06151969 is referenced by 13 patents and cites 5 patents.

EIS and EMIS methods of assessing the fatigue status of a material. The EIS method uses an electrochemical transducer cell to apply electrical perturbations to the material, and to acquire voltage and current measurements over a range of frequencies. The impedance at each frequency is calculated, resulting in impedance spectrum data. This data is correlated to reference data representing the fatigue life of the material. The EMIS method is similar except that mechanical instead of electrical perturbations are applied to the material.

Title
Electromechanical and electrochemical impedance spectroscopy for measuring and imaging fatigue damage
Application Number
9/115114
Publication Number
6151969
Application Date
July 14, 1998
Publication Date
November 28, 2000
Inventor
Stephen J Hudak Jr
San Antonio
TX, US
Michael A Miller
San Antonio
TX, US
Agent
Baker Botts L
Assignee
Southwest Research Institute
TX, US
IPC
G01N 3/32
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