LU Zhi-xian, LIU Bin, TUO Hong-liang. Effects of Environment and Open Hole on the Mechanical Performance for Composite Laminate Plates[J]. International Journal of Plant Engineering and Management, 2017, 22(2): 73-83

Effects of Environment and Open Hole on the Mechanical Performance for Composite Laminate Plates
LU Zhi-xian, LIU Bin, TUO Hong-liang
School of Aeronautics, Northwestern Polytechnical University, Xi'an 710072, P. R. China
As composites are increasingly used in aircraft, composites-based the primary-load bearing structures were gradually considered for wide application. However, to determine worst case of the primary-load bearing structures of composites is quite necessary. In this paper, to reveal the effects on the mechanical performance of composite laminate plates were made, respectively by open holes and different environments. Firstly, we obtained the benchmark of composite plates by conducting tension and compression of room temperature and dry air(RTD), tension of cold temperature and dry air (CTD), and compression of elevated temperature and wet(ETW). Then opened circle holes were introduced into composite plates to know the influence of holes. Finally, CTD and ETW environment were respectively investigated to composite plate with holes being under tension and compression loads. As shown by experimental results, open-holes decreased tension and compression mechanical performance 42% and 46% respectively, and ETW environment have 17% and 23% decreasing influence on the compression mechanical performance of composite plate and plate with holes. Furthermore, the compression damage mechanism of composite plates and plates with holes are fiber compressing-shearing fracture after fiber buckling.
Key words:    primary-load bearing    openholes    composite    CTD    ETW    fiber buckling   
Received: 2017-02-20     Revised:
DOI: 10.13434/j.cnki.1007-4546.2017.0202
Corresponding author:     Email:
Author description: LU Zhi-xian is an associate professor in School of Aeronautics, Northwestern Polytechnical University. His research interest is structural integrity.
LIU Bin is an assistant professor in School of Aeronautics, Northwestern Polytechnical University. His research interest is composite mechanics and composite bonded repair.
Tuo Hong-liang is a doctor candidate in school of aeronautics,Northwestern Polytechnical University.His research interest is damage in composite structures.
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LU Zhi-xian
TUO Hong-liang

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