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Topic Area: Materials Science
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Displaying records 361 to 370 of 532 records.
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361. Inducing analytical orthogonality in tungsten oxide-based microsensors using materials structure and dynamic temperature control
Topic: Materials Science
Published: 1/4/2009
Authors: Kurt D Benkstein, Baranidharan Raman, David L. Lahr, John E Bonevich, Stephen Semancik
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902372

362. Comparison of Wavelet Transform and Choi-Williams Distribution to Determine Group Velocities for Different Acoustic Emission Sensors
Topic: Materials Science
Published: 12/31/2008
Author: Marvin Arnold Hamstad
Abstract: Acoustic emission (AE) sources in a plate generate dispersive Lamb waves. In this research, pencil lead breaks (PLBs) were made on an edge of a 3.1 mm thick aluminum alloy plate to generate such AE waves. The PLBs were made near the plate midplane an ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901059

363. MATRIX RELAXATION AFTER FRACTURE IN A TOUGHENED EPOXY
Topic: Materials Science
Published: 12/10/2008
Authors: Aaron M Forster, Cyril Clerici, Donald Lee Hunston
Abstract: An efficient method to increase the Mode I fracture energy of a polymer adhesive is to incorporate a rubbery phase within the glassy matrix. In general, the failure surface of a toughened polymer is characterized by cavitated rubber particles and pl ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901140

364. Self-Assembly in a Polymer Matrix and its Impact on Phase Separation
Topic: Materials Science
Published: 11/11/2008
Authors: Jack F Douglas, Jacek Dudowicz, Karl Freed
Abstract: Molecular self-assembly often occurs in the presence of long chain polymers, and we develop a theory to describe the competition between self-assembly and phase separation that gen- erally occurs in these complex uids. The theory includes a descr ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=854076

365. MATERIALS SCIENCE: Nanoscale Polymer Processing
Topic: Materials Science
Published: 10/31/2008
Authors: Christopher L Soles, Yifu Ding
Abstract: Plastics are ubiquitous in our modern world. It difficult to find a manufactured object that does not contain at least some sort polymeric (plastic) components. This ubiquity, in large part, reflects the ease with which polymers can be formed at lo ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=854472

366. Cooling Mode Fault Detection And Diagnosis Method For A Residential Heat Pump
Series: Special Publication (NIST SP)
Report Number: 1087
Topic: Materials Science
Published: 10/17/2008
Authors: Minsung Kim, Seok H. Yoon, William V Payne, Piotr A Domanski
Abstract: Performance characteristics of a R410A residential unitary split heat pump equipped with a thermostatic expansion valve (TXV) were investigated in the cooling mode under no-fault and faulty conditions. An automated method of steady-state detection w ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=861650

367. Well-Ordered Polymer Melts with 5 nm Lamellar Domains from Blends of a Disordered Block Copolymer and a Selectively Associating Homopolymer of Low or High Molar Mass
Topic: Materials Science
Published: 10/16/2008
Authors: Vijay Tirumala, August W. Bosse, Eric K Lin, Vikram Daga, Alvin Romang, Jan Ilavsky, J J. Watkins
Abstract: The use of short chain block copolymer melts as nanostructured templates for sub-10 nm domains is often limited by their low segregation strength (N). Since increasing molar mass to strengthen segregation also increases the interdomain spacin ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=853626

368. Hollow spherical supramolecular dendrimers
Topic: Materials Science
Published: 10/1/2008
Authors: Virgil Percec, Mihai Peterca, Andres E. Dulcey, Mohammad Imam, Steven D Hudson, Sami Nummelin, Peter Adelman, Paul A Heiney
Abstract: The synthesis of a library containing 12 conical dendrons that self-assemble into hollow spherical supramolecular dendrimers is reported. The design principles for this library were accessed by development of a method that allows the identification o ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=854455

369. Effects of Specimen Geometry on Fatigue-Crack Growth Rates in Pipeline Steels
Topic: Materials Science
Published: 9/29/2008
Authors: John Matthew Treinen, Philippe P. Darcis, Joseph David McColskey, R. Smith, J. Merritt
Abstract: In this study, the effect of specimen geometry on the fatigue crack growth rates (FCGR) in API X65 and X100 pipeline steels was explored using the middle tension and compact tension specimen geometries. It was found that the specimen type has little ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=854097

370. Contributions of First-Principles Calculations to Understanding Structure-Property Relationships in Perovksites
Topic: Materials Science
Published: 9/1/2008
Author: Eric J Cockayne
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=854235



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