The standard samples of rectangle thin plate including crack fixed at four sides is set up with computer imitation technic,and the crack diagnosis system based on neural network is developed.

• 采用计算机仿真技术建立了四边夹支矩形板裂纹损伤的标准谱，并研制出相应的基于人工神经网络的裂纹诊断系统。