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The IUP Journal of Mechanical Engineering
Thermomechanical Properties of Piezoelectric Microstretch Solid Irradiated by Laser and Subjected to Ramp Type Heating Source
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The paper explains the thermomechanical interactions of ultra-laser heat source with the piezoelectric microstretch thermoelastic material. The medium is subjected to mechanical and thermal boundary conditions. Integral transform technique has been applied to the basic equations to solve the problem. Expressions have been obtained for normal stress, tangential stress, microstress and temperature distribution. The numerically computed results are shown graphically. The analysis of various stress quantities has been discussed theoretically. Some special cases are also deduced from the research.

 
 

Nowadays, the smart materials have a great importance in engineering, technology and sciences. The important features of smart materials are due to their internal molecular structures known as smart structure, for example, sensors, actuators, etc. One of the smart materials currently under research applications are piezoelectric materials. The piezoelectric substances are those which generate electricity (known as piezoelectricity) in response to mechanical stress. Such types of materials are used in actuators and sensors due to their direct and converse piezoelectric effects. To ensure that the piezoelectric appliances are functional in extreme temperature conditions, the thermal effects are to be considered in mathematical model development. So, as a result of these electrical-thermal-mechanical coupling, thermoelastic theories of piezoelectric materials have been developed. First of all, a theory of piezoelectricity was developed by Mindlin (1961) and the basic governing relations were developed for piezoelectric thermoelastic solid. Later, Nowacki (1978) deduced the physical laws and theorems for thermopiezoelectric substances. Later, Chandrasekharaiah (1984) extended this theory also including the finite speed of thermal disturbances. The thermoelastic theory of piezoelectric materials was applied to composite plate by Tauchert (1992). Recently, some more problems related to piezoelectric thermoelastic materials have been investigated by Othman and Ahmed (2016) and Vashishth and Sukhija (2017).

 
 

Piezoelectric, Ultra-laser heat source, Microstretch thermoelastic, Normal source, Thermal source