Grid pattern for in-plane strain measurements by digital image processing

Authors
Barone, S Berghini, M Bertini, L
Citation
S. Barone et al., Grid pattern for in-plane strain measurements by digital image processing, J STRAIN A, 36(1), 2001, pp. 51-59
Citations number
23
Categorie Soggetti
Mechanical Engineering
Journal title
JOURNAL OF STRAIN ANALYSIS FOR ENGINEERING DESIGN
ISSN journal
03093247 → ACNP
Volume
36
Issue
1
Year of publication
2001
Pages
51 - 59
Database
ISI
SICI code
0309-3247(200101)36:1<51:GPFISM>2.0.ZU;2-B
Abstract
This paper presents a non-contact and non-destructive method for full-field in-plane strain measurements. Digital image processing is employed for mon itoring the deformations of grid lines marked on a planar surface of a comp onent or a specimen. Full-field in-plane strain distributions are obtained by processing the geometrical characteristics of the grid with computer gra phics algorithms. The strain field determined in the necking zone of a tens ile specimen has demonstrated the benefit of the method.