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First published on July 18, 2008, doi:10.1177/0731684407081378
This version was published on August 14, 2008

Article

Effect of T-Joint Geometry on the Performance of a GRP/PVC Sandwich System Subjected to Tension

Ege Anil Diler1, Çiçek Özes1, and Gökdeniz Neser2*

1 Dokuz Eylül University Engineering Faculty Department of Mechanical Engineering Bornova 35100 Izmir, Turkey
2 Dokuz Eylul University Institute of Marine Sciences and Technology Baku B. 100 Inciralti, 35340 Izmir, Turkey

* To whom correspondence should be addressed.


  Abstract

Mechanical performances of six sandwich type T-joints, used in marine applications subjected to tensile load, have been investigated both numerically and experimentally in this study. T-joints, each with different geometries, have been manufactured, Type A: continuous core in joint with right angle; Type B: core removed at joint; Type C: core with wedge fillet; Type D: core with 25 mm radius fillet; Type E: core with 70 mm radius fillet and Type F: DK-CND1 of Toftegaard and Lystrup with overlaminate. The skin was a 5 mm thick orthophitalic polyester/glass laminated composite and the core was PVC (Divinycell H80). Due to absolute values of the maximum strain alues of the T-joints, Type E shows promising performance under tension while Type B is the weakest. It is not recommended to use Type B in the structures subjected to tension. Grading from the strongest to the weakest of T-joints is Type C, D, A and F. Results of the numerical modelling and tests also affirm the utility of the 2D FE models for further studies of the strain distribution in such sandwich T-joints.

Key Words: composites in marine use, T-joints, PVC/GRP sandwich system.


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