Download or read book The Development of Titanium Nickel Shape Memory Alloy Devices written by Erik Rashaun James and published by . This book was released on 2007 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt: Adapts shape memory alloys (SMA)s into actuator designs and develops related active devices. Focuses on rotary motion systems and creating crawling, biologically inspired, simulated inchworms. Investigates the electromechanical characteristics of these devices and seeks to develop a functional biologically inspired SMA electric motor.
Download or read book Shape Memory Alloys for Biomedical Applications written by T Yoneyama and published by Elsevier. This book was released on 2008-11-21 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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
Download or read book The Development and Processing of Nickel Titanium Shape Memory Alloys Containing Palladium Using Selective Laser Melting written by Hollie L. Baker and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nitinol (NiTi) is a commonly used biomaterial, due to its unique superelasticity and shape memory effect. However, NiTi has a low radiopacity, so it is difficult to observe using electromagnetic radiation once inside the body. The radiopacity of NiTi can be improved by alloying with a denser, ternary element. Platinum (Pt) is a popular choice as a result of its biocompatibility and corrosion resistance. However, alloying with palladium (Pd) is fast becoming a viable alternative due to its similar properties and much lower cost. The overall purpose of this thesis is to investigate the suitability of selective laser melting (SLM) for manufacturing palladium (Pd) modified nickel-titanium (NiTi) shape memory alloys (SMAs), that can be used in biomedical devices within the human body. This study presents a methodology for in-situ alloying Pd into NiTi using selective laser melting (SLM) to manufacture dense, defect free components. The influence of melt pool dimensions on chemical homogeneity was investigated. The laser power, laser scanning velocity and laser scan spacing were independently varied to alter the energy density of the laser and in turn, modify the dimensions of the melt pool. It has been found that the SLM process parameters can be manipulated to fully diffuse Pd into the NiTi matrix, providing a homogenous microstructure. Out of the three process parameters investigated, the scan velocity had the greatest influence on the melt pool. Thus, increasing the dissolution of Pd as a result of the Marangoni effect and increased melt pool liquid life span. The suitability of the dense and chemically homogeneous SLM fabricated TiNiPd alloys were investigated for their use in biomedical applications. Furthermore, the effects of Pd on the properties of the binary NiTi alloy were also studied. This was performed by testing the alloy's phase transformation behaviour, cell biocompatibility, corrosion resistance, superelastic response and X-ray visibility. Overall, it can be concluded that the addition of Pd had advantageous benefits towards improving the properties of binary NiTi for use in biomedical applications. Alloying with 7 at % Pd in substitution for Ni, was found to improve the alloy's corrosion resistance, X-ray visibility and biocompatibility, thus making the ternary TiNiPd alloy a promising biomaterial.
Download or read book Nickel Titanium Materials written by Yoshiki Oshida and published by Walter de Gruyter GmbH & Co KG. This book was released on 2020-08-24 with total page 1046 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nickel-Titanium alloys are smart materials exhibiting unique properties such as superelasticity and shape-memory effect. The material has been used as orthodontic wires in the dental field for over 20 years. This book is a comprehensive overview to the field of Ni-Ti Materials and the physical, chemical and mechanical properties of this versatile alloy. In addition, complications and challenges exhibited in applications are also discussed.
Download or read book Shape Memory and Superelastic Alloys written by K Yamauchi and published by Elsevier. This book was released on 2011-04-30 with total page 225 pages. Available in PDF, EPUB and Kindle. Book excerpt: Shape memory and superelastic alloys possess properties not present in ordinary metals meaning that they can be used for a variety of applications. Shape memory and superelastic alloys: Applications and technologies explores these applications discussing their key features and commercial performance. Readers will gain invaluable information and insight into the current and potential future applications of shape memory alloys.Part one covers the properties and processing of shape memory effect and superelasticity in alloys for practical users with chapters covering the basic characteristics of Ti-Ni-based and Ti-Nb-based shape memory and superelastic (SM/SE) alloys, the development and commercialisation of TiNi and Cu-based alloys, industrial processing and device elements, design of SMA coil springs for actuators before a final overview on the development of SM and SE applications. Part two introduces SMA application technologies with chapters investigating SMAs in electrical applications, hot-water supply, construction and housing, automobiles and railways and aerospace engineering before looking at the properties, processing and applications of Ferrous (Fe)-based SMAs. Part three focuses on the applications of superelastic alloys and explores their functions in the medical, telecommunications, clothing, sports and leisure industries. The appendix briefly describes the history and activity of the Association of Shape Memory Alloys (ASMA).With its distinguished editors and team of expert contributors, Shape memory and superelastic alloys: Applications and technologies is be a valuable reference tool for metallurgists as well as for designers, engineers and students involved in one of the many industries in which shape memory effect and superelasticity are used such as construction, automotive, medical, aerospace, telecommunications, water/heating, clothing, sports and leisure. - Explores important applications of shape memory and superelastic alloys discussing their key features and commercial performance - Assesses the properties and processing of shape memory effect and superelasticity in alloys for practical users with chapters covering the basic characteristics - Introduces SMA application technologies investigating SMAs in electrical applications, hot-water supply, construction and housing, automobiles and railways and aerospace engineering
Download or read book Shape Memory Implants written by L. Yahia and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 539 pages. Available in PDF, EPUB and Kindle. Book excerpt: Shape memory alloy implants or "smart biomaterial" have already been used in humans for 20 years in selected countries. Restrictions in the use of biomaterials in living organisms being reduced throughout the world now the use of SMA implants continue to expand in the fields of vascular and orthopaedic surgery, minimally invasive surgery and drug delivery systems. This book is to provide a state of the art of SMA implants and devices. For the first time long-term clinical experiences and techniques of SMA biocompatibility are presented.
Download or read book Smart Structures Theory written by Inderjit Chopra and published by Cambridge University Press. This book was released on 2014 with total page 925 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on smart materials and structures, which are also referred to as intelligent, adaptive, active, sensory, and metamorphic. The ultimate goal is to develop biologically inspired multifunctional materials with the capability to adapt their structural characteristics, monitor their health condition, perform self-diagnosis and self-repair, morph their shape, and undergo significant controlled motion.
Download or read book Theory and Principles of Nickel titanium Shape Memory Alloy as Smart Material on the Design of Reconfigurable Die written by Miguel Bueno Vives and published by . This book was released on 2010 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fast growth and adaptability to rapid changes in the manufacture industry has evolved towards a technological environment; as the life between design and final manufacture production stage is shortened. The main technological developments such as modular adaptable methodologies, adaptable processes and equipments in order to get a reconfigurationof manufacturing process are the drivers for the Mnaufacture Vision industry in America for 2020. The core of this research is the design and development of a reconfigurable mold complying with the manufacture vision industry in order to manufacture thermoformed productos, controlled by a reconfigurable system using a Shape Memory Alloy with a constitutive model to predict the material properties. The work is divided into three stages. First the main framework, the objective and the justification of the research is given. The second covers a mathematical model and a diagram for a Shape Memory Alloy, linking the micro structural changes and the changes for the material. The third one, a design of a reconfigurable system using a shape memory alloy as actuator is presented, developing a modular adaptable methodology for a reconfigurable tool. As a result of this work, a scientific contribution of a full constitutive equation is presented for Shape Memory Alloys such as Nickel-Titanium materials; also a modular reconfigurable detailed design is presented to validate an existing patent and the use of new materials as actuators in different fields.
Download or read book Engineering Aspects of Shape Memory Alloys written by T W Duerig and published by Butterworth-Heinemann. This book was released on 2013-10-22 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: Engineering Aspects of Shape Memory Alloys provides an understanding of shape memory by defining terms, properties, and applications. It includes tutorials, overviews, and specific design examples—all written with the intention of minimizing the science and maximizing the engineering aspects. Although the individual chapters have been written by many different authors, each one of the best in their fields, the overall tone and intent of the book is not that of a proceedings, but that of a textbook. The book consists of five parts. Part I deals with the mechanism of shape memory and the alloys that exhibit the effect. It also defines many essential terms that will be used in later parts. Part II deals primarily with constrained recovery, but to some extent with free recovery. There is an introductory paper which defines terms and principles, then several specific examples of products based on constrained recovery. Both Parts III and IV deal with actuators. Part III introduces engineering principles while Part IV presents several of the specific examples. Finally, Part V deals with superelasticity, with an introductory paper and then several specific examples of product engineering.
Download or read book Design of Shape Memory Alloy SMA Actuators written by Ashwin Rao and published by Springer. This book was released on 2015-05-08 with total page 137 pages. Available in PDF, EPUB and Kindle. Book excerpt: This short monograph presents an analysis and design methodology for shape memory alloy (SMA) components such as wires, beams, and springs for different applications. The solid-solid, diffusionless phase transformations in thermally responsive SMA allows them to demonstrate unique characteristics like superelasticity and shape memory effects. The combined sensing and actuating capabilities of such materials allows them to provide a system level response by combining multiple functions in a single material system. In SMA, the combined mechanical and thermal loading effects influence the functionality of such materials. The aim of this book is to make the analysis of these materials accessible to designers by developing a "strength of materials" approach to the analysis and design of such SMA components inspired from their various applications with a review of various factors influencing the design process for such materials.
Download or read book Shape Memory Alloy Actuators written by Mohammad H. Elahinia and published by John Wiley & Sons. This book was released on 2016-01-19 with total page 297 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a systematic approach to realizing NiTi shape memory alloy actuation, and is aimed at science and engineering students who would like to develop a better understanding of the behaviors of SMAs, and learn to design, simulate, control, and fabricate these actuators in a systematic approach. Several innovative biomedical applications of SMAs are discussed. These include orthopedic, rehabilitation, assistive, cardiovascular, and surgery devices and tools. To this end unique actuation mechanisms are discussed. These include antagonistic bi-stable shape memory-superelastic actuation, shape memory spring actuation, and multi axial tension-torsion actuation. These actuation mechanisms open new possibilities for creating adaptive structures and biomedical devices by using SMAs.
Download or read book Metals for Biomedical Devices written by Mitsuo Niinomi and published by Elsevier. This book was released on 2010-03-31 with total page 439 pages. Available in PDF, EPUB and Kindle. Book excerpt: Despite recent advances in medical devices using other materials, metallic implants are still one of the most commercially significant sectors of the industry. Given the widespread use of metals in medical devices, it is vital that the fundamentals and behaviour of this material are understood. Metals in biomedical devices reviews the latest techniques in metal processing methods and the behaviour of this important material.Initial chapters review the current status and selection of metals for biomedical devices. Chapters in part two discuss the mechanical behaviour, degradation and testing of metals with specific chapters on corrosion, wear testing and biocompatibility of biomaterials. Part three covers the processing of metals for biomedical applications with chapters on such topics as forging metals and alloys, surface treatment, coatings and sterilisation. Chapters in the final section discuss clinical applications of metals such as cardiovascular, orthopaedic and new generation biomaterials.With its distinguished editor and team of expert contributors, Metals for biomedical devices is a standard reference for materials scientists, researchers and engineers working in the medical devices industry and academia. - Reviews the latest techniques in metal processing methods including surface treatment and sterilisation - Examines metal selection for biomedical devices considering biocompatibility of various metals - Assesses mechanical behaviour and testing of metals featuring corrosion, fatigue and wear
Download or read book In Search of Martensite written by Jeffry Disko and published by . This book was released on 2010 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: There is a broad range of life-saving medical implants and devices that rely on the shape-memory (SME) and superelastic properties of various nickel-based alloys [8]. Unfortunately, there is also serious concern about the toxicity of nickel. Titanium based shape-memory alloys have been noted as potentially non-toxic replacements of the more traditional, nickel-based shape memory alloys. In this thesis I present research concerning the potential of SME-capable titanium-tantalum alloys to replace Ni-based alloys in medical implants. A method for heat treatment of Ti -Ta alloys of varying compositions to induce formation of martensite was developed. Heat-treated alloys were then tested for SME and superelastic behavior by means of hot oil recovery tests and were characterized through optical microscopy. Metallographs of some of the samples were taken throughout the processing and testing procedures in order to directly observe changes in microstructure..
Download or read book Shape Memory Alloys written by Farzad Ebrahimi and published by BoD – Books on Demand. This book was released on 2017-09-20 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a result of contributions of experts from international scientific community working in different aspects of shape memory alloys (SMAs) and reports on the state-of-the-art research and development findings on this topic through original and innovative research studies. Through its five chapters, the reader will have access to works related to ferromagnetic SMAs, while it introduces some specific applications like development of faster SMA actuators and application of nanostructural SMAs in medical devices. The book contains up-to-date publications of leading experts, and the edition is intended to furnish valuable recent information to the professionals involved in shape memory alloys analysis and applications. The text is addressed not only to researchers but also to professional engineers, students, and other experts in a variety of disciplines, both academic and industrial, seeking to gain a better understanding of what has been done in the field recently and what kind of open problems are in this area.
Download or read book Nickel Titanium Smart Hybrid Materials written by Sabu Thomas and published by Elsevier. This book was released on 2022-01-26 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nickel-Titanium Smart Hybrid Materials: From Micro- to Nano-structured Alloys for Emerging Applications describes advanced properties that can be adapted in NiTi-alloys. Nickel-Titanium (NiTi) systems are receiving wide demand in growing industries due to their smart, high-temperature or biocompatible behavior. These influenced behaviors are carefully described in the micro-scale and nanoscale range, with NiTi smart materials described on the basis of their shape memory effect (SME) and super-elastic (SE) properties for sensor and actuator application. This book discusses novel properties of nickel-titanium systems, helping materials scientists and engineers produce smart technologies and systems for the aeronautical, automobile, mechanical, healthcare and electronics industries. - Describes the use of nanotechnology and microtechnology in nickel-titanium-based systems - Outlines the major properties of Nickel-Titanium Nanoalloys - Assesses the major challenges of manufacturing nickel-titanium nanoalloys at an industrial scale
Download or read book Process Development and Characterization to Manufacture Nickel Titanium Shape Memory Cantilever Micro electro mechanical Systems written by Dustin Michael Dequine and published by . This book was released on 2007 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: A study to document the fabrication process and to make a start on characterizing the steps required to create a shape memory nickel titanium cantilever structure. Applications for micro systems cantilever devices include micro valves, switches, actuators, pumps, and grippers.
Download or read book Ni free Ti based Shape Memory Alloys written by Hee Young Kim and published by Butterworth-Heinemann. This book was released on 2018-09-17 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ni-free Ti-based Shape Memory Alloys reviews the fundamental issues of biomedical beta-type Ti base shape memory and superelastic alloys, including martensitic transformation, shape memory and superelastic properties, alloy development, thermomechanical treatment and microstructure control, and biocompatibility. Some unique properties, such as large nonlinear elastic behavior and low Young's modulus, observed in metastable Ti alloys are discussed on the basis of phase stability. As it is expected that superelastic Ti alloys will further expand the applications of shape memory alloys within the biomedical field, this book provides a comprehensive review of these new findings in Ti-base shape memory and superelastic alloys. - Includes coverage of phase transformations in titanium alloys - Discusses mechanical properties and alloy development - Presents a review of Ti-based shape alloys and their applications
