The deflection and time response of shape memory alloy laminated composite plate are
studied using first order shear deformation theory. The composite plate consists of a thin
layer of shape memory alloy bonded to an elastomer layer. The governing equations of the
plate are developed using the energy balance equations and a two-dimensional model of
the shape memory alloy layer. The finite element is modeled with the first order
shear deformation theory and equivalent single layer assumptions. The model is
validated by comparing the results of the displacements and time responses with the
literature. As a specific example, a cantilever composite plate is used for parametric
studies. The effect of material properties, electric input power, thickness, thermal
conductivity and heat sink strength on deflection and time response is also investigated.
This paper presents a finite-element model for the free vibration analysis of a shape memory alloy (SMA) surface laminated composite cantilever plate. The proposed device is considered to undergo small displacements and small strains. The governing equations are developed utilizing the first-order shear deformation theory, energy balance equations and two-dimensional model of the SMA layer. The finite element is modelled using first-order shear deformation theory and equivalent single-layer assumptions. The plate is considered with clamped-free boundary conditions, and the SMA layer is at the top of the composite plate. Parametric studies are conducted to study the effect on free vibration of varying the SMA volume fraction, the temperature of the SMA, and the thickness, width and stiffness of the composite cantilever plate.
Construction projects are facing a greater number of uncertainties and more severe risks, which could cause negative impact on project such as time, cost and quality, resulting losses in project. This study focuses on the risk management in construction project with respect to materials and material management, wherein six major ongoing projects in Goa were selected for case studies. The Four main objectives of this study were to identify key risk factors, Identify risk frequency & risk impact, Categories risk and suggest remedial measures to overcome these risks. This study will be based on findings of a questionnaire-based survey, the questionnaires will be designed / prepared based on the knowledge obtained from the relevant literature reviews and in consultation with the project managers / heads of construction sites. All the questionnaires are self assessed and use a Likert scale to measure risk factor by obtaining rating on the basis of likelihood from the Project Engineering team.
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