The INL Laser Ultrasonic Camera (ILUC) measures vibrations on a surface at a very large number of points at once. The method produces a high resolution video image of the entire vibration pattern on an object's surface without scanning. This system has been used to collect images of resonances and traveling waves on materials ranging from paper and graphite/epoxy composites to sand and metal.
The ILUC can resolve vibration amplitudes as small as 0.05 nm at frequencies from Hz to GHz while producing millions of simultaneous measurements of amplitude and phase distributed over the vibrating surface. These vibration images can be displayed at video frame rates. The INL Laser Ultrasonic Camera (ILUC) is used for macroscopic subjects, while the INL Imaging Ultrasonic Microscope can be used to image vibrations on micron scale subjects. By controlling the relative phase of the recorded data, the ILUC can be used to generate movies of the vibratory motion. Some of these movies are available here for viewing.
| Movie | File Size (MPG files) |
||
|---|---|---|---|
| 1. | View | 2.25 MHz surface waves on an Aluminum block interact with a 1.75 mm drilled hole | 2.0MB |
| 2. | View | Speaker generated 16 kHz waves in sand interact with buried rectangular metal pipe | 1.5MB |
| 3. | View | 40 kHz waves are excited at a point, then travel outward in copy paper | 2.2MB |
| 4. | View | An Agilent 880 MHz resonant filter is excited near its design resonance (3D view) | 8.3MB |
| 5. | View | An Agilent 880 MHz resonant filter is excited near its design resonance | 24.9MB |
| 6. | View | Waves on wall of aquarium due to 1 MHz transducer in water emitting normal to surface | 3.0MB |
| 7. | View | Waves on wall of aquarium due to 1 MHz transducer in water emitting at 30° to surface | 2.4MB |
| 8. | View | Clamped circular plate resonating at 85.9 kHz | 3.5MB |
| 9. | View | Clamped circular plate resonating at 35.8 kHz | 2.8MB |
| 10. | View | 9.8 MHz waves reflect from "F" shaped array of holes drilled in thick Aluminum block and viewed from the opposite side of the block | 7.3MB |
| 11. | View | Resonant vibrations (0.2-2 MHz) of a 100 micron square MEMS mirror device | 12.0MB |
- Contacts:
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Ken Telschow, Ph.D., (208) 526-1264, Send E-mail
Vance A. Deason, (208) 526-2501, Send E-mail