Sallam Kouritem

Alexandria University | AU · Department of Mechanical Engineering

Composite materials play a crucial role in various industries, with plastic composites being particularly significant. This research specifically focuses on producing cotton fabric layers to reinforce polymeric composites. The experiment is designed in two phases. In the first stage, woven fabric is produced using roving as weft insertion instead o...

Many electrical devices can be powered and operated by harvesting the wasted energy of the surroundings. This research aims to overcome the challenges of output power with a sharp peak, small bandwidth, and the huge dimensions of the piezoelectric energy harvesters relative to the output power. The aforementioned challenges motivated us to investig...

This paper reviews self-powered medical devices integrated with advanced energy harvesting technologies. This article aims to explain the advantages of integrating self-powered medical devices with advanced energy harvesting technologies, outlining the transformation in healthcare system and patient experience. In today's world, we focus more on co...

This paper provides a short review of sustainable hybrid energy harvesting and its applications. The potential usage of self-powered wireless sensor (WSN) systems has recently drawn a lot of attention to sustainable energy harvesting. The objective of this research is to determine the potential of hybrid energy harvesters to help single energy harv...

A rapidly expanding global population and a sizeable portion of it that is aging are the main causes of the significant increase in healthcare costs. Healthcare in terms of monitoring systems is undergoing radical changes, making it possible to gauge or monitor the health conditions of people constantly, while also removing some minor possibilities...

This paper provides a comprehensive review of the recent progress made in energy harvesting systems for wearable technology. An energy-harvesting system would be a useful strategy to address the issue of powering wearable electronic devices. This review presents different wearable energy harvesting methods based on the human body's heat and mechani...

The quadrotor represents a class of highly nonlinear dynamic systems and its controlla-bility features are challenging. Hence, it serves as an ideal unmanned aerial vehicle platform to validate many artificial intelligence-based research investigations. Nonetheless, most of the offline tuning approaches devote efforts to find near optimal control g...

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 d...

Comprising a total of seven articles divided into five research articles, one review article, and one editorial article, this Special Issue is dedicated to new techniques for piezoelectric energy harvesting and its design, optimization, applications, and analysis [...]

A small amount of natural frequency deviation extremely decreases the output power. So, a multi-mass single harvester (bending harvester) was utilized to enlarge the bandwidth of the natural frequency. We constructed three models to study the effect of increasing the concentrated masses on increasing the bandwidth natural frequency. We used Finite...

A small amount of natural frequency deviation extremely decreases the output power. So, a multi-mass single harvester (bending harvester) was utilized to enlarge the bandwidth of the natural frequency. We constructed three models to study the effect of increasing the concentrated masses on increasing the bandwidth natural frequency. We used Finite...

This review article provides a detailed overview of the advanced applications of piezoelectric material in electrochemical processes. Energy harvesting, a potential topic, aims to transform ambient energy sources, including heat, light, and mechanical motion, into useful energy that would otherwise be wasted. This review focuses on an innovative an...

Monitoring the mass of liquid absorption in laminated composite structures, that have a direct contact surface with working liquid-like pipes, is very important in order to prevent the sudden collapse of the structures because of the degradations in strength and mechanical properties over time. An electrical capacitance sensor technique has been ap...

The topics of interest for publications include but are not limited to: 1. Advances in the design of energy harvesters, using FEM and hybrid methods; 2. Broadband energy harvester techniques; 3. Optimization techniques for piezoelectric energy harvesters; 4. Nonlinear-vibration-based piezoelectric energy harvesting; 5. Advances in materials for ene...

In this paper, rainfall droplet impact force is transformed into a measurable voltage signal output via the piezoelectric material direct effect utilized for sensing purposes. The motivating sensor is utilized to measure the peak impact forces of rainfall droplets for further analysis and processing. Constructing a sense for the impact force of rai...

Energy harvesting from piezoelectric materials is quite common and has been studied for the past few decades. But recently, there have been a lot of new advancements in harnessing energy via piezoelectric materials. In this regard, several studies were carried out in analytical chemistry. This paper provides a detailed review of different piezoelec...

Converting the wasted ambient vibration to electric power, using a piezoelectric energy harvester, is a promising strategy for powering a sensor network for medical and industrial applications. The designed harvester must satisfy the wideband natural frequency of ambient vibration. Convenvtional array harvester generates peak power at the cantile...

This paper introduces a multi-objective design mechanism to minimize both the initial and running costs of industrial robot arms. The goal of the design problem is to decide the type of material and physical dimensions of the robot arm to withstand high loads at vulnerable locations using stress analysis. Additionally, it selects the material archi...

Harvesting the wasted vibrations in the surroundings and converting these vibrations to voltage difference through the piezoelectric (PZT) effect, is a promising approach to power many industrial and medical sensor networks. Ambient vibrations often exist in a wideband frequency form, so it is recommended to propose a simple design that can operate...

Over the last two decades, several experimental and numerical studies have been performed in order to investigate the acoustic behavior of different muffler materials. However, there is a problem in which it is necessary to perform large, important, time-consuming calculations particularly if the muffler was made from advanced materials such as com...

Previous broadband energy harvester techniques met many challenges like output power with a sharp peak, small enhancement in bandwidth, and large dimensions and weights. This paper introduces the Automatic Resonance Tuning (ART) technique of two piezoelectric beams to manage these challenges. The energy harvester of two clamped beams automatically...

Earthquake-induced structural vibration is converted into an instant voltage signal via piezoelectric material for sensing purposes where it can be detected and read by a self-powered/self-sensing capabilities sensor located in remote and inaccessible areas. The motivating sensor is expected to wirelessly transmit vital information for monitoring p...

Energy harvesting from piezoelectric materials is quite common and has been studied for the past few decades, but, recently, there have been a lot of new advancements in harnessing electrical energy via piezoelectric materials. In this regard, several studies were carried out in electrochemistry and fluid flow. Furthermore, consideration of product...

The main drawback of energy harvesting using the piezoelectric direct effect is that the maximum electric power is generated at the fundamental resonance frequency. This can clearly be observed in the size and dimensions of the components of any particular energy harvester. In this paper, we are investigating a new proposed energy harvesting device...

The importance of energy harvesting is considered when harvesting the neglected ambient energy that graduated from different systems and dissipates around us, such as electromagnetic waves, heat, vibration, etc [...]

This paper studies the effect of tailoring the inertial and elastic forces on the flutter and the stability charac- teristics of the aircraft panels using copper patches that are placed at effective locations. The proposed panel is modeled as a multilayer thin composite panel. The equations of panel motion are derived based on Hamilton’s principl...

This paper studies the effect of tailoring the inertial and elastic forces on the flutter and the stability characteristics of the aircraft panels using copper patches that are placed at effective locations. The proposed panel is modeled as a multilayer thin composite panel. The equations of panel motion are derived based on Hamilton’s principle. T...

Conventional Piezoelectric energy harvesters exhibit only a sharp peak power at the natural frequency (very small bandwidth). These harvesters introduce low efficiency in harvesting ambient vibrations that cover wideband natural frequency. We propose three graded cantilevers with six masses to broaden the bandwidth natural frequency. These cantilev...

The piezoelectric energy harvester efficiency depends on optimizing the cantilever geometry and tuning its natural frequency with vibration source frequency. Moreover, the effect of harvester parameters on natural frequency is vital in tuning the resonance frequency. So, a COMSOL Multi-physics finite element analysis, Eigen frequency study and anal...

In the current research, optimal locations on aircraft panels are thickened to delay the flutter occurrence. A standard square isotropic Aluminum panel of 12 Â 12 in. is considered. In formulating the model, the Kirchhoff-Love hypothesis and the Von-Karman nonlinear strain-displacement relations are applied. The quasi-steady first-order piston aero...

Targeting the frequency of a vibrating source efficiently is the main aim of this research. Also, using an intelligent optimization methodology to improve the power output per unit volume of the harvester is considered. Two case studies of engine vibration and car suspension energy harvesting were investigated. The two optimization methodologies we...

In this paper, to choose the optimum aspect ratio in the Finite element formulation of aircraft panel flutter simulation and damping, a standard square panel of embedded piezoelectric (PZT) actuator is investigated. The model formulation is based on the first-order shear deformation theory for laminated panel and the Von-Karman large deflection str...

In the current investigation; an ad-hoc iterative methodology is proposed to select the optimum location and area of the piezoelectric actuator for damping of panel flutter. The finite element formulation of the equations of motion of the fluttering panel is obtained using the four node Bogner Fox Schmit (BFS) element. The electrical degree of free...