Specifications of bioinspired material structural foam prosoma of Tachpleus gigas and Carcinocorpius rotundicaud using acoustic impulse response

Abstract

Renewable material innovation has shifted from inorganic materials to biological materials. Especially due to the demands of modern applications in food, biomedicine, and environmental sustainability. The peculiarity of the horseshoe crab is in the prosoma with a hollow structure (foam). The development of structural specifications also leads to non-destructive modern measurements using acoustic response impulse. This study aimed to determine the specifications foam material (shape and size) of the prosoma Tachypleus gigas and Carcinoscorpius rotundicauda using acoustic impulse responses. The research includes the characterization of the components and structure of the foam material prosoma using acoustic impulse response The prosoma components of T. gigas and C. rotundicauda have high protein and crude fiber, as well as functional groups according to chitin. The weight of T. gigas and C. rotundicauda ranges 484.33 ± 5.13 g and 493.33 ±15.28 g and densities of 1206.45 ± 148.01 kg/m3 and 1264.60 ± 120.01 kg/m3, but have differences in pore diameter and strut, 431.39μm ± 166.22 and 153.30μm ± 33.62 for pore diameter and strut, 120.09μm ± 57.83 and 98.0881μm ± 26.75 and compressive strength of 220.68 kPa and 285.88 kPa, and elasticity of 17.85 and 38.12.