Patent ID: 11867667
Assignee: GUANGDONG JIAMEI CERAMICS CO., LTD
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 5:
6. The non-destructive testing method for the elastic modulus of the fine ceramic according to claim 2, wherein
the test sample is pretreated before testing, and the step of pretreatment comprises:
selecting at least 5 groups of test samples with different mechanical properties from fine ceramic to be tested, each group comprising at least 8 fine ceramic test samples with the mechanical properties, and placing the selected test samples into an environment with a temperature of 20° C.±2° C. and a relative humidity of 60%±5% for standing and curing for 48 h to obtain test samples;
ultrasonic testing and resilience testing of each test sample specifically comprise steps of:
at least 8 testing points that are distributed at an equal interval are uniformly selected, in advance, on each side surface of each test sample;
ultrasonic testing is performed once on the testing points to obtain an ultrasonic width-direction velocity VL and an ultrasonic thickness-direction velocity Vh of each testing point;
resilience testing is performed once on the testing points to obtain each resilience value R; and
a mean value of the read ultrasonic width-direction velocities VL is taken as an ultrasonic width-direction velocity effective value of the test samples; a mean value of the ultrasonic thickness-direction velocities Vh is taken as an ultrasonic thickness-direction velocity effective value of the test samples; and a mean value of the resilience values R is taken as a resilience effective value of the test samples.