Evaluation of generalized stress intensity factors at blunt V-notch tip in polymer materials using transmitted caustics. Issue 19 (18th July 2022)

• Record Type: Journal Article
• Authors: Liu, Wei; Li, Longkang; Xu, Peng; Yue, Zhongwen
• Is Part Of: Mechanics of advanced materials and structures. Volume 29:Issue 19(2022)
• Page Start: 2845
• Page End: 2856
• Publication Date: 2022-07-18
• Subjects: Blunt V-shaped notch -- experimental mechanics -- notch stress intensity factor -- optical caustics -- polymer materials; Composite materials -- Mechanical properties -- Periodicals; Composite construction -- Periodicals; 620.118
• DOI: 10.1080/15376494.2021.1880673
• Languages: English
• ISSNs: 1537-6494

Abstract

Abstract: The paper deals with the notch stress intensity factors (NSIFs) at a blunt V-notch tip in polymer materials using transmitted caustics. First, the governing equations of transmitted caustics which relate to the experimental measurements and the linear elastic stress fields at blunt V-shaped notches are established. Second, a series of caustic curves at the blunt V-notch tip under mode I loading are simulated. Finally, fracture experiments of polymer materials with a blunt V-shaped notch under three-point-bend loading are performed. The NSIFs obtained from caustic measurements show a good agreement with numerical results.