Details of Grant 

EPSRC Reference:	GR/S49858/01
Title:	New methods for chatter avoidance: Prediction methodologies
Principal Investigator:	Sims, Professor ND
Other Investigators:
Researcher Co-Investigators:
Project Partners:	Boeing
Department:	Mechanical Engineering
Organisation:	University of Sheffield
Scheme:	Standard Research (Pre-FEC)
Starts:	30 June 2004	Ends:	29 August 2007	Value (£):	133,484
EPSRC Research Topic Classifications:	Manufacturing Machine & Plant
EPSRC Industrial Sector Classifications:	Aerospace, Defence and Marine Manufacturing Transport Systems and Vehicles
Related Grants:
Panel History:	Panel Date Panel Name Outcome 28 May 2003 Engineering Advanced Fellowships Interview Panel Deferred 02 May 2003 Engineering Fellowships Sift Panel 2003 Deferred
Summary on Grant Application Form
Machining accounts for approximately half of all manufacturing techniques, and its productivity is, ultimately, limited by the onset of instability known as chatter. Regenerative chatter is teh primary form of unstable self-exited vibration that can occur in milling, turning, and boring, and despite the recent research into the mechanisms of chatter, the results are rarely applied in practice. Chatter is particularly problematic in the case of the aerospace and advanced manufacturing sectors where exacting design requirements lead to ultra-high precision or high speed milling of components, with a complex geometry that are lightweight, flexible, and lack structural damping.This proposal is part of a five year program of work (and advanced fellowship) that will develop a new perspective on chatter avoidance in milling to enable enhanced productivity. The aim of this aspect of work is to develop new methods for chatter prediction by forced excitation of a workpiece during machining.
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Organisation Website:	http://www.shef.ac.uk