On control of flow instabilities in cutting of metals | Academic Article individual record
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.

author list (cited authors)
Sagapuram, D., Yeung, H. o., Guo, Y., Mahato, A., M'Saoubi, R., Compton, W. D., Trumble, K. P., & Chandrasekar, S.
publication date
2015
publisher
Elsevier bv Publisher
published in
CIRP Annals Journal
keywords
  • Machining
  • Deformation
  • High-speed Imaging
citation count

18