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Displaying 1251 - 1275 of 3876

Evaluating a Ranging Protocol For 3D Imaging Systems

September 19, 2007
Author(s)
Geraldine S. Cheok, Kamel S. Saidi, Alan M. Lytle
In 2006, the ASTM E57 committee was established to develop standards for 3D imaging systems. A 3D imaging system is a non-contact instrument that is used to measure the range and bearing to and/or the 3D coordinates of points on an object or within a

Feasibility of Using a Concrete Mixing Truck as a Rheometer(Orlando, Florida)

September 19, 2007
Author(s)
Chiara F. Ferraris, Roy Cooley, Joe Grein, Max A. Peltz, Michael Topputo, Steve Verdino
The goal of the tests reported here was to further determine the feasibility of using a concrete mixing truck as a rotational rheometer. This work is the continuation of preliminary tests [ , ] that seemed to indicated that the yield stress and the plastic

Cement and Concrete Materials Research at the National Institute of Standards and Technology (NIST)

September 5, 2007
Author(s)
Edward J. Garboczi, Dale P. Bentz, Jeffrey W. Bullard, Chiara F. Ferraris, Nicos Martys, Max A. Peltz, Sudalin Rodrigues, Paul E. Stutzman, Kenneth A. Snyder, John A. Winpigler
The materials science of cement and concrete is the focus of the Inorganic Materials Group at the National Institute of Standards and Technology (NIST). These experimental and computational research efforts include component and finished materials

Modeling Polymer Melt Flow Using the Particle Finite Element Method

September 5, 2007
Author(s)
Kathryn M. Butler, E Onate, S R. Idelsohn, R Rossi
A new particle-based approach is applied to the modeling of experiments on the effects of the melt flow behavior of thermoplastics. The Particle Finite Element Method (PFEM) combines convection of particles by the flow field with a finite element solution

Fatal Training Fires: Fire Analysis for the Fire Service

September 3, 2007
Author(s)
Daniel M. Madrzykowski
The National Institute of Standards and Technology (NIST) has investigated the fire conditions of two very different fire training incidents that resulted in the loss of life. One incident occurred in an acquired structure and the other occurred in a

New Approach to Ventilation Measurements in Enclosure Fires

September 3, 2007
Author(s)
Rodney A. Bryant
The application of Stereoscopic Particle Image Velocimetry (SPIV) is a new approach to quantifying the ventilation in enclosure fires. Stereoscopic PIV is a non-intrusive optical measurement technique which measures the displacement of tracer particles in

Benefit-Cost Analysis of Residential Fire Sprinkler Systems

September 2, 2007
Author(s)
David T. Butry, M H. Brown, S Fuller
This report documents a benefit-cost analysis performed to measure the expected present value of net benefits resulting from the installation of a multipurpose network fire sprinkler system in a newly-constructed, single-family house. The benefits and
Displaying 1251 - 1275 of 3876
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