System and method for detecting a likelihood of corrosion

US8466696B2 · kind B2 · utility

Assignee

• GM GLOBAL TECHNOLOGY OPERATIONS LLC · US

Inventors

• Asim Tewari · Jamkhed, IN
• Deepika Sachdeva · Savanuru, IN
• Kiran Deshpande · Srirangapatna, IN
• Arun M. Kumar · Bengaluru, IN
• Pulak Bandyopadhyay · Rochester Hills, US
• Jon T. Carter · Farmington, US

Key dates

• Filing date: Mar 30, 2011
• Grant date: Jun 18, 2013
• Expiry date: Dec 27, 2031

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N17/02
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A system may be used to detect corrosion between a first metal and a second metal, where the second metal is positioned adjacent to the first metal. The system may include a processor electrically coupled to each of the first and the second metals and configured to monitor a complex impedance between the first metal and the second metal, where the complex impedance may include a real component and an imaginary component. The processor may compare the real component of the complex impedance to a first threshold, compare the imaginary component of the complex impedance to a second threshold, and indicate a likelihood of corrosion if at least one of the real and imaginary components are below their respective threshold.