AAE552-Session1

AAE552-Session1 - AAE 552 Spring 2009 A F Grandt AAE 552...

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AAE 552 Spring 2009 – A. F. Grandt 1 1 AAE 552: Nondestructive Evaluation of Structures and Materials A. F. Grandt, Jr. Professor of Aeronautics and Astronautics Purdue University W. Lafayette, IN 47907 Spring 2009 2 Contact Information Alten F. (Skip) Grandt, Jr. Email: [email protected] Telephone: Office: 765-494-5141 Home: 765-463-4276 FAX: 765-494-0307 Course webpage accessed at: http://www.itap.purdue.edu/tlt/blackboard 3 AAE 552 Session 1: 12 January 2009 Today: Overview course goals/mechanics Introduction to nondestructive inspection and damage tolerance 4 AAE 552 – NDE Course Goal Overview methods for nondestructive inspection in context of ensuring structural integrity Magnetic particle Thermal imaging Borescope X-ray 5 Fatigue Fracture of Right Wing 19 December 2005 Crashed on takeoff Explosion and fire as right wing separated prior to impact Examination of wreckage revealed fatigue fracture along main beam in right wing Chalk's Ocean Airways Flight 101 58 year old Grumman G73T Turbo Mallard Route: Miami – Bimini, Bahamas 20 fatalities (2 crew, 15 passengers, 3 infants) http://news.yahoo.com 6 Chalk Ocean Airways Flight 101 19 December 2005 58 year old Grumman G73T Turbo Mallard – 20 fatalities Fracture from undetected fatigue crack in right wing http://news.yahoo.com NTSB photos
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AAE 552 Spring 2009 – A. F. Grandt 2 7 Undetected Fatigue Crack Investigators said cracks probably unseen for long time. Cracking should have been found and repaired, although it would take "a very serious" inspection to find it. If officials had known about cracking "they would have repaired it and we wouldn't be here today. I don't think they knew it." http://news.yahoo.com C-130 Air Tanker 17 June 2002 • C-130A lost both wings fighting fire near Walker, CA (north of Yosemite National Park) • 3 crew members lost • 5 remaining aircraft grounded • 1957 aircraft had 21,863 hours • Caused by hidden fatigue cracks in center wing box • Hidden 10-12 inch fatigue crack in center wingbox
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This note was uploaded on 11/04/2010 for the course AAE 552 taught by Professor Longuski during the Spring '10 term at IUPUI.

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AAE552-Session1 - AAE 552 Spring 2009 A F Grandt AAE 552...

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