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Experimental Mechanics

Erschienen in:

01.07.2014

Sub-Millimeter Measurement of Finite Strains at Cutting Tool Tip Vicinity

verfasst von: T. Pottier, G. Germain, M. Calamaz, A. Morel, D. Coupard

Erschienen in: Experimental Mechanics | Ausgabe 6/2014

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Abstract

The present paper details a simple and effective experimental procedure dedicated to strain measurement during orthogonal cutting operations. It relies on the use of high frame-rate camera and optical microscopy. A numerical post-procedure is also proposed in order to allow particle tracking from Digital Image Correlation (DIC). Therefore strain accumulation within finite strains framework is achieved. The significant magnitude of the calculated strains is partially due to a singular side effect that leads to local material disjunction. The strain localization in the Adiabatic Shear Band (ASB) exhibits different strain paths at various locations along this band and a non-linear evolution of the strain accumulation. A focus is made on the formation mechanisms of serrated chips obtained from Ti6Al4V titanium alloy. The side observation performed during this work allow to proposed three possible scenarios to explain this very phenomenon.

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Titel: Sub-Millimeter Measurement of Finite Strains at Cutting Tool Tip Vicinity
verfasst von: T. Pottier
G. Germain
M. Calamaz
A. Morel
D. Coupard
Publikationsdatum: 01.07.2014
Verlag: Springer US
Erschienen in: Experimental Mechanics / Ausgabe 6/2014
Print ISSN: 0014-4851
Elektronische ISSN: 1741-2765
DOI: https://doi.org/10.1007/s11340-014-9868-0

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