| タイトル | Improved flaw-detection method |
| 著者（英） | Platt, R. J., Jr. |
| 著者所属（英） | NASA Langley Research Center |
| 発行日 | 1980-04-01 |
| 言語 | eng |
| 内容記述 | Holographic detection of unbonded or delaminated surfaces of materials and structures is improved by using helium instead of air in vacuum test chamber. Helium has index of refraction closer to vacuum (unity) than air. Therefore changes in chamber pressure during test do not alter index of refraction as much as they do with air. With air, much of detail is lost, particularly in curved areas. |
| NASA分類 | MECHANICS |
| レポートNO | 79B10378
LAR-11866 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/430388 |
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