Experiments and Strength Prediction of a Joint Composed of a Pultruded FRP Tube Bonded to an FRP Lamella

Simon Hehl; Till Vallée; Yu Bai

doi:10.4028/www.scientific.net/KEM.417-418.505

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 417-418Experiments and Strength Prediction of a Joint...

Experiments and Strength Prediction of a Joint Composed of a Pultruded FRP Tube Bonded to an FRP Lamella

Abstract:

Adhesively bonded connections involving pultruded FRP typically fail in a brittle manner, making their analysis a case study for the application of statistical size effects. For brittle materials, in which failure is often caused by a single critical defect, statistically based size effects on strength are adequately explained by probabilistic theories such as the Weibull strength theory. A previously implemented probabilistic dimensioning method for adhesively bonded balanced joints is extended to a complex joint involving a tube and a lamella, both made of pultruded FRP. Instead of the previously used 2d approach the extension requires a 3d formulation. The entire joint is idealized as being constituted by n elements; its survival depends on the simultaneous survival of all elements. By the means of a 3d FEA, failure triggering stress components in all n elements were determined; a probability of failure is associated to each element using the corresponding combination stresses combined into an appropriate failure criterion, hence defining a theoretical joint strength.

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Periodical:

Key Engineering Materials (Volumes 417-418)

Pages:

505-508

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.417-418.505

Citation:

Cite this paper

Online since:

October 2009

Authors:

Simon Hehl, Till Vallée, Yu Bai

Keywords:

Adhesive, Bonding, Carbon Fiber Reinforced Polymer/Plastic (CFRP), Finite Element Analysis (FEA), Joint, Probabilistic, Strength

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