Sudden Leakage Research Articles

Design and Performance of Quick Opening Shock Tube Using Rubber Membrane for Weak Shock Wave Generation.

In order to generate weak shock waves with repeatability of better than 99%, a shock tube was constructed which, instead of rupturing conventional diaphragms, utilizes 0.5 mm to 1.0 mm thick rubber membrane to separate the driver and driven gases. Sudden leakage of the high-pressure gas which bulged the rubber membrane subsequently drove a weak shock wave into the low-pressure channel within a relatively short formation length. The rubber membrane was operated within its elastic limit and moved very quickly, giving good repeatability. With identical initial conditions for a series of experiments, the scatter of shock Mach number was found to be at most ±0.25% for shock Mach number ranging from Ms=1.02 to 1.55 throughout more than 100 runs.

Presumed Sudden Leakage of a Pilocarpine Ocusert and Rhegmatogenous Retinal Detachment

Presumed Sudden Leakage of a Pilocarpine Ocusert and Rhegmatogenous Retinal Detachment

Brecciation of clasts in diamictites of the Gowganda Formation, Ontario, Canada

Igneous boulders in the Gowganda Formation were brecciated prior to the induration of the diamictites in which they occur. The breccias evidently represent the results of the maximum stresses imposed on a lodgment till in the final stages of emplacement. The stresses necessary to fracture granitoid clasts are likely to occur at the base of glaciers of unremarkable size, and could easily be imposed by small glaciers if the pore pressure in the underlying till dropped as a result of sudden leakage of pore fluid.

Spontaneous growth of a primary defect in a tube in a reversed sodium-water steam generator

The authors conduct experiments simulating the occurrence, mechanics, and hydraulics of sudden crack initiation and leakage in the coolant circuits and steam generator of a sodium cooled reactor in order to determine the consequences of water leakage into the sodium coolant and provide guidelines for incorporation into an emergency protection system for the reactor. Experiments were conducted on 10Kh2M and 12Kh18N10T steels.