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Über dieses Buch

This book introduces shape memory alloy technology with a specific focus on valve applications. The authors describe application characteristics as well the current and potential uses of this technology. They include an overview of thermal and electrical valves as well as detailed valve design strategies.

Inhaltsverzeichnis

Frontmatter

Chapter 1. Introduction

Abstract
This introductory chapter presents the aims of the book concerning the benefits, risks, and potentials of shape memory alloy elements as multifunctional drives in valves.
Alexander Czechowicz, Sven Langbein

Chapter 2. Valve Technology: State of the Art and System Design

Abstract
This chapter presents the basics of today’s valve technology discussing state-of-the-art valve thermal and electric drives. Beginning with the purpose and requirements of valves, this chapter introduces different valve drive technologies which are established on today’s market comparing them to potentials and possibilities of shape memory alloy-based valve drives.
Michael Hannig, Falk Höhne, Sven Langbein

Chapter 3. Introduction to Shape Memory Alloy Technology

Abstract
In this chapter, the basic effects of the phase transformation of shape memory alloys are discussed in brief as well as the material properties and the different alloy types. The basic functions and challenges in the production process reveal the influences on the actuating behavior of shape memory alloys.
Alexander Czechowicz, Sven Langbein

Chapter 4. Introduction to Shape Memory Alloy Actuators

Abstract
The focus of this chapter is laid on the actuating parameters of shape memory alloys. The explanation of the differences between thermal and electric applications of shape memory actuators is guided by dynamic and mechanic aspects. Other major topics focus the fatigue behavior, especially the fatigue-provoking parameters, and the possible designs of shape memory alloy actuators which can be used in valve applications.
Sven Langbein, Alexander Czechowicz

Chapter 5. Sensing Properties of SMA Actuators and Sensorless Control

Abstract
Shape memory alloy actuators also exhibit intrinsic sensor properties based on a considerable change in electrical resistance during martensite/austenite phase transformations. This chapter explains the basics of the effect through advanced experiments and points to its potential use for sensorless control applications.
Stefan Seelecke

Chapter 6. Potentials of Shape Memory Technology in Industrial Applications

Abstract
This chapter gives a general overview on the potentials of shape memory alloys in industrial applications and focuses on the strategic usage of pseudoplastic and pseudoelastic effects in order to combine the effects for enabling new beneficial constructions. Strategic differentiations of electric shape memory alloy drives are presented in comparison to electromotoric and solenoid drives in the first part of the chapter. The second part focuses on application potentials of spring and damping elements based on the pseudoelastic technology.
Sven Langbein

Chapter 7. Shape Memory Valves: Motivation, Risks, and Potentials

Abstract
The motivation for the utilization of shape memory alloys as valve drives is discussed in this chapter in detail. With focus on valve applications, a comparison of usable effects to state-of-the-art systems is presented with a method for strategic decision guide. This chapter also contains new concepts for SMA-based valve drive solutions which combine aspects of product and service development. Industrial product service systems (IPS2), as for example condition monitoring or concepts for modification of an SMA valve drive conclude the chapter.
Alexander Czechowicz, Sven Langbein

Chapter 8. Design of Thermal SMA Valves

Abstract
Most thermal shape memory alloy valve concepts are based on shape memory alloy spring actuators. Because the development of these elements itself is complex, a methodical approach is focused in this chapter by a calculation method of these actuators. A special attention is laid in this chapter on the backgrounds of the calculations and the possible parameters which can be set during the spring element development.
Sven Langbein, Konstantin Lygin

Chapter 9. Design of Electrical SMA Valves

Abstract
In contrast to thermal shape memory alloy actuators, electric SMA drives are mainly based on wire elements. Even if the wire looks far less complex than SMA springs, the development is determined by challenges regarding activation and dynamic aspects. Therefore, this chapter presents a fast-track calculation of electric SMA wire drives as well as an introduction into a numerical simulation of these actuators. This chapter is concluded by a strategic overview of an electric SMA valve with closer discussions on subsystems like connectors for SMA wires.
Alexander Czechowicz

Chapter 10. Methodology for SMA Valve Development Illustrated by the Development of a SMA Pinch Valve

Abstract
Product designers with little to no experience with shape memory alloy (SMA) drives might encounter problems with the vast amount of possible parameters during the development of SMA drives. Therefore, this chapter, which focuses on an example of the development of a SMA pinch valve, discusses excerpts from the German VDI 2248 guideline for SMA actuator product development. The chapter focuses on system design and mechanical calculations and discusses application parameters and subsystems that can be used in the example product.
Sven Langbein, Alexander Czechowicz

Chapter 11. Examples of Shape Memory Alloy Valves on Market

Abstract
This chapter sums up thermal and electrical shape memory alloy valves which have been established on market so far.
Alexander Czechowicz, Sven Langbein

Chapter 12. Future Perspectives of SMA and SMA Valves

Abstract
This final chapter presents the technological outlook of shape memory alloy technology and shape memory alloy drive-based valves. The focus is laid on research works in innovative fields as well as innovative valve concepts like microvalves and 3D-printable valves.
Sven Langbein, Alexander Czechowicz

Backmatter

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