The measurement of specimen surface temperature in high-speed tension and torsion tests
作者： D.A.S. Macdougall , J. Harding
DOI: 10.1016/S0734-743X(98)00007-4
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摘要: Abstract A radiometric technique has been developed capable of measuring specimen surface temperatures as low 25°C with a time resolution ∼1 μs. The application this to SHPB tests at strain rates the order 1000/s in both tension and torsion is described. In test results are obtained during uniform deformation, using single element radiometer, localised deformation onset fracture, 12-element radiometer. same radiometer was used obtain temperature distribution along each half broken immediately after fracture. proportion work converted heat, β , calculated data from found vary increasing plastic approximately 0.2 approaching 0.7.
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sci-hub.se 参考文章(12)
Q Xue, L T Shen, Y L Bai, A modified split Hopkinson torsional bar in studying shear localization Measurement Science and Technology. ,vol. 6, pp. 1557- 1565 ,(1995) , 10.1088/0957-0233/6/11/002
Alan T. Zehnder, A model for the heating due to plastic work Mechanics Research Communications. ,vol. 18, pp. 23- 28 ,(1991) , 10.1016/0093-6413(91)90023-P
N. Aravas, K-S. Kim, F. A. Leckie, On the Calculations of the Stored Energy of Cold Work Journal of Engineering Materials and Technology-transactions of The Asme. ,vol. 112, pp. 465- 470 ,(1990) , 10.1115/1.2903358
The use of flat-ended projectiles for determining dynamic yield stress I. Theoretical considerations Proceedings of The Royal Society A: Mathematical, Physical and Engineering Sciences. ,vol. 194, pp. 289- 299 ,(1948) , 10.1098/RSPA.1948.0081
An improved technique for the experimental measurement of specimen surface temperature during Hopkinson-bar tests Measurement Science and Technology. ,vol. 9, pp. 12- 19 ,(1998) , 10.1088/0957-0233/9/1/003
K.A. Hartley, J. Duffy, R.H. Hawley, Measurement of the temperature profile during shear band formation in steels deforming at high strain rates Journal of the Mechanics and Physics of Solids. ,vol. 35, pp. 283- 301 ,(1987) , 10.1016/0022-5096(87)90009-3
Alan T. Zehnder, Ares J. Rosakis, On the temperature distribution at the vicinity of dynamically propagating cracks in 4340 steel Journal of The Mechanics and Physics of Solids. ,vol. 39, pp. 385- 415 ,(1991) , 10.1016/0022-5096(91)90019-K
J. Harding, E. O. Wood, J. D. Campbell, Tensile Testing of Materials at Impact Rates of Strain Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23). ,vol. 2, pp. 88- 96 ,(1960) , 10.1243/JMES_JOUR_1960_002_016_02
J.E. Harding, Behaviour of thin-walled structures: Ed. J. Rhodes and J. Spence Applied Science Publishers, Barking, Essex, UK, £62.00 hardback Engineering Structures. ,vol. 7, pp. 215- 216 ,(1985) , 10.1016/0141-0296(85)90056-2
J P Noble, J Harding, Temperature measurement in the tensile Hopkinson bar test Measurement Science and Technology. ,vol. 5, pp. 1163- 1171 ,(1994) , 10.1088/0957-0233/5/9/019