损伤长度 meaning in English

damage length

Taking the natural frequency arid the ratio of frequency drop as input characteristic parameters , crack damage in the cylindrical supporting shell of a portal crane is diagnosed and its length and position are forecasted , applying finite element emulation and artificial neural network technologies
摘要应用有限元仿真技术和人工神经网络模型，以反映结构损伤程度的固有频率和损伤的频率下降率作为神经网络输入的特徵参数，对门座起重机筒形支柱上出现的裂纹损伤长度和位置进行了综合诊断和预测分析。