Determination of chip speed and shear strain rate in primary shear zone using digital image correlation (DIC) in linear-orthogonal cutting experiments

Thimm, Benedikt; Glavas, Ante; Reuber, Martin; Christ, Hans‐Jürgen

doi:10.1016/j.jmatprotec.2020.116957

Cited by 23 publications

(6 citation statements)

References 15 publications

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“…List et al 103 focused on high‐speed cutting of a mild steel to analyze the strain and strain rate distributions by observing the chip using a high‐speed camera system. Thimm et al 104 studied the chip formation and the shear strain rate of AISI 1045 steel at several cutting speeds, uncut chip thickness, and rake angle using double‐frame camera devices. Harzallah et al 41 described the use of a bispectral imaging apparatus to obtain the kinematic and thermal fields simultaneously in orthogonal cutting.…”

Section: Dynamics Of Chip Formationmentioning

confidence: 99%

Dynamics of chip formation during the cutting process using imaging techniques: A review

Nie

Yang

Zhang

et al. 2022

Int Journal of Mech Sys Dyn

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Imaging techniques have been widely implemented to study the dynamics of chip formation. They can offer a direct method and a full field measurement of the cutting process, providing kinematic information of the chip formation process. In this article, the state of the art of the imaging techniques reported in the literature has been summarized and analyzed. The imaging techniques have been applied to study the chip formation mechanism, friction behavior, strain/strain rate, and stress fields. Furthermore, the study of surface integrity has been advanced by deriving the thermo‐mechanical loading, subsurface deformation, and material constitutive model from the imaging technique. Finally, achievements in the area of imaging techniques have been summarized, followed by future directions for their application in the study of surface integrity.

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Section: Dynamics Of Chip Formationmentioning

confidence: 99%

Dynamics of chip formation during the cutting process using imaging techniques: A review

Nie

Yang

Zhang

et al. 2022

Int Journal of Mech Sys Dyn

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“…The study performed by Thimm et al [6] showed a newly developed experimental test setup. This setup was based on optical measurements using a coupled system containing a high-speed camera and a microscope.…”

Section: Introductionmentioning

confidence: 99%

The Influence of Cutting Parameters on Plastic Deformation and Chip Compression during the Turning of C45 Medium Carbon Steel and 62SiMnCr4 Tool Steel

et al. 2022

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The paper deals with the issue of cutting zone and chip compression. The aim was to analyse the microstructure transverse section of the cutting zone on a metallographic cut, due to determined values of chip compression and plastic deformation, which affect the cutting process efficiency. The tested cutting tool material was coated with cemented carbide. The selected workpiece materials were C45 medium carbon steel of ISO grade and 62SiMnCr4 tool steel of ISO (W.Nr. 1.2101) grade. In the experiments, a DMG CTX alpha 500 turning centre was used. The cutting speed and feed were varied, and the depth of the cut was kept constant during the turning. The plastic deformation and chip compression determine the efficiency of the cutting process. The higher compression requires more work to perform the process and, therefore, it requires more energy for doing so. With the increase of the cutting speed, the deformation for C45 steel is decreased. The rapid deformation reduction was observed when the cutting speed was increased from 145 m/min to 180 m/min. Generally, deformation is decreasing with the increase of the feed. Only at a cutting speed of 145 m/min was the deformation elevation observed, when the feed was increased from 0.4 mm to 0.6 mm. During the turning of the 62SiMnCr4 tool steel we observed an error value at a cutting speed of 145 m/min and a feed of 0.4 mm was the middle cutting parameter. However, feed dependence was clear: With an increase of the feed, the plastic deformation was decreasing. This decreasing was more rapid with the increasing of the cutting speed. Besides plastic deformation, there was analysed chip compression as well. With the increasing of the cutting speed, there was a decrease of the chip compression. Due to a lack of information in the area of the chip compression and the plastic deformation in the cutting process, we decided to investigate the cutting zone for the turning of tool steels 62SiMnCr4, which was compared with the reference steel C45. The results could be applied to increase the efficiency of the process and improvement of the surface integrity.

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“…This group of titanium alloys is interesting for aerospace applications owing to their high ultimate strength with a high fracture strain Semiatin (1998, 1999), Kolli and Devaraj (2018). During fabrication operations, titanium alloys are subjected to severe loading conditions, namely high temperatures (higher than 1000 • C (de Buruaga et al, 2018)), high strain rates (around 10 5 s −1 (Thimm et al, 2021)) and large strains (Abukhshim et al, 2006;Wu and To, 2015;Childs et al, 2018). The thermomechanical behavior of titanium alloys under such conditions is quite complex, mostly because many metallurgical phenomena may impact microstructure development.…”

Section: Introductionmentioning

confidence: 99%

A crystal plasticity-based constitutive model for near-β titanium alloys under extreme loading conditions: Application to the Ti17 alloy

Boubaker

Mareau

Ayed

et al. 2022

Mechanics of Materials

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Determination of chip speed and shear strain rate in primary shear zone using digital image correlation (DIC) in linear-orthogonal cutting experiments

Cited by 23 publications

References 15 publications

Dynamics of chip formation during the cutting process using imaging techniques: A review

Dynamics of chip formation during the cutting process using imaging techniques: A review

The Influence of Cutting Parameters on Plastic Deformation and Chip Compression during the Turning of C45 Medium Carbon Steel and 62SiMnCr4 Tool Steel

A crystal plasticity-based constitutive model for near-β titanium alloys under extreme loading conditions: Application to the Ti17 alloy

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