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- Title
ESPI Measurements of Strain on a CFRP-Reinforced Bending Beam.
- Authors
Hack, E.; Schumacher, A.
- Abstract
This paper presents 3D electronic speckle pattern interferometry (ESPI) measurement results of strain components at the end of a carbon-fibre reinforced polymer (CFRP) plate adhesively bonded to a reinforced concrete beam. To minimise speckle decorrelation because of the inevitable rigid-body motion of the measured specimen, the load was increased in small increments. Two evaluation schemes are compared: the step-by-step addition of the measured displacement components and regain of the correlation by image shifting. Strain is evaluated by interpolating the in-plane displacement measurements along selected lines, and is compared with results from finite element analysis (FEA). An uncertainty estimate is given.
- Subjects
FIBER-reinforced plastics; STRAINS &; stresses (Mechanics); GIRDERS; INTERFEROMETRY; FINITE element method
- Publication
Strain, 2007, Vol 43, Issue 3, p235
- ISSN
0039-2103
- Publication type
Article
- DOI
10.1111/j.1475-1305.2007.00339.x