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Conference paperAttarian 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 -
Conference paperHuthwaite 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 -
Conference paperChoi W, Skelton E, Lowe MJS, et 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- Author Web Link
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- Citations: 8
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Journal articleCawley P, Cegla F, Galvagni A, 2012,
Guided waves for NDT and permanently-installed monitoring
, INSIGHT, Vol: 54, Pages: 594-601, ISSN: 1354-2575- Author Web Link
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- Citations: 54
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Journal articleHuthwaite 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- Author Web Link
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- Citations: 1
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Journal articleLowe MJ, Cawley P, Galvagni A, 2012,
Monitoring of corrosion in pipelines using guided waves and permanently installed transducers.
, J Acoust Soc Am, Vol: 132Guided 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.
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Journal articleHuthwaite 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- Author Web Link
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- Citations: 19
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Journal articleXi X, Cegla F, Mettin R, et 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: 0001-4966The 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]
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Journal articleJones RE, Simonetti F, Lowe MJS, et 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- Author Web Link
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- Citations: 10
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Journal articlePrajapati 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- Author Web Link
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- Citations: 14
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Journal articleFan Z, Lowe MJS, 2012,
Interaction of weld-guided waves with defects
, NDT & E INTERNATIONAL, Vol: 47, Pages: 124-133, ISSN: 0963-8695- Author Web Link
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- Citations: 40
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Journal articleFletcher S, Lowe MJS, Ratassepp M, et 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
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Journal articleRibichini R, Cegla F, Nagy PB, et al., 2012,
Experimental and numerical evaluation of electromagnetic acoustic transducer performance on steel materials
, NDT & E INTERNATIONAL, Vol: 45, Pages: 32-38, ISSN: 0963-8695- Author Web Link
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- Citations: 68
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Conference paperDavies CM, Nagy P, Narayanan A, et al., 2012,
CONTINUOUS CREEP DAMAGE MONITORING USING A NOVEL POTENTIAL DROP TECHNIQUE
, ASME Pressure Vessels and Piping Conference, Publisher: AMER SOC MECHANICAL ENGINEERS, Pages: 35-+- Author Web Link
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- Citations: 4
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Conference paperHuthwaite P, Simonetti F, 2012,
DAMAGE DETECTION THROUGH SOUND SPEED RECONSTRUCTION
, 38th Annual Review of Progress in Quantitative Nondestructive Evaluation (QNDE), Publisher: AMER INST PHYSICS, Pages: 777-784, ISSN: 0094-243X- Author Web Link
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- Citations: 2
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Conference paperFan Z, Castaings M, Lowe MJS, et al., 2012,
STIFFENER BOND LINE MONITORING USING ULTRASONIC SHEAR GUIDED WAVES
, 38th Annual Review of Progress in Quantitative Nondestructive Evaluation (QNDE), Publisher: AMER INST PHYSICS, Pages: 1307-1314, ISSN: 0094-243X- Author Web Link
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- Citations: 1
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Conference paperChoi W, Skelton E, Lowe MJS, et al., 2012,
GENERIC HYBRID MODELS FOR THREE-DIMENSIONAL ULTRASONIC NDE
, 38th Annual Review of Progress in Quantitative Nondestructive Evaluation (QNDE), Publisher: AMER INST PHYSICS, Pages: 126-133, ISSN: 0094-243X- Author Web Link
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- Citations: 1
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Conference paperFan Z, Lowe MJS, 2012,
INVESTIGATION OF ULTRASONIC ARRAY MEASUREMENTS TO REFINE WELD MAPS OF AUSTENITIC STEEL WELDS
, 38th Annual Review of Progress in Quantitative Nondestructive Evaluation (QNDE), Publisher: AMER INST PHYSICS, Pages: 873-880, ISSN: 0094-243X- Author Web Link
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- Citations: 5
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Conference paperJones RE, Simonetti F, Lowe MJS, et al., 2012,
USE OF MICROWAVES FOR THE DETECTION OF CORROSION UNDER INSULATION: THE EFFECT OF BENDS
, 38th Annual Review of Progress in Quantitative Nondestructive Evaluation (QNDE), Publisher: AMER INST PHYSICS, Pages: 1665-1672, ISSN: 0094-243X- Author Web Link
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- Citations: 3
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Conference paperAttarian V, Cegla F, Cawley P, 2012,
LONG TERM STABILITY ANALYSIS OF A GUIDED WAVE SHM SYSTEM FOR PLATE-LIKE STRUCTURES
, 38th Annual Review of Progress in Quantitative Nondestructive Evaluation (QNDE), Publisher: AMER INST PHYSICS, Pages: 655-662, ISSN: 0094-243X- Author Web Link
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- Citations: 2
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