tailieunhanh - ACOUSTIC EMISSION - RESEARCH AND APPLICATIONS

Acoustic emission (AE) is a phenomenon in which elastic or stress waves are emitted from rapid, localized change of strain energy in material. The practical application of the AE first emerged in the 1950's, but only in the last 20 years the science, technology and applications of AE have progressed significantly. Currently AE has become one of the most important non-destructive testing techniques, which is widely applied in: fatigue cracks detection and location in pressure vessels and pipelines, partial discharge sources detection and location in power transformers and rotating machinery, damage assessment in fibre-reinforced. | ACOUSTIC EMISSION -RESEARCH AND APPLICATIONS Edited by Wojciech Sikorski Acoustic Emission - Research and Applications http 50270 Edited by Wojciech Sikorski Contributors Giovanni P. Gregori Zahari Taha Zdunek Kowalski Runar Unnthorsson Hyun-Do Yun Won-Chang Choi Giovanna Zimatore Maria Patrizia Orlando Domenico Stanzial Franciszek Witos Wojciech Sikorski Published by InTech Janeza Trdine 9 51000 Rijeka Croatia Copyright 2013 InTech All chapters are Open Access distributed under the Creative Commons Attribution license which allows users to download copy and build upon published articles even for commercial purposes as long as the author and publisher are properly credited which ensures maximum dissemination and a wider impact of our publications. After this work has been published by InTech authors have the right to republish it in whole or part in any publication of which they are the author and to make other personal use of the work. Any republication referencing or personal use of the work must explicitly identify the original source. Notice Statements and opinions expressed in the chapters are these of the individual contributors and not necessarily those of the editors or publisher. No responsibility is accepted for the accuracy of information contained in the published chapters. The publisher assumes no responsibility for any damage or injury to persons or property arising out of the use of any materials instructions methods or ideas contained in the book. Publishing Process Manager Ana Pantar Technical Editor InTech DTP team Cover InTech Design team First published March 2013 Printed in Croatia A free online edition of this book is available at Additional hard copies can be obtained from orders@ Acoustic Emission - Research and Applications Edited by Wojciech Sikorski p. cm. ISBN 978-953-51-1015-6 INTECH open science I open minds free online editions of InTech Books and Journals can be found at .