Evaluation of Buckling of 2024-T3 under High Temperatures

Abstract

The mechanical and buckling behavior of AA 2024 – T3 at high temperatures has been presented. The material was examined by thermal tensile test rig with 400℃ capacity. While buckling tests were carried out using a thermal rotating buckling test machine. Several observations were drawn from the experimental results, such as the mechanical and buckling properties are reduced by application of high temperatures. The experimental results of (UTS), (YS), (BHN) and (E) were decreased by 13.77%, 19.76%, 28.8% and 24.65% respectively due to application of 250c comparing to that at room temperature. The critical buckling load (Pcr) is increased when the column length and (SR) are reduced. The critical buckling load (Pcr) results were reduced from 910N to 610N when the applied temperature increased from (RT) to 250℃. Therefore, using a high temperature true of 250℃ gives a reduction percentage of 33% in critical buckling load result. The estimation of Euler theory was overestimated the buckling properties, but when using a safety factor the estimation seems to be resemble.