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Apparatus and method for fatigue testing of a material specimen in a high-pressure fluid environment

United States Patent

8,453,515
June 4, 2013
View the Complete Patent at the US Patent & Trademark Office
Oak Ridge National Laboratory - Visit the Partnerships Directorate Website
The invention provides fatigue testing of a material specimen while the specimen is disposed in a high pressure fluid environment. A specimen is placed between receivers in an end cap of a vessel and a piston that is moveable within the vessel. Pressurized fluid is provided to compression and tension chambers defined between the piston and the vessel. When the pressure in the compression chamber is greater than the pressure in the tension chamber, the specimen is subjected to a compression force. When the pressure in the tension chamber is greater than the pressure in the compression chamber, the specimen is subjected to a tension force. While the specimen is subjected to either force, it is also surrounded by the pressurized fluid in the tension chamber. In some examples, the specimen is surrounded by hydrogen.
Wang; Jy-An (Oak Ridge, TN), Feng; Zhili (Knoxville, TN), Anovitz; Lawrence M. (Oak Ridge, TN), Liu; Kenneth C. (Oak Ridge, TN)
UT-BaHelle, LLC (Oak Ridge, TN)
12/ 875,169
20120055258
September 3, 2010
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH AND DEVELOPMENT This invention was made with government support under Contract No. DE-AC05-00OR22725 awarded by the U.S. Department of Energy. The government has certain rights in the invention.