The aims of this thesis are to fabricate the single-edged Ti/APC-2 hybrid composite laminates with and without(w/wo) nanoparticles and to investigate their mechanical properties due to tensile and cyclic tests. The composite laminates were three-layered laminates with one 0.55 mm thick APC-2 lay-ups covered by two 0.5 mm thick Grand 1 titanium alloy sheets. Nanoparitcles SiO2 were dispersed uniformly on the interfaces of APC-2 with optimal amount of 1wt%. The APC-2 was stacked according to cross-ply [0/90]s sequences. The titanium sheet surface was treated by chromic acid anodic method to achieve perfectly bonding with matrix PEEK. The modified diaphragm curing process was adopted to cure Ti/APC-2 hybrid composite laminates. The cutting of single-edged cracks with Electrical Discharge Machine, such as 1.5 mm and 3.0mm and 4.5 mm and 6.0 mm. The MTS 810 material testing machine was used to conduct all the tests.
The mechanical properties, such as ultimate tensile strength, longitudinal stiffness of composite laminates w/wo nanocomposite laminate were obtained from the static tensile tests. The stress-strain diagrams were plotted in laminates for the corresponding single-edged crack. The constant stress amplitude tension-tension cyclic tests were carried out by using load-control mode at a sinusoidal loading wave with frequency of 5Hz and stress ratio R=0.1. The received fatigue data were plotted in S-N curves for different single-edged crack.
From the results, the conclusion were summarized. First, both ultimate strengths of Ti/APC-2 composite laminates and nanocomposite laminates are very close. Second, Ti/APC-2 cross-ply nanocomposite laminates have better fatigue resistance than that of Ti/APC-2 cross-ply composite laminates.
| Identifer | oai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0628112-130537 |
| Date | 28 June 2012 |
| Creators | Lin, Bo-Cyuan |
| Contributors | Ming-Chen, Ming-Hwa Jen, Mei-Ling Wu, Jer-Ming Hsu, Huang-Kuang Kung |
| Publisher | NSYSU |
| Source Sets | NSYSU Electronic Thesis and Dissertation Archive |
| Language | Cholon |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0628112-130537 |
| Rights | user_define, Copyright information available at source archive |
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