A8.1 - Areal optical surface measurement – how to get reliable topography data
- Event
- AMA Conferences 2015
2015-05-19 - 2015-05-21
Nürnberg, Germany - Band
- Proceedings SENSOR 2015
- Chapter
- A8 - Strain Sensing
- Author(s)
- H. Schmidt, T. Hausotte - University Erlangen-Nürnberg (Germany)
- Pages
- 172 - 176
- DOI
- 10.5162/sensor2015/A8.1
- ISBN
- 978-3-9813484-8-4
- Price
- free
Abstract
The change of requirements of technical surfaces and the demand to act expeditiously leads to a change in surface metrology – from 2D tactile profilometry to 3D optical areal measurements. As a result a wide range of systems with sensors based on different physical principles have been developed – all with system inherent disadvantages regarding the measurement uncertainty. In order to assess the quality of surface datasets, three points have to be considered, the lack of knowledge regarding system setup and parameter adjusting, the restraints of optical measurement systems, e.g. the restricted dynamic range of camera sensors and the ignorance regarding the uncertainty of single points in datasets. To optimize the datasets, an assistance system to guide the operator through the measurement process was developed, measurements to optimize the number of valuable points in datasets and considerations about quality indicators for single data points have been carried out.