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• Conference paper
  Pettit JR, Walker A, Lowe MJS, 2014,

  A Stiffness Reduction Method for Efficient Modelling of Waves in Unbound Media Using Commercially Available Finite Elements Packages

  , 10th International Conference on Barkhausen and Micro-Magnetics (ICBM), Publisher: AMER INST PHYSICS, Pages: 579-586, ISSN: 0094-243X
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• Conference paper
  Seher M, Huthwaite P, Lowe M, Nagy P, Cawley Pet al., 2014,

  Numerical Design Optimization of an EMAT for A0 Lamb Wave Generation in Steel Plates

  , 10th International Conference on Barkhausen and Micro-Magnetics (ICBM), Publisher: AMER INST PHYSICS, Pages: 340-347, ISSN: 0094-243X
  • Author Web Link
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  • Citations: 23
• Conference paper
  Corcoran J, Davies C, Nagy P, Cawley Pet al., 2014,

  POTENTIAL DROP STRAIN SENSOR FOR CREEP MONITORING

  , ASME 2014 Pressure Vessels and Piping Conference (PVP-2014), Publisher: AMER SOC MECHANICAL ENGINEERS
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  • Citations: 1
• Journal article
  Cegla FB, Huthwaite PE, Lowe MJ, 2013,

  Inspection vs structural health monitoring: Manual ultrasonic thickness measurements compared to monitoring with permanently installed sensors.

  , J Acoust Soc Am, Vol: 134

  Corrosion is a major issue in industry and inspection and monitoring for wall thickness loss are important to assess the structural integrity of pipework and process vessels. Manual ultrasonic thickness measurements are widely used; however, they are also notoriously unreliable because of operator errors. Therefore, automated inspection scans and monitoring at fixed locations with permanently installed sensors are becoming more attractive; they help to remove some of the error introduced by operators. However, this raises the question of what the underlying uncertainties of automated ultrasonic wall thickness measurements are. A key contributor to the uncertainty is the surface roughness condition and the authors have been researching this topic for some time. This talk will give an overview of the physics of scattering of ultrasonic waves from rough corroded surfaces. The different scales of roughness will be discussed, and a simulation technique based on the Distributed Point Source Method (DPSM) to model the scattering and its experimental validation will be presented. The need for statistical results makes both the speed and accuracy of the simulation very important. Finally, based on the simulations, results of the estimated ultrasonic measurement errors due to roughness are presented.

  • Abstract
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• Journal article
  Ptaszek G, Cawley P, Almond D, Pickering Set al., 2013,

  Transient thermography testing of unpainted thermal barrier coating (TBC) systems

  , NDT & E INTERNATIONAL, Vol: 59, Pages: 48-56, ISSN: 0963-8695
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  • Citations: 37
• Journal article
  Duxbury D, Russell J, Lowe M, 2013,

  The effect of variation in phased array element performance for Non-Destructive Evaluation (NDE)

  , ULTRASONICS, Vol: 53, Pages: 1065-1078, ISSN: 0041-624X
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  • Citations: 8
• Journal article
  Huthwaite P, Simonetti F, 2013,

  High-resolution guided wave tomography

  , WAVE MOTION, Vol: 50, Pages: 979-993, ISSN: 0165-2125
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  • Citations: 134
• Journal article
  Cawley P, Cegla F, Stone M, 2013,

  Corrosion Monitoring Strategies-Choice Between Area and Point Measurements

  , JOURNAL OF NONDESTRUCTIVE EVALUATION, Vol: 32, Pages: 156-163, ISSN: 0195-9298
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  • Citations: 20
• Journal article
  Duxbury DJ, Russell JD, Lowe MJS, 2013,

  Accurate two-dimensional modelling of piezo-composite array transducer elements

  , NDT & E INTERNATIONAL, Vol: 56, Pages: 17-27, ISSN: 0963-8695
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  • Citations: 2
• Journal article
  Huthwaite P, Ribichini R, Cawley P, Lowe MJSet al., 2013,

  Mode Selection for Corrosion Detection in Pipes and Vessels via Guided Wave Tomography

  , IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL, Vol: 60, Pages: 1165-1177, ISSN: 0885-3010
  • Author Web Link
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  • Citations: 53
• Journal article
  Wagner R, Goncalves O, Demma A, Lowe Met al., 2013,

  Guided wave testing performance studies: comparison with ultrasonic and magnetic flux leakage pigs

  , INSIGHT, Vol: 55, Pages: 187-196, ISSN: 1354-2575
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  • Citations: 18
• Journal article
  Huthwaite P, Zwiebel AA, Simonetti F, 2013,

  A New Regularization Technique for Limited-View Sound-Speed Imaging

  , IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL, Vol: 60, Pages: 603-613, ISSN: 0885-3010
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  • Citations: 25
• Journal article
  Fan Z, Castaings M, Lowe MJS, Biateau C, Fromme Pet al., 2013,

  Feature-guided waves for monitoring adhesive shear modulus in bonded stiffeners

  , NDT & E INTERNATIONAL, Vol: 54, Pages: 96-102, ISSN: 0963-8695
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  • Citations: 50
• Journal article
  Lhémery A, Saffari N, Lowe M, 2013,

  Preface

  , Journal of Physics: Conference Series, Vol: 457, ISSN: 1742-6588
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• Conference paper
  Huthwaite P, Simonetti F, Lowe MJS, 2013,

  Ultrasonic quantitative imaging with limited view arrays

  , Pages: 714-721, ISSN: 0094-243X

  Quantitative imaging has potential to improve the reliability of damage detection over traditional reflection imaging. However, it is particularly prone to severe artefacts when only a limited aperture is used to measure data. We have introduced VISCIT, the virtual image space component iterative technique, to address this, providing significantly more accurate velocity map reconstructions from both numerical and experimental data.

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  • Citations: 1
• Conference paper
  Galvagni A, Cawley P, 2013,

  PERMANENTLY INSTALLED GUIDED WAVE PIPELINE MONITORING

  , 39th Annual Review of Progress in Quantative Nondestructive Evaluation (QNDE), Publisher: AMER INST PHYSICS, Pages: 159-166, ISSN: 0094-243X
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  • Citations: 1
• Conference paper
  Choi W, Skelton E, Lowe MJS, Craster Ret al., 2013,

  UNIT CELL FINITE ELEMENT MODELLING FOR ULTRASONIC SCATTERING FROM PERIODIC SURFACES

  , 39th Annual Review of Progress in Quantitative Nondestructive Evaluation (QNDE), Publisher: AMER INST PHYSICS, Pages: 83-90, ISSN: 0094-243X
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  • Citations: 8
• Conference paper
  Huthwaite P, Simonetti F, Lowe MJS, 2013,

  ULTRASONIC QUANTITATIVE IMAGING WITH LIMITED VIEW ARRAYS

  , 39th Annual Review of Progress in Quantitative Nondestructive Evaluation (QNDE), Publisher: AMER INST PHYSICS, Pages: 714-721, ISSN: 0094-243X
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• Conference paper
  Fan Z, Lowe MJS, 2013,

  CHARACTERIZATION OF INHOMOGENEOUS AND ANISOTROPIC STEEL WELDS BY ULTRASONIC ARRAY MEASUREMENTS

  , 39th Annual Review of Progress in Quantitative Nondestructive Evaluation (QNDE), Publisher: AMER INST PHYSICS, Pages: 849-856, ISSN: 0094-243X
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  • Citations: 2
• Conference paper
  Tippetts T, Brierley N, Cawley P, 2013,

  DATA REGISTRATION FOR AUTOMATED NON-DESTRUCTIVE INSPECTION WITH MULTIPLE DATA SETS

  , 39th Annual Review of Progress in Quantitative Nondestructive Evaluation (QNDE), Publisher: AMER INST PHYSICS, Pages: 1773-1780, ISSN: 0094-243X
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  • Citations: 4

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