N. Goldfine, V. Zilberstein, JENTEK Sensors, Inc., Waltham, MA; D. Grundy, Jentek Sensors, Inc., Waltham, MA; D. Schlicker, JENTEK Sensors, Inc, Waltham, MA
Early detection of fatigue damage and overload events in landing gear components are critical to avoid in-service failures. Conventional eddy current testing (ET), magnetic particle inspection (MPI), and ultrasonic testing (UT) are limited in capability for complex shape components that are shot peened and cadmium plated. This limitation can be overcome by model-based flexible MWM-Array eddy current sensors. Fatigue tests on coupons and components using both permanently mounted and scanning MWM-Array eddy current sensors are described. This presentation will include results demonstrating (1) rapid permeability mapping with correction for variations in cadmium plating thickness on complex surfaces of landing gear components, (2) overload event detection using scanning arrays and on-board monitoring with permanently mounted sensors, and (3) fatigue damage imaging/monitoring with scanning and permanently mounted sensors. The presentation will also describe adaptive damage tolerance concepts for landing gear life management. This work has been funded in part by JENTEK Sensors, Inc., a USAF SBIR Office and a U.S. Navy SBIR Office.
Summary: Early detection of fatigue damage and overload events in landing gear components are critical to avoid in-service failures. Conventional eddy current testing (ET), magnetic particle inspection (MPI), and ultrasonic testing (UT) are limited in capability for complex shape components that are shot peened and cadmium plated. This limitation can be overcome by model-based flexible MWM-Array eddy current sensors. Fatigue tests on coupons and components using both permanently mounted and scanning MWM-Array eddy current sensors are described. This presentation will include results demonstrating (1) rapid permeability mapping with correction for variations in cadmium plating thickness on complex surfaces of landing gear components, (2) overload event detection using scanning arrays and on-board monitoring with permanently mounted sensors, and (3) fatigue damage imaging/monitoring with scanning and permanently mounted sensors. The presentation will also describe adaptive damage tolerance concepts for landing gear life management. This work has been funded in part by JENTEK Sensors, Inc., a USAF SBIR Office and a U.S. Navy SBIR Office.
