Mechanical Properties of Window Frames Exposed to High Temperatures

Abstract

This study aimed to examine the risks from window frames installed in the opening of an outer wall when exposed to high temperatures and to secure the DB through tests on the thermal and tensile strength characteristics of different materials. Al6063-T5 was tested up to 600 ℃ at intervals of 100 ℃. Changes in the thermal properties and decreases in the tensile strength occurred rapidly at 400 ℃. The tensile strength was measured as 84.41 MPa, i.e., 34.1% of that at room temperature at 600 ℃ (the maximum test temperature). In the case of polyvinyl chloride, tests were conducted up to 70 ℃ at intervals of 10 ℃. The thermal characteristics were found to be constant and did not significantly affect the increase in temperature. However, the increase in temperature and decrease in tensile strength were found to be proportional. In the case of the tensile strength, a tensile strength of 14.98 MPa (45% of room temperature) was measured at 70 ℃ (the maximum test temperature).