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Preshock Desensitization Of Pbx Explosives
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Book Synopsis Preshock Desensitization of PBX Explosives by :
Download or read book Preshock Desensitization of PBX Explosives written by and published by . This book was released on 1993 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: Preshocking delays initiation of PBX-9404 and PBX-9501, relative to unshocked material. In PBX-9404 preshock experiments, a first shock of 2.3 GPa was followed 0.65 [mu]s later by a second shock of 5.6 GPa. In PBX-9501, a preshock of 2.8 GPa and 0.32 us duration was followed by an initiating shock of 6.0 GPA. Both PBX explosives show clear desensitization while the preshock persists. In PBX-9404, initiation of detonation occurs nearly as anticipated for the material, after coalescence of the preshock and main shock into a single wave. Multiple embedded magnetic gauges were used to measure the shock histories. Our data indicates a slightly longer run to detonation than expected, even though a single wave is initiating the material. A slight stress reduction at coalescence, as required by the shock dynamics, may be responsible for the overrun. A reactive waste is clearly evident while the preshock persists. The long run to detonation indicates that this reactive wave is not driving the initiation. A set of four preshock experiments were preformed on PBX-9502, which is unreactive at these pressures, to investigate the shock dynamics of the two waves in the HE.
Book Synopsis Initiation of Preshocked High Explosives PBX-9404, PBX-9502, PBX-9501, Monitored with In-material Magnetic Gauging by :
Download or read book Initiation of Preshocked High Explosives PBX-9404, PBX-9502, PBX-9501, Monitored with In-material Magnetic Gauging written by and published by . This book was released on 1993 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: Desensitization of explosives by preshocking is being studied using the well-supported plane shock waves generated by a gas gun. Evolution of the waves in the explosive is monitored using in-material multiple magnetic gauges to measure particle velocity in the lagrangian frame, over ≈ 3[mu]s of run. PBX-9404, PBX-9502 have been studied, at pressures up to 10.5 GPa. A substantial extension of the run to detonation is observed in PBX-9404, with the run beginning approximately at the end of the preshocked region. A reactive wave is observed while the preshock persists in both PBX-9404 and PBX-9501, but evidently does not contribute to the detonation wave or shorten the run to detonation. PBX-9502 is inert at pressures accessible with the gas gun, but serves to clarify the progress of multiple shocks over the off-Hugoniot EOS surface and the shock dynamics of wave coalescence.
Book Synopsis Numerical Modeling of Explosives and Propellants, Second Edition by : Charles L. Mader
Download or read book Numerical Modeling of Explosives and Propellants, Second Edition written by Charles L. Mader and published by CRC Press. This book was released on 1997-08-29 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: Charles Mader, a leading scientist who conducted theoretical research at Los Alamos National Laboratory for more than 30 years, sets a new standard with this reference on numerical modeling of explosives and propellants. This book updates and expands the information presented in the author's landmark work, Numerical Modeling of Detonations, published in 1979 and still in use today. Numerical Modeling of Explosives and Propellants incorporates the considerable changes the personal computer has brought to numerical modeling since the first book was published, and includes new three-dimensional modeling techniques and new information on propellant performance and vulnerability. Both an introduction to the physics and chemistry of explosives and propellants and a guide to numerical modeling of detonation and reactive fluid dynamics, Numerical Modeling of Explosives and Propellants offers scientists and engineers a complete picture of the current state of explosive and propellant technology and numerical modeling. The book is richly illustrated with figures that support the concepts, and filled with tables for quick access to precise data. The accompanying CD-ROM contains computer codes that are the national standard by which modeling is evaluated. Dynamic material properties data files and animation files are also included. There is no other book available today that offers this vital information.
Book Synopsis Numerical Modeling of Explosives and Propellants by : Charles L. Mader
Download or read book Numerical Modeling of Explosives and Propellants written by Charles L. Mader and published by CRC Press. This book was released on 2007-10-18 with total page 539 pages. Available in PDF, EPUB and Kindle. Book excerpt: Major advances, both in modeling methods and in the computing power required to make those methods viable, have led to major breakthroughs in our ability to model the performance and vulnerability of explosives and propellants. In addition, the development of proton radiography during the last decade has provided researchers with a major new experimental tool for studying explosive and shock wave physics. Problems that were once considered intractable – such as the generation of water cavities, jets, and stems by explosives and projectiles – have now been solved. Numerical Modeling of Explosives and Propellants, Third Edition provides a complete overview of this rapidly emerging field, covering basic reactive fluid dynamics as well as the latest and most complex methods and findings. It also describes and evaluates Russian contributions to the experimental explosive physics database, which only recently have become available. This book comes with downloadable resources that contain— · FORTRAN and executable computer codes that operate under Microsoft® Windows Vista operating system and the OS X operating system for Apple computers · Windows Vista and MAC compatible movies and PowerPoint presentations for each chapter · Explosive and shock wave databases generated at the Los Alamos National Laboratory and the Russian Federal Nuclear Centers Charles Mader’s three-pronged approach – through text, computer programs, and animations – imparts a thorough understanding of new computational methods and experimental measuring techniques, while also providing the tools to put these methods to effective use.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1993 with total page 922 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis High-pressure Science and Technology, 1993 by : S. C. Schmidt
Download or read book High-pressure Science and Technology, 1993 written by S. C. Schmidt and published by . This book was released on 1994 with total page 1030 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Shock Desensitization of PBX-9404 and Composition B-3 by :
Download or read book Shock Desensitization of PBX-9404 and Composition B-3 written by and published by . This book was released on 1985 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: PBX-9404 and Composition B-3 were desensitized by subjecting them to shocks in the pressure range 10 to 24 kbar. Results show that the collapse of voids, and thus the activation of hot spots by shock waves, takes time and may require more than 5 .mu.s. This time is, in a way, a counterpart of the induction time for shock initiation of a homogeneous explosive. Gittings' data are adduced to extend the results to 100 kbar and to show that at high pressures desensitization occurs in a very brief time window. When the voids have been collapsed, the relatively homogeneous explosive is resistant to detonation through an Arrhenius type of reaction because of the lower shock temperature resulting from double shocking. This conclusion is supported by experiments on single crystals of HMX and by shock temperature calculations. The time required for desensitization of PBX-9404 is related to pressure by the expression p/sup 2.2/tau = 1150. 21 references, 5 figures, 5 tables.
Download or read book Ballistics 2011 written by Ernest Baker and published by DEStech Publications, Inc. This book was released on 2011-09 with total page 2230 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes papers that were first presented at a September 2011 conference organized by the National Defense Industrial Association and the International Ballistics Society. This title includes a CD-ROM that displays figures and illustrations in articles in full color along with a title screen and main menu screen.
Book Synopsis Government Reports Announcements & Index by :
Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1994 with total page 730 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government Reports Annual Index by :
Download or read book Government Reports Annual Index written by and published by . This book was released on 1995 with total page 1096 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sections 1-2. Keyword Index.--Section 3. Personal author index.--Section 4. Corporate author index.-- Section 5. Contract/grant number index, NTIS order/report number index 1-E.--Section 6. NTIS order/report number index F-Z.
Book Synopsis 1st European Conference on Cineradiography with Photons Or Particles by : Jacques Marilleau
Download or read book 1st European Conference on Cineradiography with Photons Or Particles written by Jacques Marilleau and published by American Society of Civil Engineers. This book was released on 1983 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Organic Energetic Compounds by : Paul L. Marinkas
Download or read book Organic Energetic Compounds written by Paul L. Marinkas and published by . This book was released on 1996 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume collects the progress in the last decade or two in selected topics within the field of organic energetic compounds. New areas of energetic materials science have achieved prominence, such as molecular orbital calculations, toxicology, biodegradation, and counter-terrorism. The topics selected for discussion in this volume embody the more exciting work in the field which is taking place in laboratories around the world.
Book Synopsis Shock Compression of Condensed Matter--1999 by : Michael D. Furnish
Download or read book Shock Compression of Condensed Matter--1999 written by Michael D. Furnish and published by . This book was released on 2000 with total page 732 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fundamentals of Shaped Charges by : William P. Walters
Download or read book Fundamentals of Shaped Charges written by William P. Walters and published by Wiley-Interscience. This book was released on 1989 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt: An introduction to the art and science of developing shaped charges. Presents the history of shaped charges, the principles governing their design, and a variety of example applications. Includes discussion of Gurney and Taylor methods, jet formation, the visco-plastic model, jet penetration, fabrication, computational aspects, and how to design shaped charges for different applications. Annotation copyrighted by Book News, Inc., Portland, OR
Book Synopsis Structure and Properties of Energetic Materials: Volume 296 by : Donald H. Liebenberg
Download or read book Structure and Properties of Energetic Materials: Volume 296 written by Donald H. Liebenberg and published by . This book was released on 1993-05-28 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: The MRS Symposium Proceeding series is an internationally recognised reference suitable for researchers and practitioners.
Book Synopsis Detonics of High Explosives by : Carl Hugo Johansson
Download or read book Detonics of High Explosives written by Carl Hugo Johansson and published by . This book was released on 1970 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Initiation and Growth of Explosion in Liquids and Solids by : Frank Philip Bowden
Download or read book Initiation and Growth of Explosion in Liquids and Solids written by Frank Philip Bowden and published by CUP Archive. This book was released on 1985-10-24 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the research of Bowden, Yoffe and their collaborators on explosive initiation. What Bowden and Yoffe showed was that explosives are ignited almost invariably by thermal processes and though other processes have been identified their work still holds.
