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• Conference paper
  Escobar-Ruiz E, Cawley P, Nagy PB, Collison I, Wright Det al., 2013,

  ULTRASONIC NDE OF TITANIUM DIFFUSION BONDS USING SIGNAL PHASE

  , 39th Annual Review of Progress in Quantitative Nondestructive Evaluation (QNDE), Publisher: AMER INST PHYSICS, Pages: 1409-1416, ISSN: 0094-243X
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  • Citations: 3
• Conference paper
  Attarian V, Cegla F, Cawley P, 2013,

  Long Term Stability of Guided Wave Structural Health Monitoring Using Distributed Adhesively Bonded Piezoelectric Transducers

  , 9th International Workshop on Structural Health Monitoring (IWSHM), Publisher: DESTECH PUBLICATIONS, INC, Pages: 2202-2209
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• Conference paper
  Brierley N, Tippetts T, Cawley P, 2013,

  DATA FUSION FOR IMPROVING THE RELIABILITY OF AUTOMATED NON-DESTRUCTIVE INSPECTION

  , 39th Annual Review of Progress in Quantative Nondestructive Evaluation (QNDE), Publisher: AMER INST PHYSICS, Pages: 1781-1788, ISSN: 0094-243X
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• Conference paper
  Ptaszek G, Cawley P, Almond D, Pickering Set al., 2013,

  TRANSIENT THERMOGRAPHY TESTING OF UNPAINTED THERMAL BARRIER COATING SURFACES

  , 39th Annual Review of Progress in Quantitative Nondestructive Evaluation (QNDE), Publisher: AMER INST PHYSICS, Pages: 571-578, ISSN: 0094-243X
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  • Citations: 1
• Journal article
  Carandente R, Lovstad A, Cawley P, 2012,

  The influence of sharp edges in corrosion profiles on the reflection of guided waves

  , NDT & E INTERNATIONAL, Vol: 52, Pages: 57-68, ISSN: 0963-8695
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  • Citations: 23
• Journal article
  Cawley P, Cegla F, Galvagni A, 2012,

  Guided waves for NDT and permanently-installed monitoring

  , INSIGHT, Vol: 54, Pages: 594-601, ISSN: 1354-2575
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  • Citations: 54
• Journal article
  Huthwaite P, Simonetti F, 2012,

  Modeling the Measurement of Ultrasonic Beams Transmitted Through a Penetrable Acoustic Cone

  , IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL, Vol: 59, Pages: 2292-2303, ISSN: 0885-3010
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  • Citations: 1
• Journal article
  Lowe MJ, Cawley P, Galvagni A, 2012,

  Monitoring of corrosion in pipelines using guided waves and permanently installed transducers.

  , J Acoust Soc Am, Vol: 132

  Guided Wave Testing (GWT) of pipelines for the detection of corrosion has been developed over about 20 years and is now a well established method worldwide, used mostly in the oil and gas industry. The established approach is as a screening tool: GWT is used to detect the presence of significant reflectors which are then examined locally in detail using conventional methods of NDE. To date most of the equipment has been developed for deployment solely at the time of test. However recent developments include permanently-attached transducers which can be left in place after testing, for example to allow easier access for future testing at difficult locations such as buried pipes. This is enabling a new approach, in which improved sensitivity may be achieved by detecting changes with respect to earlier reference signals, and also continuous monitoring which may follow degradation during service. The presentation will include a summary of the GWT method and discussion of current research for monitoring.

  • Abstract
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• Journal article
  Huthwaite P, Simonetti F, Duric N, 2012,

  Combining time of flight and diffraction tomography for high resolution breast imaging: Initial <i>in vivo</i> results (L)

  , JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, Vol: 132, Pages: 1249-1252, ISSN: 0001-4966
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  • Citations: 19
• Journal article
  Xi X, Cegla F, Mettin R, Holsteyns F, Lippert Aet al., 2012,

  Collective bubble dynamics near a surface in a weak acoustic standing wave field

  , JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, Vol: 132, Pages: {37-47}-{37-47}, ISSN: 0001-4966

  The transport of bubbles to a neighboring surface is very important in surface chemistry, bioengineering, and ultrasonic cleaning, etc. This paper proposes a multi-bubble transport method by using an acoustic standing wave field and establishes a model that explains the multi-bubble translation by expressing the balance between Bjerknes forces and hydrodynamic forces on a bubble in a liquid medium. Results indicated that the influence of primary Bjerknes force, secondary Bjerknes force, and buoyancy force on the bubble translation depends on the position of the target bubble in the acoustic field. Moreover, it was found that increasing the size of a bubble or pressure amplitude can accelerate the bubble motion and enhance the bubble-bubble interaction. The secondary Bjerknes force between two bubbles can switch from an attractive one when they oscillate in phase to a repulsive one when the bubble oscillations are out of phase. These findings provide an insight into the multi-bubble translation near a surface and can be applied to future bubble motion control studies, especially in drug delivery, sonoporation, and ultrasonic cleaning. (C) 2012 Acoustical Society of America. [http://dx.doi.org/10.1121/1.4726009]

  • Abstract
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• Journal article
  Russell J, Long R, Duxbury D, Cawley Pet al., 2012,

  Development and implementation of a membrane-coupled conformable array transducer for use in the nuclear industry

  , INSIGHT, Vol: 54, Pages: 386-393, ISSN: 1354-2575
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  • Citations: 15
• Journal article
  Weekes B, Almond DP, Cawley P, Barden Tet al., 2012,

  Eddy-current induced thermography-probability of detection study of small fatigue cracks in steel, titanium and nickel-based superalloy

  , NDT & E INTERNATIONAL, Vol: 49, Pages: 47-56, ISSN: 0963-8695
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  • Citations: 89
• Journal article
  Long R, Russell J, Cawley P, 2012,

  Ultrasonic phased array inspection using full matrix capture

  , INSIGHT, Vol: 54, Pages: 380-385, ISSN: 1354-2575
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  • Citations: 18
• Journal article
  Jones RE, Simonetti F, Lowe MJS, Bradley IPet al., 2012,

  The Effect of Bends on the Long-Range Microwave Inspection of Thermally Insulated Pipelines for the Detection of Water

  , JOURNAL OF NONDESTRUCTIVE EVALUATION, Vol: 31, Pages: 117-127, ISSN: 0195-9298
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  • Citations: 10
• Journal article
  Fan Z, Lowe MJS, 2012,

  Interaction of weld-guided waves with defects

  , NDT & E INTERNATIONAL, Vol: 47, Pages: 124-133, ISSN: 0963-8695
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  • Citations: 40
• Journal article
  Prajapati S, Nagy PB, Cawley P, 2012,

  Potential drop detection of creep damage in the vicinity of welds

  , NDT & E INTERNATIONAL, Vol: 47, Pages: 56-65, ISSN: 0963-8695
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  • Citations: 14
• Journal article
  Carandente R, Cawley P, 2012,

  The effect of complex defect profiles on the reflection of the fundamental torsional mode in pipes

  , NDT & E INTERNATIONAL, Vol: 46, Pages: 41-47, ISSN: 0963-8695
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  • Citations: 56
• Journal article
  Lovstad A, Cawley P, 2012,

  The reflection of the fundamental torsional mode from pit clusters in pipes

  , NDT & E INTERNATIONAL, Vol: 46, Pages: 83-93, ISSN: 0963-8695
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  • Citations: 33
• Journal article
  Fletcher S, Lowe MJS, Ratassepp M, Brett Cet al., 2012,

  Detection of Axial Cracks in Pipes Using Focused Guided Waves

  , JOURNAL OF NONDESTRUCTIVE EVALUATION, Vol: 31, Pages: 56-64, ISSN: 0195-9298
  • Author Web Link
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  • Citations: 22
• Journal article
  Ptaszek G, Cawley P, Almond D, Pickering Set al., 2012,

  Artificial disbonds for calibration of transient thermography inspection of thermal barrier coating systems

  , NDT & E INTERNATIONAL, Vol: 45, Pages: 71-78, ISSN: 0963-8695
  • Author Web Link
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  • Citations: 23

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