Numerical Simulation of Electromagnetic Fluz Leakage in Application of Internal Defects Prediction of Metal Parts
Metal products were widely used at a variety of industry, so it is essential to predict the security and the usability without the destructive testing for the desired production efficiency under the different their working conditions. Recently, the plasma deposition dieless manufacturing process (PDM) is an innovative and promising application of plasma heat source with extensive industrial potential for refractory and intractable material part or prototype, rebuilding of worn components and especially the direct rapid fabrication of functionally graded materials (FGMs). However, Residual stress and distortion induced by the highly localized transient heat and strongly nonlinear temperature distributions would likely promote undesired and unpredictable warps and cracks in this process. Thus, to distinguish the internal defect from the significant discontinuities during the nondestructive testing of the metal parts, in this paper, the finite-element method (FEM) was applied to predict the electromagnetic distribution. According to the difference the magnetic flux leakage analysis, distinction threshold was built by the ratio of the peak-to-peak amplitudes of the raw inspecting signal anomaly. Computational results show that it is potential to decrease the testing period and improve the security of metal parts, in particular, the micro-raw and hole in the metal parts can be predicted, thus the possiblyintended breakage would be improved.
H.O.Zhang Y.Z.Yang G.L.Wang Haiping Zou
State Key Laboratory of Digital Manufacturing Equipment and Tech.Huazhong University of Sci.& Tech., State Key Laboratory of Material Processing and Die & Mould Tech.Huazhong University of Sci.& Tech.,
国际会议
Progress in Electromagnetics Research Symposium 2009(2009年电磁学研究新进展学术研讨会)(PIERS 2009)
北京
英文
979-982
2009-03-23（万方平台首次上网日期，不代表论文的发表时间）