Effect of maximum load on cyclic crack growth in UD E-glass/vinyl ester composites with constant and alternating stitch density. Issue 1 (October 2020)

• Record Type: Journal Article
• Authors: Erives Anchondo, Rubén I; Goutianos, Stergios
• Is Part Of: IOP conference series. Volume 942:Issue 1(2020)
• Publication Date: 2020-10
• Subjects: Materials science -- Periodicals; 620.1105
• DOI: 10.1088/1757-899X/942/1/012041
• Languages: English
• ISSNs: 1757-8981

Abstract

Abstract: DCB specimens, manufactured from composites with constant and alternating stitching density, are tested under pure mode I for static and cyclic loading. The tests are carried out for different maximum load values, but keeping the same R-ratio. The crack growth is recorded from pictures at different cycle intervals, and the energy release rate (ERR) is computed using an approach based on the J-Integral. Along with the crack-tip, the length of the fracture process zone (FPZ) is recorded with the number of cycles. A curve relating the crack growth rate (CGR) and the cyclic fracture resistance, Δ J, which can be directly applied in the design/repair process of composite structures, is derived.