Smart Materials

1525 WordsMar 13, 20137 Pages
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. . 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…show more content…
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 detect moisture content. A sensor for moisture detection have been developed by Michie et al (1994). 2. Piezoelectric materials: Piezoelectric materials have two unique properties which are interrelated. When a piezoelectric material is deformed, it gives off a small but measurable electrical material it experiences a significant increase in size (up to a 4% change in volume). They are often used to measure fluid compositions, fluid density, fluid viscosity, or the force of an impact. In stress and pressure sensing, the PVDF materials have been found to give a better electrical response. Actuating Materials 1.Piezoelectric materials: A piezoceramic material can be used as a strain sensor by taking advantage of the direct piezoelectric effect that converts a mechanical action into an electric charge. But the same material can be also used for actuation applications by using the converse piezoelectric effect that.converts an electrical field into a mechanical strain. 2. Shape memory alloys: Shape memory alloys (SMA's) are
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