真三轴霍普金森杆固体动态损伤与超声波传播测试方法

• Format: Patent
• Language: Chinese
• Published: 23.03.2021
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

本发明的真三轴霍普金森杆固体动态损伤与超声波传播测试方法，第一：在施加静态预应力和冲击荷载之前，记录并保存无静态预应力和冲击荷载作用下X、Y、Z方向完整的超声波信号，第二：施加静态预应力，第三：记录并保存施加静态预应力下X、Y、Z方向完整的超声波信号；第四：施加冲击荷载，利用三轴六向同步协调控制电磁加载系统对测试试样施加动态冲击荷载。第五：待动态冲击加载试验结束后，在不解除静态预应力下，再次记录并保存施加静态预应力和动态冲击荷载后X、Y、Z方向完整的超声波信号。本发明首次实现了原位保压状态下测试岩石、混凝土等固体材料动态冲击损伤演化及其对超声波传播速度，幅值和频谱等衰减规律的影响。 A method of using a true-triaxial Hopkinson bar to test dynamic damage to a solid and ultrasonic propagation comprises: first, before applying a static prestress and impact load, recording and storing complete ultrasonic signals in X, Y, and Z directions without a static prestress or an impact load; second, applying a static prestress; third, recording and storing complete ultrasonic signals in the X, Y, and Z directions while applying the static prestress; fourth, applying an impact load, using a three-axis six-direction synchronous coordinated controlled electromagnetic loading system to apply a dynamic impact load to a cubic sample (70); and fifth, after the dynamic impact load test is completed, and without releasin