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Health Monitoring of Composite Overwrapped Pressure Vessels (COPVs) Using Meandering Winding Magnetometer ((MWM(Registered Trademark)) Eddy Current SensorsThere are 3 mechanisms that affect the life of a COPV are: a) The age life of the overwrap; b) Cyclic fatigue of the metallic liner; c) Stress Rupture life. The first two mechanisms are understood through test and analysis. A COPV Stress Rupture is a sudden and catastrophic failure of the overwrap while holding at a stress level below the ultimate strength for an extended time. Currently there is no simple, deterministic method of determining the stress rupture life of a COPV, nor a screening technique to determine if a particular COPV is close to the time of a stress rupture failure. Conclusions: Demonstrated a correlation between MWM response and pressure or strain. Demonstrated the ability to monitor stress in COPV at different orientations and depths. FA41 provides best correlation with bottle pressure or stress.
Document ID
Acquisition Source
Kennedy Space Center
Document Type
Russell, Rick
(NASA Kennedy Space Center Cocoa Beach, FL, United States)
Grundy, David
(JENTEK Sensors, Inc. Boston, MA, United States)
Jablonski, David
(JENTEK Sensors, Inc. Boston, MA, United States)
Martin, Christopher
(JENTEK Sensors, Inc. Boston, MA, United States)
Washabaugh, Andrew
(JENTEK Sensors, Inc. Boston, MA, United States)
Goldfine, Neil
(JENTEK Sensors, Inc. Boston, MA, United States)
Date Acquired
August 25, 2013
Publication Date
April 1, 2011
Subject Category
Engineering (General)
Report/Patent Number
Meeting Information
Meeting: Aircraft Airworthiness and Sustainment Conference
Location: San Diego, CA
Country: United States
Start Date: April 18, 2011
End Date: April 21, 2011
Funding Number(s)
Distribution Limits
Public Use Permitted.
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