Concrete Fracture Process Zone Characterization with Fiber Optics

By E. Denarié, V. Saouma, A. Iocco, D. Varelas. 2001

58 citations recorded by the source corpus.

The characterization of the fracture process zone inside a cracked concrete specimen is investigated through optical fiber technology. Fiber Bragg gratings are used to measure the strains in the close vicinity of the crack front, thus enabling us (for the first time) to directly measure those deformations inside the concrete specimen. A detailed discussion of the experimental technique is first provided. Then, following the experimental measurements, test results are presented and discussed. Preliminary results indicate that there is a narrow zone on each side of the crack front with inelastic residual strains, and another where strains increase only in the presence of a neighboring crack tip. The width of the process zone is found to be about three times the maximum aggregate size.

Subfields: Civil and Structural Engineering, Electrical and Electronic Engineering, Mechanics of Materials

View Paper: https://www.semanticscholar.org/paper/678926b394a2633ae17529914be69001eae555d8

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In Civil and Structural Engineering

In Mechanics of Materials

Citations in the corpus

An extended FE strategy for transition from continuum damage to mode I cohesive crack propagation (2007, methodology): “The numerical P vs CMOD response is compared in Figure 22 to the available experimental data of Reference [26] and to the results obtained with the continuum model without transition.”