Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10673320 | CIRP Annals - Manufacturing Technology | 2015 | 4 Pages |
Abstract
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.
Related Topics
Physical Sciences and Engineering
Engineering
Industrial and Manufacturing Engineering
Authors
Dinakar Sagapuram, Ho Yeung, Yang Guo, Anirban Mahato, Rachid M'Saoubi, W. Dale Compton, Kevin P. Trumble, Srinivasan Chandrasekar,