Device for testing fracture toughness of test piece in corrosion environment

• Main Authors: YAN YUSHENG, XU LIANYONG, ZHONG SHIFANG, HAN YONGDIAN, ZHAO LEI, HAO KANGDA
• Format: Patent
• Language: Chinese; English
• Published: 03.02.2023
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention provides a device for testing fracture toughness of a test piece in a corrosion environment, and belongs to the field of material performance testing, the device specifically comprises a reaction kettle unit and a testing unit, one side of a reaction kettle main body in the reaction kettle unit is provided with an opening, and the opening is connected with an extensometer sleeve and an elastic film to realize sealing; meanwhile, a liquid through hole and an air inlet hole are formed in the reaction kettle main body; the extensometer sleeve extends into the reaction kettle main body and is connected with the elastic film; the testing unit comprises a fixed knife edge and an extensometer, and the fixed knife edge is arranged on the outer side of the reaction kettle main body and penetrates through the elastic film to be fixed on a to-be-tested piece; the extensometer is connected with the fixed knife edge and used for monitoring the deformation amount of the fixed knife edge. The extensometer is s