| 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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Kuutti, Juha
VTT Technical Research Centre of Finland
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (17/17 displayed)
- 2024Constraint effects on fracture toughness of ductile cast iron in the ductile regimecitations
- 2022Effect of Welding Direction and Bead Pattern in Alloy 52 / SA508 Repair Weld
- 2022Sensitivity of the Master Curve reference temperature T0 to the crack front curvaturecitations
- 2022Miniature C(T) Specimens-Pinhole Eccentricity and the Effect of Crack Opening Displacement Measurement Locationcitations
- 2021Evaluation of an Alloy 52 / Cladded Carbon Steel Repair Weld by Cold Metal Transfer
- 2021Online nonlinear ultrasound imaging of crack closure during thermal fatigue loadingcitations
- 2020Numerical assessment of the effects of microcrack interaction in AM componentscitations
- 2020A52M/SA502 Dissimilar Metal RPV Repair Weld:Evaluation of different techniques
- 2020A52M/SA502 Dissimilar Metal RPV Repair Weld
- 2020A52M/SA52 Dissimilar Metal RPV Repair Weld:Experimental Evaluation and Post-Weld Characterizationscitations
- 2020A52M/SA52 Dissimilar Metal RPV Repair Weld : Experimental Evaluation and Post-Weld Characterizationscitations
- 2018Comparison of ASME XI and BS7910 Allowable Surface Flaw Size Evaluation Procedures in Piping Componentscitations
- 2017Use of CTOD as crack driving force parameter for low-cycle thermal fatigue
- 2013Disposal canister shock absorber tests and analysis
- 2012A local remeshing procedure to simulate crack propagation in quasi-brittle materialscitations
- 2011Fracture Assessment of Reactor Circuit (FRAS):Advanced numerical fracture assessment methods
- 2010Simulation of ice crushing experiment using FE-model update technique
Places of action
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article
Online nonlinear ultrasound imaging of crack closure during thermal fatigue loading
Abstract
Funding Information: This paper was funded by the Finnish radiation safety program SAFIR2022 . Trueflaw contributed the thermal fatigue cycle for the flaw. All contributions are greatfully acknowledged. Publisher Copyright: © 2021 The Authors ; A thermal fatigue surface crack (6 mm deep × 23 mm wide) in a thick austenitic stainless steel plate is opened and closed with thermal heating and cooling cycles. This closing and opening of the crack is recorded with using fundamental wave amplitude difference (FAD) technique with 5 MHz 64 element phased array probe. In addition, the contact pressure and crack opening state at different time intervals were estimated using finite element (FE) simulation. In combination with the nonlinear output from the FAD and FE simulation gave insight at which level the contact pressure or the distance between crack faces prevents the contact acoustic nonlinearity (CAN) from happening. Predictably, no clear nonlinear response was recorded at crack face locations experiencing high contact pressure and on the locations where the crack could be considered fully open, as predicted by the FE simulation. Therefore, the FAD technique can be utilized within the constraints quantified in the paper. ; Peer reviewed