DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, Selim | - |
dc.contributor.author | Kang, Hyungu | - |
dc.contributor.author | Kim, Minu | - |
dc.contributor.author | Kim, Ki Jong | - |
dc.contributor.author | Lee, Jae Min | - |
dc.contributor.author | Cheong, Hae-Won | - |
dc.contributor.author | Kim, Hyoung Seop | - |
dc.contributor.author | Lee, Sunghak | - |
dc.date.accessioned | 2024-02-26T05:51:08Z | - |
dc.date.available | 2024-02-26T05:51:08Z | - |
dc.date.created | 2023-12-11 | - |
dc.date.issued | 2023-10 | - |
dc.identifier.issn | 0921-5093 | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/120392 | - |
dc.description.abstract | This study suggests that stacks of thin aluminum (Al) sheets with fine rectangular or triangular grooves are effective materials for energy absorption. The energy-absorbing performance of these materials was evaluated using a modified split Hopkinson pressure bar (SHPB). Two important energy-absorbing parameters, impact momentum (I) and maximum impact acceleration (amax), were measured from stress-time (sigma-t) curves. These parameters were found to vary with groove shape, groove cavity fraction, and specimen thickness. Both I and amax showed a continuous decrease as the specimen thickness increased from 6 to 18 mm or as the groove cavity fraction increased from 29-30% to 38-39%. Analyzing the sigma-t curve shapes revealed that the triangular grooved specimens exhibited broad-peak shaped curves, resulting in a greater reduction in I compared to the broadened plateau shape observed in the rectangular grooved specimens. Taking into account both I and amax, the overall energy-absorbing performance of the triangular grooved specimens was better than that of the rectangular grooved specimens. Notably, in the triangular grooved specimens with a high cavity fraction, the triangular embossing intruded into the groove cavities, resembling a 'zipper' mechanism, further enhancing the effectiveness of energy absorption. This study presents a promising approach for developing various grooved Al sheet stacks that exhibit reduced amax and I by strategically exploring suitable groove shapes, cavity fractions, and stack thicknesses, especially in dynamically compressed artillery environments. | - |
dc.language | English | - |
dc.publisher | ELSEVIER SCIENCE SA | - |
dc.relation.isPartOf | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | - |
dc.title | Energy-absorption analyses of grooved Al-sheet stacks using modified split Hopkinson pressure bar | - |
dc.type | Article | - |
dc.identifier.doi | 10.1016/j.msea.2023.145721 | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, v.886 | - |
dc.identifier.wosid | 001083128600001 | - |
dc.citation.title | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | - |
dc.citation.volume | 886 | - |
dc.contributor.affiliatedAuthor | Kim, Selim | - |
dc.contributor.affiliatedAuthor | Kim, Hyoung Seop | - |
dc.contributor.affiliatedAuthor | Lee, Sunghak | - |
dc.identifier.scopusid | 2-s2.0-85171422015 | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | N | - |
dc.type.docType | Article | - |
dc.subject.keywordPlus | CELL ALUMINUM FOAM | - |
dc.subject.keywordPlus | STRAIN-RATE | - |
dc.subject.keywordPlus | COMPRESSIVE RESPONSE | - |
dc.subject.keywordPlus | METAL-FOAM | - |
dc.subject.keywordPlus | BEHAVIOR | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordAuthor | Grooved Al -Sheet stacks | - |
dc.subject.keywordAuthor | Energy -absorbing performance | - |
dc.subject.keywordAuthor | Split Hopkinson pressure bar (SHPB) | - |
dc.subject.keywordAuthor | Impact momentum | - |
dc.subject.keywordAuthor | Maximum impact acceleration | - |
dc.relation.journalWebOfScienceCategory | Nanoscience & Nanotechnology | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Metallurgy & Metallurgical Engineering | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalResearchArea | Metallurgy & Metallurgical Engineering | - |
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