High strain-rate effects from blast loads on laminated glass: An experimental investigation of the post-fracture bending moment capacity based on time–temperature mapping of interlayer yield stress

To enhance the resilience of buildings, laminated glass panels are increasingly used in glazed façades. These ductile provide a superior blast resistance to that provided by monolithic panels, due improved residual capacity offered polymer interlayer following fracture layers. The complex interaction between attached fragments and is still only partially understood. help address this, this paper investigates experimentally post-fracture bending moment glass. Three-point tests performed at low temperature on specimens pre-fractured before testing, ensure controlled repeatable patterns. simulates effects high strain-rates result from short-duration loads taking advantage time–temperature dependency viscoelastic interlayer. In these experiments, polyvinyl butyral considered as interlayer, being most common for building facades. A new mapping equation derived experimental results available literature, relate temperatures same yield stress. low-temperature demonstrate an enhancement ultimate load fractured two orders magnitude, compared room temperature. This suggests associated with now stiffer working tension compression. Due similar therefore anticipated typical loading. Finally, assumed composite action further supported additional thicker PVB layers, which enhanced consistent theory existing analytical models.