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Terahertz imaging and backscatter radiography probability of detection study for space shuttle foam inspections
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Johnson, Kenneth Rummel, Ward Ussery, Warren Walker Sr., James |
| Copyright Year | 2008 |
| Description | This slide presentation reviews the use of terahertz imaging and Backscatter Radiography in a probability of detection study of the foam on the external tank (ET) shedding and damaging the shuttle orbiter. Non-destructive Examination (NDE) is performed as one method of preventing critical foam debris during the launch. Conventional NDE methods for inspection of the foam are assessed and the deficiencies are reviewed. Two methods for NDE inspection are reviewed: Backscatter Radiography (BSX) and Terahertz (THZ) Imaging. The purpose of the Probability of Detection (POD) study was to assess performance and reliability of the use of BSX and or THZ as an appropriate NDE method. The study used a test article with inserted defects, and a sample of blanks included to test for false positives. The results of the POD study are reported. |
| File Size | 1321911 |
| Page Count | 18 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20110005509 |
| Archival Resource Key | ark:/13960/t6qz76v0z |
| Language | English |
| Publisher Date | 2008-11-10 |
| Access Restriction | Open |
| Subject Keyword | Foams Radiography Nondestructive Tests External Tanks Backscattering Probability Theory Inspection Imaging Techniques Detection Reliability Space Shuttle Orbiters Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Presentation |
