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本工作对一种飞机壁板试样疲劳试验中的裂纹进行了声发射定位和监视,以探索飞机某些构件强度试验时用声发射监视结构完整性的可能性。一、定位的基本原理假定零件中 x、y 位置有一声源释放出声发射弹性波,这一弹性波特定的波模态有一传播速度 C,那么,在平板零件中波前相当于一个圆向外传播。如图1所示,弹性波首先到达第1号传感器,相继到达第3和第2号传感器。这就是说1,2、3三个传感器接收到同一声发射信号有一
In this work, the location of the crack in the fatigue test of an aircraft siding specimen was monitored and monitored to explore the possibility of monitoring the structural integrity of the aircraft by acoustic emission during the strength testing of certain components of the aircraft. First, the basic principles of positioning Suppose the parts x, y position has a sound source to release the acoustic emission elastic wave, this elastic wave has a specific wave mode propagation velocity C, then, in the flat part of the wave front is equivalent to a circle External communication. As shown in Fig. 1, the elastic wave first arrives at the No. 1 sensor and reaches the No. 3 and No. 2 sensors one after another. This means that one, two, three sensors receive the same AE signal