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Use of Flexible Capacitive Strain Gauges in Tires
Category(s):
For Information, Contact:
Craig Forney
Commercialization Manager, Chemistry and Materials Sciences
515-294-4740
licensing@iastate.edu
Web Published:
6/1/2015
ISURF #
4124
Summary:
Iowa State University researchers have utilized soft, flexible capacitive strain gauges to report real-time changes in tire shape.  This information can provide information regarding tire slip, changes in driving surface and structural health of the tire.

Development Stage:
Description:
Iowa State University researchers have demonstrated the use of pliant capacitive strain sensors to monitor flexure in automotive tires.  The strain sensors, previously patented by MIT (U.S. Patent 8,384,398), are inexpensive to manufacture, responsive to small amounts of strain, and can easily be deployed around the entire interior circumference of the tire.  Information from the sensors could be used to monitor the structural health of the tire, terrain conditions, tire slip, over-inflation, loss of contact with the driving surface, and more.  Feedback can inform the driver of imminent failure and deteriorating road conditions, with application in personal, commercial and industrial vehicles.

Advantage:
• Flexible strain sensors minimize flexure mismatch with tire wall
• Sensitive to small amounts of stress
Application:
Tire monitoring to enhance the safety and controllability of vehicles

Patent Information:
*To see the full version of the patent(s), follow the link below, then click on "Images" button.
Country Serial No. Patent No. Issued Date
United States 14/733,640 9,815,343* 11/14/2017


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