Measuring and testing – Specimen stress or strain – or testing by stress or strain... – By loading of specimen
Reexamination Certificate
2005-09-13
2005-09-13
Noori, Max (Department: 2855)
Measuring and testing
Specimen stress or strain, or testing by stress or strain...
By loading of specimen
C073S788000
Reexamination Certificate
active
06941819
ABSTRACT:
An apparatus for determining dynamic mechanical properties of a cement sample. The apparatus includes an isolator located within a cavity defined by a body. The isolator has an attached end that engages the body proximate a narrow end of the cavity. A space between the body and isolator facilitates lateral movement the isolator. A transducer is located in an interior space defined by the isolator. The transducer has an attached end engaging a distal end of the isolator. A space between the isolator and transducer facilitates lateral movement of the transducer distal end. The transducer generates compressional waves and shear waves that travel into the sample. An ultrasonic receiver receives the waves. The waves are separated with filtering. Sample setting time may be determined from propagation time of shear waves through the sample. Compressive strength of the sample is determined by velocity of compressional waves as the sample sets.
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Cobb Steven L.
Maki, Jr. Voldi E.
Chandler Instruments Company L.L.C.
Ellington Alandra
Fellers Snider Blankenship Bailey & Tippens, P.C.
Noori Max
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