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You searched on: Author: andrew slifka

Displaying records 31 to 40 of 47 records.
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31. Implementation and Application of a Microstructurally Based Orthotropic Hyperelastic Model of Pulmonary Artery Mechanics under Normotensive and Hypertensive Conditions
Published: 8/1/2005
Authors: Yang Zhang, Martin Dunn, Elizabeth S Drexler, Christopher N McCowan, Andrew J Slifka, Dunbar Ivy, Robin Shandas
Abstract: We implemented, validated, and applied a microstructurally based orthotropic hyperelastic constitutive model to simulate pulmonary artery mechanics under normotensive and hypoxic hypertensive conditions. The configuration of the model microstructure ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=30006

32. Comparison of Strength Properties of Normotensive and Hypertensive Rat Pulmonary Arteries
Published: 10/1/2004
Authors: Elizabeth S Drexler, Christopher N McCowan, J Wright, Andrew J Slifka, Dunbar Ivy, Robin Shandas
Abstract: A series of tests were conducted to quantify the difference in the mechanical properties of normo-and hypertensive pulmonary arteries. A bubble-test design was emplpoyed to measure the biaxial properties of a segment of artery. The test results compa ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851344

33. Static and Quasi-static Calibration of Bio-MEMS Device
Published: 10/1/2004
Authors: Andrew J Slifka, Hrishikesh V. Panchawagh, Roop L Mahajan, Dudley Finch, R. A. Rorrer
Abstract: A bio-MEMS device which has been designed to stimulate cells by oscillatory actuation in the vertical direction has been calibrated. The displacement of this device was determined experimentally by a laser interferometer when actuated by a static vol ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851346

34. An Experimental Method for Measuring Mechanical Properties of Rat Pulmonary Arteries Verified With Latex
Series: Journal of Research (NIST JRES)
Published: 6/1/2003
Authors: Elizabeth S Drexler, Andrew J Slifka, J Wright, Christopher N McCowan, Dudley Finch, Timothy P Quinn, J D McCloskey, Dunbar Ivy, Robin Shandas
Abstract: A study of the biomechanics and hemodynamics of pulmonary hypertension is incomplete without including mechanical properties data comparing healthy and diseased arterial tissue. In the initial stabe of this study, Sprague-Dawley rats will be induced ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851318

35. Thermal Conductivity Measurement of an Electron-Beam Physical Vapor-Deposition-Coating
Series: Journal of Research (NIST JRES)
Published: 4/1/2003
Authors: Andrew J Slifka, Bernard J Filla
Abstract: An industrial thermal-barrier coating designated PWA 266, processed by electron-beam physical-vapor deposition, was measured using a steady-state thermal conductivity technique. The thermal conductivity of the 7%, by mass, yttria-stabilized zirconia ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851311

36. Thermal Evaluation of Scorched Graphite-Epoxy Panels by Infrared Scanning
Series: Journal of Research (NIST JRES)
Published: 3/1/2003
Authors: Andrew J Slifka, T Hall, E S Boltz
Abstract: A simple measurement system is described for evaluating damage to graphite-dpoxy panels, such as are used in high-performance aircraft. The system uses a heating laser and infrared imaging system to measure thermal performance. thermal conductivity ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851320

37. Apparent Mobility of Interfaces in Integral Resistor Material
Published: 1/1/2003
Authors: Andrew J Slifka, John W. Drexler
Abstract: Measurements were made on an integral resistor sample that showed apparent interfacial mobility. Initial measurements were made using infrared, optical, and scanning electron microscopies. Analysis of infrared microscopy measurements showed a broad ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851240

38. Thermomechanical Effects in Embedded Passive Materials
Published: 4/1/2002
Authors: Andrew J Slifka, Elizabeth S Drexler
Abstract: Thermomechanical fatigue was measured using electron-beam moire (EBM) and infrared (IR) microscopy. A specimen was made using FR-4 printed wiring board, (PWB), a silver-filled conductive adhesive, and a carbon-filled conductive paste. Both filled p ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851232

39. Characterization of Interfaces Involving Electrically Conductive Adhesives Using Electron-Beam Moire and Infrared Microscopy
Published: 3/1/2002
Authors: Andrew J Slifka, Elizabeth S Drexler
Abstract: The complimentary techniques of electron-beam moire and infrared microscopy were used to determine the mechanical and thermal degradation of interfaces involving electrically conductive adhesives. The infrared microscopy technique was used to examin ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851290

40. Low Thermal Conductivity Vapor Deposited Zirconia Microstructures
Published: 4/1/2001
Authors: D D Hass, Andrew J Slifka, H N Wadley
Abstract: Low thermal conductivity yttria stabilized zirconia (YSZ) coatings have been grown using a low vacuum (0.20 Torr) electron beam directed vapor deposition process. In this approach, a transsonic helium jet was used to entrain and transport an evapora ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851257



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