TESTING OF STIFFNESS BASED ON ACOUSTIC EMISSION FOR PDC, PCBN OR OTHER INSERTS FROM HARD OR ULTRAHARD MATERIAL Russian patent published in 2015 - IPC G01N3/58 G01N3/12 

FIELD: testing equipment.

SUBSTANCE: use: for testing of true strength or stiffness of hard or ultrahard components, using acoustic emission. The substance of the invention consists in the fact that a testing device on the basis of acoustic emission comprises a tested sample including hard surface, an acoustic sensor, an indentor, connected with the hard surface, and a load. The load is applied to the indentor, which transfers load to the hard surface. The load is increased to peak load, maintained for a certain period of time and then reduced. The acoustic sensor is connected as capable of data transmission with the tested sample, and detects one or more acoustic events arising in the tested sample. The testing system on the basis of acoustic emission includes a data recording unit connected with the testing device. The data recording unit records data from the testing device. On the basis of received data they objectively determine sample stiffness, and according to stiffness the sample may be arranged in a certain order in respect to other samples.

EFFECT: increased accuracy of stiffness testing on the basis of acoustic emission.

28 cl, 23 dwg