Strength prediction of a joint composed of a pultruded FRP tube bonded to an FRP lamella

Rauscher, R.; Spang, F.; Lehmann, Martin; Vallée, Till (July 2009). Strength prediction of a joint composed of a pultruded FRP tube bonded to an FRP lamella In: 17th International Conference on Composite Materials. Edinburgh, UK. 27-29 Jul 2009.

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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.

Item Type:

Conference or Workshop Item (Paper)


School of Architecture, Wood and Civil Engineering
School of Architecture, Wood and Civil Engineering > Institute for Materials and Wood Technology
BFH Centres and strategic thematic fields > BFH Centre for Wood - Resource and Material


Rauscher, R.;
Spang, F.;
Lehmann, Martin0000-0002-0813-7023 and
Vallée, Till


Q Science > Q Science (General)
Q Science > QA Mathematics
T Technology > T Technology (General)
T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TH Building construction




Martin Lehmann

Date Deposited:

22 Apr 2020 12:26

Last Modified:

09 Nov 2022 11:14

Uncontrolled Keywords:

Adhesive Bonding FEA FRP Joints Probabilistic Strength




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