Abstract
All (13 pairs) of the rib bones were obtained from 4 mongrel dogs weighting 10-14kg just after sacrificing. The breaking tests using three point bending method were carried out and stress strain diagram were obtained. The breaking strength and Young's modules of each bone were determined. 3reaking strength was 23.9 (±6.6) kgf. Bending Young's modules 185.8 (±107)kgf/mm2. The cross head speed influenced to the strength, which suggested that the rib bone has viscoelastisity under the condition of stress.
