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Fire

Materials flammability

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Displaying 76 - 100 of 141

Cup-Burner Flame Structure and Extinguishment by C2HF5 in Microgravity

September 26, 2012
Author(s)
Gregory T. Linteris, Fumiaki Takahashi, Viswanath R. Katta, Oliver Meier
The effects of fire-extinguishing agent C2HF5 (pentafluoroethane, HFC-125) added to a coflowing airstream on the structure and extinguishing processes of microgravity cup-burner flames have been studied numerically. Propane and a propane-ethanol-water fuel

Factors Influencing the Smoldering Performance of Polyurethane Foam

September 26, 2012
Author(s)
Mauro Zammarano, Szabolcs Matko, Roland H. Kraemer, Rick D. Davis, Jeffrey W. Gilman, Shivani N. Mehta
The objective of this study was to evaluate whether polyurethane foam (PUF) could be produced as a standard reference material for ultimate use in a standard test intended to ensure the smoldering performance of commercially available upholstered furniture

Unwanted Combustion Enhancement by C6F12O Fire Suppressant

August 7, 2012
Author(s)
Gregory T. Linteris, Valeri I. Babushok, Peter B. Sunderland, Fumiaki Takahashi, Viswanath R. Katta, Oliver Meier
Several agents are under consideration to replace CF3Br for use in suppressing fires in aircraft cargo bays. In a Federal Aviation Administration (FAA) performance test simulating the explosion of an aerosol can, however, the replacements, when added at

Ionic Liquid Facilitated Introduction of Functional Materials into Biopolymer Polymer Substrates

August 2, 2012
Author(s)
Shonali Nazare, Jeffrey W. Gilman, Mauro Zammarano, Luke Haverhals, W.Matthew Reichert, Hugh De Long, Paul C. Trulove
In addition to being efficient solvents for biopolymers, several ionic liquids (ILs) have been shown to be effective solvents for synthetic polymers such as meta-aramids, i.e., Nomex ® (1-5). In this report, meta-aramid/cotton composites are generated by

Combustion Properties of Halogenated Fire Suppressants

August 1, 2012
Author(s)
Gregory T. Linteris, Valeri I. Babushok, Oliver Meier
Previous experimental studies have shown that some halogenated fire suppressant agents added to hydrocarbon-air systems can enhance the combustion. For example, their addition to the air stream can widen the flammability limits of lean mixtures, and

A Literature Review of the Effects of Fire Smoke on Electrical Equipment

July 31, 2012
Author(s)
Richard D. Peacock, Thomas G. Cleary, Paul A. Reneke, Daniel Murphy
A review is presented of the state of the art of smoke production measurement, prediction of smoke impact as part of computer-based fire modeling, and measurement and prediction of the impact of smoke through deposition of soot on and corrosion of

Absorption and Reflection of Infrared Radiation by Polymers in Fire-Like Environments

July 17, 2012
Author(s)
Gregory T. Linteris, Mauro Zammarano, Boris Wilthan, Leonard M. Hanssen
In large-scale fires, the input of energy to burning materials occurs predominantly by radiative transfer. The in-depth absorption of radiant energy by a polymer influences its ignition time and burning rate. The present investigation examines two methods

A review of fire blocking technologies for soft furnishings

April 23, 2012
Author(s)
Shonali Nazare, Rick D. Davis
Fire barrier fabrics are expected to play an increasingly important role in complying with existing and proposed soft furnishing flammability regulations. The number of commercial fire blocking technologies is large in order to accommodate the vast

Prediction of the mass loss rate of polymer materials: Impact of residue formation

April 21, 2012
Author(s)
Gregory T. Linteris, Bernhard Schartel, Florian Kempel, Stanislav Stoliarov, Richard E. Lyon, Richard N. Walters, Anja Hofmann
Two different numerical simulation tools, Fire Dynamic Simulator (FDS) and ThermaKin, are investigated with respect to their capability to predict the mass loss rate of polymer materials exposed to different fires. For validation, gasification apparatus

Char Forming Behavior of Nanofibrillated Cellulose Treated with Glycidyl Phenyl POSS

April 15, 2012
Author(s)
Douglas M. Fox, Jieun Lee, Mauro Zammarano, Dimi Katsoulis, Donald V. Eldred, Luke Haverhals, Paul C. Trulove, Hugh C. De Long, Jeffrey W. Gilman
Cellulose-reinforced composites have received much attention due to their structural reinforcing, light weight, biodegradable, non-toxic, low cost and recyclable characteristics. However, the tendency for cellulose to aggregate and its poor dispersion in

Flexible polyurethane foam with well characterized and reproducible smoldering

March 24, 2012
Author(s)
Mauro Zammarano, Szabolcs Matko, Rick D. Davis, Roland H. Kraemer
Smoldering is a self-sustaining heterogeneous oxidation reaction that induces a slow, low temperature, flameless combustion.1 Flexible polyurethane foams (PUF) are particularly prone to smoldering due to their high air permeability and low density. In this

Annual Report to Sponsor: Understanding Unwanted Combustion Enhancement by Potential Halon Replacements

February 3, 2012
Author(s)
Gregory T. Linteris, Jeffrey A. Manion, Donald R. Burgess Jr., Iftikhar A. Awan, Peter B. Sunderland, John L. Pagliaro
This year, we continued work to numerically model the behavior of the Halon replacements in the FAA Aerosol Can Test (FAA-ACT) to understand why they are causing more overpressure rather than flame extinction. The goal is to understand the process to

Effects of Fire Suppressants on Ignition Characteristics of Propane-Air Mixtures

December 6, 2011
Author(s)
Gregory T. Linteris, Viswanath R. Katta, Fumiaki Takahashi, Harsha K. Chelliah, Oliver Meier
A numerical investigation is performed for understanding the ignition behaviors of CF3Br and R- 125 fire-suppressing agents in propane-air-agent mixtures. Two types of simulations are considered in an attempt to provide insight into the FAA’s Aerosol Can
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