PDC, acoustic radiation toughness test for PCBN or other high hardness or ultra-high hardness of the material,

摘要

Rock samples with the first surface and the indenter is connected to the acoustic sensor and the first surface acoustic emission test apparatus, and a load. Loaded on the indenter, load is transmitted on said first surface by -Ko. Acoustic sensor detects acoustic events of one or more are connected to communicate with the rock sample generated in the rock sample. Acoustic emission testing system includes a data recorder that is communicatively coupled to the acoustic radiation test apparatus. Data recorder, to record the data from the acoustic emission test equipment. Based on the received data, as compared to the toughness of the other samples, is determined objectively, the toughness of the sample can be ranked. Is increased to maximum load, and the hold period prescribed in said maximum load, then the load is reduced. [Selection] Figure 16