نتایج جستجو برای: hopkinson pressure bar
تعداد نتایج: 434298 فیلتر نتایج به سال:
Two-wave photon Doppler velocimetry measurements in direct impact Hopkinson pressure bar experiments
This paper addresses the applicability of the Time–Temperature Superposition Principle in the dynamic response of a polyurea polymer at high strain rates and different temperatures. Careful and extensive measurements in the time domain of the relaxation behavior and subsequent deduction of a master-relaxation curve establish the mechanical behavior for quasistatic deformations over a time range...
Relationships between the micro-architecture description of cancellous bone, obtained from medical imaging, and its mechanical properties can be used to assess the compression fracture risk at high and low strain rate. This study extends the rupture prediction to the intermediate strain rate regime. The micro-architecture description was obtained with a CT-scan, for which geometry, topology, co...
This paper presents a coupled experimental/modeling study of the mechanical response of porcine brain under high strain rate loading conditions. Essentially, the stress wave propagation through the brain tissue is quantified. A Split-Hopkinson Pressure Bar (SPHB) apparatus, using a polycarbonate (viscoelastic) striker bar was employed for inducing compression waves for strain rates ranging from...
The main results of two impact testing campaigns of automotive longitudinal beams in mild steel and aluminium performed by means of the large Hopkinson bar of the Joint Research Centre Ispra site are reported. The need of precision crash tests for the aim of calibration of industrial impact rigs and validation of FE code is discussed. RbsumC Deux campagnes de tests sur des modbles de longerons ...
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