCESS CHARACTERISTIC OF METALLIC MATERIAL

摘要

PROBLEM TO BE SOLVED: To obtain an evaluation test method and an evaluating testing apparatus whereby a multiaxial load test can be carried out under a load condition of an actual machine. ;SOLUTION: A notch 2 to be tested is formed at an optional position in the circumference of a columnar test piece 1. A high frequency heating coil 8 is inserted to the test piece 1 and a thermocouple 3 is arranged at the notch 2. A temperature of the notch part 2 is measured. A temperature control device 9 controls a load of the high frequency heating coil 8, thereby controlling a temperature of the test piece 1. An upper and a lower parts of the test piece 1 are held by a chuck 17. A load is applied by a tensile test driving device 10 and a torsion driving device 11 under a load condition of an actual machine to the chuck 17 set at a testing machine stage 13. A temperature, a strain, a strain rate, a torsion and, a tension and compression of an independent stress component at the optional point of the test piece 1 during a multiaxial load test are measured by a load meter 4, a torque meter 5, a displacement meter 6 and an angle meter 7, whereby processing of a material is evaluated.;COPYRIGHT: (C)1999,JPO