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Integration equipment and detection method for evaluating coating bonding strength based on interface fracture toughness

The invention discloses integration equipment and a detection method for evaluating coating bonding strength based on interface fracture toughness, belonging to the technical field of material surface engineering. With the equipment, a computer is used for controlling operation of four functional modules, including an ultrasonic detection module, a hardness testing module, a continuous press-in testing module and an interface crack detecting module; a man-machine interactive software system is used for processing acquisition and transmission of data of the functional modules and analysis operation and data display and output of an interface press-in mechanical model in an integrated manner; and through ultrasonic nondestructive measurement on elasticity modulus of a coating and a matrix and continuous press-in testing on a coating-matrix interface, quantitative detection on all parameters of an interface fracture toughness formula is completed in one equipment, and the critical load PC of coating-matrix interface fracture and the corresponding interface fracture toughness Kca are obtained. The equipment and the detection principle are clear, the modular design is beneficial to updating and expanding of a mechanical model library, and a detection sample is simple and convenient to prepare.
Owner:DALIAN UNIV OF TECH
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