Imperial College London
Alternate

DrFredericCegla

Faculty of Engineering, Department of Mechanical Engineering

Reader in Mechanical Engineering
 
 
 
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Contact

 

+44 (0)20 7594 8096f.cegla

 
 
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Location

 

567City and Guilds BuildingSouth Kensington Campus

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Summary

 

Publications

Publication Type
Year
to

104 results found

Attarian VA, Cegla FB, Cawley P, 2014, Long-term stability of guided wave structural health monitoring using distributed adhesively bonded piezoelectric transducers, STRUCTURAL HEALTH MONITORING-AN INTERNATIONAL JOURNAL, Vol: 13, Pages: 265-280, ISSN: 1475-9217

Journal article

Xi X, Cegla F, Mettin R, Holsteyns F, Lippert Aet al., 2014, Study of non-spherical bubble oscillations near a surface in a weak acoustic standing wave field, JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, Vol: 135, Pages: 1731-1741, ISSN: 0001-4966

Journal article

Gajdacsi A, Cegla F, 2014, High Accuracy Wall Thickness Loss Monitoring, 10th International Conference on Barkhausen and Micro-Magnetics (ICBM), Publisher: AMER INST PHYSICS, Pages: 1687-1694, ISSN: 0094-243X

Conference paper

Cegla F, Jarvis A, 2014, Modeling the Effect of Roughness on Ultrasonic Scattering in 2D and 3D, 10th International Conference on Barkhausen and Micro-Magnetics (ICBM), Publisher: AMER INST PHYSICS, Pages: 595-601, ISSN: 0094-243X

Conference paper

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

Journal article

Gajdacsi A, Jarvis AJC, Cegla FB, 2013, RECONSTRUCTION OF TEMPERATURE DISTRIBUTION IN A STEEL BLOCK USING AN ULTRASONIC SENSOR ARRAY, 39th Annual Review of Progress in Quantitative Nondestructive Evaluation (QNDE), Publisher: AMER INST PHYSICS, Pages: 1166-1173, ISSN: 0094-243X

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

Conference paper

Cegla F, Jarvis A, Gajdacsi A, Cavvley Pet al., 2013, Continuous Thickness Monitoring - Experience from the Field and Lessons Learned, 9th International Workshop on Structural Health Monitoring (IWSHM), Publisher: DESTECH PUBLICATIONS, INC, Pages: 2194-2201

Conference paper

Mettin R, Frommhold PE, Xi X, Cegla F, Okorn-Schmidt H, Lippert A, Holsteyns Fet al., 2013, Acoustic bubbles: Control and interaction with particles adhered to a solid substrate, 11th International Symposium on Ultra Clean Processing of Semiconductor Surfaces (UCPSS), Publisher: TRANS TECH PUBLICATIONS LTD, Pages: 161-+, ISSN: 1012-0394

Conference paper

Jarvis AJC, Cegla FB, Bazaz H, Lozev Met al., 2013, ULTRASONIC MONITORING OF PITTING CORROSION, 39th Annual Review of Progress in Quantitative Nondestructive Evaluation (QNDE), Publisher: AMER INST PHYSICS, Pages: 1433-1440, ISSN: 0094-243X

Conference paper

Attarian V, Cegla F, Cawley P, 2013, LONG TERM STABILITY AND EXPECTED PERFORMANCE OF A GUIDED WAVE SHM SYSTEM, 39th Annual Review of Progress in Quantitative Nondestructive Evaluation (QNDE), Publisher: AMER INST PHYSICS, Pages: 270-277, ISSN: 0094-243X

Conference paper

Cawley P, Cegla F, Galvagni A, 2012, Guided waves for NDT and permanently-installed monitoring, INSIGHT, Vol: 54, Pages: 594-601, ISSN: 1354-2575

Journal article

Jarvis AJC, Cegla FB, 2012, Application of the distributed point source method to rough surface scattering and ultrasonic wall thickness measurement, JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, Vol: 132, Pages: 1325-1335, ISSN: 0001-4966

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]

Journal article

Ribichini R, Cegla F, Nagy PB, Cawley Pet 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

Journal article

Jarvis AJC, Cegla FB, 2012, SIMULATION OF THE VARIATION OF ULTRASONICALLY MONITORED THICKNESS DUE TO THE EFFECTS OF ROUGHNESS, 38th Annual Review of Progress in Quantitative Nondestructive Evaluation (QNDE), Publisher: AMER INST PHYSICS, Pages: 713-720, ISSN: 0094-243X

Conference paper

Attarian 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

Conference paper

Ribichini R, Cegla F, Nagy PB, Cawley Pet al., 2012, ASSESSMENT OF THE PERFORMANCE OF DIFFERENT EMAT CONFIGURATIONS FOR SHEAR HORIZONTAL AND TORSIONAL WAVES, 38th Annual Review of Progress in Quantitative Nondestructive Evaluation (QNDE), Publisher: AMER INST PHYSICS, Pages: 955-962, ISSN: 0094-243X

Conference paper

Cegla FB, Jarvis AJC, Davies JO, 2011, High temperature ultrasonic crack monitoring using SH waves, NDT & E INTERNATIONAL, Vol: 44, Pages: 669-679, ISSN: 0963-8695

Journal article

Xi X, Cegla FB, Lowe M, Thiemann A, Nowak T, Mettin R, Holsteyns F, Lippert Aet al., 2011, Study on the bubble transport mechanism in an acoustic standing wave field, ULTRASONICS, Vol: 51, Pages: 1014-1025, ISSN: 0041-624X

Journal article

Ribichini R, Cegla F, Nagy PB, Cawley Pet al., 2011, Study and Comparison of Different EMAT Configurations for SH Wave Inspection, IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL, Vol: 58, Pages: 2571-2581, ISSN: 0885-3010

Journal article

Cegla F, Allin J, 2011, Wireless Ultrasonic Thickness Monitoring at Elevated Temperatures, MATERIALS EVALUATION, Vol: 69, Pages: A26-A31, ISSN: 0025-5327

Journal article

Cegla FB, Cawley P, Allin J, Davies Jet al., 2011, High-Temperature (>500°C) Wall Thickness Monitoring Using Dry-Coupled Ultrasonic Waveguide Transducers, IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL, Vol: 58, Pages: 156-167, ISSN: 0885-3010

Journal article

Cegla F, Cawley P, Allin J, Davies Jet al., 2011, Ultrasonic Wall Thickness Monitoring at High Temperatures (>500°C), 8th International Workshop on Structural Health Monitoring, Publisher: DESTECH PUBLICATIONS, INC, Pages: 767-+

Conference paper

Jarvis AJC, Cegla FB, 2011, DEFECT MONITORING AT ELEVATED TEMPERATURES (>500°C) USING AN ARRAY OF ULTRASONIC WAVEGUIDES, 37th Annual Review of Progress in Quantitative Nondestructive Evaluation (QNDE), Publisher: AMER INST PHYSICS, Pages: 1679-1686, ISSN: 0094-243X

Conference paper

Ribichini R, Cegla F, Nagy PB, Cawley Pet al., 2011, EVALUATION OF ELECTROMAGNETIC ACOUSTIC TRANSDUCER PERFORMANCE ON STEEL MATERIALS, 37th Annual Review of Progress in Quantitative Nondestructive Evaluation (QNDE), Publisher: AMER INST PHYSICS, Pages: 785-792, ISSN: 0094-243X

Conference paper

Cegla FB, Allin J, Davies JO, Collins P, Cawley Pet al., 2011, ULTRASONIC WALL THICKNESS MONITORING AT HIGH TEMPERATURES (> 500°C), 37th Annual Review of Progress in Quantitative Nondestructive Evaluation (QNDE), Publisher: AMER INST PHYSICS, Pages: 1325-1332, ISSN: 0094-243X

Conference paper

Ribichini R, Cegla F, Nagy PB, Cawley Pet al., 2010, Quantitative Modeling of the Transduction of Electromagnetic Acoustic Transducers Operating on Ferromagnetic Media, IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL, Vol: 57, Pages: 2808-2817, ISSN: 0885-3010

Journal article

Cegla FB, Davies JO, 2010, ULTRASONIC CRACK MONITORING AT HIGH TEMPERATURES USING SH WAVES (> 500°C), 36th Annual Review of Progress in Quantitative Nondestructive Evaluation, Publisher: AMER INST PHYSICS, Pages: 980-987, ISSN: 0094-243X

Conference paper

Cegla F, Davies J, 2010, AN SH WAVE ARRAY FOR ULTRASONIC CRACK MONITORING AT HIGH TEMPERATURES (>500°C), 10th European Conference on Non-Destructive Testing (ECNDT 2010), Publisher: INT COMMITTEE NON-DESTRUCTIVE TESTING, Pages: 531-531

Conference paper

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