SYMPOSIA PAPER Published: 01 January 2006
STP37643S

Effect of Sample Geometry on Regression Rate of the Melting Interface for Carbon Steel Burned in Oxygen

Source

Promoted-ignition testing on carbon steel rods of varying cross-sectional area and shape was performed in high pressure oxygen to assess the effect of sample geometry on the regression rate of the melting interface. Cylindrical and rectangular geometries and three different cross sections were tested and the regression rates of the cylinders were compared to the regression rates of the rectangular samples at test pressures around 6.9 MPa. Tests were recorded and video analysis used to determine the regression rate of the melting interface by a new method based on a drop cycle which was found to provide a good basis for statistical analysis and provide excellent agreement to the standard averaging methods used. Both geometries tested showed the typical trend of decreasing regression rate of the melting interface with increasing cross-sectional area; however, it was shown that the effect of geometry is more significant as the sample's cross sections become larger. Discussion is provided regarding the use of 3.2-mm square rods rather than 3.2-mm cylindrical rods within the standard ASTM test and any effect this may have on the observed regression rate of the melting interface.

Author Information

Suvorovs, T
School of Engineering Systems, Queensland University of Technology, Gardens Point, QLD, Australia
Ward, NR
School of Engineering Systems, Queensland University of Technology, Gardens Point, QLD, Australia
Wilson, R
School of Mathematics, The University of Queensland, St. Lucia, QLD, Australia
Steinberg, TA
Faculty of Built Environment and Engineering, School of Engineering Systems, Queensland University of Technology, Gardens Point, QLD, Australia
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Details
Developed by Committee: G04
Pages: 98–106
DOI: 10.1520/STP37643S
ISBN-EB: 978-0-8031-5513-8
ISBN-13: 978-0-8031-3405-8