EXPANDED GRAPHITE Acceptance value for lateral expansion for non-standard impact test specimen of stainless steel 非标准试样冲击侧向膨胀量合格判定
Experimental study on the material dynamic fracture properties by instrumented Charpy impact test with single specimen method 单试样示波冲击法测定材料动态断裂特性的试验研究
Impact Test of Cack Specimen 裂纹试件的冲击试验
Spontaneous decay method and impact experimental method were used to test damping ratio and other dynamic character of the specimen in high or low temperature, respectively. At last, the conclusion that metal rubber specimen is fit for cushion element of Lunar Lander was obtained. 采用自由衰减法和冲击实验法分别对金属橡胶试件高、低温阻尼比和动力学特性进行了测试,最后得出了金属橡胶适合于用做月球着陆器中缓冲元件的结论。
Utilizing instrumented impact test, different determination methods for dynamic ductile fracture toughness J_ ( Id) using single specimen were compared. 利用示波冲击试验,以小角度多试样冲击试验结果为标准,对几种单试样测试材料动态弹塑性断裂韧度J(Id)值的方法进行了比较。
The instrumented impact test is a new development of impact test. It can measure and record the force acting on the specimen during the impact, to give detail information about the elastic, plastic deformation and fracture process of the specimen. 仪器化冲击试验通过测出试样在冲击过程中的载荷历程,能详尽地记录冲击过程中材料的弹性、塑性变形以及断裂等动态变化过程,成为冲击试验发展的新方向。
The ultrasonic echo signal processing method which based on the pulse of the reflection for echo signal processing is studied, which can analyze the defects of echo signal characteristics, their impact on the test specimen by the internal structure of the change. 本文采用基于脉冲反射法的超声回波信号处理方法对回波信号进行处理,使用该方法能够分析出缺陷对回波信号超声特性的影响及其被测试样内部结构的变化情况。