精细陶瓷(高级陶瓷､高级工业陶瓷)单片陶瓷的断裂韧性试验方法单刃V形切口梁法(SEVNB)Fine ceramics (advanced ceramics, advanced technical ceramics) -- Test methods for fracture toughness of monolithic ceramics -- Single-edge V-notch beam (SEVNB) method