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多次冲击条件下裂纹尖端应力强度因子为 K_1=(WE/BW)请下载后查看，本文暂不支持在线获取查看简介。(1/2)F(a/W),并用柔度法对公式进行了实验标定。用这种方法只需从试样断口上测出临界裂纹尺寸,便可从有关曲线上查得材料的断裂韧性,把断裂韧性的测试设备及测试技术大大地简化。所测得的结果相当于加载速率为10~5kg/mm~(3/2)/秒下的动态断裂韧性。对所用小试样测得数据有效性进行了分析,并指出临界裂纹在 a/W 0.36～0.6范围内,所测得的断裂韧性值有效。
The stress intensity factor of crack tip under multiple impact conditions is K_1 = (WE / BW) Please check after download, this article does not support the online introduction. (1/2) F (a / W), and the formula was experimentally calibrated with the flexibility method. In this method, the fracture toughness of the material can be found from the relevant curve by simply measuring the critical crack size from the fracture surface of the sample, and the test equipment and the testing technique for fracture toughness can be greatly simplified. The measured results correspond to the dynamic fracture toughness at a loading rate of 10 to 5 kg / mm to (3/2) / sec. The validity of the measured data of the small sample used was analyzed and the critical fracture toughness value was found to be within the range of a / W 0.36 ~ 0.6.