Noureddine Barka

Université du Québec à Rimouski UQAR | uqar · Département de Mathématiques, Informatique et Génie

In this study, a numerical model that employs smoothed particle hydrodynamics (SPH) is presented to simulate the temperature distribution and measure the weld pool surface area of disk laser-welded overlap aluminum sheets. This simulation technique is well suited for performing three-dimensional calculations with high spatial resolution while keepi...

Rapid solidification during Additive Manufacturing (AM) of H13 steel leads to mesoscopic segregation of alloying elements, which are prone to oxidation during post-AM heat treatment. The presence of oxide particles significantly reduces the tensile strength of powder bed fusion-ed (PBF-ed) H13 steel. The size and distribution of the oxides depend o...

Laser welding offers distinct advantages over traditional methods: less heat impact, no filler metal needed, and strong weld penetration. It is efficient and cost-effective, perfect for joining materials like the stainless steel 301LN, and ideal for industries addressing climate change. This study delves into the impact of various operating paramet...

This study investigates the effect of laser treatment parameters on the tensile behavior of H13 tool steel in both quenched and tempered conditions. The effects of varying laser parameters on ultimate tensile strength and elongation at fracture which is the aim of this research were explored by employing a bionic unit to apply laser treatment with...

This study delves into the fracture behavior of additively manufactured H13 tool steel, particularly focusing on its response to tensile loading at elevated temperatures, crucial for its application in plastic injection molding. Given the material's working temperature in plastic injection molding processes, understanding its mechanical behavior at...

This study explores the optimization of metal additive manufacturing (AM), refining the selective laser melting (SLM) process to maximize the performance of 17-4 PH stainless steel. Known for its strength and corrosion resistance, this precipitation-hardening steel is widely used in aerospace, automotive, biomedical, and tooling sectors where relia...

In the domain of additive manufacturing, H13 tool steel held potential but faced challenges due to prevalent manufacturing defects such as oxidation and porosity. This investigation meticulously studied the effect of volumetric energy density (VED) on these defects. Employing rigorous methodologies encompassing microhardness pattern analysis, tensi...

This project targets the improvement of the laser welding process with an approach to joining aluminum alloys for drilling applications, especially for dissimilar alloy combinations. In ultra-deep good drilling engineering, aluminum alloy drill tubes are the optimum material system for the drill string because of their low density, high specific st...

This study investigates the effects of laser welding on the microstructural and chemical properties of AlSI 1018 and 301L stainless steel overlap joints. The research focuses on understanding how varying laser welding depths influence the diffusion of alloying elements between the two materials and the resulting changes in microhardness. Two distin...

The demand for high-speed steel (HSS) in tooling applications, especially in industries requiring high thermal shock resistance like injection molding and die casting, continues to grow. HSS's high toughness and extended mold life make it ideal for these applications. Additive manufacturing (AM) of metals has introduced conformal cooling channels (...

In modern industrial settings, the enhancement of laser welding efficiency and quality is deemed critical. This paper presents an approach that integrates the Internet of Things (IoT) and real-time monitoring systems to address porosity in laser welding. A system was developed employing acoustic, vibration, and thermal sensors to collect real-time...

Selective laser melting (SLM) is an advanced additive manufacturing technology that creates complex geometries that were previously impossible to produce. However, for industrial applications that require the highest standards, the performance of SLM-manufactured metal components still needs to be improved. Therefore, post-processing heat treatment...

This project aims to evaluate the impact of the lightness of lattice structures designed by additive manufacturing on their mechanical performance. Through the use of SLM (Selective Laser Melting) technology, various maraging steel mesh configurations were produced and analyzed. Comparing the densities between the CAD designs and the manufactured s...

Our research explores the limits of metal additive manufacturing (FAM), refining the laser powder bed fusion (LPBF) process to maximize the performance of 17-4 PH steel. Known for its robustness and corrosion resistance, this steel is a pillar in the aerospace, biomedical and tooling sectors where reliability is essential. Our systematic study, con...

This study uses a numerical model based on the smoothed particle (SPH) method to simulate the laser welding process of 6061-T6 aluminum sheets. It examines how the speed and power of the laser beam influence the dimensions and topography of the weld pool, as well as its volume. The numerical results agree closely with the experimental data

Problématique Les matériaux hétérogènes peuvent former des composés intermétalliques fragiles lors du soudage, ce qui compromet la résistance et la ductilité de la jonction. La différence des propriétés physiques, telles que les points de fusion et les coefficients de dilatation thermique, peut entraîner des défauts de jointure ou des fissurations....

Since laser beam welding’s inception, this process has established itself as a high-quality fusion joining technology, exhibiting tremendous growth in a broad range of industries. In this study, fiber laser beam welding with 3-kW power is used for dissimilar joining of 1.6-mm-thick AA7075 and Ti–6Al–4 V sheets with an Ag interlayer. It is worth not...

Creep failure poses a potential risk in dissimilar welded joints between aluminum and titanium alloys, potentially compromising the joint's integrity. This study utilizes laser beam welding (LBW) to achieve dissimilar joining of AA7075 and Ti6Al4V by incorporating an Ag interlayer. The role of Ag interlayer for dissimilar joining of AA7075 and Ti6A...

Laser welding of AA7075 and Ti6Al4V, two very different aerospace alloys, was performed with a copper (Cu) interlayer to avoid the brittle Ti–Al intermetallics. The joint was formed owing to the diffusion of Cu into the AA7075 alloy and limited diffusion in Ti6Al4V alloy, followed by eutectic formation at the AA7075/Cu interface. Microstructural an...

Metal additive manufacturing is revolutionizing how we produce and use materials. Selective Laser Melting (SLM) is one of the most popular additive manufacturing techniques for creating high-performance metal components. Stainless Steel is preferred for additive manufacturing due to its powder form availability, low cost, mechanical properties, and...

AA5052 is a widely used aluminum alloy in the automotive industry due to its excellent weldability, mechanical properties, and corrosion resistance. This study aims to optimize the parameters for wobbling overlap laser welding of dissimilar thickness aluminum AA5052-H32 sheets. The investigated parameters include laser power, travel speed, focal po...

This work is an experimental parametric study that employs the design of experiments methodology to investigate the influence of printing parameters on the surface quality of 316L stainless steel parts manufactured through the SLM process. To achieve this objective, a full factorial plan consisting of three factors at three levels is used. The fact...

This paper introduces a novel techno-economic feasibility analysis of energy management utilizing the Homer software v3.14.5 environment for an independent hybrid microgrid. This study focuses on a school with twelve classes, classifying the electrical components of the total load into three priority profiles: green, orange, and red. The developed...

The current study, embedded in the vast evolving context of Industry 4.0, delves into the exploration and exploitation of laser welding technology for the fabrication of aluminum structures. Given the growing importance of automation and digitization in industrial processes, the issue of monitoring defects in laser-welded aluminum structures become...

H13 tool steel is used in hot work tooling applications where favorable mechanical properties and surface quality are required. This material has high hardness at elevated temperatures, high wear resistance, and good toughness. The potential for complex mold designs and conformal cooling channels using additive manufacturing technology makes it an...

Selective laser melting (SLM) process produces high-performance metal parts using a layer-by-layer technique involving various influential factors. Nevertheless, there is a research gap in predictive models for the performance of SLM-processed 316L stainless steel, specifically concerning the effect of process parameters and their interactions. To...

Metal additive manufacturing (AM) has become a widely adopted technique in various industries, owing to its flexible free-form manufacturing capabilities. M300 steel is widely applicable in industrial applications due to its exceptional mechanical properties, including superior strength and toughness. This study explores the effects of three select...

Recently, there has been an increase in the use of laser beam welding of mild steel in various industries, including petroleum refineries, power plants, pharmaceuticals, and even residential areas. This research paper focuses on studying the effects of laser welding process parameters, such as laser power and welding speed, on the tensile strength...

In the manufacturing sector, the ability to predict key performance indicators (KPIs) such as Overall Equipment Efficiency (OEE) is crucial for process optimization and informed decision-making. Although several machine learning methods have been employed to forecast KPIs, their real-time predictive capabilities remain underutilized. This paper pre...

The aim of this review paper is a comprehensive investigation of the laser welding and forming process as two critical parts of smart manufacturing and welding intelligent systems in Industry 4.0, especially for forming Aluminum Laser Welded Blanks (ALWB). In the modern era, manufacturing companies and their business models have a major impact on e...

This study presents a numerical investigation of the thermal behavior of 316L stainless steel parts fabricated by the Selective Laser Melting process (SLM). The objective of this study is to develop a thermal model to predict the spatio-temporal temperature distribution during the SLM process. The temperature evolution according time is determined...

A release device for fishing cable may have a first tube unit defining an inner cavity, the first tube unit configured to be connected to a fishing cable. a piston unit in the inner cavity of the first tube unit to separate the inner cavity in a first chamber and a second chamber, with a fluid passage between the first chamber and the second chambe...

Recently, additive manufacturing (AM) has demonstrated strong potential in critical industrial applications requiring high-performance mechanical behavior. The advantage of AM over subtractive methods lies in the flexibility of the manufacturer in producing complex geometries. The method is recommended for building complex conformal cooling channel...

The present study seeks to fill the research gap regarding the correlation between crack-tip opening displacement (CTOD) and banded microstructures of high-strength low-alloy steel. For this purpose, a distinct casting procedure and thermo-mechanical controlled process route were implemented to produce an API 5LX60 MS linepipe steel plate free of b...

The growing implementation of aluminum alloys in industry has focused interest on studying transformation processes such as laser welding. This process generates different kinds of signals that can be monitored and used to evaluate it and make a quality analysis of the final product. Internal defects that are difficult to detect, such as porosity,...

The detection and localization of small and tiny defects on high-resolution images is considered one of the main challenges in the field of computer vision. In the manufacturing industry, the production speed and cycle time are considered the major target of a production process. For such reason, automated quality detection is getting even more com...

This study explores the application of machine learning algorithms for supporting complex product manufacturing quality through a focus on quality assurance and control. We aim to take advantage of ML technics to solve one of the complex manufacturing problems of the tempered glass manufacturing industry as a first attempt to automate product quali...

Nowadays, computer-aided inspection (CAI) is used to cope with increasing complexity in part manufacturing and the difficulty of physical access to certain workplaces. Therefore, manufacturing companies adopt automated CAI methods to increase the efficiency of the control quality activities. This study aims to capture the current state of the art o...

In modern Industrial and manufacturing systems, digitalization and sustainability are significant areas which are affecting all equipment of the manufacturing chain. In the fourth industrial revolution era (industry 4.0), maintains play a key role in sustainable manufacturing and production system. Meanwhile, maintenance 4.0 as a part of industry 4...

We developed a self-optimizing decision system that dynamically minimizes the overall energy consumption of an industrial process. Our model is based on a deep reinforcement learning (DRL) framework, adopting three reinforcement learning methods, namely: deep Q-network (DQN), proximal policy optimization (PPO), and advantage actor–critic (A2C) algo...

In the present paper, continuous Ytterbium Laser Systems (YLS) fiber laser hardening of cylindrical AISI 4340 steel specimens was studied using experimental and statistical analyses. Three laser parameters, namely laser power, laser feed speed, and sample rotation speed were selected to evaluate their influence on the depth of the hardened zone and...

This study introduce the application of machine learning algorithms for supporting the manufacturing quality control of a complex process as an alternative for the destructive testing methodologies. The choice of this application field was motivated by the lack of a robust engineering technique to assess the production quality in real time, this ar...

In the present paper, continuous Ytterbium Laser Systems (YLS) fiber laser hardening of cylindrical AISI 4340 steel specimens was studied using experimental and statistical analyses. Three laser parameters, namely laser power, laser feed speed, and sample rotation speed were selected to evaluate their influence on the depth of the hardened zone and...

This study assesses the effects of laser power, welding speed and amplitude on oscillated laser beam welding using a complete factorial design of three factors and two level followed by an analysis of variance (ANOVA). The result reveals that the amplitude has the most influential effect followed by the welding speed and the laser power. An increas...

This paper aims at investigating the effect of laser welding parameters on the hardness profile, using hardness mapping analyses, and welding geometry of galvanized steel plates. Hardness distribution and geometry deflection of galvanized welded thin plates are commonly applied in fields where weld quality is of utmost importance. Due to the weldin...

The wobbling technique which consists of oscillating the laser beam at high frequency and in a specific pattern is an innovative way to enhance the quality of weld. The wobbling widens the area covered by the laser beam resulting in a wider seam that provides improved mechanical properties. The study investigated the effect of parameters such as th...

Aluminum alloys are increasingly replacing steel in marine, automotive and aerospace industries to reduce the weight of components, which leads to gains in terms of energy savings. The 5xxx series is an alloy characterized by its low density and high corrosion resistance. In this work oscillating laser welding was used to join a 2 mm thick AA5052-H...

In the present paper, continuous Nd:YAG laser hardening of cylindrical AISI 4340 steel specimens was studied using experimental and statistical analyses. Three Laser parameters namely laser power, laser feed speed, and sample rotation speed were selected to evaluate their influence on the depth of the hardened zone, and the maximum surface hardness...

In this study, welding and forming defects in a deep drawing process of laser-welded blanks (LWBs) are investigated both experimentally and numerically. LWB is used to achieve minimum distortion and desirable weld quality. However, some unfavorable residual stresses are added throughout the forming operations, which decrease the lifetime of LWBs. T...

Nowadays, laser-welded blanks (LWBs) are an advanced approach for automobile companies to reduce the weight of their products using sheets with different thicknesses, materials, strengths, and coatings, joined by different welding methods. In this current study, experimental and numerical approaches are used to tune the parameter effects and optimi...

Electropolishing (EP) is a reliable post-processing method of the drilled metals for achieving a high-quality surface finish with an appropriate material removal rate. This process has many applications due to its advantages such as improving the surface quality by removing the surface peaks on a micro-scale. The aim of most attempts on this proces...

This paper presents a new approach in laser welding of Al-5052 and heat Al-6061 aluminum alloys, which are challenging materials for a good laser welding quality. The process consists of applying very small size of 0.1 mm to provide a high density of power that aims at imposing a high amount of heat that is required for aluminum alloys, simultaneou...

Induction hardening serves as one of the best mass production processes used recently due to its ability to quickly generate high-intensity heat in a well-defined location of the part. Numerous advantages of this method make it a reliable technique to produce a thin martensite layer on the part surface that has compressive residual stresses. In thi...

As medical equipment has become more complex and expensive, the maintenance of this equipment requires special attention to improve outcomes and reduce costs notably in the Small Hospital and Health Care Organizations (SHHOC). This research explores how SHHOC can improve maintenance management according to the maintenance employees’ views, and what...

This paper was developed to study a 3D model of a sprocket sample heated by the simultaneous dual-frequency induction heating process. The numerical simulation efforts based on tightly coupled electromagnetism and heat transfer using COMSOL Multiphysics software considering the material properties and the machine parameters, in order to investigate...

In this study, distortion mapping (deformation or warping) of aluminum Laser Welded Blanks (LWBs) is investigated during an automated forming process. Here, a novel approach of automated and real-time inspection is presented which enhances final product quality, reduces lead time, and increases manufacturing cadence while reducing product cost. As...

This paper aims at investigating the effect of laser welding parameters on the hardness profile, using hardness mapping analyses, and welding geometry of galvanized steel plates. Hardness distribution and geometry deflection of galvanized welded thin plates are commonly applied in fields where the weld quality is of utmost importance. Due to the we...

Induction hardening serves as one of the best mass production processes used recently due to its ability to quickly generating high-intensity heat in a well-defined location of the part. Numerous advantages of this method make it a reliable technique to produce a thin martensite layer on the part surface that has compressive residual stresses. In t...

Induction hardening, a promising approach for selective hardening of metal parts, is widely used for surface hardening, where a hard surface is required alongside a tough core. Regarding the complexity of this proces