Influence of Biaxial Loads on Impact Fracture of High-Strength Membrane Materials

Authors: Kumazawa, Hisashi¹; Susuki, Ippei²; Hasegawa, Osamu³; Kasano, Hideaki³

Source: Advanced Composite Materials, Volume 18, Number 4, 2009 , pp. 395-413(19)

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Abstract:

Impact tests on high-strength membrane materials under biaxial loads were experimentally conducted in order to evaluate influence of biaxial loads on impact fracture of the membrane materials for the inflated applications. Cruciform specimens of the membrane materials were fabricated for applying biaxial loadings during the impact test. A steel ball was shot using a compressed nitrogen gas gun, and struck the membrane specimen. Impact tests on uniaxial strip specimens were also conducted to obtain the effect of specimen configuration and boundary condition on the impact fracture. The results of the measured crack length and the ultra-high speed photographs indicate the impact fracture properties of the membrane fabrics under biaxial loadings. Crack length due to the impact increased with applied tensile load, and the impact damages of the cruciform membrane materials under biaxial loadings were smaller than those of under uniaxial loadings. Impact fracture of the strip specimen was more severe than that of the cruciform specimen due to the difference of boundary conditions.

Keywords: COATED WEAVE FABRICS; IMPACT FRACTURE; BIAXIAL LOAD; CRUCIFORM SPECIMEN; HIGH-SPEED PHOTOGRAPHY

Document Type: Research article

DOI: http://dx.doi.org/10.1163/156855109X434793

Affiliations: 1: Aerospace Research and Development Directorate, Japan Aerospace Exploration Agency 6-13-1 Ohsawa, Mitaka-shi, Tokyo, Japan, 181-0015;, Email: kumazawa.hisashi@jaxa.jp 2: Aerospace Research and Development Directorate, Japan Aerospace Exploration Agency 6-13-1 Ohsawa, Mitaka-shi, Tokyo, Japan, 181-0015 3: Department of Mechanical System Engineering, Takushoku University 815-1 Tatemachi, Hachioji-shi, Tokyo, Japan 193-0985

Publication date: 2009-10-01