Thickness Effect of Pulse Shaper on Dynamic Stress Equilibrium in the NBR Rubber Specimen

• DOI: 10.4028/www.scientific.net/kem.306-308.1007
• Publication Date: 2009-03-11T22:14:50Z
• Authors: Ouk Sub Lee; Sung Hyun Kim; Jong Won Lee
• Keywords: Split Hopkinson Pressure Bar; Bar (unit); Mechanical impedance

This paper presents an experimental finding in the Split Hopkinson Pressure Bar (SHPB) technique to obtain a better compressive stress strain data for rubber materials. An which modifies conventional SHPB has been developed measuring responses of materials with low mechanical impedance and strengths such as rubber. uses all-polymeric pressure bar achieves closer match between specimen In addition, pulse shaper is utilized lengthen rising time incident ensure equilibrium homogeneous deformation It found that modified can determine dynamic behavior more accurately.