Abdellatif Imad

Bio: Abdellatif Imad is an academic researcher from Lille University of Science and Technology. The author has contributed to research in topics: Ballistic impact & Finite element method. The author has an hindex of 29, co-authored 123 publications receiving 2416 citations. Previous affiliations of Abdellatif Imad include École Polytechnique & Centre national de la recherche scientifique.

Mechanical, microstructural and fracture properties of dissimilar welds produced by friction stir welding of AZ31B and Al6061

Abstract: Friction stir welding (FSW) has been used for joining AZ31B magnesium alloy and Al 6061-T6 aluminum alloy sheets. In this regard, the current work aims to study the mechanical, microstructural and fracture properties of dissimilar FSW welds obtained by evolving the tool rotation and translation speeds. The dissimilar welds microstructure and mechanical properties are evaluated and correlated with the FSW parameters to obtain the optimum weld conditions. The results showed that placing aluminum on the advancing side of the weld resulted in better quality welds. The evaluation of the microhardness along the joint section showed values evolving between the microhardness values of the base metals (Al and Mg). A discontinuity in the microhardness values, attributed to the intermetallic compounds (IMC) present, was observed at the weld interface between Mg and Al sheets. The room temperature tensile testing of the weld showed weld joint efficiency between 18% and 55% and at higher temperatures (200 °C) joint efficiency was observed to be between 58% and 78%. The specimen showed brittle behavior under tensile testing, and the specimen fracture occurred along the weld joint. The specimen fracture seems to have initiated in the brittle Mg2Al3 and Mg17Al12 IMCs formed between the welded sheets.

A Review on Natural Fiber Reinforced Polymer Composite and Its Applications

Abstract: Natural fibers are getting attention from researchers and academician to utilize in polymer composites due to their ecofriendly nature and sustainability. The aim of this review article is to provide a comprehensive review of the foremost appropriate as well as widely used natural fiber reinforced polymer composites (NFPCs) and their applications. In addition, it presents summary of various surface treatments applied to natural fibers and their effect on NFPCs properties. The properties of NFPCs vary with fiber type and fiber source as well as fiber structure. The effects of various chemical treatments on the mechanical and thermal properties of natural fibers reinforcements thermosetting and thermoplastics composites were studied. A number of drawbacks of NFPCs like higher water absorption, inferior fire resistance, and lower mechanical properties limited its applications. Impacts of chemical treatment on the water absorption, tribology, viscoelastic behavior, relaxation behavior, energy absorption flames retardancy, and biodegradability properties of NFPCs were also highlighted. The applications of NFPCs in automobile and construction industry and other applications are demonstrated. It concluded that chemical treatment of the natural fiber improved adhesion between the fiber surface and the polymer matrix which ultimately enhanced physicomechanical and thermochemical properties of the NFPCs.

Natural Fibers as Sustainable and Renewable Resource for Development of Eco-friendly Composites: A Comprehensive Review

Abstract: The increase in awareness of the damage caused by synthetic materials on the environment has led to the development of eco-friendly materials. The researchers have shown a lot of interest in developing such materials which can replace the synthetic materials. As a result, there is an increase in demand for commercial use of the natural fiber-based composites in recent years for various industrial sectors. Natural fibers are sustainable materials which are easily available in nature and have advantages like low-cost, lightweight, renewability, biodegradability and high specific properties. The sustainability of the natural fiber-based composite materials has led to upsurge its applications in various manufacturing sectors. In this paper, we have reviewed the different sources of natural fibers, their properties, modification of natural fibers, the effect of treatments on natural fibers, etc. We also summarize the major applications of natural fibers and their effective use as reinforcement for polymer composite materials.

A Review: Natural Fiber Composites Selection in View of Mechanical, Light Weight, and Economic Properties

Abstract: In this study, the properties and application of natural fiber composites in automobile industries are discussed. Natural fibers are replacing the synthetic fibers in the various parts of automobiles due to their lightweight, low-cost, and environmental aspects. For centuries, natural fibers have been used for making baskets, clothing, and ropes. Now the trend is changing and natural fibers such as: jute, hemp, flax, and sisal fibers are making their ways especially into the components of automobiles. Comparisons of material indices for beam and panel structures were made to investigate the possibility of using natural fiber composites instead of conventional and non-conventional materials.