Smart Materials

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  • Topic: Shape memory polymer, Metallurgy, Shape memory alloy
  • Pages : 7 (1525 words )
  • Download(s) : 214
  • Published : March 13, 2013
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A PAPER ON
“SMART MATERIALS:A NEW TREND IN TECHNOLOGY”

PRESENTED BY,
SAHIL G. GOVINDWAR.
govindwar.sahil@gmail.com Contact No: 7709575108.

BABASAHEB NAIK COLLEGE OF ENGINEERING,
CIVIL ENGINEERING DEPARTMENT.
PUSAD.

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CONTENTS
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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 ramesh_612@yahoo.c ABSTRACT This paper will provide an overview of the smart materials. The various types of smart material are also presented in this paper. To get the clear idea about the smart materials, its definition and types are explained briefly. Some of the types of these include piezoelectric materials, magneto-rheostatic materials, electro-rheostatic materials, and shape memory alloys piezoelectric, Varieties of smart materials already exist, and research is being carried out extensively to derive new materials. Applications of various types of smart materials are clearly explained. Some of applications of already existing smart materials are studied. The expectations of the smart materials and the predictions of future applications have been presented on the later part of the paper. And it is concluded that the application of smart material in future becomes a trend in various fields in engineering.

INTRODUCTION
Smart material can be defined as material that can significantly change their mechanical properties (such as shape, stiffness, and viscosity), or their thermal, optical, or electromagnetic properties, in a predictable or controllable manner in response to their environment.

The development of durable and cost effective high performance construction materials and systems is important for the economic well being of a country mainly because the cost of civil infrastructure constitutes a major portion of the national wealth. To address the problems of deteriorating civil infrastructure, research is very essential on smart materials. This paper highlights the use of smart materials for the optimal performance and safe design of buildings and other infrastructures particularly those under the threat of earthquake and other natural hazards. The peculiar properties of the shape memory alloys for smart structures render a promising area of research in this field.

CLASSIFICATION OF SMART MATERIALS

Smart materials can be broadly classified into the following categories: (i) Sensing materials - materials that can provide information on its current condition or ‘health’.
Ex:optical fibers,piezoelectric material,electrostrictive material, (ii) Actuating materials - materials that can change dimensions under external stimulus (such as heating/cooling or the introduction of an electromagnetic field). When restrained, an actuating force will be provided.

Ex: shape memory alloy, piezoelectric material,magnetostrictive material. (iii) Self-repairing materials- materials that can repair themselves, for example, through the automatic healing of cracks.

Ex: cementitious material,polymeric material.
It should be noted that some materials exhibit more than one of the above properties and It is better to use them in combination with conventional material.

Sensing Materials

1. Optical Fibers:
Fiber optic sensors with crack monitoring capability have been developed by Wolff and Messelier (1992), Ansari et al (1993); Voss and Wanser (1994).It is also used to...
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