Imperial College London
Portrait Picture

ProfessorMichaelLowe

Faculty of Engineering, Department of Mechanical Engineering

Head of Department of Mechanical Engineering
 
 
 
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Contact

 

+44 (0)20 7594 7000m.lowe Website

 
 
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Assistant

 

Ms Nina Hancock +44 (0)20 7594 7068

 
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Location

 

577DCity and Guilds BuildingSouth Kensington Campus

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Summary

 

Publications

Publication Type
Year
to

321 results found

Duxbury D, Lowe M, Russell J, 2011, Effects of variation in phased array element performance

When phased array probes are used for ultrasonic inspection it is necessary to ensure that consistent performance is achieved. If Full Matrix Capture (FMC) is used to record inspection data the most appropriate way of doing this is to assess transducer performance on an element by element basis rather than assess a specific beam.The rationale for this approach is that any beam can be synthetically produced from FMC data, so it is not logical to couple probe calibration with a particular beam. This paper presents a model based study that aims to place specifications on element performance. The effect of element sensitivity, phase, and non-functioning elements has been investigated using an array beam model, based on Huygen's principle, to carry out Monte Carlo simulations. This has revealed that the dominant result of variations in element performance is the introduction of beam artefacts, such as the creation of side lobes. Results will be presented from simulations of a number of beam types at several centre frequencies that show that focused beams are more resistant to artefacts than plane beams, and the effect of element phase is dependant on probe bandwidth. General guidelines for acceptable variations between elements will also be presented. © (2011) by the British Institute of Non-Destructive Testing. All rights reserved.

Conference paper

Lowe M, Saffari N, Lhemery A, Deschamps M, Leger A, Abrahams Det al., 2011, Journal of Physics: Conference Series: Preface, Journal of Physics: Conference Series, Vol: 269, ISSN: 1742-6588

Journal article

Jones RE, Simonetti F, Lowe MJS, Bradley IPet al., 2011, USE OF MICROWAVES FOR THE DETECTION OF CORROSION UNDER INSULATION: A SENSITIVITY STUDY, 37th Annual Review of Progress in Quantitative Nondestructive Evaluation (QNDE), Publisher: AMER INST PHYSICS, Pages: 1714-1721, ISSN: 0094-243X

Conference paper

Duxbury D, Russell J, Lowe M, 2011, DESIGNING A CALIBRATED FULL MATRIX CAPTURE BASED INSPECTION, 37th Annual Review of Progress in Quantitative Nondestructive Evaluation (QNDE), Publisher: AMER INST PHYSICS, Pages: 851-858, ISSN: 0094-243X

Conference paper

Rajagopal P, Skelton E, Lowe M, Craster R, Russell Jet al., 2011, GENERIC TIME-DOMAIN HYBRID MODELS FOR ULTRASONIC NDE, 37th Annual Review of Progress in Quantitative Nondestructive Evaluation (QNDE), Publisher: AMER INST PHYSICS, Pages: 67-74, ISSN: 0094-243X

Conference paper

Fan Z, Lowe MJS, 2011, SCATTERING OF WELD GUIDED MODES FROM DEFECTS LOCATED AROUND THE WELD, 37th Annual Review of Progress in Quantitative Nondestructive Evaluation (QNDE), Publisher: AMER INST PHYSICS, Pages: 153-160, ISSN: 0094-243X

Conference paper

Connolly GD, Lowe MJS, Temple JAG, Rokhlin SIet al., 2010, Correction of ultrasonic array images to improve reflector sizing and location in inhomogeneous materials using a ray-tracing model, JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, Vol: 127, Pages: 2802-2812, ISSN: 0001-4966

Journal article

Ratassepp M, Fletcher S, Lowe MJS, 2010, Scattering of the fundamental torsional mode at an axial crack in a pipe, JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, Vol: 127, Pages: 730-740, ISSN: 0001-4966

Journal article

Duxbury D, Russell J, Lowe M, 2010, Designing a Calibrated Full Matrix Capture Based Inspection

Conference paper

Jones RE, Simonetti F, Lowe MJS, Bradley IPet al., 2010, Use of microwaves for the detection of corrosion under insulation: A sensitivity study

Conference paper

Jones RE, Simonetti F, Lowe MJS, Bradley IPet al., 2010, USE OF MICROWAVES FOR THE DETECTION OF CORROSION UNDER INSULATION, 10th European Conference on Non-Destructive Testing (ECNDT 2010), Publisher: INT COMMITTEE NON-DESTRUCTIVE TESTING, Pages: 1346-1353

Conference paper

Jones RE, Simonetti F, Lowe MJS, Bradley IPet al., 2010, USE OF MICROWAVES FOR THE DETECTION OF CORROSION UNDER INSULATION, 36th Annual Review of Progress in Quantitative Nondestructive Evaluation, Publisher: AMER INST PHYSICS, Pages: 1373-+, ISSN: 0094-243X

Conference paper

Huthwaite P, Simonetti F, Lowe MJS, 2010, ON THE CONVERGENCE OF FINITE ELEMENT SCATTERING SIMULATIONS, 36th Annual Review of Progress in Quantitative Nondestructive Evaluation, Publisher: AMER INST PHYSICS, Pages: 65-72, ISSN: 0094-243X

Conference paper

Connolly GD, Lowe MJS, Rokhlin SI, Temple JAGet al., 2010, SYNTHETICALLY FOCUSED IMAGING TECHNIQUES IN SIMULATED AUSTENITIC STEEL WELDS USING AN ULTRASONIC PHASED ARRAY, 36th Annual Review of Progress in Quantitative Nondestructive Evaluation, Publisher: AMER INST PHYSICS, Pages: 871-+, ISSN: 0094-243X

Conference paper

Ma J, Cawley P, Lowe M, 2010, PULSE-ECHO REFLECTION OF THE SH0 GUIDED WAVE MODE FROM A PART-THICKNESS ELLIPTICAL DEFECT IN A PLATE, 36th Annual Review of Progress in Quantitative Nondestructive Evaluation, Publisher: AMER INST PHYSICS, Pages: 176-183, ISSN: 0094-243X

Conference paper

Fletcher S, Lowe M, Ratassepp M, Brett Cet al., 2010, DETECTION OF AXIAL CRACKS USING FOCUSED GUIDED WAVES, 36th Annual Review of Progress in Quantitative Nondestructive Evaluation, Publisher: AMER INST PHYSICS, Pages: 223-+, ISSN: 0094-243X

Conference paper

Rajagopal P, Skelton E, Lowe M, Craster Ret al., 2010, FINITE ELEMENT BASED HYBRID MODELS FOR ULTRASONIC NDE USING COMMERCIAL PACKAGES, 36th Annual Review of Progress in Quantitative Nondestructive Evaluation, Publisher: AMER INST PHYSICS, Pages: 662-+, ISSN: 0094-243X

Conference paper

Connolly GD, Lowe MJS, Temple JAG, Rokhlin SIet al., 2009, The application of Fermat's principle for imaging anisotropic and inhomogeneous media with application to austenitic steel weld inspection, PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, Vol: 465, Pages: 3401-3423, ISSN: 1364-5021

Journal article

Ratassepp M, Lowe MJS, 2009, SH <inf>0</inf> guided wave interaction with a crack aligned in the propagation direction in a plate, Pages: 161-168, ISSN: 0094-243X

Ultrasonic guided waves are currently of interest for structural health monitoring of large structures such as storage tanks and pipelines. This study focuses on the scattering of the fundamental horizontal shear (SH 0) mode at a through-thickness notch or crack in a plate whose alignment is in the direction of the wave propagation. The reflection and diffraction of the wave at a crack are examined using 2D finite element simulations. It is shown that the main reflection is generated by Rayleigh-like surface waves created on the faces of the crack, which radiate energy back into the plate. The amplitudes of the reflected and diffracted signals are verified experimentally. © 2009 American Institute of Physics.

Conference paper

Fan Z, Lowe MJS, 2009, Elastic waves guided by a welded joint in a plate, Proc R Soc A, Vol: 465, Pages: 2053-2068

Journal article

Ledesma VMN, Baruch EP, Demma A, Lowe MJSet al., 2009, Guided Wave Testing of an Immersed Gas Pipeline, MATERIALS EVALUATION, Vol: 67, Pages: 102-115, ISSN: 0025-5327

Journal article

Connolly GD, Lowe MJS, Rokhlin SI, Temple JAGet al., 2009, IMAGING OF SIMPLE DEFECTS IN AUSTENITIC STEEL WELDS USING A SIMULATED ULTRASONIC ARRAY, 35th Annual Review of Progress in Quantitative Nondestructive Evaluation, Publisher: AMER INST PHYSICS, Pages: 880-+, ISSN: 0094-243X

Conference paper

Connolly GD, Lowe MJS, Rokhlin SI, Temple JAGet al., 2009, Imaging of defects within austenitic steel welds using an ultrasonic array, 5th Meeting of the Anglo-French-Research-Group, Publisher: SPRINGER-VERLAG BERLIN, Pages: 25-38, ISSN: 0930-8989

Conference paper

Fan Z, Lowe MJS, 2009, PROPAGATION OF FEATURE GUIDED WAVES IN A PLATE WITH A WELDED JOINT, 35th Annual Review of Progress in Quantitative Nondestructive Evaluation, Publisher: AMER INST PHYSICS, Pages: 185-192, ISSN: 0094-243X

Conference paper

Rajagopal P, Drozdz M, Lowe MJS, 2009, TOWARDS IMPROVED FINITE ELEMENT MODELLING OF THE INTERACTION OF ELASTIC WAVES WITH COMPLEX DEFECT GEOMETRIES, 35th Annual Review of Progress in Quantitative Nondestructive Evaluation, Publisher: AMER INST PHYSICS, Pages: 49-56, ISSN: 0094-243X

Conference paper

Cicero T, Cawley P, Lowe M, Simonetti Fet al., 2009, EFFECTS OF LIQUID LOADING AND CHANGE OF PROPERTIES OF ADHESIVE JOINTS ON SUBTRACTION TECHNIQUES FOR STRUCTURAL HEALTH MONITORING, 35th Annual Review of Progress in Quantitative Nondestructive Evaluation, Publisher: AMER INST PHYSICS, Pages: 1006-1013, ISSN: 0094-243X

Conference paper

Ratassepp M, Lowe MJS, Cawley P, Klauson Aet al., 2008, Scattering of the fundamental shear horizontal mode in a plate when incident at a through crack aligned in the propagation direction of the mode, JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, Vol: 124, Pages: 2873-2882, ISSN: 0001-4966

Journal article

Rajagopal P, Lowe MJS, 2008, Scattering of the fundamental shear horizontal guided wave by a part-thickness crack in an isotropic plate, JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, Vol: 124, Pages: 2895-2904, ISSN: 0001-4966

Journal article

Fan Z, Lowe MJS, Castaings M, Bacon Cet al., 2008, Torsional waves propagation along a waveguide of arbitrary cross section immersed in a perfect fluid, JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, Vol: 124, Pages: 2002-2010, ISSN: 0001-4966

Journal article

Rajagopal P, Lowe MJS, 2008, Angular influence on the scattering of fundamental shear horizontal guided waves by a through-thickness crack in an isotropic plate, JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, Vol: 124, Pages: 2021-2030, ISSN: 0001-4966

Journal article

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