Mechanical and Energy Absorption Performance of Expanded Perlite Foam-filled Steel Tubes

The main objective of this research is to manufacture expanded perlite (EP) foam-filled stainless steel tubes for energy absorption application and investigate their physical compressive behavior. Foam-filled (FFT) were manufactured by consolidating perlite/sodium silicate composite foam inside the tube. EP particles size 5-6 mm taken manufacturing FFTs. Two different sodium solution water (S/W) ratios three compaction (CR) parameters foams. FFTs characterized density, yield stress, plateau absorption, efficiency. compression test results showed that filling improved properties ability tube significantly. failure analysis along with stress-strain curves was also conducted. change in mechanism found be reason high efficiency high-density tubes.