Download or read book Construction Calibration and Application of a Split Hopkinson Pressure Bar written by Guojing Li and published by . This book was released on 2003 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Set up of a Split Hopkinson Pressure Bar Calibration and Wave Dispersion Correction written by Àlex Jiménez Garcia and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The mechanical properties of materials change depending upon the strain rate that they are subject to. Robust models that capture the materials response at different strain rates are important. High strain rates from 100s‐1 to 10000s‐1 are undergone in impact applications. The most widely used method to characterise materials at high strain rates is the Split Hopkinson Pressure Bar (SHPB). This project deals with the set‐up and calibration of a Split Hopkinson Pressure Bar for the dynamic testing of metallic materials at high strain rates. The features of the equipment needed are discussed, as well as the instrumentation and the connections between the different components. A calibration routine is also presented in this text. A finite element analysis of a SHPB calibration test has been performed with LS‐DYNA. The model consists of two bars put together and does not include a specimen. The time dependent strain and stress pulses obtained are very well correlated to the theory. The results from a calibration test in the laboratory at Cranfield University are also presented. It is observed that the level of accuracy of the finite element model is better than that of the experimental calibration test. A complete analysis of a SHPB with a metallic specimen is also performed with finite elements in LS‐DYNA. The results achieved are extremely close to those predicted by some hand calculations. The creation and application of a routine with Matlab that corrects the dispersion effect in the model is a key point to increase the accuracy of the results. The dispersion correction routine consists of a technique that enables to filter out the high frequency components of the sampled signal; therefore, part of the noise is removed. This is performed after the time domain data is converted into the frequency domain, after using the Fast Fourier Transform. This routine has also been applied to the experimental results obtained through the calibration test.

Download or read book Split Hopkinson Kolsky Bar written by Weinong W. Chen and published by Springer Science & Business Media. This book was released on 2010-11-11 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors systematically describe the general principles of Kolsky bars, or split Hopkinson bars, which are widely used for obtaining dynamic material properties. Modifications are introduced for obtaining reliable data. Specific experiment design guidelines are provided to subject the specimen to desired testing conditions. Detailed Kolsky-bar examples are given for different classes of materials (brittle, ductile, soft, etc) and for different loading conditions (tension, torsion, triaxial, high/low temperatures, intermediate strain rate, etc). The Kolsky bars used for dynamic structural characterization are briefly introduced. A collection of dynamic properties of various materials under various testing conditions is included which may serve as a reference database. This book assists both beginners and experienced professionals in characterizing high-rate material response with high quality and consistency. Readers who may benefit from this work include university students, instructors, R & D professionals, and scholars/engineers in solid mechanics, aerospace, civil and mechanical engineering, as well as materials science and engineering.

Download or read book Development of a Wireless Instrumented Projectile for Impact Testing Based on Elastic Wave Reduction written by Guojing Li and published by . This book was released on 2008 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Recent Advances in Applied Mechanics written by Tezeswi Tadepalli and published by Springer Nature. This book was released on 2022-04-04 with total page 743 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book comprises the proceedings of the Virtual Seminar on Applied Mechanics 2021 organized by the Indian Society for Applied Mechanics. The contents of this volume focus on solid mechanics, fluid mechanics, biomechanics/biomedical engineering, materials science and design engineering. The authors are experienced practitioners and the chapters encompass up-to-date research in the field of applied mechanics. This book will appeal to researchers and scholars across the broad spectrum of engineering involving the application of mechanics in civil, mechanical, aerospace, automobile, bio-medical, material science, and more.

Download or read book An Analysis of the Split Hopkinson Pressure Bar written by James Leland Rand and published by . This book was released on 1967 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of the paper is to analyze in detail many of the assumptions and techniques often employed to obtain stress-strain relations at rates of strain of approximately 1000/sec. The effects of axial wave propagation and interaction detail in short cylindrical specimens on the resulting stress-strain relation were evaluated in detail. The effect of specimen geometry on the 'end effects' associated with friction was demonstrated both theoretically and experimentally.

Download or read book Rock Mechanics for Natural Resources and Infrastructure Development Full Papers written by Sergio A.B. Fontoura and published by CRC Press. This book was released on 2019-09-03 with total page 3791 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rock Mechanics for Natural Resources and Infrastructure Development contains the proceedings of the 14th ISRM International Congress (ISRM 2019, Foz do Iguaçu, Brazil, 13-19 September 2019). Starting in 1966 in Lisbon, Portugal, the International Society for Rock Mechanics and Rock Engineering (ISRM) holds its Congress every four years. At this 14th occasion, the Congress brings together researchers, professors, engineers and students around contemporary themes relevant to rock mechanics and rock engineering. Rock Mechanics for Natural Resources and Infrastructure Development contains 7 Keynote Lectures and 449 papers in ten chapters, covering topics ranging from fundamental research in rock mechanics, laboratory and experimental field studies, and petroleum, mining and civil engineering applications. Also included are the prestigious ISRM Award Lectures, the Leopold Muller Award Lecture by professor Peter K. Kaiser. and the Manuel Rocha Award Lecture by Dr. Quinghua Lei. Rock Mechanics for Natural Resources and Infrastructure Development is a must-read for academics, engineers and students involved in rock mechanics and engineering. Proceedings in Earth and geosciences - Volume 6 The ‘Proceedings in Earth and geosciences’ series contains proceedings of peer-reviewed international conferences dealing in earth and geosciences. The main topics covered by the series include: geotechnical engineering, underground construction, mining, rock mechanics, soil mechanics and hydrogeology.

Download or read book Testing of the Plastic Deformation of Metals written by T. W. Clyne and published by Cambridge University Press. This book was released on 2021-06-10 with total page 297 pages. Available in PDF, EPUB and Kindle. Book excerpt: Discover a novel approach to the subject, providing detailed information about established and innovative mechanical testing procedures.

Download or read book Numerical Split Hopkinson Pressure Bar NSHPB Test and Its Applications in the Assessment and Improvement of SHPB Test Results written by Hui Meng and published by . This book was released on 2002 with total page 251 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Virtual Fields Method written by Fabrice Pierron and published by Springer Science & Business Media. This book was released on 2012-03-21 with total page 531 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Virtual Fields Method: Extracting Constitutive Mechanical Parameters from Full-field Deformation Measurements is the first and only one on the Virtual Fields Method, a recent technique to identify materials mechanical properties from full-field measurements. It contains an extensive theoretical description of the method as well as numerous examples of application to a wide range of materials (composites, metals, welds, biomaterials etc.) and situations(static, vibration, high strain rate etc.). Finally, it contains a detailed training section with examples of progressive difficulty to lead the reader to program the VFM. This is accompanied with a set of commented Matlab programs as well as with a GUI Matlab based software for more general situations.

Download or read book A Split Hopkinson Pressure Bar Apparatus for High Strain Rate Testing of Interpenetrating Phase Composites IPC written by Chandru Periasamy and published by . This book was released on 2010 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Evaluation of Methodologies Applied to the Split Hopkinson Pressure Bar written by Michael H. Larson and published by . This book was released on 2003 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Constitutive Model Calibration at High Strain Rate Using Hopkinson Bar written by Mohamad Fardmoshiri and published by . This book was released on 2016-07-01 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Kolsky Hopkinson Bar Machine written by Ramzi Othman and published by Springer. This book was released on 2018-04-20 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this book, leading scientists share their vision on the Kolsky-Hopkinson bar technique, which is a well-established experimental technique widely used to characterize materials and structures under dynamic, impact and explosion loads. Indeed, the Kolsky-Hopkinson bar machine is not a simple experimental device. It is rather a philosophical approach to solve the problem of measuring impact events. The split Hopkinson pressure bar conventional device is mainly limited to test homogeneous ductile non-soft materials under uni-axial compression. Extending the use of this device to more versatile applications faces several challenges such as controlling the stress state within the specimen and mastering the measurement of forces and velocities at the specimen-bar interfaces and then the material properties. Thus, the topics discussed in this book mainly focused on the loading and processing parts.

Download or read book Google Earth Engine Applications written by Lalit Kumar and published by MDPI. This book was released on 2019-04-23 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt: In a rapidly changing world, there is an ever-increasing need to monitor the Earth’s resources and manage it sustainably for future generations. Earth observation from satellites is critical to provide information required for informed and timely decision making in this regard. Satellite-based earth observation has advanced rapidly over the last 50 years, and there is a plethora of satellite sensors imaging the Earth at finer spatial and spectral resolutions as well as high temporal resolutions. The amount of data available for any single location on the Earth is now at the petabyte-scale. An ever-increasing capacity and computing power is needed to handle such large datasets. The Google Earth Engine (GEE) is a cloud-based computing platform that was established by Google to support such data processing. This facility allows for the storage, processing and analysis of spatial data using centralized high-power computing resources, allowing scientists, researchers, hobbyists and anyone else interested in such fields to mine this data and understand the changes occurring on the Earth’s surface. This book presents research that applies the Google Earth Engine in mining, storing, retrieving and processing spatial data for a variety of applications that include vegetation monitoring, cropland mapping, ecosystem assessment, and gross primary productivity, among others. Datasets used range from coarse spatial resolution data, such as MODIS, to medium resolution datasets (Worldview -2), and the studies cover the entire globe at varying spatial and temporal scales.

Download or read book Handbook of Damage Mechanics written by George Z. Voyiadjis and published by Springer. This book was released on 2014-10-14 with total page 1579 pages. Available in PDF, EPUB and Kindle. Book excerpt: This authoritative reference provides comprehensive coverage of the topics of damage and healing mechanics. Computational modeling of constitutive equations is provided as well as solved examples in engineering applications. A wide range of materials that engineers may encounter are covered, including metals, composites, ceramics, polymers, biomaterials, and nanomaterials. The internationally recognized team of contributors employ a consistent and systematic approach, offering readers a user-friendly reference that is ideal for frequent consultation. Handbook of Damage Mechanics: Nano to Macro Scale for Materials and Structures is ideal for graduate students and faculty, researchers, and professionals in the fields of Mechanical Engineering, Civil Engineering, Aerospace Engineering, Materials Science, and Engineering Mechanics.

Download or read book Compressive Strength of Concrete written by Pavel Krivenko and published by BoD – Books on Demand. This book was released on 2020-03-11 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: Concrete made using mineral cements, the raw materials which on earth are practically endless, is known as one of the oldest building materials and during the last decades of the twentieth century has become a dominant building material for general use. At the same time, the requirements of the quality of concrete and its performance properties, in particular compressive strength, durability, economical efficiency, and low negative impact of its manufacture on the environment have not yet been completely met. Bearing these requirements in mind, researchers and engineers worldwide are working on how to satisfy these requirements. This book has been written by researchers and experts in the field and provides the state of the art on recent progress achieved on the properties of concrete, including concrete in which industrial by-products are utilized. The book is dedicated to graduate students, researchers, and practicing engineers in related fields.