Ala'aldin Alafaghani

Ala'aldin Alafaghani
University of California, Merced | UCM · Department of Mechanical Engineering

Doctor of Philosophy

About

20
Publications
18,546
Reads
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601
Citations
Citations since 2017
20 Research Items
601 Citations
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2017201820192020202120222023050100150
2017201820192020202120222023050100150
Introduction
Ala'aldin Alafaghani currently works at the Department of Mechanical Engineering, University of California, Merced. Ala'aldin does research in Materials Science, Mathematical Physics and Mechanics. Their most recent publication is 'Effect of manufacturing parameters on the microstructure and mechanical properties of metal laser sintering parts of precipitate hardenable metals'.

Publications

Publications (20)
Conference Paper
Full-text available
The sustainability of sheet metal parts often has multiple facets depending on the phase under consideration. The work presented in this paper focuses on cradle-to-gate Life Cycle Analysis (LCA) of the Origami-based Sheet Metal (OSM) folding process. OSM is an emerging fabrication technique that utilizes the principle of folding sheet metal parts b...
Conference Paper
Full-text available
The sustainability of sheet metal parts often has multiple facets depending on the phase under consideration. The work presented in this paper focuses on cradle-to-gate Life Cycle Analysis (LCA) of the Origami-based Sheet Metal (OSM) folding process. OSM is an emerging fabrication technique that utilizes the principle of folding sheet metal parts b...
Article
Full-text available
The recent development of metal additive manufacturing provides a new approach to fabricating complex IN718 parts with minimal machining. However, additively manufactured IN718 parts suffer from anisotropic mechanical properties, and are usually inferior to conventionally produced parts. This is especially noticeable under dynamic loading condition...
Conference Paper
Due to the layering nature of additive manufacturing, additively manufactured parts exhibit a unique microstructure and are more susceptible to defects. Post-processing heat treatments of additively manufactured parts have shown great promise in improving their quality and reliability. However, the previous studies presented here demonstrated that...
Article
Data-driven techniques are used to predict the transformation temperatures (TTs) of NiTiHf shape memory alloy. A machine learning (ML) approach is used to overcome the high-dimensional dependency of NiTiHf TTs on numerous factors, as well as the lack of fully known governing physics. The elemental composition, thermal treatments, and post-processin...
Article
Full-text available
Origami-based sheet metal (OSM) bending is a promising new die-free folding technique for sheet metal. OSM bending principle is based on deforming the material along a pre-defined fold line, which is determined using material discontinuity (MD) produced by laser or waterjet cutting. The objective of this work is to study and evaluate the fracture i...
Article
Origami-based sheet metal (OSM) bending uses the origami concept to form a three-dimensional (3D) structures from a two-dimensional (2D) sheet by a series of bending operation. The OSM bending relies on a material discontinuity (MD) to perform the bending operation where the MDs are subjected to tension and shear load. Even though the OSM bending i...
Article
Full-text available
Modeling the influence of the processing parameters of fused filament fabrication (FFF) on the mechanical properties of FFF fabricated parts is a challenging task due to the complex dynamics and the large number of factors that affect the quality of the fabricated parts. Therefore, optimizing the mechanical properties of parts fabricated using FFF...
Preprint
Full-text available
Origami-based sheet metal (OSM) bending is a promising new die-free folding technique for sheet metal. OSM bending principle is based on deforming the material along a pre-defined fold line, which is determined using material discontinuity (MD) produced by laser or waterjet cutting. The objective of this work is to study and evaluate the fracture i...
Preprint
Full-text available
Inconel 718 (IN718) is a superalloy commonly used in aerospace, turbomachinery, and applications with extreme conditions due to its creep and corrosion resistance and high strength and hardness at a wide range of temperatures. The recent development of metal additive manufacturing offers a new approach to fabricate complex IN718 parts with minimal...
Conference Paper
Full-text available
Optimizing the processing parameters of fused deposition modeling is a challenging task due to the significant number of factors that influence the quality of the fabricated parts. Therefore, optimizing the dimensional accuracy, surface roughness, or mechanical properties usually requires a considerable amount of test samples. In the presented work...
Article
Full-text available
In this work, we present a model for origami-based sheet metal (OSM) folding that can predict the required bending force. OSM folding is enabled by introducing bending features along the bending line, named material discontinuity (MD). Firstly, the introduced analysis in this work developed a bending setup for OSM that does not require a die then i...
Article
Full-text available
15-5PH parts that are fabricated using direct metal laser sintering (DMLS) has shown mechanical properties comparable to conventionally manufactured parts. However, DMLS-fabricated 15-5PH parts have shown high anisotropy in their mechanical properties due to the layering nature of additive manufacturing process. In addition, the fatigue life and st...
Article
Full-text available
The presented work describes the development of an engineering capstone course with multidisciplinary design projects and students’ teams. The course is offered for senior-level engineering students of four majors: those are bio-, environmental, materials, and mechanical engineering. In addition, engineering students can have minors in computer sci...
Conference Paper
Direct Metal Laser Sintering (DMLS) is an additive manufacturing process where metal parts are created layer by layer. Mechanical properties of the final product can vary significantly based on processing parameters. In traditional processes, such effects of processing parameters on mechanical properties are well-established. However, additive manu...
Article
Full-text available
Additive manufacturing (AM) started as a rapid prototyping (RP) technology to aid in visualizing and validating designs in the design process. However, with the recent improvements in metal AM parts, functional parts can be manufactured using laser-based AM. Currently, metal AM parts have comparable mechanical properties to traditional manufacturin...
Article
Full-text available
Fused Deposition Modeling (FDM) is an Additive Manufacturing (AM) technique that fabricates parts layer upon layer. The recent development of AM technologies is driving FDM from rapid prototyping to rapid manufacturing. However, building end-user functional parts using FDM proved to be a challenging task, which is due to having many processing para...
Article
Full-text available
The Additive Manufacturing (AM) technology initially was developed as a rapid prototyping tool for visualization and validation of designs. The recent development of AM technologies, such as Fused Deposition Modelling (FDM), is driving it from rapid prototyping to rapid manufacturing. However, building end-user functional parts using FDM proved to...
Article
Full-text available
Additive Manufacturing (AM) technologies have progressed in the past few years and many of them are now capable of producing functional parts instead of mere prototypes. AM provides a multitude of benefits, especially in design freedom. However, it still lacks industrial relevance because of the absence of comprehensive design rules for AM. Althoug...

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