Damage calculation method for stress corrosion crack of glass fiber reinforced polymer composites. (15th February 2023)

• Record Type: Journal Article
• Authors: Qi, Cong; Lin, Shenlu; Yan, Xina
• Is Part Of: Composite structures. Volume 306(2023)
• Publication Date: 2023-02-15
• Subjects: Stress corrosion cracking -- Glass fiber reinforced polymer composites -- Stress intensity factor -- Crack propagation; Composite construction -- Periodicals; Composites -- Périodiques; 624.18
• DOI: 10.1016/j.compstruct.2022.116575
• Languages: English
• ISSNs: 0263-8223

Abstract

Abstract: Combined with GFRP composites stress corrosion experiments, the traditional virtual crack closure technique (VCCT) is improved, and a new WDN-VCCT method is proposed to calculate the stress intensity factor (SIF) at the crack tip of GFRP composites. Its calculation formula makes up for the deficiency of the traditional VCCT method. The calculation results of the WDN-VCCT method and the calculation results of the stress extrapolation method (SEM) are compared and analyzed, and the actual accuracy of the two methods is fully evaluated. The results show that the calculation accuracy of the WDN-VCCT method is higher than that of the SEM method, the calculation efficiency is faster, and the calculation results are closer to the real value.