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本文介绍了楔型冲击加载双悬臂梁(D.C.B)试件的动态测试技术。实测了冲击力随时间变化曲线;裂纹尖端及试件中部应变随时间变化曲线。并由此测试结果分析计算试件的动态断裂韧性K_(1d)随时间变化曲线,从而为准确的动态强度计算打下了基础。
This paper presents a dynamic test technique for a wedge impact load double cantilever (D.C.B) specimen. The curve of the impact force with time was measured, and the curve of the crack tip and the center of the specimen with time was measured. From this test result, the dynamic fracture toughness K_(1d) curve of the specimen is calculated and analyzed over time, which lays the foundation for accurate dynamic strength calculation.