On a discrepancy in modulus of elasticity as determined from separate resonance frequencies of a bar sintered from copper-coated iron powder

Autor(en)

M Kupkova, Martin Kupka, Susanne Strobl, M Cerny, Golta Khatibi, Christian Gierl

Abstrakt

Iron powder particles were coated with a copper, compacted into a bar shape, sintered and machined. Bars were caused to resonate longitudinally, transversely edgewise and flatwise. Three separate determinations of elastic modulus were made from the resonance frequencies of these modes. Three different values of elastic modulus were obtained for each of the bars. The nature of the differences indicates that the bars possess an inherent "layered" structure with stiffness graded transversely to the compaction direction. This supports a recently considered hypothesis about the behaviour of powders. © 2007 Acta Materialia Inc.

Organisation(en)

Physik Nanostrukturierter Materialien

Externe Organisation(en)

Slovenian Academy of Sciences and Arts, Technische Universität Wien, Czech Academy of Sciences

Journal

Scripta Materialia

Band

57

Seiten

639-642

Anzahl der Seiten

4

ISSN

1359-6462

DOI

https://doi.org/10.1016/j.scriptamat.2007.06.001

Publikationsdatum

2007

Peer-reviewed

Ja

ÖFOS 2012

1030 Physik, Astronomie

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/90e98bf2-364a-4c70-97d2-21646d87f008