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Effects of impact velocity on the dynamic fragmentation of rigid-brittle projectiles and ceramic composite armors
- Source :
- Latin American Journal of Solids and Structures v.18 n.8 2021, Latin American journal of solids and structures, Associação Brasileira de Engenharia e Ciências Mecânicas (ABCM), instacron:ABCM, Latin American Journal of Solids and Structures, Volume: 18, Issue: 8, Article number: e410, Published: 29 NOV 2021
- Publication Year :
- 2021
- Publisher :
- FapUNIFESP (SciELO), 2021.
-
Abstract
- The silicon carbide (SiC)/metal composite armors with the composite cover on the front of the SiC plate were impacted by 12.7mm armor piercing incendiary (API) projectiles at velocities from 412.6m/s to 802.2m/s. The resulting projectile core and ceramic fragments were collected and then screened through a range of standard sieving screens. The mass distributions of fragments produced by projectile and ceramic impacting each other were obtained. The failure mechanism of the rigid-brittle core of 12.7mm API projectile after impacting SiC/metal composite armor was studied by examination of the failed core. The results show that the cumulative mass of core and ceramic fragments follow the Schuhmann distribution law. With the increase of impact velocity, the mass proportion of small core fragments increases, while for ceramic fragments, the mass proportion of fragments in different fractions does not change. The failure mechanism of the large equivalent diameter fragment ( >8mm) is tensile brittle fracture mainly. In contrast, the local plastic shear fracture exists on the fragments with an equivalent diameter of less than 2mm.
- Subjects :
- Materials science
Projectile
Mechanical Engineering
Fragmentation (computing)
Aerospace Engineering
Ocean Engineering
Impact velocity
Brittleness
Rigid-brittle projectile
Fragmentation
Mechanics of Materials
Automotive Engineering
Statistical analy sis
Ceramic composite
General Materials Science
Composite armor
Composite material
Ballistic tests
Civil and Structural Engineering
Subjects
Details
- ISSN :
- 16797825 and 16797817
- Volume :
- 18
- Database :
- OpenAIRE
- Journal :
- Latin American Journal of Solids and Structures
- Accession number :
- edsair.doi.dedup.....adc3fc1f5454f270731834708bcce5ea