The failure behaviour of two reinforced glass beam designs has been compared in a four-point bending test. One design featured a slim section with a high moment of inertia and thus relatively low elastic strain energy absorption. The section of the other design, on the contrary, was stocky with a low moment of inertia and therefore high elastic strain energy absorption. The moment of resistance of both designs was approximately equal, so that the initial failure load was also practically the same. The energy release of the stocky beams at initial failure was significantly higher than for the slim beams. Also, the post-initial failure strength was significantly lower. However, this could be attributed mainly to the difference in internal moment arm for the tension carrying part of the section (i.e. the steel reinforcement) in the post initial failure stage. Contrary to the stocky beams, failure of the slim beams was, without exception, governed by adhesive failure. This is due to the higher shear stress. The amount of energy release did seem to have an effect on crack growth and consequently on failure behaviour, but the other mechanics parameters have an overriding effect.
|Title of host publication||Glass Performance Days 2009|
|Publication status||Published - Jun 2009|
|Event||Glass Performance Days, 11th International Conference on Architectural and Automotive Glass, June 12-15, 2009 - |
Duration: 12 Jun 2009 → 15 Jun 2009
|Conference||Glass Performance Days, 11th International Conference on Architectural and Automotive Glass, June 12-15, 2009|
|Period||12/06/09 → 15/06/09|