论文部分内容阅读
使用ANSYS软件,对铸钢薄板内部裂纹的电磁激励红外热像检测进行了数值模拟研究。并通过正交试验设计,综合研究了激励电流密度和频率、线圈提离高度、裂纹深度以及裂纹的埋藏深度等因素,对最大温差、可检测持续时间以及检测响应速度等缺陷可检测性指标的影响;通过极差分析,比较了各因素对最大温差的影响作用。结果表明,对于长度、宽度确定的裂纹缺陷,以上各因素对其可检测性影响的重要程度依次为:激励电流密度>激励频率>裂纹的埋藏深度>线圈提离高度>裂纹深度。
Using ANSYS software, numerical simulation research on the electromagnetic excitation infrared thermography of cracks in the cast steel sheet was carried out. Through the orthogonal design, the factors such as excitation current density and frequency, lift-off height of coil, depth of crack and burial depth of crack were comprehensively studied. The maximum temperature difference, detectable duration and detectable response speed Influence; through the range analysis, compared the impact of various factors on the maximum temperature difference. The results show that for the length and width of the crack defects, the importance of these factors on the detectability is as follows: excitation current density> excitation frequency> buried depth of crack> lift height of coil> crack depth.