Effects of stitching parameters on the mechanical properties of stitched sandwich panel structures. Issue 4 (15th February 2021)

• Record Type: Journal Article
• Authors: Ai, Shigang; Chen, Yanfei; He, Rujie
• Is Part Of: Ceramics international. Volume 47:Issue 4(2021)
• Page Start: 5249
• Page End: 5255
• Publication Date: 2021-02-15
• Subjects: Stitching -- Sandwich structures -- Woven -- Damage behaviors -- Strengths; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2020.10.105
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: This paper studied the mechanical performances of a novel stitched sandwich panel structure (SSPS), which contains two Al2 O3 /Al2 O3 woven composite face-sheets, an aerogel heat-insulation core, and several mullite z-pin fiber yarns. Four types of experiments were conducted, including out-of-plane compression and tension, interlaminar shear, and three-point bending, to reveal the effects of stitching density, stitching yarn twist, and strands on the mechanical performances of the SSPS. Experimental results indicated that the stitching parameters have significant effects on the mechanical properties of the SSPS, in particular, the strengths and failure features. This study indicated that perforation and stitching are convenient and efficient approaches to promote the performances of panel-core-panel sandwich structures.