Experimental and Numerical Analysis of Guided Wave
il y a 3 semaines
**Experimental and numerical analysis of guided wave propagation in cables for their non-destructive evaluation**:
- Réf
- **ABG-111164**
- Sujet de Thèse- 15/02/2023- Contrat doctoral- Université Gustave Eiffel - Campus de Nantes- Lieu de travail- Nantes (Bouguenais) - Pays de la Loire - France- Intitulé du sujet- Experimental and numerical analysis of guided wave propagation in cables for their non-destructive evaluation- Champs scientifiques- Sciences de l’ingénieur
- Physique
- Mots clés- acoustic, waves, modes, cables, experimentation, signal processing, simulation, finite elements**Description du sujet**:
**Context**:
Guided waves can propagate over long distances with little loss of energy. They are of potential interest for the non-destructive evaluation and structural health monitoring of slender civil engineering structures (cables, bars, etc.). However, the development of robust monitoring methods faces several challenges. On the one hand, civil engineering structures are usually partially or completely buried in an infinite environment. They are often only accessible to one of their end. On the other hand, the multimodal and dispersive nature of guided waves complicates the interpretation of measurement results, so that their exploitation requires propagation models. In this field, significant progress has been made in recent years at Université Gustave Eiffel through the development of original numerical modeling tools, based on finite element methods dedicated to guided waves, and taking into account various phenomena [1-5]: source, presence of defects, embedment in a solid matrix, curvature of the guide, prestress
**Project**:
**References**:
[1] F. Benmeddour, F. Treyssède and L. Laguerre, “Numerical modeling of guided wave interaction with non-axisymmetric cracks in elastic cylinders”, International Journal of Solids and Structures 48, 764-774 (2011).
[3] M. Gallezot, F. Treyssède, L. Laguerre, “A modal approach based on perfectly matched layers for the forced response of elastic open waveguides”, Journal of Computational Physics 356, 391-409 (2018).
[4] F. Treyssède and L. Laguerre, “Investigation of elastic modes propagating in multi-wire helical waveguides”, Journal of Sound and Vibration 329, 1702-1716 (2010).
[5] F. Treyssède, “Dispersion curve veering of longitudinal guided waves propagating inside prestressed seven-wire strands”, Journal of Sound and Vibration 367, 56-68 (2016).
[6] H. Kwun, K. A. Bartels, J. J. Hanley, “Effects of tensile loading on the properties of elastic-wave propagation in a strand”, Journal of the Acoustical Society of America 103, 3370-3375 (1998).
[7] L. Laguerre, M. Brissaud and J. C. Aime, “Low-frequency ultrasound reflectometry device based on magnetoelastic transducers for the non destructive evaluation of steel rods and cables”, Bulletin des Laboratoires des Ponts et Chaussées 239, 7-27 (2002).
[8] F. Treyssède, “Investigation of the interwire energy transfer of elastic guided waves inside prestressed cables”, Journal of the Acoustical Society of America 140, 498-509 (2016).
**Prise de fonction**:
- 02/10/2023**Nature du financement**:
- Contrat doctoral**Précisions sur le financement**:
- 3-year doctoral contract (1858€ gross monthly for the first 2 years, 2165€ for the third)**Présentation établissement et labo d'accueil**:
- Université Gustave Eiffel - Campus de NantesPlease visit the website of the laboratory:
**Intitulé du doctorat**:
- PhD in Engineering Sciences (Acoustics)**Pays d'obtention du doctorat**:
- France**Etablissement délivrant le doctorat**:
- Centrale Nantes or Le Mans Université**Ecole doctorale**:
- Sciences de l'Ingénierie et des Systèmes (SIS)Applicants should hold a Master or equivalent in mechanics, acoustics or physics and have a strong background in numerical methods, finite elements and waves or structural dynamics. An interest for experimentation would be appreciable. We are looking for excellent and highly motivated students.- 15/04/2023
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