This standard specifies the method principle, instrument and equipment, specimen, test condition, pre-test parameter determination, testing procedures, test data processing and test report of bending stress relaxation test method for copper and copper alloys materials.
This standard is applicable to the determination of bending stress relaxation properties of copper and copper alloys sheet and strip with thickness of 0.1 mm-1.0 mm under constant strain condition.
定价: 372元 / 折扣价: 317 元 加购物车
This standard specifies the test method for measuring residual stress by ultrasonic critical refracted longitudinal wave (creeping wave).
This standard is applicable to metallic and non-metallic solid materials which have a good acoustic permeability to determine residual or loading stresses non-destructively.
定价: 456元 / 折扣价: 388 元 加购物车
This standard specifies the terms and definitions,symbols and designations, principle, methods, evaluation of the effect for eliminating of residual stresses in metallic materials by ultrasonic impact treatment.
This standard is applicable to eliminating of residual stresses by ultrasonic impact treatment for metallic components with thickness greater than 4 mm, strength grades up to a maximum yield strength of 900 MPa and extension after fracture larger than 5%.
定价: 372元 / 折扣价: 317 元 加购物车