Residual Strength and Fatigue Lifetime of ... - Solid Mechanics
Residual Strength and Fatigue Lifetime of ... - Solid Mechanics Residual Strength and Fatigue Lifetime of ... - Solid Mechanics
Published in Denmark by Technical University of Denmark Copyright © Ramin Moslemian 2011 All rights reserved Section of Coastal, Maritime and Structural Engineering Department of Mechanical Engineering Technical University of Denmark Nils Koppels Alle, Building 403, DK-2800 Kgs. Lyngby, Denmark Phone +45 4525 1360, Telefax +45 4588 4325 Email: info.skk@mek.dtu.dk WWW: http://www.mek.dtu.dk Publication Reference Data Moslemian, R. Residual Strength and Fatigue Lifetime of Debond Damaged Sandwich Structures PhD Thesis Technical University of Denmark, Section of Coastal, Maritime and Structural Engineering September 2011 ISBN 978-87-90416-73-7 Keywords: Fatigue, Fracture, Sandwich Structures, Composite Materials, Debonding
Preface This thesis is submitted as a partial fulfillment of the requirements for the Danish Ph.D. degree. The work was conducted at the Section of Coastal, Maritime and Structural Engineering, Department of Mechanical Engineering, Technical University of Denmark, during the period from January 2008 to September 2011. The project was supervised by Associate Professor Christian Berggreen, Professor Leif A. Carlsson, Senior Scientist Bent F. Sørensen and Senior Scientist Kim Branner. My sincere thanks go to Associated Professor Christian Berggreen for his supervision during the entire project, encouragement, and many illuminating discussions about different topics from practical matters regarding the experiments to theoretical discussions about fracture mechanics. His support and guidance is highly appreciated. Many thanks to Professor Leif A. Carlsson from Florida Atlantic University, for his insightful comments and constructive criticism. Special thanks go to Assistant Professor Amilcar Quispitupa at the Department of Mechanical Engineering, DTU for interesting discussions and priceless helps during the experiments. I am further grateful to Professor Jørgen Juncher Jensen, head of the Section of Coastal, Maritime and Structural Engineering, Department of Mechanical Engineering, DTU for facilitating a friendly trouble-free atmosphere at the working environment and to other colleagues at the Department as well. Part of this thesis was conducted abroad during seven months at the Department of Mechanical Engineering, University of Delaware, USA under the supervision of Professor Anette Karlsson. I would like to thank Anette for all her guidance, and for introducing the cycle jump technique to me which is the main foundation under the second part of this thesis. Very special thanks go to Professor Brian Hayman from Department of Mathematics, University of Oslo, Norway (earlier at Det Norske Veritas) for providing test specimens and precious discussions. Thanks to PhD candidate Marcello Manca and MSc student Sota Sugimoto for helping me with conducting fatigue experiments. Finally my very special thanks go to Leila for being there for me and her support during the last years of the study. i
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- Page 14 and 15: Contents Preface Executive Summary
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Published in Denmark by<br />
Technical University <strong>of</strong> Denmark<br />
Copyright © Ramin Moslemian 2011<br />
All rights reserved<br />
Section <strong>of</strong> Coastal, Maritime <strong>and</strong> Structural Engineering<br />
Department <strong>of</strong> Mechanical Engineering<br />
Technical University <strong>of</strong> Denmark<br />
Nils Koppels Alle, Building 403, DK-2800 Kgs. Lyngby, Denmark<br />
Phone +45 4525 1360, Telefax +45 4588 4325<br />
Email: info.skk@mek.dtu.dk<br />
WWW: http://www.mek.dtu.dk<br />
Publication Reference Data<br />
Moslemian, R.<br />
<strong>Residual</strong> <strong>Strength</strong> <strong>and</strong> <strong>Fatigue</strong> <strong>Lifetime</strong> <strong>of</strong> Debond Damaged<br />
S<strong>and</strong>wich Structures<br />
PhD Thesis<br />
Technical University <strong>of</strong> Denmark, Section <strong>of</strong> Coastal, Maritime<br />
<strong>and</strong> Structural Engineering<br />
September 2011<br />
ISBN 978-87-90416-73-7<br />
Keywords: <strong>Fatigue</strong>, Fracture, S<strong>and</strong>wich Structures, Composite<br />
Materials, Debonding
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