Integral Life-Sensing Capability for Laminated Structures and Products

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Many devices are consistently subjected to harsh, unpredictable conditions and become susceptible to external injury. Even with proper maintenance and inspection, some types of damage are not easily detected or preventable. Damage to laminated structures can be especially harmful. Damage to tires occurs because of gap damage within the tread, over-deflection, cults, punctures, imbalance, impact, rubber hardening/degradation, or improper mounting/repair.

Purdue University researchers have developed a sensing method that can alert operators when a device's structural integrity has degraded. This can save time and effort in repairing or deciding to change the tire, and in some situations, prolong the operable life of a tire. This new sensing method not only detects unsafe operating conditions, but also alerts operators of damage that occurs in situ.

Advantages:
-Sensors detect internal and external changes in structural condition
-Ability to sense multiple types of structural damage and pinpoint location of failure
-Low cost solution
-Readily incorporated into traditional manufacturing processes
-Real time life evaluation
-Advanced detection allows safer operation and use of devices, eases repair efforts, and prolongs device life by allowing condition based maintenance

Potential Applications:
-Products with structures subject to stresses that can lead to structural failure, including
tires, airfoils, and pipes used in mobile machinery, automotive, aerospace, manufacturing, and process equipment
Jun 22, 2006
NATL-Patent
European Patent
1896822
Nov 7, 2018

Jun 22, 2006
EP-Patent
Germany
1896822
Nov 7, 2018

Jun 22, 2006
EP-Patent
United Kingdom
1896822
Nov 7, 2018

Jun 22, 2006
NATL-Patent
China
ZL200680022345.0
Mar 16, 2011

Jun 22, 2006
NATL-Patent
Japan
4686603
Feb 18, 2011

Jun 22, 2006
CIP-Patent
United States
7,752,904
Jul 13, 2010

Jun 22, 2006
South Korea
10-0964052
Jun 8, 2010

Mar 2, 2006
United States
7,555,936
Jul 7, 2009

Jun 22, 2006
PCT-Patent
WO
(None)
(None)

Jun 22, 2005
Provisional-Patent
United States
(None)
(None)
Purdue Office of Technology Commercialization
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