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| Xenon Lamp Aging Characteristics of Glass Fiber-aluminum Laminates |
| Received:November 13, 2017 Revised:April 15, 2018 |
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| DOI：10.7643/ issn.1672-9242.2018.04.020 |
| KeyWord:xenon lamp aging glass fiber-aluminum laminate interface bridge stress |
| Author | Institution |
| CUI Hai-chao |
AVIC Composite Technology Center, Beijing , China |
| XIONG Lei |
Nanchang Hangkong University, Nanchang , China |
| MA Hong-yi |
AVIC Composite Technology Center, Beijing , China |
| ZHAI Quan-sheng |
AVIC Composite Technology Center, Beijing , China |
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| Abstract: |
| Objective To research xenon lamp aging characteristics of glass fiber-aluminum laminates. Methods The xenon lamp aging mechanism of glass fiber-aluminum laminates was researched by analyzing their mechanical properties, IR spectrums, morphology, and elemental changes of aluminum alloy. Results Under the condition of accelerating the xenon lamp aging, the inner matrix of the composite material would be hygroscopic and plasticized, and the interface of resin-fiber and resin-aluminum would be destroyed, which affected the internal stress transmission and the mechanical properties. After aging for 84d, the tensile strength of orthogonal structure laminates was reduced by 13.7%, which affected most by the xenon lamp aging, and the bending strength of laminate in the 0° direction of orthogonal structure was reduced by 4.6%; while that of other samples was decreased by less than 5%. There was no significant change in the number and size of micro-pits on the surface of the aluminum alloy layer, where oxygen content slightly increased with the aging cycle. Conclusion The xenon lamp environment mainly affects the composite layers and the interfaces in the glass fiber-aluminum alloy laminate. The degradation of the resin matrix leads to the deterioration of the mechanical properties, but the effect on the aluminum alloy is not obvious. |
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