Experimental and numerical fatigue life study of cracked AL plates reinforced by glass/epoxy composite patches in different stress ratios. Issue 6 (1st July 2021)

• Record Type: Journal Article
• Authors: Hosseini, K.; Safarabadi, M.; Ganjiani, M.; Mohammadi, E.; Hosseini, A.
• Is Part Of: Mechanics based design of structures and machines. Volume 49:Issue 6(2021)
• Page Start: 894
• Page End: 910
• Publication Date: 2021-07-01
• Subjects: Cracked Al plate -- composite patch -- fatigue testing -- stress ratio -- finite element simulation; Structural analysis (Engineering) -- Periodicals; Structural design -- Periodicals; 624.17
• DOI: 10.1080/15397734.2020.1714448
• Languages: English
• ISSNs: 1539-7734

Abstract

Abstract: In this study, the fatigue behavior of composite reinforced cracked aluminum 1050 plates is investigated experimentally and numerically. The tests are conducted in four different stress ratios between 0 and 1. At first step, plates with similar cracks and geometries have been prepared. Then the glass/epoxy patches have been attached to the cracked plates using Araldite 2015 adhesive. Fatigue load has been applied to three cases of samples including non-patch, one-side patch and two-side patch, where in all stress ratios the maximum force is considered constant. A three-dimensional finite element analysis is developed in ABAQUS. A good correlation between finite element results and the corresponding experimental data was observed. The results illustrated that two-side patch sample has the most fatigue strength. It is found that for two-side patch samples, fatigue life has been increased approximately 2000% and 4800% in the stress ratios R = 0 and 0.5, respectively in comparison with the non-patched samples. Communicated by Krzysztof Kamil Żur.