Influence of Tilt Angle on the Thermal Breakage Performance of Four-Sided Shaded Glass

Abstract

In order to study the effect of tilt angle on the four-sided shaded glass thermal breakage behavior under dynamic loading, using a self-built glass fire bench, a series of experiments were conducted on the X-axis (X-axis represents the thickness direction perpendicular to the glass surface) and Y-axis (Y-axis represents the plane direction parallel to the glass surface) of the glass, respectively. The results show that the thermal breakage behavior of glass is strongly influenced by the tilt angle. The first rupture time of the glass increases and then decreases with the increase of the tilt angle in the X-axis, and the opposite is true in the Y-axis. Among them, the first rupture time is maximum when tilted at 5° (290 s) and 0° (200 s) in the X and Y axes, respectively; By comparing the stress damage, it is found that the dynamic extension process of glass cracks mainly depends on the competing effects of brittle material properties and tensile stresses. And revealed the mechanism of thermal breakage emergence and evolutionary behavior of glass under different tilting conditions. That is, the mutual composition of the glass grains under the accumulation of thermal stresses, resulting in the dislocation of each other, macroscopically manifested in the differences of different crack patterns.