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2006•AIP conference proceedingsRequires access

New Phenomena Observed in Plate Impacts onto Alumina Bars

Tim Andrew Beno

Open publisher page 2 citations

Abstract

Steel flyer plates were used to impact alumina bars at 275 m/s, nominally. Manganin gauges were used to monitor stress waves in the bars. Geometry of the impact was varied in an attempt to extend gauge records. Gauge life was best improved by careful alignment. The longest gauge records indicated that alumina retains a strength level of about 2 GPa after initial failure. Stress levels of over 5 GPa were obtained with impact‐zone confinement.

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What this paper is about

Steel flyer plates were used to impact alumina bars at 275 m/s, nominally. Manganin gauges were used to monitor stress waves in the bars. Geometry of the impact was varied in an attempt to extend gauge records. Gauge life was best improved by careful alignment. The longest gauge records indicated that alumina retains a strength level of about 2 GPa after initial failure. Stress levels of over 5 GPa were obtained with impact‐zone confinement.

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Available abstract

Steel flyer plates were used to impact alumina bars at 275 m/s, nominally. Manganin gauges were used to monitor stress waves in the bars. Geometry of the impact was varied in an attempt to extend gauge records. Gauge life was best improved by careful alignment. The longest gauge records indicated that alumina retains a strength level of about 2 GPa after initial failure. Stress levels of over 5 GPa were obtained with impact‐zone confinement.

Key concepts: Manganin, Gauge (firearms), Materials science, Stress (linguistics), Composite material, Structural engineering, Physics, Metallurgy

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