Experimental investigation and theoretical analysis of tear propagation of GQ-6 airship envelope
| Autor: | Yonglin Chen, Fengxin Wang, Gongyi Fu, Zhengming Guo, Guangzhong Liu |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Materials science
Polymers and Plastics Materials Science (miscellaneous) 02 engineering and technology Mechanics 021001 nanoscience & nanotechnology Industrial and Manufacturing Engineering 020303 mechanical engineering & transports 0203 mechanical engineering Tearing Chemical Engineering (miscellaneous) 0210 nano-technology Load ratio Envelope (waves) |
| Zdroj: | Journal of Industrial Textiles. 48:304-321 |
| ISSN: | 1530-8057 1528-0837 |
| Popis: | This paper reports the central tearing properties of a new airship envelope fabric, GQ-6, from experimental investigation and theoretical analysis. First, the effects of the load ratio, the initial crack length, and the crack orientation on the tearing mechanical properties of such material were evaluated. The experimental results revealed that the mechanical properties of GQ-6 decrease with the increase of initial crack length. Two fracture modes were observed, e.g. either along the warp or the weft yarns directions, which depend on crack orientation and load ratio. Oriented crack can be represented by non-oriented crack with crack equivalent length under biaxial condition. The toughness KICfor the fabric was determined based on experimental results, as well as critical energy release rate GIC. A comparison of the mechanical behaviors of this textile under uniaxial and biaxial tensile condition is also presented. The allowable crack length for GQ-6 envelope fabric during working condition is estimated. |
| Databáze: | OpenAIRE |
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