Application Of Shape Memory Alloy Properties - 1427 Words

Table of Contents 1. INTRODUCTION 1 1.1. Definition 1 1.2. Displacive Transformations 1 1.3. Hysteresis 2 1.4. Crystal structures of Ti-Ni based martensites 3 1.5. Spectroscopy techniques to determine composition of SMA 4 1.5.1. Energy Dispersive X-Ray Spectroscopy 4 1.6. Phase diagram of Ti-Ni Alloys 5 2. APPLICATION OF SHAPE MEMORY ALLOYS IN INTELLIGENT REINFORCED CONCRETE STRUCTURES (IRCS) 7 2.1. Concept of IRCs 7 2.2. Important Shape Memory Alloy Properties Applied in IRC 7 2.2.1. Shape Memory Effect 7 2.2.2 Thermal Actuation Ability 7 2.2.3 Damping 7 2.3. Experimental Approach 7 2.3.1. Material Used 7 2.3.2 Test Specimen 7 2.3.3 Method 8 2.3.4 Results and Conclusions 9 2.4 Outcomes 11 2.5. Practical Cosiderations 11 2.5.1. Practical Limitations 11 2.5.2. Stoichiometric Considerations 11 2.5.3. Effect of Heat Treatment and Cold Work on SMAs 12 3. A FINAL WORD ON SMAS 14 REFERENCES 15 1. INTRODUCTION 1.1. Definition Shape memory alloys (SMA) have attracted much attention in recent years, since they are smart (or intelligent) materials, as well as functional materials, which already exist. These alloys possess the characteristics of the shape memory effect (SME) and super-elasticity (SE) which are caused by the martensitic (or displacive) transformation (MT) and its reverse transformation to the parent austenite phase; we define the characteristic transformation temperatures as follows; Ms: martensite start temperature upon cooling; Mf: martensite finishShow MoreRelatedSmart Materials1525 Words   |  7 PagesBABASAHEB NAIK COLLEGE OF ENGINEERING, CIVIL ENGINEERING DEPARTMENT. PUSAD. . CONTENTS . Sr. No. | Title | Page No. | 1 | Abstract | 1 | 2 | Introduction | 1 | 3 | Classification | 2 | 4 | Advantages and Disadvantages | 4 | 5 | Applications | 5 | 6 | The future | 5 | 7 | Conclusion | 6 | ABSTRACT P.V.P Siddhartha instate of technology Read MoreThe Shape Memory Effect And Super Elasticity2345 Words   |  10 PagesINTRODUCTION The Shape Memory Alloys are quite fascinating materials characterised by a Shape Memory effect and Super-elasticity, which ordinary metals and alloys do not have. This unique behaviour was first found in Au-47.5%Cd alloy in 1951, and was publicised by its discovery in a Ti-Ni alloy in 1963. After much research and development thereafter, shape memory alloys are now being practically used as new functional alloys for pipe couplings, antennae for cellular phones and various actuatorsRead MoreAdvantages Of The Irc Structures896 Words   |  4 Pagesconcrete that are used in practice make IRCs viable for only extremely specialised applications. Due to the thermomechanical propertied of SMAs, the IRC properties may vary with the ambient temperature (Menna et al, 2014; pg33). In addition, as the mechanism of the martensite to austenite phase transformation requires heating, the actualisation of the large-scale heating of the IRC poses an extra hurdle to their application. Min et al (2011) also note that certain hydration products of cement are unstableRead MoreSmart Materials in Aerospace Industry6256 Words   |  26 Pages Introduction 3 1. Purpose 4 2. Background 4 3. Scope 4 2. Types and Applications of Smart Materials 1. Piezoelectric Material 5 2. Shape Memory Alloys 14 3. Magnetostrictive Materials 20 4. Rheological Fluids 22 3. Discussion 25 4. Conclusion 26 5. References 27 Abstract This report will cover the different types of smart materials, and their applications in the aerospace industry. An introduction is made with regards to the backgroundRead MoreIntroduction to Noise and Vibration Damping2431 Words   |  10 Pagesinclude shape-memory alloys (SMAs), ferromagnetic alloys and other alloys. The SMAs provide damping for the reasons explained in the following paragraphs. Ferromagnetic alloys also provide damping through the magnetomechanical mechanism which is called as movement of the magnetic domain in boundaries during vibration. Other alloys provide damping through microstructural design. The is most commonly used due to their low cost. However, more than one mechanism can be applied to the same alloy. The shape-memoryRead MoreThe Modeling and Aero-Elastic Analysis Performed in MSc Nastran Finite Element Software2015 Words   |  8 PagesKevlar fibre results in a significant positive hybrid effect in the impact energy. When the hybrid is in the form of a sandwich with the Kevlar fibres placed in the outside layers, positive hybrid effect will be observed. Other than that, Shape Memory Alloy (SMA) is a well-known actuator that has been widely used in industry because of its unique characteristics. One of the unique character that belongs to SMA is it can enhance the stiffness of the smart composite structure. 1.2 Problem statementRead More##thodontics And Dentofacial Orthopaedics1809 Words   |  8 PagesSciences, King George’s Medical University, Lucknow (U.P.), India; in association with C.I.P.E.T (Central Institute of Plastics and Engineering Technology), Lucknow (U.P.), India to evaluate and compare the effect of intraoral environment on the properties of different alignment wires retrieved from the patients mouth(72 arches) after initial alignment (4 months) . Selection criteria of subjects were as follows: Inclusion criteria: 1. Upper and lower fixed orthodontic treatment required. 2. Had notRead MoreThe Key Component Of Computer Systems1371 Words   |  6 Pages Memory has been the key component of computer systems right from the beginning. The convergence of consumer, communication, and data processing applications combined with the rapid growth of cloud computing services have led to an explosive growth in memory requirement (Baldi et al., 2014; Abaker et al., 2015). At present, DRAM and NAND flash memories together make up 89% of the memory market (Baldi et al., 2014). The success of DRAM and flash has been essentially attributed to their small cellRead MoreUnknown5251 Words   |  22 Pagesas coherent, resonant biomagnetic emissions by which a less coherent EM field of the patient is tuned to the specific frequency and phase, and through which homeostasis can be aligned to induce healing. Definition of bioelectronics The application of electronic theories and techniques to the problems of biology. The use of biotechnology in electronic devices such as biosensors, molecular electronics, and neuronal interfaces; more speculatively, the use of proteins in constructing circuitsRead MoreLab Report : Science Or Engineering Course Essay3163 Words   |  13 Pagesproblems, applications of a particular polymer, factory redesigns, use of a particular mathematical application in industry, or design failures. The purpose of case studies is help you critically think through a new subject area and apply your newly discovered knowledge to one specific topic. You actually learn more about something by taking it and applying it to something new, so these are really good learning experiences. Suppose you are assigned a case study on how shape-memory alloys are used