Generation And Analysis Of Fcg Data Using A Single Specimen And Kmax Delta K Testing Matrix

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Generation And Analysis Of Fcg Data Using A Single Specimen And Kmax Delta K Testing Matrix

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Author : Sree Phani Chandar Reddy
language : en
Publisher:
Release Date : 2008

Generation And Analysis Of Fcg Data Using A Single Specimen And Kmax Delta K Testing Matrix written by Sree Phani Chandar Reddy and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with Fracture mechanics categories.

A custom method to generate fatigue crack growth (FCG) data requires testing of multiple specimens at different load ratios. In addition, it includes the application of a load shedding procedure from pre-cracking level to threshold. In this thesis, a novel method of testing has been investigated which utilizes a single specimen and a testing matrix in terms of Kmax and [delta]K values corresponding to predetermined R-ratios for which FCG data, da/dN are recorded. Automatic K-controlled tests on 2324-T39 A1 alloy were conducted using the [delta]K increasing and [delta]K decreasing procedures while Kmax was kept constant. Results show that the increasing [delta]K procedure is more conservative than the [delta]K decreasing procedure. Fatigue crack growth curves in terms of da/dN vs. [delta]K obtained from [delta]K increasing are below the curves obtained from the [delta]K decreasing procedure. These differences are explained by means of load interaction between cyclic plastic zones and their effect on fatigue damage. The [delta]K increasing procedure demonstrated minimal interaction effects and hence it is recommended for efficient FCG generation. The proposed procedure reduces testing time, the overall scatter associated with multiple samples and eliminates possible uncertainty liked to the load shedding procedure and its effects on threshold.

Handbook Of Adhesion Technology

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Author : Lucas F. M. da Silva
language : en
Publisher: Springer
Release Date : 2011-08-10

Handbook Of Adhesion Technology written by Lucas F. M. da Silva and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-08-10 with Technology & Engineering categories.

Adhesives have been used for thousands of years, but until 100 years ago, the vast majority was from natural products such as bones, skins, fish, milk, and plants. Since about 1900, adhesives based on synthetic polymers have been introduced, and today, there are many industrial uses of adhesives and sealants. It is difficult to imagine a product—in the home, in industry, in transportation, or anywhere else for that matter—that does not use adhesives or sealants in some manner. The Handbook of Adhesion Technology is intended to be the definitive reference in the field of adhesion. Essential information is provided for all those concerned with the adhesion phenomenon. Adhesion is a phenomenon of interest in diverse scientific disciplines and of importance in a wide range of technologies. Therefore, this handbook includes the background science (physics, chemistry and materials science), engineering aspects of adhesion and industry specific applications. It is arranged in a user-friendly format with ten main sections: theory of adhesion, surface treatments, adhesive and sealant materials, testing of adhesive properties, joint design, durability, manufacture, quality control, applications and emerging areas. Each section contains about five chapters written by internationally renowned authors who are authorities in their fields. This book is intended to be a reference for people needing a quick, but authoritative, description of topics in the field of adhesion and the practical use of adhesives and sealants. Scientists and engineers of many different backgrounds who need to have an understanding of various aspects of adhesion technology will find it highly valuable. These will include those working in research or design, as well as others involved with marketing services. Graduate students in materials, processes and manufacturing will also want to consult it.

Control And Coordination In Hierarchical Systems

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Author :
language : en
Publisher: John Wiley & Sons
Release Date : 1980

Control And Coordination In Hierarchical Systems written by and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980 with Mathematics categories.

"The purpose of this book is to present the theory of control and coordination in hierarchical systems - that is, in systems where the decision-making responsibility has been divided. Since it aims to present theory that will be useful for applications, it not only encompasses the basic, general, and consequently somewhat abstract principles of coordination, but also considers such practical features as differences between models and the reality they describe, constraints, possible use of feedback information, and time horizons." --Preface.

Measurement Of Nonlinear Ultrasonic Characteristics

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Author : Kyung-Young Jhang
language : en
Publisher: Springer Nature
Release Date : 2020-01-14

Measurement Of Nonlinear Ultrasonic Characteristics written by Kyung-Young Jhang and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-01-14 with Technology & Engineering categories.

Conventional ultrasonic methods based on ultrasonic characteristics in the linear elastic region are mainly sensitive to mature defects but are much less responsive to micro-damage or incipient material degradation. Recently, nonlinear ultrasonic characteristics beyond the linear ultrasonic amplitude range have been studied as a method for overcoming this limitation, and hence, many researchers are engaged in theoretical, experimental, and various application studies. However, the nonlinear ultrasonic characteristics are quite exacting compared to the linear phenomena so that they require vast experience and high proficiency in order to obtain proper experimental data. Actually, many researchers, especially beginners including graduate students, have difficulty in reliably measuring nonlinear ultrasonic characteristics. This book provides key technological know-how from experts with years of experience in this field, which will help researchers and engineers to obtain a clear understanding and high quality data in the nonlinear ultrasonic experiments and applications.

Proceedings Of Icdmc 2019

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Author : Lung-Jieh Yang
language : en
Publisher: Springer Nature
Release Date : 2020-06-01

Proceedings Of Icdmc 2019 written by Lung-Jieh Yang and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-06-01 with Technology & Engineering categories.

This book comprises select proceedings of the International Conference on Design, Materials, Cryogenics and Constructions (ICDMC 2019). The chapters cover latest research in different areas of mechanical engineering such as additive manufacturing, automation in industry and agriculture, combustion and emission control, CFD, finite element analysis, and engineering design. The book also focuses on cryogenic systems and low-temperature materials for cost-effective and energy-efficient solutions to current challenges in the manufacturing sector. Given its contents, the book can be useful for students, academics, and practitioners.

Fatigue And Fracture Of Nanostructured Materials

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Author : Pasquale Cavaliere
language : en
Publisher: Springer Nature
Release Date : 2020-10-27

Fatigue And Fracture Of Nanostructured Materials written by Pasquale Cavaliere and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-10-27 with Science categories.

This book describes the main approaches for production and synthesis of nanostructured metals and alloys, taking into account the fatigue behavior of materials in additive manufactured components. Depending on the material type, form, and application, a deep discussion of fatigue properties and crack behavior is also provided. Pure nanostructured metals, complex alloys and composites are further considered. Prof. Cavaliere’s examination is supported by the most up-to-date understanding from the scientific literature along with a thorough presentation of theory. Bringing together the widest range of perspective on its topic, the book is ideal for materials researchers, professional engineers in industry, and students interested in nanostructured materials, fracture/fatigue mechanics, and additive manufacturing. Describes in detail the relevance of nanostructures in additive manufacturing technologies; Includes sufficient breadth and depth on theoretical modelling of fatigue and crack behavior for use in the classroom; Identifies many open questions regarding different theories through experimental finding; Contextualizes the latest scientific results for readers in industry.

Fatigue And Fracture Mechanics

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Author : Robert S. Piascik
language : en
Publisher: ASTM International
Release Date : 1997

Fatigue And Fracture Mechanics written by Robert S. Piascik and has been published by ASTM International this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with Aluminum alloys categories.

Mechanical Fatigue Of Metals

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Author : José A.F.O. Correia
language : en
Publisher: Springer
Release Date : 2019-05-07

Mechanical Fatigue Of Metals written by José A.F.O. Correia and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-05-07 with Science categories.

This volume contains the proceedings of the XIX International Colloquium on Mechanical Fatigue of Metals, held at the Faculty of Engineering of the University of Porto, Portugal, 5-7 September 2018. This International Colloquium facilitated and encouraged the exchange of knowledge and experiences among the different communities involved in both basic and applied research in the field of the fatigue of metals, looking at the problem of fatigue exploring analytical and numerical simulative approaches. Fatigue damage represents one of the most important types of damage to which structural materials are subjected in normal industrial services that can finally result in a sudden and unexpected abrupt fracture. Since metal alloys are still today the most used materials in designing the majority of components and structures able to carry the highest service loads, the study of the different aspects of metals fatigue attracts permanent attention of scientists, engineers and designers.

Shape Memory Alloys For Biomedical Applications

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Author : T Yoneyama
language : en
Publisher: Elsevier
Release Date : 2008-11-21

Shape Memory Alloys For Biomedical Applications written by T Yoneyama and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-11-21 with Technology & Engineering categories.

Shape memory alloys are suitable for a wide range of biomedical applications, such as dentistry, bone repair and cardiovascular stents. Shape memory alloys for biomedical applications provides a comprehensive review of the use of shape memory alloys in these and other areas of medicine. Part one discusses fundamental issues with chapters on such topics as mechanical properties, fabrication of materials, the shape memory effect, superelasticity, surface modification and biocompatibility. Part two covers applications of shape memory alloys in areas such as stents and orthodontic devices as well as other applications in the medical and dental fields. With its distinguished editors and international team of contributors, Shape memory alloys for biomedical applications is an essential reference for materials scientists and engineers working in the medical devices industry and in academia. A comprehensive review of shape memory metals and devices for medical applications Discusses materials, mechanical properties, surface modification and biocompatibility Chapters review medical and dental devices using shape memory metals, including stents and orthodontic devices

Aluminum Lithium Alloys

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Author : N Eswara Prasad
language : en
Publisher: Butterworth-Heinemann
Release Date : 2013-09-20

Aluminum Lithium Alloys written by N Eswara Prasad and has been published by Butterworth-Heinemann this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-09-20 with Technology & Engineering categories.

Because lithium is the least dense elemental metal, materials scientists and engineers have been working for decades to develop a commercially viable aluminum-lithium (Al-Li) alloy that would be even lighter and stiffer than other aluminum alloys. The first two generations of Al-Li alloys tended to suffer from several problems, including poor ductility and fracture toughness; unreliable properties, fatigue and fracture resistance; and unreliable corrosion resistance. Now, new third generation Al-Li alloys with significantly reduced lithium content and other improvements are promising a revival for Al-Li applications in modern aircraft and aerospace vehicles. Over the last few years, these newer Al-Li alloys have attracted increasing global interest for widespread applications in the aerospace industry largely because of soaring fuel costs and the development of a new generation of civil and military aircraft. This contributed book, featuring many of the top researchers in the field, is the first up-to-date international reference for Al-Li material research, alloy development, structural design and aerospace systems engineering. Provides a complete treatment of the new generation of low-density AL-Li alloys, including microstructure, mechanical behavoir, processing and applications Covers the history of earlier generation AL-Li alloys, their basic problems, why they were never widely used, and why the new third generation Al-Li alloys could eventually replace not only traditional aluminum alloys but more expensive composite materials Contains two full chapters devoted to applications in the aircraft and aerospace fields, where the lighter, stronger Al-Li alloys mean better performing, more fuel-efficient aircraft