测试了复合材料RTM十字型接头疲劳性能,分析对比RTM、缝纫RTM和共胶接3种不同成型工艺十字接头的疲劳强度,结果表明:RTM成型十字接头具有良好的疲劳性能,缝纫RTM接头仅为前者的1/4,而先固化后胶接接头最低.研究还发现,复合材料疲劳寿命对成型工艺非常敏感,导致试验结果存在严重分散性.RTM和缝纫RTM的接头破坏都是从根部富树脂区的尖端率先产生裂纹,然后裂纹沿着富树脂区和玻璃布的界面向下扩展,直至接头的整体破坏;先固化后胶接接头则表现为中间层板和T接头的胶层拉伸破坏.
参考文献
| [1] | H. J. Phillips;R. A. Shenoi .Damage tolerance of laminated tee joints in FRP structures[J].Composites, Part A. Applied science and manufacturing,1998(4):465-478. |
| [2] | SHENOI R A;HAWKINS G L .Influence of material and geometry variations on the behaviour of bonded tee connections in FRP ships[J].Composites,1992,23:335-345. |
| [3] | DODKINS A R;SHENOI R A;HAWKINS G L .Design of joints and attachments in FRP ships' structures[J].Marine Structures,1994,7:365-398. |
| [4] | Rispler AR.;Tong LY.;Steven GP. .FAILURE ANALYSIS OF COMPOSITE T-JOINTS INCLUDING INSERTS[J].Journal of Reinforced Plastics and Composites,1997(18):1642-1658. |
| [5] | Kumari S.;Sinha PK. .Finite element analysis of composite wing T-joints[J].Journal of Reinforced Plastics and Composites,2002(17):1561-1585. |
| [6] | DHARMAWAN F;THOMSON R S;LI H C H et al.Geometry and damage effects in a composite marine T-joint[J].Computers & Structures,2004,66:181-187. |
| [7] | H.C.H. Li;F. Dharmawan;I. Herszberg;S. John .Fracture behaviour of composite maritime T-joints[J].Composite structures,2006(1/4):339-350. |
| [8] | Numerical simulation of sandwich T-joints under dynamic loading[J].Composites, Part B. Engineering,2008(6):p.973-985. |
| [9] | READ P J C L;SHENOI R A .Fatigue behavior of single skin FRP tee joints[J].International Journal of Fatigue,1999,21:281-296. |
| [10] | SHENOI R A;READ P J C L;HAWKINS G L .Fatigue failure mechanisms in fibre-reinforced plastic laminated tee joints[J].International Journal of Fatigue,1995,17(06):415-426. |
| [11] | 彭勃 .CO-RTM 成型T型接头设计制备与力学性能[D].北京:北京航空航天大学,2007. |
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