University of Rhode Island

Board of Governors for Higher Education, State of Rhode Island and Providence Plantations

Rhode Island Board of Education, State of Rhode Island and Providence Plantations

Arun Shukla

Dillon T Fontaine

Nicholas Heeder

Venkitanarayanan Parameswaran

Anthony D Marshall

Structures designed to mitigate implosion pressure spikes through the use of an external sacrificial confining structure. Such improved structures can, in some embodiments, completely surround the existing structures that are at a high risk of imploding. The improved structures can slow the rate at which the surrounding fluid media volume is consumed by providing resistance to flow into the enclosure.

Structures and methods for mitigating implosion pressure spikes

An accelerated life testing (ALT) system for the pressurization of corrosive media, such as seawater, at high pressures and at elevated temperatures (up to about 70&#xb0; C.) for extended periods of time. The interior of a pressure vessel is coated in an inert ceramic/epoxy coating that provides adequate corrosion protection from the corrosive media. A fabric reinforced nitrile diaphragm separates the corrosive media from hydraulic actuating media, such as oil. The hydraulic actuating media is pressurized, which deforms the diaphragm into the corrosive media, thereby increasing the pressure. The diaphragm and supplementary flouroelastomer seals isolate the corrosive media from pressure generating, monitoring, and safety equipment. The temperature of the entire vessel and contents is maintained by complete immersion in a heated, filtered water bath. The system is particularly useful for ALT experiments on components intended for sea floor and long term deep ocean environment operations at about 6000 psi (41.4 MPa).

System for elevated temperature, high pressure accelerated life testing using seawater

A flexible, electrically conductive composite is disclosed that includes a plurality of particles of elastomeric material and a conductive material. The conductive material at least partially covers the plurality of particles of elastomeric material. A first portion of the composite has undergone a force that has deformed a first portion of the particles of elastomeric material and broken up the conductive coating material.

Systems and methods for providing highly flexible and conductive composite material with tunable properties

This invention provides a particulate composite comprising a polyester resin, a plasticizer, and a plurality of cenospheres. The polyester resin and the plasticizer form a matrix wherein the cenospsheres are distributed nonhomogeneously in the matrix. The nonhomogenous distribution of cenospheres further comprises a continuously varying particle volume fraction along a single dimension.

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Wakefield, RI, United States of America

Arun Shukla