Frank T Radcliff

45677646, Feb 4, 1986

Dec 27, 1983

6/565509

Thomas D. Jamison - Fort Oglethorpe GA
Frank T. Radcliff - Chattanooga TN

Combustion Engineering, Inc. - Windsor CT

G01N 2904

73588

A method and apparatus for detecting disbond in laminar workpieces. Energy is transmitted to a workpiece (8) by repetitive impacts. A transducer (12) converts energy emitted from the workpiece (8) to an electrical signal. The energy emitted in response to each of the repetitive impacts is analyzed. After filtering out the DC component (20) and amplifying the signal (30) the maximum amplitude of the energy from each impact is selected (50) and passed to a sample and hold circuit (60). The piecewise linear output of the sample and hold circuit (60) is passed through a low pass active filter (70) prior to recording on a strip chart recorder. The strip chart record is analyzed to ascertain areas of the workpiece (8) having defective clad bonding (7).

39941736, Nov 30, 1976

Nov 12, 1973

5/415021

Charles Theodore Ward - Chattanooga TN
Donald Lee Mathis - Chattanooga TN
Frank Taylor Radcliff - Chattanooga TN

Combustion Engineering, Inc. - Windsor CT

G01n 2300

73432R

A method and apparatus for orienting a probe or the like in a predetermined angular orientation within a long, curved conduit at selected longitudinal positions therewithin. A steam generator tube may comprise all or part of the curved conduit. Curved extension members may be added to an end or ends of the tube to form curved lengths of conduit including the tube.

43607152, Nov 23, 1982

Jan 25, 1980

6/115506

Thomas D. Jamison - Fort Oglethorpe GA
Frank T. Radcliff - Chattanooga TN

Electric Power Research Institute, Inc. - Palo Alto CA

H02G 1100

191 122R

A reel assembly for flexible tubing includes a drum having a conically shaped outer wall. The maximum diameter of the drum is less than the natural cast diameter of the tubing whereby the tubing coils in pressure contact with the inner surface of the outer wall. The friction of the tubing coils against the drum wall provides drive of the reel. Electrical interconnection to the tubing is provided by a cable extending in the central bearing mount and coiled loosely about the central bearing mount thereby allowing for expansion or contraction as the reel rotates.

42625394, Apr 21, 1981

Jul 16, 1979

6/058008

Thomas D. Jamison - Fort Oglethorpe GA
Frank T. Radcliff - Chattanooga TN

Electric Power Research Institute - Palo Alto CA

G01N 2904

73622

A drive assembly for a probe carrier such as used for inspection and maintenance of a heat exchanger in a steam driven electric power generation plant includes a motor and speed reducer and drive wheel for pushing a probe carrier through the tubes of the heat exchanger. The carrier may comprise nylon tubing, and the drive wheel includes radially mounted wires with the tips of the wires defining a surface for engaging the tubing. An adjustable pressure plate yieldably biases the tubing into engagement with the drive wheel with sufficient pressure for the wire tips to indent the tubing surface but without penetrating the tubing surface whereby an interference drive of the probe carrier is achieved.

45670129, Jan 28, 1986

Jul 12, 1982

6/397296

Frank T. Radcliff - Chattanooga TN

Combustion Engineering, Inc. - Windsor CT

G21C 1700

376245

Two parallel heat exchange tubes having that part of a support structure between them to be interrogated for defects. A pair of radiation sources are positioned in the one tube to straddle the interrogated support portion, and a radiographic film is positioned in the tube behind the interrogated portion.