The preparation of testing reference materials can uniform the testing standards,improve the detection accuracy,and ensure the product quality.In this paper,the DZ-I standard reference material test block was prepared,and its chemical composition,grain size,and size were determined by learning from the general reference material preparation technology and combining with the technical characteristics of the special reference materials of the reference test block for the nondestructive ultrasonic testing.The speed of sound and sound attenuation were used as the fixed parameter of the DZ-I reference material test block,and the water immersion pulse reflection method and the multiple reflection echo method were used to measure and calculate the parameters.The results show that the DZ-I reference material test block meets the requirements of the stand-ard,and the sound velocity and sound attenuation of the test block can ensure the consistency and stability of the DZ-I refer-ence material test block.In practical application,the use of such reference materials can provide accurate and reliable techni-cal basis for the process of the ultrasonic nondestructive testing,and ensure the accuracy and consistency of the test results.
关键词
无损检测/标准样品/DZ-I试块/声速/声衰减
Key words
non-destructive testing/reference material/DZ-I test block/sound speed/sound attenuation
维普
万方数据