Scaling properties of fracture surfaces of dynamically loaded aluminium alloy specimens

Plastic strain localization and fracture of dynamically loaded metallic samples occurred during plug formation are investigated. These processes are closely related to the instability of plastic flow and can be attributed to structural-scaling transitions in mesodefect ensembles. The multiscale natu...

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Bibliographic Details
Main Authors: Lyapunova, E., Chudinov, V., Sokovikov, M., Uvarov, S., Naimark, O., Yeong-Maw Hwang, Alexandrov, S.
Format: Conference Proceeding
Language:English
Subjects:
Fractals
Materials
Rough surfaces
Surface cracks
Surface morphology
Surface roughness
Surface treatment
Online Access:Request full text
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Summary:Plastic strain localization and fracture of dynamically loaded metallic samples occurred during plug formation are investigated. These processes are closely related to the instability of plastic flow and can be attributed to structural-scaling transitions in mesodefect ensembles. The multiscale nature of defect structure allows one to use the fractal concept for quantitative analysis of both the fracture surface and the inner structure of deformed material. The scaling properties of fracture surfaces are established in terms of the roughness index (Hurst exponent) as the characteristics of strain localization and fracture.
ISSN:2150-5934
2150-5942
DOI:10.1109/IMPACT.2012.6420254