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The composite materials are remarkably increasing in many industry sectors like aircraft, automobiles, oil pipes, and marine boats. This attention comes from their excellent properties, such as lightweight and high strength. However, these materials expose many damages like fiber-matrix debonding, matrix crack, and delamination. The composite structures risked damage through the service life and therefore need to repair to achieve their function with a good performance. This paper focuses on the analysis during the tensile test of samples of fiberglass epoxy composite materials exposed to damage before and after repair. Experimental and numerical investigations are performed to determine and identify mechanical properties and failure analysis between repaired and unrepaired composite plates. Five samples are selected: without hole, 4 mm hole-repaired, stepped hole from 4 to 8 mm, and stepped hole from 4 to 8 mm-repaired. Simulation models are created using the finite element (FE) method to compare them with Abaqus's practical experiments to predict damage during the tensile test. To simulate damage models, interlaminar and intralaminar damage, were used to study initiation and propagation of the samples failure. Results show that the experimental and numerical investigations of the repaired samples have a significant effect on the mechanical properties and failure behavior of the holed and stepped plates compared with unrepaired samples. Also, maximum stress and strain are concentrated around and on both sides of the hole, while the most significant damage occurs around the hole and the axial direction.
Słowa kluczowe
Wydawca
Rocznik
Tom
Strony
99--108
Opis fizyczny
Bibliogr. 11 poz., tab., fig.
Twórcy
autor
- Production Engineering and Metallurgy Department, University of Technology, Baghdad, Iraq
autor
- Production Engineering and Metallurgy Department, University of Technology, Baghdad, Iraq
autor
- Production Engineering and Metallurgy Department, University of Technology, Baghdad, Iraq
Bibliografia
- 1. Wei L., Zhu W., Yu Z., Liu J., Wei X. A new three-dimensional progressive damage model for fiber-reinforced polymer laminates and its applications to large open-hole panels. Composites Science and Technology. 2019; 182: 107757.
- 2. Rajkumar K., Ramraji K., Manojkumar M., Gnanavelbabu A. Validation of tensile strength of notched hybrid polymer composite using Whitney-Nusimer point stress model. Materials Today: Proceedings. 2020; 1(27): 940–945.
- 3. Zhang D., Zheng X., Wu T. 2019. Damage characteristics of open-hole laminated composites subjected to longitudinal loads. Composite Structures. 230; 111474.
- 4. JAlmeida Jr J.H., Bittrich L., Spickenheuer A. Improving the open-hole tension characteristics with variable-axial composite laminates: Optimization, progressive damage modeling and experimental observations. Composites Science and Technology. 2020; 5(185): 107889.
- 5. Azadi M., Sayar H., Ghasemi-Ghalebahman A., Jafari S.M. Tensile loading rate effect on mechanical properties and failure mechanisms in open-hole carbon fiber reinforced polymer composites by acoustic emission approach. Composites Part B: Engineering. 2019; 1(158): 448–458.
- 6. Tong L., Soutis C. Recent advances in structural joints and repairs for composite materials; 2003.
- 7. Budhe S., Banea M.D., De Barros S. Bonded repair of composite structures in aerospace application: a review on environmental issues. Applied Adhesion Science. 2018; 6(1): 1–27.
- 8. Caminero M.A., Pavlopoulou S., Lopez-Pedrosa M., Nicolaisson B.G., Pinna C., Soutis C. Analysis of adhesively bonded repairs in composites: Damage detection and prognosis. Composite Structures. 2013; 95: 500–517.
- 9. Özaslan E., Güler M.A., Yetgin A., Acar B. Stress analysis and strength prediction of composite laminates with two interacting holes. Composite Structures. 2019; 221: 110869.
- 10. Whitney J.M., Nuismer R.J. Stress fracture criteria for laminated composites containing stress concentrations. Journal of composite materials. 1974; 8(3): 253–265.
- 11. Singh H., Namala K.K., Mahajan P. A damage evolution study of E-glass/epoxy composite under low velocity impact. Composites Part B: Engineering. 2015; 76: 235–248.
Uwagi
Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-02434ea9-b566-42cf-94f6-37875f5ce7bf