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Practical Acoustic Emission Testing
Name: Practical Acoustic Emission Testing
Author: the japanese society for non destructive inspection eds.
Pages: 142
Year: 2016
Language: English
File Size: 6.26 MB
Downloads: 0
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The Japanese Society for Non Destructive Inspection Tokyo, Japan ISBN 978 4 431 55071 6 ISBN 978 4 431 55072 3 (eBook) DOI 10.1007/978 4 431 55072 3 Library of Congress Control Number: 2016930030 Springer Japan 2016 This work is subject to copyright. All rights are reserved by the Publisher, whether the whole or part of the material is concerned, speci cally the rights of translation, reprinting, reuse of illustrations, recitation, broadcasting, reproduction on micro lms or in any other physical way, and transmission or information storage and retrieval, electronic adaptation, computer software, or by similar or dissimilar methodology now known or hereafter developed. The use of general descriptive names, registered names, trademarks, service marks, etc. in this publication does not imply, even in the absence of a speci c statement, that such names are exempt from the relevant protective laws and regulations and therefore free for general use. The publisher, the authors and the editors are safe to assume that the advice and information in this book are believed to be true and accurate at the date of publication. Neither the publisher nor the authors or the editors give a warranty, express or implied, with respect to the material contained herein or for any errors or omissions that may have been made. Printed on acid free paper This Springer imprint is published by SpringerNature The registered company is Springer Japan KK. Original Japanese edition published by The Japanese Society for Non Destructive Inspection. Acoustic Emission Testing I Copyright The Japanese Society for Non Destructive Inspection 2006

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Preface Acoustic emission (AE) measurement is a technique for detecting an elastic wave that is generated by the occurrence of microscale defects. Phenomena resulting from microscale defects can thus be readily detected by AE. Recently, the acciden tal failure of various types of structures, resulting in disasters and injury to people in many cases, has been reported as posing a threat to human safety. In most cases, the durability and the load bearing capacity of facilities or structures are carefully ensured against microscale defects (structural aw and cracks). However, in some recent accidents, it has been found that microscale defects can lead to dangerous conditions of structures. Therefore, the establishment of structural diagnosis is in urgent demand. In this respect, AE techniques are known to be promising for detecting microscale defects and the analysis of fracture phenomena. Traditionally, the usefulness of such techniques for predicting rockfalls has been known in mines worldwide. The technique received great attention when it was applied to a pressure test of a rocket motor case (rocket body) of a Polaris missile in the United States. Later, AE testing was standardized as a nondestructive inspection technique for detecting defects in pressure vessels and tanks. This became the motivation for current AE testing. In recent years, applications of AE measurements have been extended from the elds of metal and mechanical engineering to those of civil and chemical engineer ing, resulting in the establishment of practical inspection in many elds. Thus the education of non destructive testing (NDT) technicians in AE has become an important issue. This book was originally prepared for NDT technicians who need to learn practical acoustic emission testing based on level 1 of ISO 9712 (Non destructive testing Quali cation and Certi cation of personnel) by the research and technical committee on AE of the JSNDI (The Japanese Society for Non Destructive Inspec tion). The book was also selected as an essential reference of ISO/DIS 18436 6 (Condition monitoring and diagnostics of machines Requirements for training and certi cation of personnel, Part 6: Acoustic Emission). v

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The editors (see below) and authors of the book are key members of the research and technical committee on AE of the JSNDI. This 30 year old committee has consecutively held the International AE symposium (IAES) every 2 years. Against this background the roles of NDT technicians the principles of AE measurement are explained clearly followed by signal processing, algorithms for source location, measurement devices, applicability of testing methods, and mea surement cases. The authors hope that this book will play a key role inAE education and study in all elds of engineering. Editorial Board Chair Yoshihiro Mizutani, Tokyo Institute of Technology Members Manabu Enoki, The University of Tokyo Hidehiro Inaba, Fuji Ceramics Corporation Hideyuki Nakamura, IHI Inspection and Instrumentation Co., Ltd. The late Masaaki Nakano, Chiyoda Corporation Mitsuhiro Shigeishi, Kumamoto University Tomoki Shiotani, Kyoto University Shin ichi Takeda, Japan Aerospace Exploration Agency Shigenori Yuyama, Nippon Physical Acoustics, Ltd. viPreface

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