Abstract
A new experimental technique is developed to monitor the initiation and propagation of adebond crack during a fibre pull-out experiment. The advanced experimental setup consists of a high resolution video camera and a laser extensometer mounted at a tensile test machine. The test setup enables the measurement of the fibre/matrix displacement and debond length. A micromechanical model is used for analysing the experimental data. It allows the evaluation of the following parameters: the interface debond energy GIIc and the frictional sliding shear stress τs at the fibre/matrix interface, and the misfit strain ΔεT, accounting for initial residual stresses. Specimens of a single steel fibre embedded centrally in a polyester matrix are tested using the experimental setup and the model. A practical experimental procedure for establishing the interface parameters is suggested, and an example demonstrates the procedure and yields a set of interface parameters.
| Original language | English |
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| Journal | Proceedings of the Risø International Symposium on Materials Science |
| Volume | 34 |
| Pages (from-to) | 341-348 |
| ISSN | 0907-0079 |
| Publication status | Published - 2013 |
| Event | 34th Risø International Symposium on Materials Science: Processing of fibre composites – challenges for maximum materials performance - Technical University of Denmark, Risø Campus, Roskilde, Denmark Duration: 2 Sept 2013 → 5 Sept 2013 |
Conference
| Conference | 34th Risø International Symposium on Materials Science |
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| Location | Technical University of Denmark, Risø Campus |
| Country/Territory | Denmark |
| City | Roskilde |
| Period | 02/09/2013 → 05/09/2013 |