| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Zastavnik, Filip
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (22/22 displayed)
- 2020Local bending stiffness identification of beams using simultaneous Fourier-series fitting and shearography (vol 443, pg 764, 2019)
- 2019Local bending stiffness identification of beams using simultaneous Fourier-series fitting and shearographycitations
- 2016The Ultrasonic Polar Scan for Composite Characterization and Damage Assessment: Past, Present and Futurecitations
- 2015Ultrasonic polar scan imaging of fatigued fiber reinforced composites
- 2015The quasi-harmonic ultrasonic polar scan for material characterization: Experiment and numerical modelingcitations
- 2015Calibration and correction procedure for quantitative out-of-plane shearographycitations
- 2015An ultrasonic strain gauge
- 2014Damage Signature of Fatigued Fabric Reinforced Plastics in the Pulsed Ultrasonic Polar Scan
- 2014Detection and Localization of Delaminations in Thin Carbon Fiber Reinforced Composites with the Ultrasonic Polar Scancitations
- 2014Detection and Localization of Delaminations in Thin Carbon Fiber Reinforced Composites with the Ultrasonic Polar Scan
- 2014A novel ultrasonic strain gauge for single-sided measurement of a local 3D strain field
- 2014A novel ultrasonic strain gauge for single-sided measurement of a local 3D strain fieldcitations
- 2014An Ultrasonic Strain Gauge
- 2014Pitfalls in the experimental recording of ultrasonic (backscatter) polar scans for material characterizationcitations
- 2014Extraction of bulk wave characteristics from a pulsed ultrasonic polar scancitations
- 2014Ultrasonic Characterizaion of Subsurface 2D Corrugationcitations
- 2014Identification of the elastic properties of isotropic and orthotropic thin-plate materials with the pulsed ultrasonic polar scan
- 2014Nondestructive damage assessment in fiber reinforced composites with the pulsed ultrasonic polar scancitations
- 2014The pulsed ultrasonic backscatter polar scan and its applications for NDT and material characterization
- 2014Errors in shearography measurements due to the creep of the PZT shearing actuatorcitations
- 2012'Gradient' polar scan technique for material characterizationcitations
- 2012Polar scan technique for material characterization and identification of new operating regimes
Places of action
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document
An ultrasonic strain gauge
Abstract
A method is introduced for the measurements of strain exploiting the interaction between ultrasound waves and characteristics of the insonified specimen. First, the response of obliquely incident harmonic waves to a deterministic surface roughness is utilized. Analysis of backscattered amplitudes in Bragg diffraction geometry then yields a measure for the in-plane strain field by mapping any shift in angular dependency. Secondly, the analysis of the reflection characteristics of normal incidence pulsed waves in frequency domain provides the out-of-plane normal strain field component, simply by tracking any change in the stimulation condition for a thickness resonance. As such, the developed method yields an absolute, contactless and single-sided mapping of a local 3D strain field, in which both sample preparation and alignment procedure are ubiquitous. The ultrasonic strain gauge is applicable to any material, though under the restriction that a deterministic surface roughness is present. Results are presented for cold-rolled DC06 steel samples onto which skin passing of the work rolls is applied. The samples have been mechanically loaded, introducing plastic strain levels ranging from 2% to 35%. The ultrasonically measured strains have been validated with other strain measurement techniques, yielding good agreement. As the ultrasonic strain gauge provides all three strain field components, we extracted Lankford ratios for the DC06 steel sheet at different applied plastic strain levels revealing a strain dependent plastic anisotropy of the DC06 steel.