基于超声导波的螺栓轴向应力测量方法
杨宇1(
),杨昌群2,赵勃3,4()
),杨昌群2,赵勃3,4()
Measurement method of bolt axial stress based on ultrasonic guided waves
Yu YANG1(),Changqun YANG2,Bo ZHAO3,4()
),Changqun YANG2,Bo ZHAO3,4()
图7. 降噪处理前后超声导波回波信号的时频分析结果对比
Fig.7. Comparison of time-frequency analysis result of ultrasonic guided wave echo signals before and after noise reduction processing
