| Issue |
MATEC Web Conf.
Volume 145, 2018
NCTAM 2017 – 13th National Congress on Theoretical and Applied Mechanics
|
|
|---|---|---|
| Article Number | 05009 | |
| Number of page(s) | 7 | |
| Section | Non-destructive testing | |
| DOI | https://doi.org/10.1051/matecconf/201814505009 | |
| Published online | 09 January 2018 | |
A method of laser ultrasound tomography for solid surfaces mapping
1
National University of Science and Technology “MISiS”, 119049 Moscow, Russia
2
Lomonosov Moscow State University, Faculty of Physics, 119234 Moscow, Russia
3
Lomonosov Moscow State University, International Laser Centre, 119991 Moscow, Russia
4
Institute on Laser and Information Technologies of the Russian Academy of Sciences, 140700 Shatura, Moscow Region, Russia
* Corresponding author: zarubin.vasily@gmail.com
Surface control is an important problem for production inspection in industry. Traditionally it is solved using mechanical and optical profilometry, providing high spatial resolution. However, such methods are inappropriate for bodies immersed in opaque liquids and require preliminary preparation of samples. Current work focuses on an application of a method of laser ultrasound tomography to mapping of solid surfaces. The suggested approach combines high acoustical resolution, high performance and allows profilometry of contaminated and immersed samples. An automated prototype for real-time surface profile measurements is constructed and tested on several bodies of revolution. Linear approximation of a cylinder profile obtained by the prototype shows maximum approximation inconsistency of 15 μm. The results are verified by those obtained by the conventional x-ray method.
© The Authors, published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (http://creativecommons.org/licenses/by/4.0/).
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