Effect of target-fixture geometry on shock-wave compacted copper powders
SCIE
SCOPUS
KCI
- Title
- Effect of target-fixture geometry on shock-wave compacted copper powders
- Authors
- Wooyeol Kim; Dong-Hyun Ahn; Jae Ik Yoon; Lee Ju Park; Hyoung Seop Kim
- Date Issued
- 2018-01
- Publisher
- KOREAN INST METALS MATERIALS
- Abstract
- In shock compaction with a single gas gun system, a target fixture is used to safely recover a powder compact processed by shock-wave dynamic impact. However, no standard fixture geometry exists, and its effect on the processed compact is not well studied. In this study, two types of fixture are used for the dynamic compaction of hydrogen-reduced copper powders, and the mechanical properties and microstructures are investigated using the Vickers microhardness test and electron backscatter diffraction, respectively. With the assistance of finite element method simulations, we analyze several shock parameters that are experimentally hard to control. The results of the simulations indicate that the target geometry clearly affects the characteristics of incident and reflected shock waves. The hardness distribution and the microstructure of the compacts also show their dependence on the geometry. With the results of the simulations and the experiment, it is concluded that the target geometry affects the shock wave propagation and wave interaction in the specimen.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/92312
- DOI
- 10.1007/s12540-017-7344-y
- ISSN
- 1598-9623
- Article Type
- Article
- Citation
- METALS AND MATERIALS INTERNATIONAL, vol. 24, no. 1, page. 84 - 94, 2018-01
- Files in This Item:
- There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.