Non-destructive monitoring of fiber orientation using AC-IS: An industrial-scale application

Özyurt, Nilüfer; Mason, Thomas O.; Shah, Surendra P.

doi:10.1016/j.cemconres.2006.05.026

Cited by 98 publications

(40 citation statements)

References 9 publications

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“…This electrical method uses alternative current with various ranges of frequency. Results provide data on distribution and density of fibres [13], but this technology cannot be easily transferred on site; notably because of the nature of probes. Image analysis on concrete samples also allows the assessment [14].…”

Section: Article In Pressmentioning

confidence: 97%

Characterisation of fibres distribution in a steel fibre reinforced concrete with electrical resistivity measurements

Lataste

Behloul²,

Breysse

2008

NDT & E International

129

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Section: Article In Pressmentioning

confidence: 97%

Characterisation of fibres distribution in a steel fibre reinforced concrete with electrical resistivity measurements

Lataste

Behloul²,

Breysse

2008

NDT & E International

129

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“…Furthermore, the techniques based on the introduction of electrodes in the material are not suitable for an extensive measurement campaign as required by building monitoring. For these reasons, several innovative electrical measurement methods have been presented [1][2][3][4][5][6][7][8]. They are founded on different electromagnetic phenomena.…”

Section: Introductionmentioning

confidence: 99%

A compensated magnetic probe for steel fiber reinforced concrete monitoring

2010

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SFRC, steel fiber reinforced concrete, is a widely employed material in building construction. The fibers assure a better mechanical behavior with respect to plain concrete. Testing the material "on the site" represents a very important goal. In particular, there is a strong need to have a reliable measurement method available which allows assessing information about size, orientation and concentration of the fibers. Currently, the measurement techniques present some important restrictions (laboratory applications only, sensitivity to the humidity, complexity, cost etc). This paper presents a new approach, based on a simple, low-cost sensor employing a Cshaped ferrite core. Four coils have been wound on it: two provides the generation of the magnetic flux and two allow picking up the emf. By leaning the probe on the SFRC surface and by measuring the variation of the mutual inductance between the two pairs of winding, it is possible to discriminate the average orientation of the fibers, and to obtain information about their concentration. It has also been proven that the size and the geometrical properties of the fibers result in a variation of the power losses.

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“…The resolution of GPR system is limited to 100mm for commercial systems due owing to the wavelength used [17,18] which is not really suitable for the majority of artifacts of interest in structural assessment. Other electromagnetic techniques, such as electrical resistance measurement [19], impedance spectroscopy [20] and electrical resistance tomography [21] are reported to be used for inspection and evaluation of concrete structures, but they all require a perfect electrical contact between the electrode and the target surface.…”

Section: Introductionmentioning

confidence: 99%

Non-destructive evaluation of concrete using a capacitive imaging technique: Preliminary modelling and experiments

Yin

Hutchins

Diamond

et al. 2010

Cement and Concrete Research

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This paper describes the application of capacitive imaging to the inspection of concrete. A two-dimensional finite-element method is employed to model the electric field distribution from capacitive imaging probe, and how it interacts with concrete samples. The results indicate that the capacitive imaging technique could be used to detect micro-cracks on the surface of concrete samples, as well as sub-surface air voids and steel reinforcement bars.

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Non-destructive monitoring of fiber orientation using AC-IS: An industrial-scale application

Cited by 98 publications

References 9 publications

Characterisation of fibres distribution in a steel fibre reinforced concrete with electrical resistivity measurements

Characterisation of fibres distribution in a steel fibre reinforced concrete with electrical resistivity measurements

A compensated magnetic probe for steel fiber reinforced concrete monitoring

Non-destructive evaluation of concrete using a capacitive imaging technique: Preliminary modelling and experiments

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