Author
Mahdi Arian Nik
Bio: Mahdi Arian Nik is an academic researcher from McGill University. The author has contributed to research in topics: Composite laminates & Stiffness. The author has an hindex of 6, co-authored 8 publications receiving 391 citations.
Papers
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TL;DR: In this paper, the authors investigate how the parameters governing the formation of defects impact the set of optimal solutions for a multi-objective optimization problem, where in-plane stiffness and buckling load are simultaneously maximized.
131 citations
TL;DR: In this paper, a composite laminate with curvilinear fiber paths is designed to maximize simultaneously its in-plane stiffness and buckling load, and a defect layer is proposed to characterize the change in properties of each layer in the composite laminates that results from the occurrence of gaps and overlaps.
120 citations
TL;DR: In this paper, the problem of simultaneous optimization of stiffness and buckling load of a composite laminate plate with curvilinear fiber paths is formulated and solved through a surrogate-based optimization algorithm capable of finding the set of optimum Pareto solutions.
109 citations
TL;DR: In this paper, a set of metamodeling techniques for the design optimization of composite laminates with variable stiffness is examined. And the results show that the most accurate and robust models in exploring the design space are Kriging and Radial Basis Functions.
86 citations
TL;DR: In this article, the Curvilinear Variable Stiffness (CVS) 3D printing technology was used to improve the tensile strength and failure strain of the manufactured specimens per ASTM D5766.
Abstract: Fused Filament Fabrication (FFF), one of the most popular processes of 3D printing, offers flexibility in manufacturing and introduces anisotropic properties to the final parts. With the use of Curvilinear Variable Stiffness (CVS) 3D printing technology, mechanical properties of the manufactured products can be further improved and optimized. In this work, we demonstrate how CVS design can improve open-hole tensile strength and failure strain of the manufactured specimens per ASTM D5766. In addition, the ratio of the specimen width to the hole diameter is considered as a design parameter and investigated. It is found that CVS design improves the failure strength by 38.0% for a larger hole diameter configuration (from 48.0 MPa to 66.2 MPa), while the improvement in failure strain (from 0.0125 mm/mm to 0.0130 mm/mm) is limited to only 4.0%. On the other hand, for a smaller hole diameter case, a substantial improvement of 52.5% in failure strain is obtained with the use of CVS design (from 0.0141 mm/mm to 0.0215 mm/mm), while 16.7% improvement in failure stress (76.0 MPa to 88.6 MPa) is less pronounced.
32 citations
Cited by
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12 Nov 1971
TL;DR: In this article, the primary objective of the program was the determination of the stress and strain fields in those local regions adjacent to the particulate fillers in matrix composites, and subsequent attainment of critical values of stresses and strains can be incorporated in an appropriate condition of failure.
Abstract: : The primary objective of the program was the determination of the stress and strain fields in those local regions adjacent to the particulate fillers in matrix composites Not only is the general mechanical behavior best understood on this microstructural level, but subsequent attainment of critical values of stresses and strains can be incorporated in an appropriate condition of failure (Author)
155 citations
TL;DR: A review on works that investigate the mechanical behaviour of variable stiffness composite laminated panels is carried out in this article, where the review mostly focuses on buckling, failure and vibrati...
Abstract: A review on works that investigate the mechanical behaviour of variable stiffness composite laminated panels is carried out in this paper. The review mostly focuses on buckling, failure and vibrati...
139 citations
TL;DR: In this paper, the authors investigate how the parameters governing the formation of defects impact the set of optimal solutions for a multi-objective optimization problem, where in-plane stiffness and buckling load are simultaneously maximized.
131 citations
TL;DR: Three key processing parameters in AFP, specifically consolidation force, lay-up speed and curing/melting temperature are attempted elaborately and the discussions on in-situ process monitoring and Machine Learning based predictive models for AFP based composites are presented.
126 citations
TL;DR: In this article, the authors present a concise state-of-the-art review along with an exhaustive comparative investigation on surrogate models for critical comparative assessment of uncertainty in natural frequencies of composite plates on the basis of computational efficiency and accuracy.
123 citations