The dynamic temperature measurement of split Hopkinson bar specimens using small thermocouples and infrared streak photography

S.M. Walley; W.G. Proud; P.J. Rae; J.E. Field

doi:doi:10.1051/dymat/2009073

All issues

Volume 1 (2009)

10.1051/dymat/2009073

Abstract

Issue		DYMAT 2009 Volume 1, 2009 DYMAT 2009 - 9th International Conference on the Mechanical and Physical Behaviour of Materials under Dynamic Loading


Page(s)		511 - 516
Section		Experimental Techniques
DOI		https://doi.org/10.1051/dymat/2009073
Published online		15 September 2009

DYMAT 2009 (2009) 511-516
DOI: 10.1051/dymat/2009073

The dynamic temperature measurement of split Hopkinson bar specimens using small thermocouples and infrared streak photography

S.M. Walley, W.G. Proud, P.J. Rae and J.E. Field

SMF Fracture and Shock Physics Group, Cavendish Laboratory, J.J. Thomson Avenue, Cambridge CB3 0HE, UK

Published online: 15 September 2009

Abstract
Two independent methods (embedded thermocouples and a commercial infrared detection system) were used to determine the temperature rise due to dynamic deformation of copper and iron specimens in a compression split Hopkinson pressure bar system. A paint with a quoted emissivity of 0.95 was used to improve the accuracy of the infrared measurements. Using this value, the two measurement methods were found to agree to within 1 K.