Thermal Buckling of Laminated Plates using Modified Mantari Function

Majeed, Widad I.; Sadiq, Ibtehal Abbas

doi:10.24191/jmeche.v19i3.19813

Cited by 2 publications

(1 citation statement)

References 13 publications

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“…Williams and Yates [7] discovered that a mechanical vibration can be transformed to electric charges using piezoelectric materials which couples the electrical and mechanical properties. The surface of a piezoelectric material can experience mechanical strain when subjected to stress, which the material is capable of transforming into an electrical charge (voltage) [8][9][10][11][12][13]. Khaled et al [14] optimized the harvester shape employing COMSOL module BOBYQA to reach the maximum output electrical power.…”

Section: Introductionmentioning

confidence: 99%

Detecting Technique of COVID-19 Via an Optimized Piezoelectric Sensor

2023

jjmie

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In the last few years, SARS-CoVID-19 pandemic was the main cause of millions of deaths around the world and was the main reason for global economic recession. It is vital to explore noninvasive procedures to detect and eliminate this pandemic expeditious. In this research, we introduce a technique for detecting and quarantine the SARS-CoVID-19 by designing a piezoelectric device with a natural frequency that is equal to the virus structural natural frequency. Because of the resonance effect, the vibration of the device increases, and the power output produced by the piezoelectric layer in the harvester is used to detect the COVID-19 by powering a small LED. The light of the LED is a sign of infection. Furthermore, when the virus's natural frequency is determined, an ultrasonic resonance device can be used to eliminate the virus. Polymerase chain reaction test (PCR) is costly and time-consuming. Our proposed technique is both fast and inexpensive. The installing of the device, the modeling, and the treatment potentiality are discussed in this paper. To maximize the output power of the device at the virus natural frequency, three optimization algorithms are performed. It is observed that Bound Optimization by Quadratic approximation (BOBYQA) optimization algorithm enhances the output power. The analytical model of the proposed sensing device is derived based on the theory of Euler-Bernoulli. The voltage and power frequency response for open and closed circuits are analytically derived. A Finite Element Method (FEM) for the proposed sensing device is developed and analytically verified.

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Section: Introductionmentioning

confidence: 99%

Detecting Technique of COVID-19 Via an Optimized Piezoelectric Sensor

2023

jjmie

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Thermal buckling analysis for hybrid and composite laminated plate by using new displacement function

Kareem

2024

Open Engineering

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The analysis of a critical buckling temperature is dependent on the new displacement function field provided in the literature and uses third-order shear deformation theory. The value of the parameter “m,” which determines the new displacement function, closed with the three-dimensional (3D) elasticity results. Thermal critical buckling is analyzed for thick and thin laminated plates by using the Navier solution for symmetric and anti-symmetric cross-ply simply supported boundary conditions. Several design parameters are considered such as extension thermal coefficient ratio (α 1⁄α 2), number of schemes, thickness ratio (a/h), aspect ratio (a/b), and modular ratio (E 1/E 2) when analyzing the dynamic behavior of the critical buckling temperature for different materials, including composite (glass/epoxy) and hybrid (glass/carbon/epoxy), under uniformly distributed temperature load. The accuracy for theoretical results by using Matlab R2019b was checked with other results for different researchers and gave good agreement. Increasing orthotropic ratio and aspect ratio resulted in increasing critical buckling temperature in M1 than M2, whereas increasing thickness ratio, thermal coefficient expansion, and number of layers resulted in decrease in critical buckling temperature in M2 than M1.

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Thermal Buckling of Laminated Plates using Modified Mantari Function

Cited by 2 publications

References 13 publications

Detecting Technique of COVID-19 Via an Optimized Piezoelectric Sensor

Detecting Technique of COVID-19 Via an Optimized Piezoelectric Sensor

Thermal buckling analysis for hybrid and composite laminated plate by using new displacement function

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