NOVEL BENDING BASED METHODS FOR INTERFACE FRACTURE ENERGY MEASUREMENT OF THERMAL SPRAY COATINGS
Nagamani Jaya BalilaGrand Ballroom C
A novel modified cantilever beam method and modified clamped beam method with DIC (Digital Image Correlation) is developed to measure the interface fracture energy of ceramic/metal interface. The experimental execution for these geometries is demonstrated on an Air Plasma Sprayed (APS) YSZ coating on a steel substrate. For modified cantilever method, a pre-crack is first made along the interface, followed by the interface test. These methods use the same geometry for both pre-cracking and testing. The value of interface fracture energy is obtained as the critical energy release rate, Gc, using numerically computed values of J-integral. The results of both the geometries are compared.
Indian Institute of Technology, Bombay, Mumbai, India
Thu 17:30 - 17:50
Brittle Fracture: 100 years After Publication of Griffith’s Theory