On control of flow instabilities in cutting of metals Academic Article

abstract

• 2015 CIRP. Large strain plastic flow in cutting of metals is studied at multiple length scales using high-speed imaging and marker techniques, complemented by particle image velocimetry and electron microscopy. Quantitative analysis of streak-lines, strain fields and microstructure, shows the flow to be often unsteady. Instabilities such as segmentation driven by ductile fracture, vortex-like flow in ductile metals, and shear banding in low-thermal diffusivity systems are elucidated using direct observations. A constrained-cutting process is demonstrated for suppressing the instabilities and unsteady flow.

authors

• Sagapuram, Dinakar

published proceedings

• CIRP ANNALS-MANUFACTURING TECHNOLOGY

author list (cited authors)

• Sagapuram, D., Yeung, H. o., Guo, Y., Mahato, A., M'Saoubi, R., Compton, W. D., Trumble, K. P., & Chandrasekar, S.

citation count

• 26

complete list of authors

• Sagapuram, Dinakar||Yeung, Ho||Guo, Yang||Mahato, Anirban||M'Saoubi, Rachid||Compton, W Dale||Trumble, Kevin P||Chandrasekar, Srinivasan

publication date

• January 2015

publisher

• Elsevier  Publisher

published in

• CIRP annals  Journal

keywords

• Deformation
• High-speed Imaging
• Machining

Digital Object Identifier (DOI)

• 10.1016/j.cirp.2015.04.059

start page

• 49

end page

• 52

volume

• 64

issue

• 1

URL

• http://dx.doi.org/10.1016/j.cirp.2015.04.059