TY - GEN
T1 - Semiconductor aspects of the oxyfuel cutting torch preheat flame
T2 - ASME 2020 15th International Manufacturing Science and Engineering Conference, MSEC 2020
AU - Martin, Christopher R.
AU - Pond, Teresa
AU - Tomas, Jacob
AU - Schmit, Jenna
AU - Miguel, Erikson
AU - Untaroiu, Alex
AU - Xu, Kemu
N1 - Funding Information:
The work presented here was made possible by award 1900698 from the National Science Foundation.
Publisher Copyright:
Copyright © 2020 ASME.
PY - 2020
Y1 - 2020
N2 - This two-part paper presents precise measurements of the ion currents passing between the torch and work piece of the preheat flame of an oxyfuel cutting torch as a means for replacing contemporary sensing suites. Part II presents the results of a novel spinning disc Langmuir probe technique to construct spatially resolved measurements of the flame’s ion density distribution. A bias voltage is applied to a .254mm diameter wire protruding from a spinning disc, and as the wire is passed through the flame, the measured currents (on the order 10µA) are collected. The process is repeated with incremental wire depths in the flame to construct the entire planar cross-sectional ion density. Measurements reveal intense ion concentrations in the inner cones that rapidly decay by an order of magnitude in the surrounding flow. The outer cone forms a hollow cylinder of weak ion concentration that declines with distance from the inner cones in a manner consistent with recombination.
AB - This two-part paper presents precise measurements of the ion currents passing between the torch and work piece of the preheat flame of an oxyfuel cutting torch as a means for replacing contemporary sensing suites. Part II presents the results of a novel spinning disc Langmuir probe technique to construct spatially resolved measurements of the flame’s ion density distribution. A bias voltage is applied to a .254mm diameter wire protruding from a spinning disc, and as the wire is passed through the flame, the measured currents (on the order 10µA) are collected. The process is repeated with incremental wire depths in the flame to construct the entire planar cross-sectional ion density. Measurements reveal intense ion concentrations in the inner cones that rapidly decay by an order of magnitude in the surrounding flow. The outer cone forms a hollow cylinder of weak ion concentration that declines with distance from the inner cones in a manner consistent with recombination.
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U2 - 10.1115/MSEC2020-8259
DO - 10.1115/MSEC2020-8259
M3 - Conference contribution
AN - SCOPUS:85100918046
T3 - ASME 2020 15th International Manufacturing Science and Engineering Conference, MSEC 2020
BT - Additive Manufacturing; Advanced Materials Manufacturing; Biomanufacturing; Life Cycle Engineering; Manufacturing Equipment and Automation
PB - American Society of Mechanical Engineers
Y2 - 3 September 2020
ER -