Several ultrasonic inspection methods were developed at the Federal Aviation administration's Airworthiness Assurance NDI Validation Center (AANC) to easily and rapidly detect hidden stress corrosion cracks in all vertical windshield posts on the United States Coast Guard (USCG) HU-25 Guardian aircraft. The inspection procedure locates cracks as small as 2.0 millimeters emanating from internal fastener holes and determines their length. A test procedure was developed and a baseline assessment of the USCG fleet was conducted. Inspection results on twenty-five aircraft revealed a good correlation with results made during subsequent structural disassembly and visual inspection
Stress Corrosion Crack Detection on HU-25 Guardian Aircraft
1999
6 pages
Report
No indication
English
Crack detection on HU-25 Guardian aircraft
NTIS | 1996
|Engineering Index Backfile | 1941