Study on the Mechanical Properties of Loofah Sponge in Cyclic Compression

To examine the physical properties of loofah sponge structures, the article employed air-dried loofah samples subjected to quasi-static compression experiments at varying heights and strain rates. In quasi-static compression, the results indicate that the natural structure of the loofah sponge has a lower initial peak stress and greater specific energy absorption. Meanwhile, to determine the durability of the woven structure of the loofah sponge, cyclic compression experiments were conducted on samples of the loofah sponge at strain rates of 0.1 and 0.01 s^–1 after the compression test. Analysis of experimental data collected after ten cyclic compression cycles revealed that the natural loofah sponge structure exhibited remarkable recovery and durability, with an energy loss efficiency of merely 32 and 29%, respectively. The research demonstrates that natural loofah sponge possesses remarkable energy absorption capabilities and durability. It can be considered an ideal example for the application of tubular, lightweight load-bearing components in the field of impact.