Towards an image quality criterion to optimize Digital image correlation. Use of an analytical model to optimize acquisition conditions

2022 ◽  
Vol 148 ◽  
pp. 107792
J.P. Goulmy ◽  
S. Jégou ◽  
L. Barrallier
D. Gentile ◽  
G. Iannitti ◽  
N. Bonora

The leak area of circumferential part-through crack in pipe under bending depends on the location of the crack with respect to the bending plane. In LBB analysis, taking the crack symmetrically placed with respect to the bending plane no necessarily is a conservative assumption. In this work the COD distribution of circumferential cracks in pipes, off-centered placed with respect to the bending plane, was investigated experimentally. Thick and thin pipe geometries have been analyzed examining different crack lengths and off-axis angle values. The COD distributions have been measured by means of digital image correlation (DIC) technique and used to validate an analytical model (HCM Hodograph Cone Method) proposed by the authors.

Stéphen Hedan ◽  
Philippe Cosenza ◽  
Valéry Valle ◽  
Patrick Dudoignon ◽  
Anne-Laure Fauchille ◽  

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