Fracture Evaluation in a Ceramic Spherical Dome Port Under Shock Impact

Abstract

In this study, a fracture evaluation of a ceramic spherical dome port under shock impact has been presented. The experiments were carried out with a shock tube device capable to produce a normal shock. The pressure behind the normal and reflected shock wave was predicted by analytic equations based on initial conditions. The pressures were measured by embedded dynamic pressure sensors. The fracture of specimen was occurred by the pressure behind the reflected shock wave. The pressure distribution in shock tube was obtained during 0 to 5 ms. Simultaneously, the distributions of the pressure, temperature and velocity were calculated in the shock tube at 3 ms after diaphragm burst for various thickness of dome port. The results of numerical analysis and analytic solutions were good agreement with experimental results.

A study on fracture phenomena of glass filled ceramics using shock tube

“…Dynamic numerical analysis was performed for observation of the fracture behavior of the dome port cover using the commercial code LS-Dyna [7]. The finite element model is created for 1/4…”

A New Shock Tube Facility for Tunnel Safety

“…Recently, shock tubes have been used to study the response of several composite materials like glassreinforced polymers and 3-D woven composites [19,20]. Even a fracture investigation of a ceramic spherical dome was carried out with a shock tube device [21], as well as the response of a stainless steel panel and the influence of the connection detail [22]. The original features of the shock tube here presented are strictly related to its unusual applications and consist in a proper choice of the main parameters characterizing the facility design able to guarantee a high pressure range (~3 MPa), a suitable end-chamber designed to investigate soil-structure interaction as well as proper burner equipment to heat concrete specimen intrados following a defined fire curve.…”