IMAGE PROCESSING TECHNIQUES IN ANALYSIS OF METAL FRACTURE SURFACE
YAN Yunhui;WANG Dejun(Northeastern University; Shenyang 110006)(Manuscript received 1995-08-21)
Cite this article:
YAN Yunhui;WANG Dejun(Northeastern University; Shenyang 110006)(Manuscript received 1995-08-21). IMAGE PROCESSING TECHNIQUES IN ANALYSIS OF METAL FRACTURE SURFACE. Acta Metall Sin, 1996, 32(5): 552-556.
Abstract On the base of establishment of a computer aided instrumentation and analysis system for analyzing metallic fracture surface, some methods in analysis of fracture surface, by means of computer graphics and image processing techniques for detecting of edges and corresponding points, are described in detail. A way based on the method of weighted least squares for measuring and calculating the sizes of fatigue slip band and fatigue striation spacing is presented. An improved Levine's algorithm of detecting a pair of corresponding points is proposed according to the principle of measuring distance from stereo vision , which is used in measuring the relative depth on metallic fracture surface so that the precision and efficiency of computations are all improved.
SU Runxi; SONG Shizhe (School of Materials Science and Engineering; Tianjin University; Tianjin 300072)Correspondent. SONG Shizhe; professor; Tel: (022)27405823; Fax: (022)27404724;E-mail: szsong@tju. edu. cn. IN-SITU IMAGE GRAB AND ANALYSIS FOR PITTING PROCESS OF 304 STAINLESS STEEL[J]. 金属学报, 1998, 34(9): 966-970.
[3]
YAN Yunhui; WANG Dejun;HUANG Yuhua; WANG Qinghao; WANG Tongbo (Northeastern University; Shenyang 110006)(Manuscript received 1996-05-20; in revised form 1996-07-04). FOURIER TRANSFORM METHOD FOR ANALYSIS OF FATIGUE FRACTOGRAPHS[J]. 金属学报, 1997, 33(4): 386-390.
[4]
YU Yingda; PING Dehai; PENG Hongring; LI Douxing; YE Heneaiang(Laboratory of Alomic Imaging of Solids; Institute of Metal Research; Chinese Academy of Sciences;Shenyang 110015). THE APPLICATION OF ENERGY-FILTERED IMAGING TO MATERIALS RESEARCH[J]. 金属学报, 1997, 33(3): 233-240.
