通过声发射线性定位技术寻找疲劳载荷下的材料损伤源，在疲劳加载机的作用下，对08AL铝制小板结构进行疲劳损伤试验。通过安装在试样上的声发射传感器获取声发射信号经过试样的延时时间。在接收到因损伤引发的声发射信号延时数据后，通过线性震源定位算法识别裂纹位置，并利用断铅试验等来验证分析所应用算法的准确性和确定08AL铝制小板在疲劳载荷作用下的失效部位。结果表明，声发射线性震源定位算法可以清晰有效地对结构损伤源进行定位识别。

This article aims to find the source of material damage under fatigue load through acoustic emission linear positioning technology. The main task is to carry out fatigue damage test on 08AL aluminum small plate structure under fatigue loading. The acoustic emission sensor installed on the sample obtains the delay time of the acoustic emission signal propagating through the sample. After receiving the delay data of the acoustic emission signal caused by the damage, the linear source location algorithm is used to identify the location of the crack, and the lead breaking test is used to verify the accuracy of the applied algorithm and to find the failure location for the the 08AL aluminum small plate under the fatigue load. The test results show that the acoustic emission linear seismic source location algorithm can clearly and effectively identify the source of structural damage.