Structural behavior of broken laminated glass
Through-Cracked Tensile (TCT-) Test and Through-Cracked Bending (TCB-) Test
Laminated glass is the most important element for glass structures in modern architectural applications. Projects like the Apple store glass boxes at New York's 5th avenue or the glass boxes at Willis Tower in Chicago show the potential of these glasses. The Institute for Mechanics and Materials in Civil Enginnering collaborates with the world leaders in lamination and research on the topic and works on the fundamental mechanisms to study and to predict the structural behavior and failure mechanisms of glass laminates in the intact and the broken state.
The Through-Cracked Tensile (TCT-) Test and the Through-Cracked Bending (TCB-) Test are two experimental set-ups to study the local delamination and polymer behavior in a broken laminated glass. They can be conducted in the lab of the Institute under controlled temperature and humidity conditions. The IREP project consists of two parts where one is concentrating on the experimental work in the lab and one on the numerical simulation of the delamination process using cohesive zone elements.
Two IREP student(s) can work on this project.
Pre-requisites or requirements for the project
• Good knowledge in mechanics of materials, structural analysis and basic knowledge in numerical modeling.
• Knowledge in polymer mechanics is desirable but not a pre-requisite.
• Basic knowledge in strength testing is required for the experimental part of the project, knowledge in finite-element-software like ANSYS or ABAQUS is desirable for the theoretical part of thew project.
Literature and preparation
 Franz, J. & Schneider, J., 2014. Through-Cracked-Tensile tests with polyvinylbutyral ( PVB ) and different adhesion grades. In J. Schneider & B. Weller, eds. engineered transparency international conference at glasstec. Düsseldorf, pp. 135-142.
 Bati, S.B., Fagone, M. & Ranocchiai, G., 2009. Analysis of the post-crack behaviour of a laminated glass beam. In Glass Performance Days 2009. Tampere, pp. 349-352. Available at: www.glassfiles.com.
 Butchart, C. & Overend, M., 2012. Delamination in fractured laminated glass. In J. Schneider & B. Weller, eds. engineered transparency international conference at glasstec. Düsseldorf, pp. 249-257.
 Delince, D., 2014. Experimental Approaches for Assessing Time and Temperature Dependent Performances of Fractured Laminated Safety Glass. Ghent University.
 Van Duser, A., Jagota, A. & Bennison, S.J., 1999. Analysis of Glass/Polyvinyl Butyral Laminates Subjected to Uniform Pressure. Journal of Engineering Mechanics, 125(4), pp.435-442.
 Ferretti, D., Rossi, M. & Royer-Carfagni, G., 2012. Through Cracked Tensile Delamination Tests with Photoelastic Measurements. In F. Bos et al., eds. Challenging Glass 3. Delft: IOS Press BV, pp. 641-652.
 Iwasaki, R. et al., 2007. experimental study on the interface fracture toughness of PVB(polyvinyl Butyral)/glass at high strain rates. International Journal of Crashworthiness, 12(3), pp.293-298.
 Iwasaki, R. & Sato, C., 2006. The influence of strain rate on the interfacial fracture toughness between PVB and laminated glass. Journal de Physique IV, 134, pp.1153-1158. Available at: http://linkinghub.elsevier.com/retrieve/pii/jp4134176.
 Seshadri, M. et al., 2000. Mechanical behaviour in tension of cracked glass bridged by an elastomeric ligament. Acta Materialia, 48(18-19), pp.4577?4588. Available at: http://linkinghub.elsevier.com/retrieve/pii/S1359- 6454(00)00244-5.
 Seshadri, M. et al., 2002. Mechanical response of cracked laminated plates. Acta Materialia, 50(18), pp.4477-4490. Available at: http://linkinghub.elsevier.com/retrieve/pii/S1359-6454(02)00255-0.
 Sha, Y. et al., 1997. Analysis of adhesion and interface debonding in laminated safety glass. Journal of Adhesion Science and Technology, pp.49-63. Available at: http://www.ingentaconnect.com/content/vsp/ast/1997/00000011/00000001/art00004.
until end of March 2019