Delayed Failure in a Shock Loaded Alumina

Journal Article · Fri Jul 28 04:00:00 EDT 2006 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2263454· OSTI ID:20875780

Cooper, G A; Millett, J C. F. ^[1]; Bourne, N K ^[2]; Dandekar, D P ^[3]

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1. Defence Academy of the UK, Cranfield University, Shrivenham, Swindon, SN6 8LA (United Kingdom)
2. University of Manchester, Sackville Street, Manchester, M60 1QD (United Kingdom)
3. Army Research Laboratory, Weapons Materials Directorate, Aberdeen Proving Ground, Maryland 21005-5069 (United States)

Manganin stress gauges have been used to measure the lateral stress in a shock-loaded alumina. In combination with known longitudinal stresses, these have been used to determine the shear strength of this material, behind the shock front. The two-step nature of the lateral stress traces shows a slow moving front behind the main shock, behind which shear strength undergoes a significant decrease. Results also show that this front decreases markedly in velocity as the HEL is crossed, suggesting that limited plasticity occurs during inelastic deformation. Finally, comparison of measured shear strengths with other aluminas shows a high degree of agreement.

• OSTI ID: 20875780
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 845; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALUMINIUM OXIDES
COMPARATIVE EVALUATIONS
DEFORMATION
FAILURES
MANGANIN
MATERIALS TESTING
PLASTICITY
PRESSURE DEPENDENCE
SHEAR PROPERTIES
SHOCK WAVES
STRESSES
VELOCITY