Fractural Analysis of S2 glass fiber/ SC15 Epoxy Reinforced composite Material using Numerical Method
| dc.contributor.advisor | Mulugeta Hailemariam (PhD) | |
| dc.contributor.author | Bereket Teshome | |
| dc.date.accessioned | 2024-07-31T08:23:29Z | |
| dc.date.available | 2024-07-31T08:23:29Z | |
| dc.date.issued | 2024-06 | |
| dc.description.abstract | Composite materials are utilized more extensively as a metal structure replacement in weight sensitive applications where energy and the environment are a real concern. This is due to their attractive properties as high strength-to-weight ratio and stiffness-to-weight ratio. Therefore, the replacement materials need to be studied and this research focused on numerical analyses of the interlaminar fracture behavior of S2-glass/SC15 epoxy composite. Glass fiber reinforced plastic (GFRP) composite structures are prone to fracture at interfaces or within the matrix which may not be visible from outside. Thus, a thorough knowledge of the initiation and propagation of cracks in GFRP composites is necessary. In this study, fracture mechanics approaches used to analyze fracture parameters of Mode I and Mode II. A numerical method was used to model the S2-glass/SC15 epoxy composite as a plain weave lamina. According to ASTM standards, Double Cantilever Beam (DCB) and End-Notched Flexure (ENF) specimens were used for Mode I and Mode II interlaminar fracture behavior analysis, respectively. The Virtual Crack Closure Technique (VCCT), a finite element method was applied to study crack propagation using Abaqus software. The analysis was performed to study the loads at which the model begins to delaminate. The two models showed delamination within the range of the load application. The strain energy release rate along the delamination directions and across the crack fronts were also determined. The strain energy release rate value of the S2 glass / SC15 epoxy composite for mode I and mode II loading conditions were found to be 0.92 J/m² and 1.1 J/m² respectively. Through the determination of the strain energy release rate and analysis of load-displacement responses, significant findings were obtained. The study successfully characterized the delamination behavior of the composite laminate under both Mode I and Mode II loading, providing insights into its fracture mechanics properties. The investigation into the strain energy release rate offered a quantitative measure of the energy required for crack propagation, aiding in understanding the material's resistance to delamination. | |
| dc.identifier.uri | https://etd.aau.edu.et/handle/123456789/3321 | |
| dc.language.iso | en_US | |
| dc.publisher | Addis Ababa University | |
| dc.subject | Interlaminar fracture | |
| dc.subject | Virtual Crack Closure Technique (VCCT) | |
| dc.subject | BK law | |
| dc.subject | DCB | |
| dc.subject | ENF | |
| dc.subject | strain energy release rate | |
| dc.subject | ABAQUS | |
| dc.title | Fractural Analysis of S2 glass fiber/ SC15 Epoxy Reinforced composite Material using Numerical Method | |
| dc.type | Thesis |