Influence of the uncertainty of elastic constants on the modelling of ultrasound propagation through multi-pass austenitic welds. Impact on non-destructive testing
| Autor: | Gilles Corneloup, Jean Mailhé, B. Chassignole, Cécile Gueudré, Marie-Aude Ploix |
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| Přispěvatelé: | Laboratoire de Mécanique et d'Acoustique [Marseille] (LMA ), Aix Marseille Université (AMU)-École Centrale de Marseille (ECM)-Centre National de la Recherche Scientifique (CNRS), EDF (EDF), ANR-16-CE08-0028,MUSCAD,Méthodes ultrasonores pour la caractérisation de matériaux de composants nucléaires pour l'amélioration du Diagnostic(2016), Centre National de la Recherche Scientifique (CNRS)-Aix Marseille Université (AMU)-École Centrale de Marseille (ECM) |
| Rok vydání: | 2019 |
| Předmět: |
0209 industrial biotechnology
Materials science 02 engineering and technology Welding engineering.material [SPI.MAT]Engineering Sciences [physics]/Materials law.invention [SPI]Engineering Sciences [physics] 020901 industrial engineering & automation 0203 mechanical engineering law Nondestructive testing General Materials Science Sensitivity (control systems) Austenitic stainless steel ComputingMilieux_MISCELLANEOUS [SPI.ACOU]Engineering Sciences [physics]/Acoustics [physics.class-ph] Propagation of uncertainty business.industry Mechanical Engineering Ultrasonic testing Mechanics 020303 mechanical engineering & transports Mechanics of Materials engineering Ultrasonic sensor business Beam (structure) |
| Zdroj: | International Journal of Pressure Vessels and Piping International Journal of Pressure Vessels and Piping, 2019, 171, pp.125-136. ⟨10.1016/j.ijpvp.2019.02.011⟩ International Journal of Pressure Vessels and Piping, Elsevier, 2019, 171, pp.125-136. ⟨10.1016/j.ijpvp.2019.02.011⟩ |
| ISSN: | 0308-0161 |
| Popis: | Ultrasonic NDT is used on austenitic stainless steel welds in PWRs. Propagation modelling facilitates diagnostic concerning the detection of a possible defect if a realistic description of those heterogeneous anisotropic welds is introduced. A macrography, or MINA model, coupled with the ultrasonic code ATHENA, reproduces the deviations and divisions of the beam. In certain cases, some discrepancies between theory and experimentation are observed, and this study shows that they can be partly attributed to the uncertainty of the elastic constants Cij, complex to evaluate and measured on specimens sometimes little representative of the welded metal. We chose the seismogram as descriptor of phenomena to keep a maximum amount of information, to generate sensitivity and uncertainty maps. The zones sensitive (or not) to the variations of each Cij are revealed, helping in the choice of the test configurations. The analytical uncertainty propagation method is used to quantify the influence of Cij variability on the propagation simulation. The deviation in position and in time of flight of a classical ultrasonic test (NDT) is clearly shown. |
| Databáze: | OpenAIRE |
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