Mechanical Properties of Window Frames Exposed to High Temperature (II)

This study compares the dropout time obtained through a thermal analysis program with the results of a real experiment to estimate the time when a window in contact with outside air is dropped because of a fire in the compartment space. Nonlinear analysis of PVC and Al6063-T5 window frames on glass with a fire resistance of 1 h showed that the maximum strain over time was approximately 11.04% for the PVC frames and 9.55% for the Al6063-T5 frames. By comparing this over time, it was calculated that the front end occurred at approximately 750 s for the PVC frame and at 1,710 s for the Al6063-T5 frame. Existing real-world experiments show that the frame was deformed by melting and harmful penetration at approximately 540 s for PVC and 1,560 s for Al6063-T5; similar results are expected if the experiment is conducted until the window completely collapses.