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Please use this identifier to cite or link to this item: http://hdl.handle.net/1903/12799

Title: FORENSIC INVESTIGATION TECHNIQUES FOR INSPECTING ELECTRICAL CONDUCTORS INVOLVED IN FIRES FOR ARC AND MELT BEADS
Authors: Hussain, Nasir
Advisors: Sunderland, Peter B
Department/Program: Fire Protection Engineering
Type: Thesis
Sponsors: Digital Repository at the University of Maryland
University of Maryland (College Park, Md.)
Subjects: Engineering
Keywords: Arc
Beads
Copper
Energized
Non-Energized
Wires
Issue Date: 2012
Abstract: The objective of this research was to determine, experimentally, if distinguishing characteristics exist between the beads formed on energized and non-energized wires exposed to various thermal insults. Most of research published in the literature has not tested energized and non-energized wires under the same thermal conditions. The tests in this study were conducted using convective, radiative and combined convective/radiative thermal exposures. Wires were tested in both energized and non-energized states. Energized wires were tested under "load" and "no load" conditions. Beads formed on both the energized and non-energized wires as results of thermal exposure. Beads were analyzed externally and internally with stereo microscope, SEM/EDS, and a metallurgical microscope. No clear trends or distinguishing visual or microscopic characteristics between the beads formed on energized and non-energized wires were found. The bead analysis methods used during this research showed that it is not possible to distinguish between the beads formed on energized and non-energized wires exposed to various thermal insults.
URI: http://hdl.handle.net/1903/12799
Appears in Collections:UMD Theses and Dissertations
Fire Protection Engineering Theses and Dissertations

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