Papers by Author: J.W. Fan

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Authors: J.W. Fan, Jia Liang Guan, W.C. Wang, J. Guan, Xu Yue Wang
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Authors: Zheng Li, Shuman Xia, J.W. Fan, Xian Yue Su
Abstract: In this paper, the continuous wavelet transform by the Gabor wavelet is applied to analyzing flexural waves in a cantilever beam with an edge crack. The amplitudes and arrival times of the incident, reflected and transmitted waves at a certain frequency are extracted from the wave signals to identify the damage location exactly and estimate the damage extent qualitatively. The results show that this is an effective damage detection method and can be extended to the damage detection of complicated structures.
1373
Authors: Jia Liang Guan, J.W. Fan, C.M. Ma, Zhe Jun Yuan, Dong Ming Guo
355
Authors: Jia Liang Guan, J.W. Fan, C.M. Ma, Zhe Jun Yuan, Dong Ming Guo
437
Authors: Jia Liang Guan, J.W. Fan, C.M. Ma, Zhe Jun Yuan, Dong Ming Guo
419
Authors: J.W. Fan, J.L. Guang, Zh.J. Yue, G.P. Dong, Shi Sheng Zhou
Abstract: Focus on the accuracy problem in machining process of SK21 NC cam grinder, the precision-machining restriction condition equation and the calculation method of precision NC instruction are deduced. The reversible calculation model from NC instruction to the cam’s outline is given and a software package of error compensation is developed. Many error parameters which include the abrasion of the grinding wheel, load distortion of the grinding wheel axis, rotation precision of the cam axis and movement precision of the worktable are measured through experiments. The finally grinding experiments results show that the cam’s machining accuracy can be improved more than 50% by the error compensation method in this paper.
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