caa a22 4500 477080634 CHVBK 20180405111448.0 cr unu---uuuuu 170330e19960601xx s 000 0 eng 10.1007/BF00729135 doi (NATIONALLICENCE)springer-10.1007/BF00729135 Digital image processing of crack growth using a modified caustic set-up [Elektronische Daten] [Chern Lin, Rong-Seng Chang] A digital image processing method to analyze the fringes of a modified caustic is described. The experiment is easy to perform and simple, and the image processing technique and detecting system can operate automatically, precisely, and quickly. Recording with two video cameras two sets of caustic images during crack growth, the computers process data with a specified fringe counting algorithm. We obtained two complete sets of data, one providing a full field view of the distribution of stress and the other providing the stress intensity factor. Plenum Publishing Corporation, 1996 Digital image processing nationallicence caustics nationallicence crack growth nationallicence fringe counting algorith nationallicence Lin Chern Department of Automatic Control Engineering, Feng Chia University, Taichung, Taiwan aut Chang Rong-Seng Institute of Optical Sciences, National Central University Chung-Li, Taiwan aut Journal of Nondestructive Evaluation Kluwer Academic Publishers-Plenum Publishers 15/2(1996-06-01), 61-70 0195-9298 15:2<61 1996 15 10921 https://doi.org/10.1007/BF00729135 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00729135 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Lin Chern Department of Automatic Control Engineering, Feng Chia University, Taichung, Taiwan aut NATIONALLICENCE 700 1- Chang Rong-Seng Institute of Optical Sciences, National Central University Chung-Li, Taiwan aut NATIONALLICENCE 773 0- Journal of Nondestructive Evaluation Kluwer Academic Publishers-Plenum Publishers 15/2(1996-06-01), 61-70 0195-9298 15:2<61 1996 15 10921 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer