Widespread usage and development of electrical/electronic devices can create severe problems for various other in our everyday lives due to harmful exposure electromagnetic (EM) radiation. Herein, we report on the interference (EMI)-shielding performance highly flexible conductive chlorinated polyethylene (CPE)/carbon nanofiber (CNF) nanocomposites fabricated by a probe-sonication-assisted simple solution-mixing process. The dispersion CNF nanofillers inside CPE matrix has been studied...

This article presents a novel application of an acquisition function-based Bayesian optimization (BO) method to optimally tune the hyperparameters soft margin support vector machine (SVM) for structural damage detection. The performance SVM classifiers is known depend heavily on selection hyperparameters. optimal yield minimum cross-validation error. However, no explicit functional relationship exists between and error which can be used as objective function. BO approach uses Bayes rule...

Effect of yttrium doping on the electrical transport properties sol-gel prepare nanocrystalline BiFeO3 was investigated. A comprehensive state-of-the art sophisticated instruments like x-ray diffraction, differential thermal analyzer, field emission scanning electron microscope, and HRTEM were utilized to characterize nanoparticles. It observed that values dc activation energy calculated from Arrhenius relation increase with content. The variation ac conductivity frequency temperature...

Abstract This study investigates the pull-in parameters of a microcantilever beam influenced by electrostatic and van der Waals forces in MEMS devices. The classical continuum theory(CCMT) is inadequate because presence nonpolar molecules, voids, dielectric materials at micro or nanoscale. Modified couple stress theory(MCST) nonclassical technique used microbeams for evolution length scale parameter(lm). Non-linearity due to large deflection force highly significant scale. Galerkin method...

An in situ chemical polymerization method was applied order to prepare polyaniline-multiwalled carbon nanotube (PANI-MWCNT) composites with different concentrations of MWCNT. X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, optical absorption and photoluminescence analyses the were performed investigate structural, morphological properties composites. Electrical transport PANI-MWCNT investigated temperature range 77 K ⩽ T 300 presence also absence a...

Polyvinyl alcohol–polypyrrole–multiwall carbon nanotube composite polymer films have been synthesized by a chemical oxidative polymerization technique. Dielectric properties measured in the frequency range from 20 Hz to 1 MHz and temperature 77 ⩽ T 300 K. Electric modulus vector analysis gives presence of dielectric relaxation peaks for different composites which activation energies calculated.

Abstract Polyaniline (PANI) was synthesized by the well‐known oxidative polymerization of aniline with ammonium peroxodisulfate as oxidant. The morphological, structural, thermal, optical, magnetic, and electrical properties were characterized scanning electron microscopy, X‐ray diffraction, Fourier transform infrared, thermogravimetric analysis, differential calorimetry, ultraviolet–visible spectroscopy, room‐temperature magnetic measurements, low‐temperature transport measurements standard...

This study uses an analytical method to examine the scattering of a Love wave from interfacial crack in thin lossy media (viscoelastic material) that serves as waveguide layer attached unbounded loss-less (piezoelectric material). The viscoelastic material is modeled using Kelvin–Voigt equation. Phase velocity and attenuation have been calculated by equating real imaginary parts dispersion relation zero, respectively, due complex number material. Using integral transform approach dislocation...

A robust unknown input observer for a nonlinear system whose function satisfies the Lipschitz condition is designed based on linear matrix inequality approach. Both noise and uncertainties are taken into account in deriving observer. component fault detection isolation scheme these observers proposed. The effectiveness of diagnosis shown by applying them an electrohydraulic actuator.

Carbon nanotubes (CNTs) impart great multi-functionality when reinforced with a polymer matrix. This paper shows the qualitative and quantitative improvements of mechanical, electrical, electromagnetic interference shielding effectiveness properties additions multiwalled carbon (MWCNTs) functionalized MWCNTs (FMWCNTs) in ethylene methyl acrylate (EMA) polymer. Mechanical characterization is performed through tensile testing, (EMI SE) calculated from scattering parameters obtained vector...

Abstract We have investigated electrical transport properties of the composite multiwall carbon nanotubes–polypyrrole–polyvinyl alcohol. Samples are prepared in an situ chemical oxidative method and they characterized by X‐ray diffraction, field emission scanning electron microscope to understand their structure morphology, respectively. Mechanism is done below room temperature (77–300 K) presence absence magnetic up 1 T. following both one dimensional Mott's variable range hopping tunneling...

Continuum manipulators are a type of robot used for delicate applications, including safe human-robot interactions. Controlling these an accurate trajectory, especially in the case pneumatic actuation, is extremely challenging. Thus, this article proposes real-time kinematic trajectory control pneumatically actuated multi-segment bionic continuum manipulator with mobile base by combining neural network and analytical model cascaded controller to overcome challenge. The inverse kinematics...