AAE552-Session15

AAE552-Session15 - 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 Session 15 – 16 February 2009 2 Contact Information Alten F. (Skip) Grandt, Jr. Email: [email protected]u 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 15 16 February 2009 Last Time: Finish Visual inspection Endoscopes Machine vision Case histories Pros/cons Today: Start penetrant inspection 4 Assignment Please read Textbook : Chapter 10 Webpage powerpoint references “Visual inspection” – collaboration for NDT education “Endoscopes: The Borescope for Humans,” Christine Poulin AAE 552 term paper Abstract #2 – Due Session 18 (23 February 2009) Paper#1 – Due Session 21 (2 March 2009) 5 Visual Inspection (Fig. 10.1) Visual detection of surface anomalies with the aid of lighting, mirrors, low power magnification Borescopes Spring 2006 Endoscopes: The Borescope for Humans By: Christine Poulin AAE 552 March 2006
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AAE 552 Spring 2009 – A. F. Grandt 2 Machine Vision Inspection 8 Visual Inspection Case Studies Goal : demonstrate quantitative results of visual inspection under aircraft service conditions Case #1 Japanese Airline Experience (1988- 1990) Endo et. al. in-service inspection results No POD Case #2 FAA Benchmark (1995) Spencer, FAA validation center Large panels and retired 737 aircraft POD data 9 Visual Inspection Advantages s Relatively inexpensive s Portable s Immediate results s Minimal training s No special safety precautions s Readily used with other methods s Can be routinely conducted by many individuals not formally designated with NDE responsibility s e.g. pilot walk around, passengers, etc. 10 Visual Inspection Disadvantages s Only surface anomalies s Visual access required s Surface cleaning necessary s Sensitive to lighting s Inspector vision dependent on many factors – difficult to monitor continuously s POD low relative to other methods 11 Ch 10: Penetrant Inspection Penetration of colored liquid locates surface breaking anomalies PENETRANT TESTING
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AAE 552 Spring 2009 – A. F. Grandt 3 13 Chapter 10 Liquid Penetrant Inspection Major steps Classification of Penetrant Methods Penetrant Applications Safety Considerations Penetrant Advantages & Disadvantages Introduction This module is intended to provide an introduction to the NDT method of penetrant testing. Penetrant Testing, or PT, is a nondestructive testing method that builds on the principle of Visual Inspection. PT increases the
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  • Spring '10
  • Longuski
  • Nondestructive testing, dye penetrant inspection, Penetrant, A. F. Grandt, penetrant inspection, penetrant removal

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AAE552-Session15 - AAE 552 Spring 2009 A F Grandt AAE 552...

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