Azough, F.

P., [Unknown]

Read-Jennings, M. C. L.

Scenini, F.

Shoesmith, J. P.

English

Optical techniques are becoming the measurement devices of choice across much of the manufacturing and monitoring industries. As an example of this, a senior measurement specialist at Rolls Royce commented that ‘if the price was right, we would use camera measurement systems for as much as possible’. The key reasons for this are usually cited as being able to take non-contact measurements, ease of use and flexibility. This paper looks at potential applications for camera based measurement technology. A system based on Digital Image Correlation techniques supplied by Imetrum was used for the assessment process, both because of the company’s interest in the nuclear field and their system resolution being higher than competitors. To find those that were most likely to find a suitable market niche, a range of applications was elicited from relevant industry technical leaders worldwide. With over 30 potential areas identified, the research team decided to progress by assessing the technical enablers that would demonstrate the feasibility of applying Imetrum’s technology to each of these. Three key requirements were identified: 1) Take measurements on metals with no applied pattern; 2) Measurements not adversely affected by oxidation of surface and 3) Detect sub-surface defects.The results presented here demonstrated that: 1) For cold worked stainless steel ground with 600 &amp; 1200 emery paper, the software managed to track movement of the surface accurately; 2) Oxidised surfaces could also be accurately measured and 3) There was evidence to suggest that a sub-surface linear defect was discovered. The software also suggested that point defects in the ferritic sample may be visible

The University of Manchester - Institutional Repository

Use of Digital Image Correlation (DIC) for detection of defects and monitoring of structural integrity in the nuclear industry

https://pure.manchester.ac.uk/ws/files/33530286/FULL_TEXT.PDF

Use of Digital Image Correlation (DIC) for detection of defects and monitoring of structural integrity in the nuclear industry

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The University of Manchester - Institutional Repository