Abstract
Laser ultrasonics is a technique where lasers are employed to generate and detect ultrasound. A data collection method (full matrix capture) and a post processing imaging algorithm, the total focusing method, both developed for ultrasonic arrays, are modified and used in order to enhance the capabilities of laser ultrasonics for nondestructive testing by improving defect detectability and increasing spatial resolution. In this way, a laser induced ultrasonic phased array is synthesized. A model is developed and compared with experimental results from aluminum samples with side drilled holes and slots at depths of 5 – 20 mm from the surface.
| Original language | English |
|---|---|
| Pages (from-to) | 21921-21938 |
| Number of pages | 18 |
| Journal | Optics Express |
| Volume | 24 |
| Issue number | 19 |
| Early online date | 12 Sep 2016 |
| DOIs | |
| Publication status | Published - 19 Sep 2016 |
Keywords
- Laser induced ultrasonics
- Phased-array imaging systems
- Remote sensing and sensors
- Nondestructive testing
- Ultrasound
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Professor Paul D Wilcox
- Department of Mechanical Engineering - Professor of Dynamics
- Ultrasonics and Non-destructive Testing (UNDT)
Person: Academic , Member