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Effects of aspect ratio and specimen size on uniaxial failure stress of iron green bodies at high strain rates
Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya, Japan.
Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya, Japan, Nagoya Institute of Technology.
Nagoya Institute of Technology.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Mechanics of Solid Materials.ORCID iD: 0000-0002-7514-0513
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2015 (English)In: EPJ Web of Conferences, ISSN 2101-6275, E-ISSN 2100-014X, Vol. 94, article id 1060Article in journal (Refereed) Published
Abstract [en]

Powder metallurgy is used for the production of a number of mechanical parts and is an essential production method. These are great advantages such as product cost effectiveness and product uniqueness. In general, however parts created by powder metallurgy have low strength because of low density. In order to increase strength as well as density, new techniques such as high-velocity-compaction (HVC) was developed and further investigation has been conducted on improvement of techniques and optimum condition using computer simulation. In this study, the effects of aspect ratio and specimen size of iron green bodies on failure strength of uniaxial compression and failure behavior were examined using a split Hopkinson pressure Bar. The diameters of specimens were 12.5 mm and 25 mm the aspect ratios (thickness/diameter) were 0.8 and 1.2.

Place, publisher, year, edition, pages
2015. Vol. 94, article id 1060
National Category
Applied Mechanics
Research subject
Solid Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-32269DOI: 10.1051/epjconf/20159401060Local ID: 6b54b217-5ea5-40d5-9d7e-96c33bafa5caOAI: oai:DiVA.org:ltu-32269DiVA, id: diva2:1005503
Conference
International Conference on the Mechanical and Physical Behaviour of Materials under Dynamic Loading : 07/09/2015 - 11/09/2015
Note

Validerad; 2015; Nivå 1; 20150915 (parj)

; Konferensartikel i tidskriftAvailable from: 2016-09-30 Created: 2016-09-30 Last updated: 2018-04-12Bibliographically approved

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Häggblad, Hans-åkeJonsén, PärGustafsson, Gustaf
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