Imperial College London
Portrait Picture

ProfessorPeterCawley

Faculty of Engineering, Department of Mechanical Engineering

Professor of Mechanical Engineering
 
 
 
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Contact

 

+44 (0)20 7594 7069p.cawley CV

 
 
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Assistant

 

Ms Nina Hancock +44 (0)20 7594 7068

 
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Location

 

568City and Guilds BuildingSouth Kensington Campus

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Summary

 

Publications

Publication Type
Year
to

520 results found

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

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

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

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

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

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

Journal article

Escobar-Ruiz E, Cawley P, Nagy P, Collison I, Wright Det al., 2012, Ultrasonic NDE of titanium diffusion bonds using signal phase, Pages: 187-195

Diffusion bonding is a highly advantageous solid-state welding method. However, its full exploitation in titanium components is currently limited by a lack of robust NDE techniques capable of detecting anything but gross bond-line defects. A novel ultrasonic technique has been developed to address this lack of capability. This technique, based on the ultrasonic signal phase, has been demonstrated in a 'single-sided' scenario where only one side of the diffusion bond was accessible. Samples with differing degrees of bond quality were evaluated, and excellent agreement was found between the single-sided and double-sided experiments. (2012) by the British Institute of Non-Destructive Testing. All rights reserved.

Conference paper

Brierley N, Tippetts T, Cawley P, 2012, Data processing to improve the reliability of automated non-destructive inspection, Pages: 119-128

In industrial NDE it is increasingly common for data acquisition to be automated, driving a recent multiple increase in the availability of data. The data analysis remains a mostly manual task, performed by a skilled operator - a rather painstaking task given that most of the data contain no indications. Partial automation, using software to prioritise regions of interest, could simultaneously increase inspection reliability and decrease data analysis time, by optimising the use of the operator's time. The project output is a software system general enough to fit a wide array of NDE applications. Nonetheless, the work so far has focused on two specific examples of automatic NDE: the ultrasonic inspection of power station rotor bores and the ultrasonic immersion inspection of aerospace titanium turbine discs. The paper will outline the key stages of the data processing scheme and show recent results from the program. (2012) by the British Institute of Non-Destructive Testing. All rights reserved.

Conference paper

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

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

Journal article

Galvagni A, Cawley P, 2012, GUIDED WAVE PERMANENTLY INSTALLED PIPELINE MONITORING SYSTEM, 38th Annual Review of Progress in Quantitative Nondestructive Evaluation (QNDE), Publisher: AMER INST PHYSICS, Pages: 1591-1598, 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

Cawley P, 2012, BRUCE THOMPSON - INTERNATIONAL LEADER, 38th Annual Review of Progress in Quantitative Nondestructive Evaluation (QNDE), Publisher: AMER INST PHYSICS, Pages: 99-100, 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

Carandente R, Cawley P, 2012, A METHOD TO ESTIMATE THE SIZE OF CORROSION PATCHES WITH GUIDED WAVES IN PIPES, 38th Annual Review of Progress in Quantitative Nondestructive Evaluation (QNDE), Publisher: AMER INST PHYSICS, Pages: 1929-1936, ISSN: 0094-243X

Conference paper

Davies CM, Nagy P, Narayanan A, Cawley Pet 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-+

Conference paper

Prajapati S, Nagy PB, Cawley P, 2012, POTENTIAL DROP DETECTION OF CREEP DAMAGE IN THE VICINITY OF WELDS, 38th Annual Review of Progress in Quantitative Nondestructive Evaluation (QNDE), Publisher: AMER INST PHYSICS, Pages: 417-424, ISSN: 0094-243X

Conference paper

Brierley N, Tippetts T, Cawley P, 2012, IMPROVING THE RELIABILITY OF AUTOMATED NON-DESTRUCTIVE INSPECTION, 38th Annual Review of Progress in Quantitative Nondestructive Evaluation (QNDE), Publisher: AMER INST PHYSICS, Pages: 1824-1831, ISSN: 0094-243X

Conference paper

Galvagni A, Cawley P, 2012, A Permanently Installed Guided Wave System for Pipe Monitoring, Conference on Health Monitoring of Structural and Biological Systems, Publisher: SPIE-INT SOC OPTICAL ENGINEERING, ISSN: 0277-786X

Conference paper

Ptaszek G, Cawley P, Almond D, Pickering Set al., 2012, ARTIFICIAL DISBONDS FOR CALIBRATION OF TRANSIENT THERMOGRAPHY INSPECTION OF THERMAL BARRIER COATING SYSTEMS, 38th Annual Review of Progress in Quantitative Nondestructive Evaluation (QNDE), Publisher: AMER INST PHYSICS, Pages: 491-498, ISSN: 0094-243X

Conference paper

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

Milne K, Cawley P, Nagy PB, Wright DC, Dunhill Aet al., 2011, Ultrasonic Non-destructive Evaluation of Titanium Diffusion Bonds, JOURNAL OF NONDESTRUCTIVE EVALUATION, Vol: 30, Pages: 225-236, ISSN: 0195-9298

Journal article

Lovstad A, Cawley P, 2011, The reflection of the fundamental torsional guided wave from multiple circular holes in pipes, NDT & E INTERNATIONAL, Vol: 44, Pages: 553-562, ISSN: 0963-8695

Journal article

Clarke T, Cawley P, 2011, Enhancing the defect localization capability of a guided wave SHM system applied to a complex structure, STRUCTURAL HEALTH MONITORING-AN INTERNATIONAL JOURNAL, Vol: 10, Pages: 247-259, ISSN: 1475-9217

Journal article

Galvagni A, Cawley P, 2011, The reflection of guided waves from simple supports in pipes, JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, Vol: 129, Pages: 1869-1880, ISSN: 0001-4966

Journal article

Ptaszek G, Cawley P, Almond D, Pickering Set al., 2011, Artificial disbonds for calibration of transient thermography inspection of thermal barrier coating systems

Transient thermography is commonly used for the detection of disbonds in thermal barrier coatings (TBC). As for other NDT techniques, reference test specimens are required for calibration, but unfortunately, real disbonds are very difficult to use because it is difficult to control their size, and larger ones tend to spall. Flat bottomed holes are commonly used, but these over-estimate the thermal contrast obtained for a defect of a given diameter. This paper quantifies the differences in thermal response using finite element analysis validated by experiments, and proposes a form of artificial disbond that gives a better representation of the thermal responses seen with real defects. Real disbonds tend to have a non-uniform gap between the disbonded surfaces across the defect, and the effect of this on the thermal response is evaluated using finite element simulations. It is shown that the effect can be compensated for by adjusting the diameter of the calibration defect compared to the real defect. © (2011) by the British Institute of Non-Destructive Testing. All rights reserved.

Conference paper

Galvagni A, Cawley P, 2011, Guided wave permanently installed pipeline monitoring system

Ultrasonic guided waves are routinely used to inspect pipes. The advantage of this technique is that it enables a fully-volumetric screening of several metres of pipe from a single transducer location, resulting in substantial time and cost savings. However, it suffers from limitations such as relatively low damage sensitivity and difficulties in dealing with intricate pipe networks; furthermore, for a pipe that is buried, submerged or at height it may still prove difficult and expensive to routinely gain access to even a single location. The use of permanently attached sensors can overcome these limitations since access needs to be obtained only once during installation and they enable the use of baseline subtraction, so that any reading from a sensor can be compared to previous readings thereby allowing tracking and trending of signal changes. This paper discusses the advantages of baseline subtraction in the context of guided wave pipeline inspection as well as methods to address the unique challenges that this application presents in terms of compensating for signal changes due to effects other than the growth of damage. It is shown that the use of baseline subtraction allows significant damage sensitivity improvements, particularly in the vicinity of large. © (2011) by the British Institute of Non-Destructive Testing. All rights reserved.

Conference paper

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 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

Long R, Cawley P, Russell J, 2011, VARIABLE SPLIT APERTURE PROCESSING OF FULL MATRIX CAPTURE PHASED ARRAY DATA, 37th Annual Review of Progress in Quantitative Nondestructive Evaluation (QNDE), Publisher: AMER INST PHYSICS, Pages: 819-826, ISSN: 0094-243X

Conference paper

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