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首页> 外文期刊>Materials and Manufacturing Processes >Fabrication and Characterization of Microscale Sensors for Strain Measurement in Flexible Polymer Heart Valve Leaflet
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Fabrication and Characterization of Microscale Sensors for Strain Measurement in Flexible Polymer Heart Valve Leaflet

机译：柔性聚合物心脏瓣膜小片中用于应变测量的微型传感器的制作与表征

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Flexible polymer heart valves are promising clinical prostheses for replacement of diseased or malfunctioned natural heart valves. However, the flexible polymer leaflets are prone to fatigue fracture, which hinders their practicality in clinical applications. In this study, microstrain sensor (gauge) for strain measurement is designed in the polyurethane (PU) thin film to measure the stress/strain in situ. In our design, the strain gauge is embedded in PU, which is different than the commercial strain gauge of sticking to the sample. The metal layer of strain gauge used in this study is gold. The overall size of the designed strain gauge is 1 mm × 1 mm × 0.1 µm, and the resistance value was measured to be 200 ±30Ω. The static test of strain gauge without damp proof shows that gauge sensitivity G was measured to be 4 and 1.8, when strain range is less than 1% and between 1-1.5%, respectively, while the static test of strain gauge with damp proof shows that gauge sensitivity G was measured to be 2.6 when strain range is less than 1.2%. The dynamic test of strain gauge was also applied in this study.View full textDownload full textKeywordsMicrofabricated strain gauge, Polyurethane, Strain distribution measurementRelated var addthis_config = { ui_cobrand: "Taylor & Francis Online", services_compact: "citeulike,netvibes,twitter,technorati,delicious,linkedin,facebook,stumbleupon,digg,google,more", pubid: "ra-4dff56cd6bb1830b" }; Add to shortlist Link Permalink http://dx.doi.org/10.1080/10426910903426000
机译：柔性聚合物心脏瓣膜是有希望的临床假体，可用于替换患病或故障的天然心脏瓣膜。然而，柔性聚合物小叶易于疲劳断裂，这阻碍了它们在临床应用中的实用性。在这项研究中，在聚氨酯（PU）薄膜中设计了用于应变测量的微应变传感器（量规），以就地测量应力/应变。在我们的设计中，应变仪嵌入在PU中，这与粘贴到样品上的商用应变仪不同。本研究中使用的应变仪的金属层是金。设计的应变仪的整体大小为1毫米×1毫米×0.1微米，而电阻值测得为200±30Ω。不带防潮应变仪的静态测试表明，当应变范围小于1％且在1-1.5％之间时，应变仪灵敏度G分别为4和1.8，而带防潮应变仪的静态测试表明，其灵敏度G分别为4和1.8。当应变范围小于1.2％时，测得的量规灵敏度G为2.6。这项研究还应用了应变仪的动态测试。查看全文下载全文关键字微细加工的应变仪，聚氨酯，应变分布测量Delicious，linkedin，facebook，stumbleupon，digg，google，更多”，发布号：“ ra-4dff56cd6bb1830b”};添加到候选列表链接永久链接http://dx.doi.org/10.1080/10426910903426000

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