The effect of freezing storage on the mechanical properties of myocradium
YANG Yang1, JIA Yunchao1, JING teng1, ZENG Pei1, LU Jianfei2, HE Zhaoming1,3
1. School of Fluid Machinery and Technology, Jiangsu University, Zhenjiang, Jiangsu 212013; 2. Faculty of Civil Engineering and Mechanics, Jiangsu University, Zhenjiang, Jiangsu 212013; 3. Department of Mechanical Engineering, Texas Tech University, Lubbock, USA 79409
Abstract:This study was to investigate the effect of freezing-based storage on the mechanical properties of apical tissues. Freeze the apical tissue for 48 hours and perform biaxial stretching of the frozen tissue sample and the fresh sample respectively, discuss and analyze whether the mechanical properties of the fresh sample and the frozen sample in the fiber direction and the cross fiber direction are significant difference. The mechanical parameters studied in the experiment include the peak stretch ratio in the fiber direction and the cross-fiber direction, the mechanical stretch ratio, the preload stretch ratio, the elastic modulus in the low-stress area, the elastic modulus in the high-stress area, and the anisotropy Index and ductility index. There are no statistical difference in the peak stretch ratio, mechanical stretch ratio, preload stretch ratio, elastic modulus of low stress area, elastic modulus of high stress area, anisotropy index and ductility index of fresh and unfrozen sample tissue to frozen tissue. In addition, the experiment finds that the anisotropy of frozen tissue is slightly stronger than that of fresh tissue, but fresh tissue is slightly harder than frozen tissue. Freezing-based storage has no significant effect on the mechanical properties of apical tissues.
杨阳,贾云超,荆腾,曾培,陆建飞,贺照明,. 冷冻储藏对心肌力学性能的影响[J]. 排灌机械工程学报, 2022, 40(2): 170-174.
YANG Yang,JIA Yunchao,JING teng,ZENG Pei,LU Jianfei,HE Zhaoming,. The effect of freezing storage on the mechanical properties of myocradium. Journal of Drainage and Irrigation Machinery Engin, 2022, 40(2): 170-174.