TB-6_2013.pdf

ASME PTB-6-2013Guidelines for Strain Gaging of Pressure Vessels Subjected to External Pressure Loading in the PVHO-1 StandardCopyright ASME International Provided by IHS under license with ASME Licensee=Purdue University(Access to 410RL from 5967164)/5923082001 Not for Resale,06/29/2013 05:23:42 MDTlue.clasNo reproduction or networking permitted without license from IHS-,-,-PTB-6-2013 GUIDELINES FOR STRAIN GAGING OF PRESSURE VESSELS SUBJECTED TO EXTERNAL PRESSURE LOADING IN THE PVHO-1 STANDARD Lawrence J.Goland Southwest Research Institute Copyright ASME International Provided by IHS under license with ASME Licensee=Purdue University(Access to 410RL from 5967164)/5923082001 Not for Resale,06/29/2013 05:23:42 MDTlue.clasNo reproduction or networking permitted without license from IHS-,-,-PTB-6-2013 Date of Issuance:June 21,2013 This document was supported by ASME Pressure Technology Codes and Standards(PTCS)through the ASME Standards Technology,LLC(ASME ST-LLC).Neither ASME,the author,nor others involved in the preparation or review of this document,nor any of their respective employees,members or persons acting on their behalf,makes any warranty,express or implied,or assumes any legal liability or responsibility for the accuracy,completeness or usefulness of any information,apparatus,product or process disclosed,or represents that its use would not infringe upon privately owned rights.Reference herein to any specific commercial product,process or service by trade name,trademark,manufacturer or otherwise does not necessarily constitute or imply its endorsement,recommendation or favoring by ASME or others involved in the preparation or review of this document,or any agency thereof.The views and opinions of the authors,contributors and reviewers of the document expressed herein do not necessarily reflect those of ASME or others involved in the preparation or review of this document,or any agency thereof.ASME does not“approve,”“rate”,or“endorse”any item,construction,proprietary device or activity.ASME does not take any position with respect to the validity of any patent rights asserted in connection with any items mentioned in this document,and does not undertake to insure anyone utilizing a standard against liability for infringement of any applicable letters patent,nor assume any such liability.Users of a code or standard are expressly advised that determination of the validity of any such patent rights,and the risk of infringement of such rights,is entirely their own responsibility.Participation by federal agency representative(s)or person(s)affiliated with industry is not to be interpreted as government or industry endorsement of this publication.ASME is the registered trademark of The American Society of Mechanical Engineers.No part of this document may be reproduced in any form,in an electronic retrieval system or otherwise,without the prior written permission of the publisher.The American Society of Mechanical Engineers Two Park Avenue,New York,NY 10016-5990 Copyright 2013 by THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS All rights reserved Printed in the U.S.A.Copyright ASME International Provided by IHS under license with ASME Licensee=Purdue University(Access to 410RL from 5967164)/5923082001 Not for Resale,06/29/2013 05:23:42 MDTlue.clasNo reproduction or networking permitted without license from IHS-,-,-PTB-6-2013 iii TABLE OF CONTENTS Foreword.v Abstract.vi Acknowledgements.vii 1 PURPOSES OF STRAIN GAGING PRESSURE HULL.1 1.1 General.1 1.2 Monitoring For Behavior.1 1.3 Monitoring For Stability.2 2 STRAIN GAGE ROSETTE TYPES AND RECOMMENDED USES.3 2.1 General.3 2.2 Use of Uniaxial Strain Gages.4 2.3 Use of Biaxial(Tee)Strain Gage Rosettes.4 2.4 Use of Triaxial Strain Gage Rosettes.5 3 NOMENCLATURE FOR PRESSURE HULLS.6 4 GENERAL GUIDELINES FOR LOCATIONS OF STRAIN GAGES AND ROSETTES.9 5 EXAMPLE OF BASIC STRAIN GAGE LOCATIONS.10 6 EXAMPLE OF COMPLEX STRAIN GAGE LOCATIONS.12 6.1 General.12 6.2 Locations on Ring-Stiffened Cylindrical Hull.17 6.3 Locations on Hemispherical Heads.17 LIST OF FIGURES Figure 2.1 Examples of Uniaxial and Typical Strain Gage Rosettes.3 Figure 3.1 Illustrative Hull Components.6 Figure 3.2 End Bay Region in Typical Ring Stiffened Hull(and Exaggerated Displaced Shape under External Pressure Load).7 Figure 3.3 Out-of-Circularity(OOC)of Cylindrical Pressure Hull.7 Figure 3.4 Out-of-Fairness(OOF)of Cylindrical Pressure Hull.8 Figure 3.5 Out-of-Sphericity(OOS)of Spherical/Hemispherical Pressure Hull.8 Figure 5.1 Basic Strain Gage Location on Pressure Hull.10 Figure 6.1 Complex Strain Gage Locations on Pressure Hull.13 Copyright ASME International Provided by IHS under license with ASME Licensee=Purdue University(Access to 410RL from 5967164)/5923082001 Not for Resale,06/29/2013 05:23:42 MDTlue.clasNo reproduction or networking permitted without license from IHS-,-,-PTB-6-2013 iv Figure 6.2 Complex Strain Gage Locations on Pressure Hull.14 Figure 6.3 Complex Strain Gage Locations on Press