Optical inspection of space-propulsion components using an injection seeded Nd:YAG laser system
Abstract
A dual-beam, injection-seeded, Nd:YAG laser has been demonstrated for detecting structural defects. This demonstration was part of an on-going project to use dual-reference-beam holographic interferometry to inspect space propulsion components for cracks, structural failures, structural changes, and gas leaks. Potential subjects for inspection include welds, duct work, casings, turbopumps, blades, composites, and ceramics. The maximum dimension of an inspected area ranges from a few centimeters to a meter. The entire optical inspection system is now ready for a demonstration application.
- Publication:
-
Structural Integrity and Durability of Reusable Space Propulsion Systems
- Pub Date:
- April 1989
- Bibcode:
- 1989sidr.nasa...87D
- Keywords:
-
- Holographic Interferometry;
- Neodymium Lasers;
- Nondestructive Tests;
- Optical Measuring Instruments;
- Quality Control;
- Spacecraft Components;
- Yag Lasers;
- Equipment Specifications;
- Laser Applications;
- Laser Outputs;
- Optical Equipment;
- Lasers and Masers