Xu, C;
Yuan, Y;
Zhao, C;
Tan, PJ;
Xu, X;
Li, Y;
(2018)
Dynamic crack-interface interactions in SGP laminated glass: An experimental investigation.
Mechanics of Materials
, 122
pp. 76-84.
10.1016/j.mechmat.2018.04.006.
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Abstract
The damage mode (crack arrest or bifurcation) that develops in SentryGlas® Plus (SGP) laminated glass under dynamic impact loading is investigated experimentally in this paper. An optical caustic method is employed – which allows simultaneous measurements of the spatial and temporal evolution of crack paths and the dynamic stress intensity factor at the crack tip(s) – to elucidate the effects of interface location and impact kinetic energy upon the fracture morphology, crack propagation velocity and the dynamic stress intensity factor in SENB (single-edge notch bend) test specimens loaded in three-point bending by a drop-weight impact system. Results reveal that there is a critical distance, between the interface and pre-crack tip, below which the propagating mode-I crack is arrested by the interface; otherwise, bifurcated mixed-mode cracks will always appear in the impacted glass layer. A maximum dynamic stress intensity factor criterion is shown to be capable of predicting whether bifurcated mixed-mode cracks would appear in the aforesaid.
| Type: | Article |
|---|---|
| Title: | Dynamic crack-interface interactions in SGP laminated glass: An experimental investigation |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.mechmat.2018.04.006 |
| Publisher version: | https://doi.org/10.1016/j.mechmat.2018.04.006 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Dynamic fracture, Crack-interface interaction, Optical caustic method, Laminated glass, Dynamic stress intensity factor |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Mechanical Engineering |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10046176 |
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