A5068066993- Mechanical Behavior of Composites
- Luminescence Properties of Advanced Materials
- Epoxy Resin Curing Processes
- Building materials and conservation
- Advanced Sensor and Energy Harvesting Materials
- Synthesis and properties of polymers
- Injection Molding Process and Properties
- Additive Manufacturing Materials and Processes
- Pigment Synthesis and Properties
- Luminescence and Fluorescent Materials
- Composite Material Mechanics
- bioluminescence and chemiluminescence research
- Additive Manufacturing and 3D Printing Technologies
- Rock Mechanics and Modeling
- Manufacturing Process and Optimization
- Numerical methods in engineering
- Nanomaterials and Printing Technologies
- Surface Modification and Superhydrophobicity
Seoul National University
2018-2021
This paper proposes a stochastically coupled thermo-chemical and viscoelastic model provides new insights from comparisons of the cure-induced residual stresses distortions between various ply configurations. Six different laminate configurations were modeled to compare material response during four manufacturing steps: in-mold curing, cool-down, post-curing, final cool-down. While homogeneous plates with cross-ply configuration showed same at all analyzed points, nonhomogeneous laminates...
In this paper, we present a novel approach to enhance the mechanoluminescence (ML) sensitivity of composite made with epoxy resin and strontium aluminate co-doped europium ions dysprosium (SrAl2O4: Eu2+, Dy3+) (SAOED) by subjecting it ultrasonic vibration throughout curing process. Three different SAOED particle size models were subjected frequencies; 200 kHz; 120 40 kHz control 0 kHz, in order investigate effect sonication frequency on ML sensitivity. A series fractography analyses was...
Mechanoluminescence (ML), which emits light upon external mechanical stress, was applied to fibrous composites. Herein, ML particles were incorporated into poly(vinylidene fluoride) (PVDF) and polyacrylonitrile (PAN) electrospun webs prepare ML/PVDF ML/PAN composite fabrics. The produced fabrics treated with O2 C4F8 plasma modify the wetting properties, then effects of wettability on light-emitting response in dry wet conditions investigated. intensity greatly decreased when absorbed water....
In this research, we propose a computational method to predict the residual stresses and strains of carbon fiber composite by considering curing kinetics, chemical shrinkage, thermal expansion. During process composites manufacturing, expansion, resin viscoelastic behavior lead stresses. Predicting is important evaluate deformation mechanical properties materials. However, expensive time-consuming. On other hand, can be used replace actual experiments save costs. work, material kinetics are...