Energy Localization and Heat Generation in Composite Energetic Systems Under High-Frequency Mechanical Excitation Jesus O
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Purdue University Purdue e-Pubs Open Access Dissertations Theses and Dissertations 12-2016 Energy localization and heat generation in composite energetic systems under high-frequency mechanical excitation Jesus O. Mares Purdue University Follow this and additional works at: https://docs.lib.purdue.edu/open_access_dissertations Part of the Acoustics, Dynamics, and Controls Commons, and the Materials Science and Engineering Commons Recommended Citation Mares, Jesus O., "Energy localization and heat generation in composite energetic systems under high-frequency mechanical excitation" (2016). Open Access Dissertations. 971. https://docs.lib.purdue.edu/open_access_dissertations/971 This document has been made available through Purdue e-Pubs, a service of the Purdue University Libraries. Please contact [email protected] for additional information. ENERGY LOCALIZATION AND HEAT GENERATION IN COMPOSITE ENERGETIC SYSTEMS UNDER HIGH-FREQUENCY MECHANICAL EXCITATION A Dissertation Submitted to the Faculty of Purdue University by Jesus O. Mares, Jr. In Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy December 2016 Purdue University West Lafayette, Indiana Graduate School Form 30 Updated PURDUE UNIVERSITY GRADUATE SCHOOL Thesis/Dissertation Acceptance This is to certify that the thesis/dissertation prepared By Jesus O. Mares, Jr. Entitled Energy Localization and Heat Generation in Composite Energetic Systems under High-Frequency Mechanical Excitation For the degree of Doctor of Philosophy Is approved by the final examining committee: Steven Son Jeffrey F. Rhoads Chair John S. Bolton Lori J. Groven To the best of my knowledge and as understood by the student in the Thesis/Dissertation Agreement, Publication Delay, and Certification Disclaimer (Graduate School Form 32), this thesis/dissertation adheres to the provisions of Purdue University’s “Policy of Integrity in Research” and the use of copyright material. Approved by Major Professor(s): Steven Son Approved by: Weinong Wayne Chen 11/2/2016 Head of the Departmental Graduate Program Date ii To the friends and family, who have supported me through it all. iii ACKNOWLEDGMENTS I am grateful to the many people who have supported this work and who have graciously devoted many hours to support me throughout this effort. Firstly, I would like thank my advisor Professor Steven Son for his constant advice and support throughout the many years. I would also like to thank Professors Lori Groven, Jeffrey Rhoads, and Emre Gunduz for their guidance and invaluable expertise that made this work possible. Additionally, I would also like to thank Professors Stuart Bolton, Weinong Chen, Marcial Gonzalez, and Douglas Adams for their assistance in many areas of this work. Throughout my studies, I have heavily relied on the help of many of my fellow students who have become good friends. The majority of this work has been conducted in very much a cooperative effort with many colleagues, specifically: Jacob Miller, Daniel Woods, and Caroline Baker. I have attempted to list their individual contributions throughout the introductions of each major chapter; however, their value to this work extends beyond those contributions listed. Additionally, my time at Purdue has been made significantly better through my friendships with Brandon Terry, Ross Nellums, Mario Rubio, Matthew Massaro, and Matthew Beason to name just a few. Specifically, I would like to thank David Kittell, with whom countless hours were spent in always thoughtful discussion. Finally, I would like to thank my family who has always supported my endeavors throughout my life. I believe that this achievement is one that reflects the efforts of my entire family. I can only hope that this work should make them proud. This work was funded by the Office of Naval Research Basic Research Challenge on “Chemical Decomposition in High Energy Density Materials Induced by Coupled Acoustic Electromagnetic Energy Insult” under Grant No. N00014-11-1-0466 and in part under the Multidisciplinary University Research Initiative on “Sound and Electromagnetic Interacting Waves” through Grant No. N00014-10-1-0958. A portion of the work was also funded through the U.S. Air Force Office of Scientific Research through Award No. iv FA9550-15-1-0102. The author was also supported through the National Science Foundation Graduate Research Fellowship Program through Grant No. DGE-1333468. v TABLE OF CONTENTS Page 34TLIST OF TABLES34T ............................................................................................................. ix 34TLIST OF FIGURES 34T ............................................................................................................ x ABSTRACT34T 34T ................................................................................................................... xviii CHAPTER34T 1. INTRODUCTION34T ...................................................................................... 1 1.134T 34T Motivation34T 34T ............................................................................................................... 1 1.234T 34T Scope34T 34T ....................................................................................................................... 2 1.334T 34T Organization34T 34T ............................................................................................................ 3 CHAPTER34T 2. BACKGROUND34T ........................................................................................ 5 2.134T 34T Mechanical34T Wave Propagation Phenomena34T............................................................ 5 2.1.134T 34T Wave34T Propagation in Gases 34T ........................................................................... 5 2.1.234T 34T 34TLongitudinal and Shear Wave Propagation in Elastic Isotropic Homogeneous Solids 34T ................................................................................................. 10 2.234T 34T Attenuation34T of Mechanical Waves 34T ........................................................................ 15 2.2.134T 34T Acoustic34T Absorption in Gases34T ...................................................................... 16 2.2.234T 34T Acoustic34T Absorption in Solids 34T ..................................................................... 23 2.334T 34T Heat34T Generation Due to High-frequency Mechanical Excitation in Current Applications 34T .................................................................................................................. 35 2.3.134T 34T Ultrasonic34T Welding34T ...................................................................................... 35 2.3.234T 34T Medical34T Applications34T ................................................................................... 37 2.3.334T 34T Non34T -Destructive Testing34T .............................................................................. 38 2.434T 34T High34T and Low-frequency Mechanical Excitation of Energetic Materials34T ............ 39 2.4.134T 34T Early34T Work on the Initiation of Explosives with Ultrasound 34T ...................... 40 2.4.234T 34T Sensitivity34T of Explosives to Low-frequency Vibration 34T ............................... 42 2.4.334T 34T Ultrasound34T in the Processing of Energetic Materials 34T ................................... 45 2.4.434T 34T Recent34T Work on the Initiation of Explosives with Ultrasound 34T .................... 45 2.534T 34T Detection34T of Explosives 34T ........................................................................................ 47 2.5.134T 34T Overview34T of Current Detection Methods 34T ..................................................... 48 vi Page 2.5.234T 34T Trace34T Vapor Detection Techniques34T ............................................................. 50 2.5.334T 34T Potential34T Solutions via High-frequency Mechanical Excitation 34T .................. 51 2.634T 34T 34TInitiation of Explosion 34T .......................................................................................... 53 CHAPTER34T 3. THE THERMAL AND MECHANICAL RESPONSE OF A BULK PLASTIC BONDED EXPLOSIVE UNDER HIGH FREQUENCY CONTACT EXCITATION34T ......................................................................................................... 55 3.134T 34T 34TIntroduction 34T ........................................................................................................... 55 3.234T 34T Experimental34T Methods 34T .......................................................................................... 56 3.2.134T 34T Material34T Characterization and Sample Preparation 34T ..................................... 56 3.2.234T 34T Mechanical34T Excitation and Measurement 34T .................................................... 58 3.2.334T 34T Thermal34T Measurement34T ................................................................................. 59 3.334T 34T Results34T and Discussion 34T ......................................................................................... 61 3.3.134T 34T Mechanical34T Response34T................................................................................... 61 3.3.234T 34T Thermal34T Response34T ........................................................................................ 65 3.3.334T 34T Heat34T Generation Estimation 34T ......................................................................... 68 3.434T 34T Conclusions34T 34T ..........................................................................................................