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Author: Sujitkumar Dongare Publisher: ISBN: Category : Manufacturing processes Languages : en Pages : 86
Book Description
"The study of mechanical properties of metals provides a basis to decide on the capability of a particular metal for a task and also to make predictions about its life. The concepts of stress, strain and strength of materials are employed in practically every engineering discipline. Mechanical properties such as stiffness, yield strength, tensile strength, ductility, toughness, impact resistance, creep resistance, fatigue resistance and others, influence the design, fabrication and service life of equipment. Therefore, more than one property is considered for the material selection process for an application. For complete understanding of any material and its feasibility for a particular application, inter-related mechanical properties have to be measured. Unfortunately, these properties cannot be measured in any single test. However, the tensile test can be used to measure a number of the most commonly used mechanical properties. Extensive research has already been performed in this area. Standards have been developed and established regarding the size of test specimens, testing procedures and process parameters. This thesis discusses the development of a testing procedure for non-standard tensile tests for evaluation of material properties. Miniature test specimens similar to the standard ASTM E8 were designed and used for testing. The tests were mainly conducted on the baseline material for aerospace industry i.e. Ti-6Al-4V"--Abstract, leaf iv.
Author: Sujitkumar Dongare Publisher: ISBN: Category : Manufacturing processes Languages : en Pages : 86
Book Description
"The study of mechanical properties of metals provides a basis to decide on the capability of a particular metal for a task and also to make predictions about its life. The concepts of stress, strain and strength of materials are employed in practically every engineering discipline. Mechanical properties such as stiffness, yield strength, tensile strength, ductility, toughness, impact resistance, creep resistance, fatigue resistance and others, influence the design, fabrication and service life of equipment. Therefore, more than one property is considered for the material selection process for an application. For complete understanding of any material and its feasibility for a particular application, inter-related mechanical properties have to be measured. Unfortunately, these properties cannot be measured in any single test. However, the tensile test can be used to measure a number of the most commonly used mechanical properties. Extensive research has already been performed in this area. Standards have been developed and established regarding the size of test specimens, testing procedures and process parameters. This thesis discusses the development of a testing procedure for non-standard tensile tests for evaluation of material properties. Miniature test specimens similar to the standard ASTM E8 were designed and used for testing. The tests were mainly conducted on the baseline material for aerospace industry i.e. Ti-6Al-4V"--Abstract, leaf iv.
Author: The Minerals, Metals & Materials Society (TMS) Publisher: John Wiley & Sons ISBN: 1119093481 Category : Technology & Engineering Languages : en Pages : 1584
Book Description
The TMS 2015 Annual Meeting Supplemental Proceedings is a collection of papers from the TMS 2015 Annual Meeting & Exhibition, held March 15-19 in Orlando, Florida, USA. The papers in this volume represent 33 symposia from the meeting. This volume, along with the other proceedings volumes published for the meeting, and archival journals, such as Metallurgical and Materials Transactions and Journal of Electronic Materials, represents the available written record of the 73 symposia held at TMS2015. This proceedings volume contains both edited and unedited papers; the unedited papers have not necessarily been reviewed by the symposium organizers and are presented "as is." The opinions and statements expressed within the papers are those of the individual authors only, and no confirmations or endorsements are intended or implied.
Author: Ashish Kolhatkar Publisher: ISBN: Category : Tensile architecture Languages : en Pages : 15
Book Description
In this work, a miniature tensile specimen with nominal dimensions of 3.0-mm gage length (GL), 1.5-mm gage width, and 0.5-mm thickness that was carved out of a 10.0-mm-diameter disk has been developed and standardized using analytical and experimental methods. The geometry of the miniature specimen, called ultra sub-size (USS), was optimized using finite element analysis to determine the fillet radius and appropriate geometrical tolerances for specimen dimensions like gage width and thickness. The methods of specimen preparation, gripping, and tensile testing with the use of digital image correlation for strain measurement were standardized. The 0.2 % offset yield strength, ultimate tensile strength, and uniform strain of different materials obtained using this specimen geometry were analyzed and compared with the results of ASTM sub-size (GL: 25mm) and further sub-size geometry (GL: 12.5mm) The results of this study show that USS tensile specimen geometry developed in this work can be reliably employed for mechanical property evaluation in situations where tensile testing using standard-size specimens is practically not possible.
Author: Y. Higo Publisher: ISBN: Category : Annealing of metals Languages : en Pages : 11
Book Description
Attempting to miniaturize mechanical specimens is certainly not new. In fusion reactor material development, limited space in the test reactor and the dose to personnel in the post-irradiation state dictates that the specimen size be reduced without reducing the accuracy of the test. A four-point bend test on TEM disk specimens (0.3 mm in thickness and 3 mm in diameter) was carried out to evaluate tension test parameters. The bending load-deflection records obtained from the miniature specimen were interpreted with a large-scale deflection bending analysis. The tensile yield strength and the ultimate tensile strength of both a 316L-type stainless steel and a 7075 T6 aluminum (Al) alloy obtained from the miniature four-point bend test agreed well with standard tension test results. A gripping system for tension testing of the TEM-size specimens was also developed. The ultimate tensile strength results of two stainless steels agreed well with those obtained from standard-size specimens; however, the tensile yield strength could not be determined.
Author: R. Procházka Publisher: ISBN: Category : Dynamic testing Languages : en Pages : 19
Book Description
The evaluation of the actual mechanical properties of in-service structures after a period of operation or the determination of local properties for detailed finite element method (FEM) simulation requires relevant material data obtained with high accuracy from a small volume of the experimental material. Therefore, non-destructive or semi-destructive techniques using small samples are being developed. The use of small-scale samples also enables the evaluation of material properties in various locations of tested components--for example, the mechanical properties of isolated regions of welds. One of the widely used methods in miniature specimen testing is the small punch test (SPT). The SPT is usually based on conversion of the obtained results into conventional parameters such as tensile properties, creep, fatigue, notch toughness, transition temperature, or fracture toughness parameters, but it requires known correlation parameters determined for the specific material. It was considered whether there is really a need to convert values from an SPT if there is not a chance to perform, for example, tensile tests directly on the same volume of experimental material as used in the SPT. Preliminary FEM analysis was performed with subsequent experimental verification of the possibility of testing small tensile samples with the following dimensions: active part length, 3 mm; width, 1.5 mm; and thickness, 0.5 mm. On the basis of promising preliminary results, testing fixtures for micro-tensile samples were developed together with a testing procedure. The performance of the micro-tensile test method relative to standard tensile tests is shown here together with its application to weld characterization.
Author: Pranav H. Darji Publisher: BoD – Books on Demand ISBN: 1789231582 Category : Science Languages : en Pages : 288
Book Description
This book contains two sections: Chapters 1-7 deal with contact mechanics, and Chapters 8-13 deal with fracture mechanics. The different contributions of this book will cover the various advanced topics of research. It provides some needed background with respect to contact mechanics, fracture mechanics and the use of finite element methods in both. All the covered chapters of this book are of a theoretical and applied nature, suitable for the researchers of engineering, physics, applied mathematics and mechanics with an interest in computer simulation of contact and fracture problems.
Author: V. Karthik Publisher: CRC Press ISBN: 1315354853 Category : Science Languages : en Pages : 123
Book Description
This book is a comprehensive overview of methods of characterizing the mechanical properties of engineering materials using specimen sizes in the micro-scale regime (0.3-5.0 mm). A range of issues associated with miniature specimen testing like correlation methodologies for data transferability between different specimen sizes, use of numerical simulation/analysis for data inversion, application to actual structures using scooped out samples or by in-situ testing, and more importantly developing a common code of practice are discussed and presented in a concise manner.
Author: Pranjal Nautiyal Publisher: Springer Nature ISBN: 303043320X Category : Technology & Engineering Languages : en Pages : 269
Book Description
This is the first comprehensive book to address in-situ mechanics approach, which relies on real-time imaging during mechanical measurements of materials. The book presents tools, techniques and methods to interrogate the deformation characteristics of a wide array of material classes, and how the mechanics and the material microstructures are correlated. In-situ approach provides unprecedented ability to decipher the mechanical behavior of materials from atomic length scales all the way up to bulk-scale, which is not possible using conventional means. The book also addresses how to capture the deformation behavior of materials under different stress-states and extreme environments. The book will be useful to the new generation of students, scientists and researchers working on the frontiers of material design and innovation as they aim to develop new materials with predictable mechanical properties and technological applications. This book can also serve as a textbook aimed at upper-level undergraduates and graduate-level students who are beginning to delve into the mechanics of materials. Catering to a generation of students that appreciates videos as a didactic tool, this book contains numerous videos to supplement problems, solutions, and case studies.
Author: Sujitkumar Dongare
Author: Sujitkumar Dongare
Author: The Minerals, Metals & Materials Society (TMS)
Author: Ashish Kolhatkar
Author: Y. Higo
Author: R. Procházka
Author: Pranav H. Darji
Author: Vasisht Venkatesh
Author: Joseph R. Davis
Author: V. Karthik
Author: Pranjal Nautiyal