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Radiographic detectability limits for seeded voids in sintered silicon carbide and silicon nitride
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Baaklini, G. Y. Kiser, J. D. Roth, D. J. |
| Copyright Year | 1984 |
| Description | Conventional and microfocus X-radiographic techniques were compared to determine relative detectability limits for voids in green and sintered SiC and Si3N4. The relative sensitivity of the techniques was evaluated by comparing their ability to detect voids that were artificially introduced by a seeding process. For projection microfocus radiography the sensitivity of void detection at a 90/95 probability of detection/confidence level is 1.5% of specimen thickness in sintered SiC and Si3N4. For conventional contact radiography the sensitivity is 2.5% of specimen thickness. It appears that microfocus projection radiography is preferable to conventional contact radiography in cases where increased sensitivity is required and where the additional complexity of the technique can be tolerated. |
| File Size | 8274173 |
| Page Count | 19 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19850013364 |
| Archival Resource Key | ark:/13960/t46q6sr2m |
| Language | English |
| Publisher Date | 1984-01-01 |
| Access Restriction | Open |
| Subject Keyword | Radiography Dynamic Characteristics Sensitivity Reaction Bonding Comparison Sintering Silicon Carbides Silicon Nitrides Ceramics X Ray Analysis Detection Reliability Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
