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Kinematic fields measurement during Ti-6Al-4V chip formation using new high-speed imaging system

Article dans une revue avec comité de lecture
Auteur
ZOUABI, Haythem
1002421 Institut de Mécanique et d'Ingénierie [I2M]
ccCALAMAZ, Madalina
1002421 Institut de Mécanique et d'Ingénierie [I2M]
WAGNER, Vincent
103181 Laboratoire Génie de Production [LGP]
CAHUC, Olivier
1002421 Institut de Mécanique et d'Ingénierie [I2M]
DESSEIN, Gilles
103181 Laboratoire Génie de Production [LGP]

URI
http://hdl.handle.net/10985/23364
DOI
10.1007/s00170-022-10575-8
Date
2023-01
Journal
The International Journal of Advanced Manufacturing Technology

Résumé

Orthogonal cutting on Ti-6Al-4V produces segmented chips which results from localized deformation within the Primary Shear Zone (PSZ). For in situ visualization of the material flow during Ti-6Al-4V chip formation, a new high-speed optical system is proposed. Difficulties arise from the submillimetric size of the cutting zone. Therefore, a dedicated optical system with coaxial illumination is designed allowing for local scale analysis of chip formation. In this paper, the cutting forces were measured highlighting the unsteady nature of Ti-6Al-4V chip segmentation. For kinematic fields measurement, a novel method of Digital Image Correlation (DIC) technique is applied on the recorded images from the cutting zone. It allows for the identification of the localized deformation bands. Then, the level of the cumulative strain fields reached in the PSZ was presented and analyzed. The effect of the rake angle on the strain fields was studied. Using a 0∘ rake angle, the segment chip was found to be more subjected to deformation than in the case using 15∘. Accuracy of the measured strain fields was discussed function of the main source of errors. In addition, the chip morphology and microstructure were investigated with a scanning electron microscopy (SEM). It shows crack opening along the PSZ and high material failure near the tool-chip interface which explains the difficulties of DIC application in the context of kinematic fields measurement during orthogonal cutting. Finally, correlation between the measured strain fields and the mean value of the chip segment width was made.

Fichier(s) constituant cette publication

Nom:
I2M_IJAMT_Calamaz_2023.pdf
Taille:
9.783Mo
Format:
PDF
Fin d'embargo:
2023-06-01
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  • Institut de Mécanique et d’Ingénierie de Bordeaux (I2M)

Documents liés

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  • Analyse de la sensibilité et des domaines de validité des modélisations analytiques de la coupe. 
    Communication avec acte
    YOUSFI, Wiliam; LAHEURTE, Raynald; DARNIS, Philippe; CAHUC, Olivier; ccCALAMAZ, Madalina (2013)
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  • Cutting Forces Prediction in the Dry Slotting of Aluminium Stacks 
    Article dans une revue avec comité de lecture
    SALGUERO, Jorge; ccCALAMAZ, Madalina; BATISTA, Moises; ccGIROT, Franck; MARCOS, Mariano (Trans Tech Publications Inc, 2014)
    Cutting forces are one of the inherent phenomena and a very significant indicator of the metal cutting process. The work presented in this paper is an investigation of the prediction of these parameters in slotting processes ...
  • Cutting Forces Parametric Model for the Dry High Speed Contour Milling of Aerospace Aluminium Alloys 
    Article dans une revue avec comité de lecture
    SALGUERO, Jorge; BATISTA, Moises; ccCALAMAZ, Madalina; ccGIROT, Franck; MARCOS, Mariano (Elsevier, 2013)
    Cutting forces is one of the most important outputs in material removal machining processes. Their values depend on a large number of parameters, such as the cutting tool material and geometry, the workpiece material or ...
  • Strain field measurement in orthogonal machining of a titanium alloy 
    Article dans une revue avec comité de lecture
    ccCALAMAZ, Madalina; ccCOUPARD, Dominique; ccGIROT, Franck (Trans Tech Publications, 2012)
    Improving the cutting processes by optimizing operating parameters necessarily involves understanding the thermo-mechanical mechanisms generated during chip formation. For this, numerical simulations are used to obtain ...
  • A new material model for 2D numerical simulation of serrated chip formation when machining titanium alloy Ti-6Al-4V 
    Article dans une revue avec comité de lecture
    ccCALAMAZ, Madalina; ccCOUPARD, Dominique; ccGIROT, Franck (Elsevier, 2008)
    A new material constitutive law is implemented in a 2D finite element model to analyse the chip formation and shear localisation when machining titanium alloys. The numerical simulations use a commercial finite element ...

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