Agostino Josefina R Abbate from 853 Burroughs Rd, Acton, MA 01719, Phone: 978 263-8726

Us Patents

Apparatus And Method For Remote Ultrasonic Determination Of Thin Material Properties Using Signal Correlation
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US Patent:

6393384, May 21, 2002
Filed:

Apr 9, 1999
Appl. No.:

09/288887
Inventors:

Brian W. Anthony - Cambridge MA
Petros A. Kotidis - Framingham MA
Daniel E. Klimek - Lexington MA
Agostino Abbate - Boxborough MA
Assignee:

Textron Systems Corporation - Wilmington DE
International Classification:

G06G 748
US Classification:

703 6, 703 2, 703 5, 702 39, 356432
Abstract:

In an apparatus and method for remote ultrasonic determination of thin material properties using signal correlation, a method and apparatus are provided by which an arbitrarily-oriented anisotropic thin material may be interrogated for characterizing an unknown material property value thereof. The unknown material property may comprise for example temperature, pressure, elastic constants, density, hardness, composition, crystal orientation, grain size, and residual stress, or any material property that is variable with respect to known physical parameters of the material, for example known material elastic constants and/or density. In a first embodiment, theoretical signals are generated, for example a theoretical signal matrix, to characterize a material property value of a thin anisotropic material. A model of the thin material is generated comprising the behavior of the known material physical properties as functions of the unknown material property value to be characterized. For a plurality of known material thicknesses and known material property values, a transduction mechanism is simulated at a source location for generating a simulated elastic stress wave operating on the model at a plurality of source locations.

Method For Measuring Part Thickness Having An External Coating Using Impedance Matching Delay Lines
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US Patent:

7194907, Mar 27, 2007
Filed:

Jun 16, 2003
Appl. No.:

10/461382
Inventors:

Agostino Abbate - Boxborough MA, US
Paul Joseph DeAngelo - West Bridgewater MA, US
Steven Abe LaBreck - Boston MA, US
Assignee:

R/D Tech Instruments Inc. - Quebec
International Classification:

G01N 29/07
US Classification:

73597, 73598, 73602
Abstract:

An ultrasonic transducer for measuring a part with a coating having at least one acoustic transducer, and a buffer delay line having an impedance matched to an impedance of the coating.