Non-linear ultrasonic response of plastically deformed aluminium alloy AA 7009

Autor:	J F Zhang, Y X Xiang, F.Z. Xuan, F Q Yang
Rok vydání:	2013
Předmět:	Materials science Mechanical Engineering Metallurgy Plasticity Condensed Matter Physics Stress (mechanics) Nonlinear system Mechanics of Materials Surface wave visual_art Aluminium alloy visual_art.visual_art_medium General Materials Science Ultrasonic sensor Composite material Longitudinal wave
Zdroj:	Materials Science and Technology. 29:1304-1309
ISSN:	1743-2847 0267-0836
DOI:	10.1179/1743284713y.0000000221
Popis:	Using non-linear longitudinal wave and non-linear surface wave, the effect of plastic deformation on the non-linear ultrasonic parameter of aluminium alloy AA 7009 was studied. The results reveal that the second-order non-linear coefficient () increased with increasing the plastic strain for both types of non-linear waves. A simple power–law relation was developed between the ratio of and the plastic strain. The stress exponent index was found to be ∼2·35 and 1 for the non-linear longitudinal wave and the non-linear surface wave respectively. The difference of the non-linear ultrasonic responses was likely due to the microstructural difference between the near surface material and the material far away from the surface.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1ebbca66cd561ce8c2258c453b8770bb https://doi.org/10.1179/1743284713y.0000000221 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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