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

被引：35

作者：

Pottier, T. ^{[1
,3
]}

Germain, G. ^{[1
]}

Calamaz, M. ^{[2
]}

Morel, A. ^{[1
]}

Coupard, D. ^{[2
]}

机构：

[1] Arts & Metiers ParisTech, LAMPA EA1427, F-49000 Angers, France

[2] Arts & Metiers ParisTech, I2M UMR5295, F-33405 Talence, France

[3] Univ Toulouse, ICA, Mines Albi, F-81013 Albi, France

来源：

EXPERIMENTAL MECHANICS | 2014年 / 54卷 / 06期

关键词：

Orthogonal cutting; Digital image correlation; Chip segmentation; Adiabatic shear band; Machining; DIGITAL IMAGE CORRELATION; CHIP FORMATION; TITANIUM-ALLOY; TEMPERATURE; SEGMENTATION; PREDICTION; MECHANICS; PATTERNS; BEHAVIOR; MOTION;

D O I：

10.1007/s11340-014-9868-0

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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.

引用

页码：1031 / 1042

页数：12

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