Correlation between compression, tensile and tearing tests on healthy and calcified aortic tissues
Correlation between compression, tensile and tearing tests on healthy and calcified aortic tissues
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DOI：
10.1016/j.medengphy.2008.01.006
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发表时间：
2008-11-01
影响因子：
2.2
通讯作者：
Sloten, Jos Vander
中科院分区：
文献类型：
--
作者：
Walraevens, Joris;Willaert, Bert;Sloten, Jos Vander
在钙化组织中进行的吻合比在健康组织中进行的吻合撕裂得快。本研究开发并验证了一种体外非破坏性方法来区分健康和钙化主动脉组织。单轴无侧限压缩试验能够区分健康主动脉和钙化主动脉（p < 0.01）。在应变水平为10%时，人工钙化猪主动脉组织的压缩e模量为227 +/- 34 kPa，健康猪主动脉组织的压缩e模量为147 +/- 15 kPa。钙化主动脉组织的抗拉强度低于健康猪主动脉组织（p < 0.05）。人工钙化和健康猪主动脉组织的极限抗拉强度分别为1.34 +/- 0.18 MPa和1.55 +/- 0.31 MPa。钙化主动脉组织抗撕裂性明显低于正常主动脉组织（p < 0.05）。人工钙化和健康猪主动脉组织的抗撕裂性分别为1.78 +/- 0.33 N/mm和2.16 +/- 0.64 N/mm。(c) 2008年合同。Elsevier Ltd.出版。版权所有。
An anastomosis performed in calcified tissues tears up faster than in healthy tissues. This study develops and validates an in vitro non-destructive method to distinguish healthy from calcified aortic tissues.An uniaxial unconfined compression test is able to distinguish healthy from calcified aortas (p < 0.01). The compressive E-modulus at a strain level of 10% is 227 +/- 34 kPa for artificially calcified and 147 +/- 15 kPa for healthy porcine aortic tissues. Calcified aortic tissues have a lower tensile strength than healthy porcine aortic tissues (p < 0.05). The ultimate tensile strength is 1.34 +/- 0.18 MPa and 1.55 +/- 0.31 MPa for artificially calcified and healthy porcine aortic tissues respectively. Calcified aortic tissues have a lower resistance to tearing than healthy aortic tissues (p < 0.05). The resistance to tearing is 1.78 +/- 0.33 N/mm and 2.16 +/- 0.64 N/mm for artificially calcified and healthy porcine aortic tissues respectively. (C) 2008 IPEM. Published by Elsevier Ltd. All rights reserved.