Robust, High Sensitivity, Dynamic Wall Shear Sensors for Flow Diagnostics
用于流量诊断的坚固、高灵敏度、动态壁剪切传感器
基本信息
- 批准号:0510238
- 负责人:
- 金额:--
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2005
- 资助国家:美国
- 起止时间:2005-08-15 至 2010-07-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Abstract0510238PI: Pavlos Vlachos, Virginia TechWall shear stress measurements and the contribution of shear stresses to the viscous drag of air and water vehicles are critically important for numerous applications. The sensitivity and accuracy needed to quantify the wall shear stresses in complex unsteady flows is not attainable with the existing state-of-the-art measurement technologies. This research effort provides a paradigm shift in direct sensing of wall shear stresses by employing ionomeric electroactive polymer transducers. Preliminary results demonstrate that this active material exhibits exceptional sensitivity to flow-induced shear stress with high accuracy and high frequency response. In addition, it allows fabrication of miniature flush mountable sensors that eliminate moving parts increasing robustness, ease of implementation and reducing cost. Ionic polymer transducers have never been used for wall shear sensing thus the electromechanical coupling mechanism that provides shear transduction is not understood. This program will determine the fundamental sensing properties of ionic polymer transducers under wall shear will improve sensor fabrication and packaging and will develop a methodology for high frequency dynamic calibration. A variety of possible applications ranging from biofluids to classical aerodynamics will be explored. This is a project supported under the Sensor Initiative NSF 05-526.
Pavlos Vlachos,Virginia TechWall剪切应力测量和剪切应力对空中和水上飞行器的粘性阻力的贡献对于许多应用是至关重要的。 在复杂的非定常流动中,用现有的最先进的测量技术来量化壁面剪应力所需的灵敏度和准确度是无法达到的。这项研究工作提供了一个范例的转变,直接传感壁面剪切应力采用离聚物电活性聚合物换能器。初步结果表明,这种活性材料具有卓越的灵敏度,流动引起的剪切应力与高精度和高频率响应。此外,它允许制造微型齐平安装传感器,消除移动部件,增加鲁棒性,易于实施并降低成本。离子聚合物换能器从未用于壁剪切感测,因此提供剪切转换的机电耦合机制不被理解。 该项目将确定离子聚合物传感器在壁面剪切下的基本传感特性,将改进传感器的制造和包装,并将开发一种高频动态校准方法。从生物流体到经典空气动力学的各种可能的应用将被探索。这是一个由传感器倡议NSF 05-526支持的项目。
项目成果
期刊论文数量(0)
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Pavlos Vlachos其他文献
FLOW AND BIOMECHANICS QUANTIFICATION IN THE SINGLE VENTRICLE [SV] HEART
- DOI:
10.1016/s0735-1097(22)02357-9 - 发表时间:
2022-03-08 - 期刊:
- 影响因子:
- 作者:
Brett Meyers;Melissa Brindise;Mark Payne;Pavlos Vlachos - 通讯作者:
Pavlos Vlachos
Acute haloperidol poisoning in children
- DOI:
10.1016/s0022-3476(78)81253-0 - 发表时间:
1978-12-01 - 期刊:
- 影响因子:
- 作者:
Constantinos A. Sinaniotis;Panayiotis Spyrides;Pavlos Vlachos;Constantinos Papadatos - 通讯作者:
Constantinos Papadatos
DETECTING ABNORMAL LEFT VENTRICULAR FUNCTION USING GRADIENT BOOSTING LEARNING
- DOI:
10.1016/s0735-1097(22)02982-5 - 发表时间:
2022-03-08 - 期刊:
- 影响因子:
- 作者:
Brett Meyers;Griffin Paul;Pavlos Vlachos - 通讯作者:
Pavlos Vlachos
DETECTING ATRIAL FIBRILLATION IN ECGS USING CORRELATION-BASED FEATURES AND MACHINE LEARNING
- DOI:
10.1016/s0735-1097(22)01041-5 - 发表时间:
2022-03-08 - 期刊:
- 影响因子:
- 作者:
Brett Meyers;Melissa Brindise;Ruhi Sharmin;Jiacheng Zhang;Pavlos Vlachos - 通讯作者:
Pavlos Vlachos
Left Ventricular Systolic Circumferential Deformation is Associated with Left Ventricular Diastolic Apical Suction
- DOI:
10.1016/j.cardfail.2013.08.469 - 发表时间:
2013-10-01 - 期刊:
- 影响因子:
- 作者:
Takahiro Ohara;Hiroyuki Iwano;Min Pu;Brett Meyers;Charonko John;Pavlos Vlachos;William Little - 通讯作者:
William Little
Pavlos Vlachos的其他文献
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{{ truncateString('Pavlos Vlachos', 18)}}的其他基金
Collaborative Research: Flying snakes: fluid mechanics of deforming articulated bodies
合作研究:飞蛇:关节体变形的流体力学
- 批准号:
2027532 - 财政年份:2020
- 资助金额:
-- - 项目类别:
Standard Grant
Collaborative Proposal: Long-term dynamics of Water-entry
合作提案:进水的长期动态
- 批准号:
1335957 - 财政年份:2013
- 资助金额:
-- - 项目类别:
Continuing Grant
NSF/FDA SIR: Development of new measurement tools for accurate estimation of wall-shear stress in medical devices using Particle Image Velocimetry (PIV) methods
NSF/FDA SIR:开发新的测量工具,使用粒子图像测速 (PIV) 方法准确估计医疗器械中的壁剪切应力
- 批准号:
1239265 - 财政年份:2012
- 资助金额:
-- - 项目类别:
Standard Grant
CAREER: Arterial Flow Dynamics-Effects of Pulsatility, Compliance and Curvature
职业:动脉血流动力学 - 搏动性、顺应性和曲率的影响
- 批准号:
0547434 - 财政年份:2006
- 资助金额:
-- - 项目类别:
Continuing Grant
MRI: Development of a Spatiotemporal Velocimetry with Simultaneous Size Measurements for Polydispersed Multi-Phase Flows
MRI:开发同时测量多分散多相流尺寸的时空测速仪
- 批准号:
0521102 - 财政年份:2005
- 资助金额:
-- - 项目类别:
Standard Grant
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