The Fracture Energies of Acellular and Cellular Fishes

Abstract

Acellular bone in more derived fishes has been observed withstanding higher stain rates than cellular bones in mammals. The fracture energy of a material can be calculated using an impact test. The opercles the great sculpin (Myoxocephalus polyacanthocephalus) and Chinook salmon (Oncorhynchus tshawytscha) were dissected, cut into uniform sizes with a laser, and subjected to a Chapry Impact test. The cross sectional areas of broken samples were used to calculate the fracture energy of the material. The mean of the nobone trials was 0.8124 m with a standard deviation of 0.00176. . Maximum and minimum values for fracture energy of acellular bone were 2877.63 J/cm2 and 1940.308 J/cm2, respectively. Maximum and minimum values for fracture energy of cellular were 2643.25 J/cm2 and 1663.49 J/cm2, respectively. The fracture energies of the acellular and cellular bone were not significantly different (p=0.3483).