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Search Publications by: Kathryn Butler (Assoc)

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Displaying 26 - 50 of 118

Developing Emergency Communication Strategies for Buildings

March 12, 2012
Author(s)
Erica D. Kuligowski, Steve M. Gwynne, Kathryn M. Butler, Bryan L. Hoskins, Carolyn Sandler
The purpose of this document is to provide the foundation for the development of a guidance document on emergency communication message content and dissemination strategies. The document answers three major questions regarding emergency communication

Structural and Electromagnetic Scenarios for Firefighter Locator Tracking Systems

September 1, 2011
Author(s)
Anthony D. Putorti Jr., Francine K. Amon, Kathryn M. Butler, Catherine A. Remley, William F. Young, Christina Spoons
One of the most important aspects of effective firefighter response to an emergency event is awareness of the location of the firefighters involved, especially in cases with limited visibility due to darkness, heavy smoke, or unfamiliar and changing

A Flame Model for Melting and Dripping Polymers

July 5, 2010
Author(s)
Kathryn M. Butler, Sergio R. Idelsohn, Julio M. Marti, Eugenio Onate, Riccardo Rossi
The versatility of polymeric materials, as demonstrated in such features as high strength, low weight, ease of processing, and capability to form into complex shapes, have led to their widespread industrial application in aircraft structures

Modeling Thermoplastic Melt Spread Over Different Flooring Materials

July 5, 2010
Author(s)
Kathryn M. Butler, Eugenio Onate, Riccardo Rossi, Julio M. Marti, Sergio R. Idelsohn
The effects of the thermal properties of three flooring materials on the spread rate of polymer melt over the surface were studied using a model based on the Particle Finite Element Method (PFEM). The high thermal conductivity of steel keeps the steel

Numerical Simulation of Polymeric Materials in UL 94 Test: Competition Between Gasification and Melt Flow / Dripping

July 5, 2010
Author(s)
Kathryn M. Butler, Florian Kempel, Bernhard Schartel, Anja Hofmann, Eugenio O?, Sergio R. Idelsohn, Riccardo Rossi, Julio M. Marti
The capability of the Particle Finite Element Method (PFEM, developed by CIMNE) to model the complex fire behaviour of polymers in the UL 94 scenario was investigated. For validation, a series of four PC/ABS blends were chosen, which covered different UL

Melting and Spread of Polymers in Fire with the Particle Finite Element Method

February 19, 2010
Author(s)
Eugenio Onate, Riccardo Rossi, Sergio R. Idelsohn, Kathryn Butler
A new computational procedure for analysis of the melting and flame spread of polymers under fire conditions is presented. The method, termed Particle Finite Element Method (PFEM), combines concepts from particle-based techniques with those of the standard

Using 3D Head and Respirator Shapes to Analyze Respirator Fit

July 19, 2009
Author(s)
Kathryn M. Butler
A computational approach to analyzing respirator fit is demonstrated using geometries generated by laser scanning, mechanical drawings, and CAD files. Three fit-related problems that can be solved using computational tools are demonstrated: 1) The study of

A Model of Melting and Dripping Thermoplastic Objects in Fire

March 17, 2009
Author(s)
Kathryn M. Butler
A model of the melting and dripping behavior of thermoplastic materials in fire is being developed using the Particle Finite Element Method (PFEM), which is capable of tracking the large changes in shape inherent to this problem in addition to solving the

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