Studies on Tensile Strength of Notched Woven Fabric Composites for Different Stacking Sequence. Issue 1 (October 2021)

• Record Type: Journal Article
• Authors: Latha Shankar, B; Shivashankar, G S; Thulasi Durai, D; Dushyanth Kumar, K R
• Is Part Of: IOP conference series. Volume 1189:Issue 1(2021)
• Publication Date: 2021-10
• Subjects: Composite laminates -- Stacking sequence -- Point stress criterion -- Notch strength.; Materials science -- Periodicals; 620.1105
• DOI: 10.1088/1757-899X/1189/1/012004
• Languages: English
• ISSNs: 1757-8981

Abstract

Abstract: Abstract.Present work emphasizes on the effect of stress concentration based on hole size, specimen width and stacking sequence on the fracture behavior of the woven-mat glass/epoxy reinforced composites both experimentally and numerically. In the present work three different stacking sequences: [45/-45], [0/90] and [30/60] were considered for the investigation. Laminates were fabricated using wet layup technique. Circular notches of six different diameters were considered for the analysis. Both notched and un-notched test specimens of all the configuration were subjected to tensile testing till fracture. Both experimental and analytical results show that stacking sequence has a significant influence on fracture stress in the presence of notch. Numerical results obtained using FEA were compared with experimental results. The obtained results showed that the notched fracture stresses were maximum for stacking sequence angles [+45/-45], and differ significantly from those of the [0/90] and [30/60]. The characteristic length (do ) influenced by hole size and specimen width as per the point stress criterion (PSC).