Li Shunping, Feng Shunshan, Xue Zaiqing, Tu Jian. Mechanical properties of PTFE at high strain rate[J]. Explosion And Shock Waves, 2017, 37(6): 1046-1050. doi: 10.11883/1001-1455(2017)06-1046-05
Citation:
Li Shunping, Feng Shunshan, Xue Zaiqing, Tu Jian. Mechanical properties of PTFE at high strain rate[J]. Explosion And Shock Waves, 2017, 37(6): 1046-1050. doi: 10.11883/1001-1455(2017)06-1046-05
Li Shunping, Feng Shunshan, Xue Zaiqing, Tu Jian. Mechanical properties of PTFE at high strain rate[J]. Explosion And Shock Waves, 2017, 37(6): 1046-1050. doi: 10.11883/1001-1455(2017)06-1046-05
Citation:
Li Shunping, Feng Shunshan, Xue Zaiqing, Tu Jian. Mechanical properties of PTFE at high strain rate[J]. Explosion And Shock Waves, 2017, 37(6): 1046-1050. doi: 10.11883/1001-1455(2017)06-1046-05
The mechanical properties of polyetrafluoroethylene (PTFE), which is being used increasingly in diverse applications owing to its many attractive properties, are important for applications involving either high-velocity impact or blast loading at very high strain rates (of the order of 106 s-1). In this work, for high strain rates of 105~106 s-1, the PTFE dynamic pressure experiment was conducted using the pressure-shear plate-impact (PSPI) facility in which a tungsten-carbide (WC) flyer impacted a target assembly consisting of a thin PTFE plate sandwiched between two hard (elastic) WC plates. The velocity at the free surface of the target assembly was measured using the laser interferometry, an effective method was adopted to analyze the experimental results to obtain the values of the stress and strain at four points, and the stress strain relationship was fitted. The investigation has significance for the analysis of the strength and impact crushing performance of PTFE/metal reactive fragments.
Chou S C, Robertson K D, Rainey J H. The effect of strain rate and heat developed during deformation on the stress-strain curve of plastics[J]. Experimental Mechanics, 1973, 13(10):422-432. doi: 10.1007/BF02324886
[2]
Brown E N, Willms R B, Gray Ⅲ G T, et al. Influence of molecular conformation on the constitutive response of polyethylene: a comparison of HDPE, UHMWPE, and PEX[J]. Experimental Mechanics, 2007, 47(3):381-393. doi: 10.1007/s11340-007-9045-9
[3]
Walley S M, Field J E. Strain rate sensitivity of polymers in compression from low to high rates[J]. DYMAT Journal, 1994, 1(3):211-227.
[4]
Rae P J, Dattelbaum D M. The properties of poly (tetrafluoroethylene) (PTFE) in compression[J]. Polymer, 2004, 45(22):7615-7625. doi: 10.1016/j.polymer.2004.08.064
[5]
Khan A, Zhang H. Finite deformation of a polymer: experiments and modeling[J]. International Journal of Plasticity, 2001, 17(9):1167-1188. doi: 10.1016/S0749-6419(00)00073-5
[6]
Jennifer L J, Clive R S. Compressive properties of extruded polytetrafluoroethylene[J]. Polymer, 2007, 48(14):4184-4195. doi: 10.1016/j.polymer.2007.05.038
[7]
Zerilli F J, Armstrong R W. A constitutive equation for the dynamic deformation behavior of polymers[J]. Journal of Materials Science, 2007, 42(12):4562-4574. doi: 10.1007/s10853-006-0550-5
[8]
Kim K S, Rodney J C, Prashant Kumar. A combined normal- and transverse-displacement interferometer with an application to impact of ycutquartz[J]. Journal of Applied Physics, 1977, 48(10):4132. doi: 10.1063/1.323448
DownLoad:
