Nancy B Carlson

US Patent:

6363787, Apr 2, 2002

Filed:

Dec 13, 1999

Appl. No.:

09/460041

Inventors:

Nancy M. Carlson - Idaho Falls ID
John A. Johnson - Idaho Falls ID
David M. Tow - Idaho Falls ID
John B Walter - Idaho Falls ID

Assignee:

Bechtel BWXT Idaho LLC - Idaho Falls ID

International Classification:

G01N 2908

US Classification:

73579, 73597, 73598, 73599, 73643

Abstract:

An apparatus and method for measuring the thickness of a coating adhered to a substrate. An electromagnetic acoustic transducer is used to induce surface waves into the coating. The surface waves have a selected frequency and a fixed wavelength. Interpolation is used to determine the frequency of surface waves that propagate through the coating with the least attenuation. The phase velocity of the surface waves having this frequency is then calculated. The phase velocity is compared to known phase velocity/thickness tables to determine the thickness of the coating.

US Patent:

62360175, May 22, 2001

Filed:

Jul 1, 1999

Appl. No.:

9/346196

Inventors:

Herschel B. Smartt - Idaho Falls ID
Kevin L. Kenney - Idaho Falls ID
John A. Johnson - Idaho Falls ID
Nancy M. Carlson - Idaho Falls ID
Denis E. Clark - Idaho Falls ID
Paul L. Taylor - Boise ID
Edward W. Reutzel - State College PA

Assignee:

Bechtel BWXT Idaho, LLC - Idaho Falls ID

International Classification:

B23K 9095

US Classification:

21913001

Abstract:

Apparatus for determining a quality of a weld produced by a welding device according to the present invention includes a sensor operatively associated with the welding device. The sensor is responsive to at least one welding process parameter during a welding process and produces a welding process parameter signal that relates to the at least one welding process parameter. A computer connected to the sensor is responsive to the welding process parameter signal produced by the sensor. A user interface operatively associated with the computer allows a user to select a desired welding process. The computer processes the welding process parameter signal produced by the sensor in accordance with one of a constant voltage algorithm, a short duration weld algorithm or a pulsed current analysis module depending on the desired welding process selected by the user. The computer produces output data indicative of the quality of the weld.

US Patent:

50000462, Mar 19, 1991

Filed:

Feb 12, 1990

Appl. No.:

7/478375

Inventors:

Gabe V. Garcia - Las Cruces NM
Nancy M. Carlson - Idaho Falls ID
Alan D. Donaldson - Idaho Falls ID

Assignee:

The United States of America as represented by the United States
Department of Energy - Washington DC

International Classification:

G01F 2200

US Classification:

73597

Abstract:

A method of measuring a molten metal liquid pool volume and in particular molten titanium liquid pools, including the steps of (a) generating an ultrasonic wave at the surface of the molten metal liquid pool, (b) shining a light on the surface of a molten metal liquid pool, (c) detecting a change in the frequency of light, (d) detecting an ultrasonic wave echo at the surface of the molten metal liquid pool, and (e) computing the volume of the molten metal liquid.