Practical Acoustic Emission Testing
This book is intended for non-destructive testing (NDT) technicians who want to learn practical acoustic emission testing based on level 1 of ISO 9712 (Non-destructive testing – Qualification and certification of personnel) criteria. The essential aspects
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Practical Acoustic Emission Testing
Practical Acoustic Emission Testing
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The Japanese Society for Non-Destructive Inspection
Practical Acoustic Emission Testing
The Japanese Society for Non-Destructive Inspection Tokyo, Japan
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 ISBN 978-4-431-55071-6 ISBN 978-4-431-55072-3 DOI 10.1007/978-4-431-55072-3
(eBook)
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, specifically the rights of translation, reprinting, reuse of illustrations, recitation, broadcasting, reproduction on microfilms 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 specific 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.
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 accidental 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 flaw 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 ins
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