Water-backed platesHigh-speed photographyDynamic pressure pulsess An experimental and analytical investigation is conducted to study the underwater interaction of implosion pressure pulses with large plates. Two plates with stiffnesses significantly apart are investigated experimentally in a large-diameter ...
A series of underwater implosion experiments have been conducted with thin-wall aluminum alloy 6061-T6 tubes. The nominal tube dimensions are 2.54 cm outside diameter and 30.48 cm length. Two cylinders collapsed at their natural buckling pressure of 6895 kPa gauge pressure (1000 psig). Two ...
The key is the design of the hull that protects the vessel against the large external water pressure that is trying to crush the hull. Much of the existing technology is based on steel, titanium and aluminum. The performance of these materials under extreme stress is well understood...
In order for a controlled-blasting method to be considered, underwater sound levels, in terms of peak pressure and sound exposure levels (SEL), were assessed with regard to specified fish and marine mammal criteria. Measurements for the largest pier, Pier E3, were made at distances from 8 ...
Implosion and explosion events were photographed with a high-speed camera (27,000 frames per second), and the waterborne pressure waves resulting from the implosion were measured simultaneously with underwater blast sensors. The natural implosions were generated by raising the ambient water pressure ...
He replied: "This is an incredibly complex operating environment on the seafloor, over two miles beneath the surface. The remote operating vehicle has been searching, and it is highly capable, and we've been able to classify parts of the pressure chamber for the Titan submersible." ...
This paper describes an improved process for fabricating spherical acrylic plastic pressure hulls within close dimensional tolerances. The process consists... JD Stachiw,JJ Lones - 《Journal of Engineering for Industry》 被引量: 1发表: 1977年 ...
“I will be exposed to risks associated with high pressure gases, pure oxygen, high voltage systems which could lead to injury, disability and death,” Reiss said Thursday, going by memory. “If I am injured, I may not receive immediate medical attention.” Thomas Schoenba...
Mexico’s Supreme Court struck down the second part of the government’s plan to slash the size of the country’s electoral authority, despite months of pressure from the president. The court, which is under new leadership, struck down the first half of the changes in March, and Thursday’...
However,the PMT with protective shield peak pressure shows the model of exponent increase and the impulse shows linear increase. The protective shield can decrease the peak pressure and delay the appear time of peak pressure. But it has little influence in the impulse. 展开 ...