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Details of Grant 

EPSRC Reference: GR/L88979/01
Title: HIGH SPEED FIBRE STRETCHING USING A TWO STAGE LIGHT GAS GUN
Principal Investigator: Leech, Dr C
Other Investigators:
Reid, Professor SR
Researcher Co-Investigators:
Project Partners:
Department: Mechanical, Aerospace & Manufac Eng
Organisation: UMIST
Scheme: Standard Research (Pre-FEC)
Starts: 01 May 1998 Ends: 31 July 2001 Value (£): 204,281
EPSRC Research Topic Classifications:
Eng. Dynamics & Tribology Materials testing & eng.
EPSRC Industrial Sector Classifications:
No relevance to Underpinning Sectors
Related Grants:
Panel History:  
Summary on Grant Application Form
A two stage light gas gun has been commissioned and designed at UMIST; this is capable if launching a range of projectile up to 25gm at velocities of 1km/s. Various projectiles are transoprted along the gun barrel in a sabot which is shed or stripped in the sabot chamber.This project will evaluate and develop a specific type of projectile/sabot; a very small projectile is located at the front of the cabot, the latter being used as a cannister for a coil of fibre or yarn. The sabot will continues and extract the other end at speeds of up to 1km/s. This mechanism has been tested and functions well. Witness plated have been used to measure the progress and decelleration of the projectile, 30-50cm of Twaron yarn being the payload, giving a typical strain rate of 3000/s.Instrumentation to measure the fibre/yarn force-extension behaviour will be developed. Fibre loads will be measured by strain gauging in the sabot catcher and activated on contact; some preliminary designs have been tested and have performed well. Photography will be used for fibre extension.
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