New Mathematics for a Safer World: Wave Propagation in Heterogeneous Materials

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New Mathematics for a Safer World: Wave Propagation in Heterogeneous Materials

 12 - 15 Jun 2017

ICMS, 15 South College Street Edinburgh

Scientific Organiser

  • Anthony Croxford, University of Bristol
  • Bruno Lombard, Laboratoire de Mécanique et Acoustique
  • Anthony Mulholland, University of Strathclyde
  • Katy Tant, University of Strathclyde
  • Fabien Treyssede, IFSTTAR

About:

There are safety critical structures all around us such as nuclear plants, aircraft, gas pipelines, bridges and railway tracks. They are safety critical since any failure is potentially catastrophic. To avoid such disasters these structures are checked periodically for the presence of flaws and other precursors to the component failing. This is performed at various stages in the lifetime of the component: at the manufacturing stage, while the component is in service, and to assess the component for re-manufacturing at the end of its lifetime. Safety has become more pressing of late as many of these structures are operating well beyond their intended lifespan. To address this problem there have been rapid developments in the types of ultrasonic sensors that are used to find these flaws and cracks. These sensors produce massive data sets and therefore require a matched development in the mathematical algorithms used to extract the knowledge from this data. To enable this development this workshop brought together leading mathematicians, engineers and those from other disciplines.

To view photographs, click here.

Speakers

  • Andreas Schumm, Électricité de France - From Penny Shaped Cracks to Perfectly Matched Layers

  • Alain Leger, CNRS - Wave Propagation in Bonded Domains: Changing a Thin Layer Into a Surface

  • Fabien Treyssede, IFSTTAR - On the Modelling of Elastic Waveguides Coupled to Infinite Media

  • Katy Tant, University of Strathclyde - A Transdimensional Bayesian Approach for Material Mapping and Image Correction

  • Alexander Velichko, University of Bristol - Ultrasonic Defect Characterisation Using Parametric-Manifold Mapping

  • Ian Collison, Rolls-Royce - Materials Characterisation Through Ultrasonic Inspection

  • Kim Pham, École Nationale Supérieure de Techniques Avancées - Homogenization of Resonant Interface for Wave Propagation

  • Ernst Niederleithinger, Bundesanstalt für Materialforschung und -prüfung - Detecting Subtle Changes in Concrete Constructions by Ultrasound and Coda Wave Interferometry

  • Liliana Borcea, University of Michigan - Wave Propagation in Random Waveguides with Turning Points

  • David Abrahams, Isaac Newton Institute for Mathematical Sciences - Improved Convergence of Eigenfunction Expansions and its Use for Tamper Detection of Cargo Containers

  • Vincent Pagneux, Université du Maine - Scattering of Acoustic Waves with Loss, Gain and Symmetry

  • Jay Walton, Texas A&M University - An Approach to Determining Material Parameters and Residual Stress from Ultrasound Interrogation of a Nonlinear Elastic Body

  • Cédric Bellis, Laboratoire de Mécanique et d'Acoustique - Defect Identification Using Topological Sensitivity Approaches and Piezoelectric Transducer Modelling

  • Yann Capdeville, CNRS, Université de Nantes - Homogeneization and the Elastic Full Waveform Inverse Problem

  • Andrew Tweedie, PZFlex - Improving Defect Detectability in Composite Components Using Time Domain FEA Simulation

  • Vladislav Aleshin, Institute of Electronics, Microelectronics and Nanotechnology - Modelling of Acoustic Waves and Vibrations in Materials Containing Frictional Cracks with Rough Faces

  • Koen Van Den Abeele, KU Leuven - Nonlinearity Based Signal Processing for Defect Detection

  • Hélène Barucq, INRIA - Using Trefftz-DG Numerical Methods for Solving Wave Equations in Heterogeneous Media

  • Anne-Sophie Bonnet-BenDhia, CNRS - Invisible Obstacles in Waveguides

  • Bruno Lombard, Laboratoire de Mécanique et Acoustique, CNRS - Modelling of Nonlinear Waves in Solids with Slow Dynamics

  • Jean-François Mercier, École Nationale Supérieure de Techniques Avancées - Homogenization of an Array of Air Bubbles in Water with Minneart Resonance

  • Knut Solna, University of California - Beam-Wave Backscattering in Random Multi Scale Media and Imaging

  • Andrew Curtis, University of Edinburgh - Imaging Solid Media Using Marchenko Methods and Multiply-Scattered Waves

  • Aleksey Pichugin, Brunel University London - Direct Asymptotic Modelling of Sources of Laser-Generated Ultrasound

  • Alessandro Marzani, University of Bologna - Locally Resonant Metabarrier to Open Surface Waves Band Gaps at Seismic Length Scale

  • Marc Deschamps, Université Bordeaux - Interaction of Guided Waves with Cracks in an Embedded Multilayered Anisotropic Plate by a Boundary Element Approach

  • Artur Gower, University of Manchester - Characterising Random Media From Backscattering

  • Vahan Baronian, CEA LIST - Imaging Defects in an Elastic Waveguide Using Time-Dependent Surface Data

  • Francis Watson, DSTL - Sensing Challenges in Complex Environments

  • Erica Galetti, University of Edinburgh - Nonlinear Tomography for Subsurface Imaging

  • Eric Savin, Onera - Kinetic Models for Sound Propagation in Unsteady Heterogeneous Flows

Sponsors and Funders:

The organisers of the workshop gratefully acknowledge the financial support of The Institute of Mathematics and its Applications (IMA)