- Natural Fiber Reinforced Composites
- Mechanical Behavior of Composites
- Innovative concrete reinforcement materials
- Tribology and Wear Analysis
- 3D IC and TSV technologies
- Semiconductor materials and devices
- Composite Material Mechanics
- Additive Manufacturing and 3D Printing Technologies
- Electronic Packaging and Soldering Technologies
- Polymer crystallization and properties
- GaN-based semiconductor devices and materials
- Advancements in Semiconductor Devices and Circuit Design
- Structural Behavior of Reinforced Concrete
- Innovations in Concrete and Construction Materials
- Intermetallics and Advanced Alloy Properties
- Manufacturing Process and Optimization
- Electric Vehicles and Infrastructure
- Advanced Battery Technologies Research
- Smart Grid Energy Management
- Asphalt Pavement Performance Evaluation
- Material Properties and Applications
- Advanced Antenna and Metasurface Technologies
- Electromagnetic wave absorption materials
- Epoxy Resin Curing Processes
- Advanced Welding Techniques Analysis
Electronics and Telecommunications Research Institute
2025
Chung-Ang University
2016-2025
Sun Moon University
2022-2024
This study evaluates the mechanical strength of 3D-printed objects composite material. The material considered in this comprises onyx as base with glass fiber and carbon internal reinforcements. 3D printing using materials generally involves laminating reinforcements form layers within printed part. To analyze effect such on parts, specimens were prepared by varying number arrangement conditions reinforcement. analysis shows that tensile increases reinforcement due to fibers longitudinal...
In this study, preliminary simulations were performed to manufacture thermoplastic composites that can be processed by injection. For analysis, a basalt particulate–polymer composite model was manufactured and its elastic modulus, shear thermal expansion coefficient, conductivity predicted using finite-element analysis (FEA) micromechanics. Polypropylene (PP), polyamide 6, 66, (PA) employed as the polymer matrix, with variations in their properties investigated based on volume fraction of...
In this study, to improve the mechanical properties of polypropylene (PP) with objective developing a composite ultra-high-molecular-weight polyethylene (UHMWPE) as reinforcement, material were investigated via numerical analysis and finite element (FEA). Based on mathematical approach, modulus elasticity, shear modulus, Poisson’s ratio calculated using model, and, through FEA application homogenization method, elastic predicted, results comparatively analyzed. future, it will be necessary...
In this study, we calculated the elastic properties of polypropylene composites mixed with ultrahigh-molecular-weight polyethylene (UHMWPE) fibers. We applied micromechanics models that use numerical analysis, conducted finite element analysis using homogenization method, and comparatively analyzed characteristics (PP) containing UHMWPE fibers as reinforcement. The results demonstrate improved volume fraction fiber increased. It was confirmed had anisotropic due to shape addition, it is...
This study proposes an electromagnetic shielding material sprayed with silver-coated copper powder (core-shell powder). The properties of the are analyzed in details section. Cross-sectional observation and sheet resistance measurement were used to determine thickness electrical conductivity layer, which was generated by spray-coating; this aided confirming uniformity coating film. results indicate that interference effectiveness increases when paste paste) is as rather than conventional...
This study evaluated the properties of 3D-printed Onyx-fiberglass composites. These composites were with zero, one, two, three, and four layers fiberglass. Ten samples each configuration printed for tensile flexural tests. The average strength Onyx specimens was calculated to be 44.79 MPa, which increased linearly by approximately 20-25 MPa additional fiberglass layer. elastic moduli from micromechanics models compared experimental values obtained modulus more significantly than model...
This study proposes an isotropic composite material with enhanced elastic properties based on a reinforcement mechanism using ultra-high molecular weight polyethylene (UHMWPE) spherical molecules. Elastic are predicted through finite element analysis by randomly mixing UHMWPE polypropylene (PP) as matrix. The change in of the is calculated for volume fractions from 10 to 70%. Furthermore, results compared and analyzed numerical approach. show that physical excellent UHMWPE, confirm it...
This study comparatively analyzed the behavior of elastic properties by aspect ratio ultra-high molecular weight polyethylene (UHMWPE) fibers that are added when creating a composite material polypropylene and UHMWPE. The volume fraction (VF) UHMWPE to was fixed at 5%. were lumped for analysis according oriented on matrix; they using Halpin–Tsai model, which involves theoretical approach finite element based homogenization method. Finite performed fiber ratios 0.2 30 via technique ANSYS...
In this study, the characteristics of a composite material composed polypropylene (PP) and ultrahigh molecular weight polyethylene (UHMWPE) are investigated. The elastic properties PP/UHMWPE short UHMWPE fibers with low aspect ratio long high compared analyzed. addition, materials calculated via finite element analysis Halpin–Tsai model by changing volume fraction fibers. results show that when used, modulus elasticity based on consistent those obtained using model, although fiber increases....
The elastic properties of polypropylene (PP) and ultra-high molecular weight polyethylene (UHMWPE) textile composites were predicted using finite element analysis (FEA). A three-dimensional (3D) model was generated by introducing a cloth made from UHMWPE fibers into PP matrix. Regarding the weaving type, reinforcement fabricated replicating plain twill-woven materials. Additionally, compared evaluated varying volume fraction in 45% to 75%. modulus containing textiles prepared method greater...
This study uses the finite element method and numerical analysis to develop an eco-friendly composite material with shielding capabilities. A preliminary was performed predict mechanical properties of material. Polyethylene terephthalate aluminum powder (AP) were selected as matrix enhancer, respectively. The particles AP are spherical, a diameter 1 μm. Material investigated volume fraction (VF) increased from 5-70%. FEM results show that physical for VFs improve by up 40%, but there is no...
The bonding characteristics of MLCCs (multi layer ceramic capacitor, C1608) lead-free solder (SAC305) joints were evaluated through thermal shock test (<TEX>$-40^{\circ}C{\sim}125^{\circ}C$</TEX>, total 1,800 cycle). After the test, IMCs( intermetallic compounds) growth and cracks verified, also shear strengths measured for degradation joints. In addition, stress distributions at analyzed to compare changes before after according by FEA (finite elements analysis). We considered effects IMCs...
This study examines the use of meta-heuristic algorithms, specifically particle swarm optimization and genetic for optimizing thermal systems, addressing a research gap on their efficacy in larger systems. Utilizing MATLAB’s Simulink Simscape, initially targets an electric vehicle system model, emphasizing Li-ion battery pack associated cooling components, like chillers, pumps, plates, during operation. One consideration is glycerol–water mixture chiller pump, which demands optimal control...
In this study, the bonding characteristics of epoxy solder joints for manufacture highly reliable medical electronic devices were investigated. A total 2000 cycles thermal shock tests performed by simulating heat generation on specimens manufactured using eutectic solders (SAC305 and Sn58Bi) (SACE Sn58BiE). After shock, formation internal cracking owing to difference in expansion coefficients dissimilar material deterioration properties was analyzed. Consequently, case solder, cured outside...