scholarly journals Wall expansion assessment of an intracranial aneurysm model by a 3D Digital Image Correlation System

Measurement ◽  
2016 ◽  
Vol 88 ◽  
pp. 262-270 ◽  
Author(s):  
Raquel O. Rodrigues ◽  
Diana Pinho ◽  
David Bento ◽  
Rui Lima ◽  
João Ribeiro
Keyword(s):  
Digital Image Correlation ◽  
Intracranial Aneurysm ◽  
Digital Image ◽  
Image Correlation ◽  
3D Digital Image Correlation ◽  
Correlation System ◽  
Aneurysm Model

scholarly journals A Complex Review of the Possibilities of Residual Stress Analysis Using Moving 2D and 3D Digital Image Correlation System

2021 ◽  
Vol 71 (1) ◽  
pp. 61-78
Author(s):  
Hagara Martin ◽  
Pástor Miroslav
Keyword(s):  
Digital Image Correlation ◽  
Residual Stresses ◽  
Stress Analysis ◽  
Digital Image ◽  
Image Correlation ◽  
Measuring Device ◽  
Full Field ◽  
3D Digital Image Correlation ◽  
Correlation System ◽  
Special Strain

Abstract Understanding the levels of residual stresses in the material is very important in predicting the service life of structural elements. One of the most widely used techniques to quantify them is the drilling method, where a small hole is milled in the structure. If the residual stresses are present, stress redistribution will occur, resulting in deformation of the hole surroundings. Nowadays, there is an effort to replace the conventionally used strain gauges, i.e. special strain gauge rosettes, with full-field optical experimental techniques. This paper deals with analysing the possibilities of measuring the relieved strains/stresses with a unique drilling/measuring device, which, unlike other non-commercial measuring systems, uses the moving digital image correlation (DIC) system. Since correlation systems do not tend to move during operation, an analysis was performed describing the effect of changing the position of the single and stereo camera correlation systems on the quality of the results of the strain/stress analysis performed in the vicinity of the milled hole. The conclusion from the analyses performed is that there is no significant accumulation of correlation errors during measurement. Therefore, the information on the magnitudes of the strains/stresses relieved obtained by the moving DIC system can be used to quantify the residual stresses with an expected error corresponding to the sensitivity of this full-field optical experimental technique.

Error estimations of 3D digital image correlation measurements

2006 ◽  
Author(s):  
Thomas Becker ◽  
Karsten Splitthof ◽  
Thorsten Siebert ◽  
Peter Kletting
Keyword(s):  
Digital Image Correlation ◽  
Digital Image ◽  
Image Correlation ◽  
3D Digital Image Correlation ◽  
Error Estimations
Sign in / Sign up

Export Citation Format

Share Document