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Dr Liam Marsh
MEng (Hons), PhD, CEng, MIET, MIEEE, AFHEA

 

2016-17 WCSIM Beloe Fellow

 

 

 

 

 

 

Contact Details:

 

Postal Address:

 

1.318 Photon Science Institute
Alan Turing Building

School of Electrical and Electronic Engineering

The University of Manchester
Oxford Road, Manchester
M13 9PL, UK

Telephone:

+44 1613064808            (external)

Ext. 64808                          (internal)

E-mail:

 

liam.marsh@manchester.ac.uk

 

 

 

 

 

 

 

Role:

 

Research Associate

 

Institution:

 

The University of Manchester

 

Department:

 

School of Electrical and  Electronic Engineering,
Faculty of Engineering and Physical Sciences

 

Research Group:

 

Sensing, Imaging and Signal Processing (SISP)

 

 

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Background:

 

 

 

Liam gained a first class MEng degree (with honours) in Electrical Engineering and Electronics from the University of Manchester, Institute of Science and Technology (UMIST) in 2007. During this period he undertook two projects in the Sensing, Imaging and Signal Processing (SISP) group, one at BEng and one at MEng level, under the supervision of Professor Hugh McCann and Professor Anthony Peyton respectively. He studied for his PhD ‘Electromagnetic Tomography and People Screening’ at the University of Manchester (following the merger of UMIST and The Victoria University of Manchester). Upon the completion of his PhD in 2011 he took up the post of ‘Research Associate’ at the University of Manchester.

Liam’s research includes many aspects of metal detection and characterisation, magnetic induction spectroscopy/tomography, signal processing, remote sensing and security. In the past he has also worked in bio-impedance, an area in which he maintains an active interest. In the course of his research career Liam has delivered invited talks on future security screening technologies, the use of technology to find hidden landmines, and metal characterisation, the latter of which was delivered as the keynote speech at the 2015 IEEE Sensors Applications Symposium in Zadar, Croatia. In recent years his research has focussed on the detection and characterisation of landmines, and explosive remnants of warfare (ERW). Liam currently works both at the newly-established £5.5 million Centre for International Research for the Clearance of Landmines and Explosives (CIRCLE), and on other projects associated with metal detection and characterisation.

In 2014 Liam was awarded Chartered Engineer (CEng) status through the Institute of Engineering and Technology.

Liam undertook a year-long part-time higher education (HE) teaching course ‘Teaching for Researchers’ in 2015. Upon successful completion of this course, and following an evaluation of HE teaching experience and practices Liam was awarded Associate Fellowship of The Higher Education Authority (AFHEA) in April 2016.

In 2017 Liam was awarded the Beloe Fellowship by the Worshipful Company of Scientific Instrument Makers (WCSIM).

Liam designs and undertakes outreach activities on behalf of the School of Electrical and Electronic Engineering. These take the form of school visits, UCAS open days and ‘Experience Engineering’ days for prospective undergraduates. One of his activities, the Cheap Arduino Metal Detector (CHARMED) which was co-designed with a colleague, has become one of the main outreach activities offered by the School. CHARMED provides a useful educational resource for ages 14+, containing elements of basic electro-mechanical assembly, coding, electromagnetism and signal processing, each of which can be amended according to age group and ability. This activity has recently been featured by the Faculty of Science and Engineering at the University (https://youtu.be/t-n6CRYnKAM).

Liam is also a member of the Institute of Engineering and Technology and the Institute of Electrical and Electronics Engineers.

 

 

 

Past and Present Research Projects:

 

SEMIS (Scanning, Electromagnetic Mine Identification System)

 

This project, funded by Cheshire-based charity 'Find A Better Way', seeks to revolutionise the field of humanitarian de-mining. The charity aims to develop scanning technologies using multiple modalities to interrogate the huge variety of terrain types that de-miners face. The SEMIS project concerns the implementation of an inductive metal detection system, which is capable of the detection of minimum-metal content anti-personnel mines, and is able to discriminate between mines and innocuous ground clutter.

 

 

SHREDDERSORT

 

The EU-funded project ‘SHREDDERSORT’, seeks to develop novel methods allowing for the automated sorting of non-ferrous materials for the scrap metal sector.

 

 

FRUITGRADING

 

This project concerns the contactless inspection of fruit in order to determine fruit quality and maturity state. It is a European Union funded project and is operated under the title ‘FRUITGRADING’. Liam’s was involved in the part of the project which required the development of a magnetic induction spectroscopy (MIS)-based system capable of evaluating specific properties of the fruit in order to establish a correlation with both the fruit quality and ripeness.

 

 

 

QMEAT

 

This research involved the contactless inspection of meat samples in order to classify samples of pig meat. The research was European Union funded and operated under the title ‘QMEAT’.

 

 

Invited Talks

 

“Landmines – Using technology to help us to find hidden dangers”
First presented in March 2017 to British Science Association Scientific Journalism Contest participants. Manchester, UK.

 

“Estimation of Location and Magnetic Polarisability Tensor of Metallic Targets for Security and Landmine Clearance Applications”
First presented in April 2015 as a keynote speech at the 2015 IEEE Sensors Applications Symposium in Zadar, Croatia.

 

“Future Walkthrough Metal Detectors”
First presented in April 2012 to the Sensing, Imaging and Signal Processing Group at the University of Manchester, UK.

 

 

 

Selected Publications:

 

 

M. D. O'Toole, J. L. Davidson, L. A. Marsh, W. Yin, & A. J. Peyton, “Evaluation of the thin-skin approximation boundary element method for electromagnetic induction scattering problems”, IEEE Sensors Applications Symposium 2016, Catania, Italy, 2016

 

L. A. Marsh, J. L. Davidson, M. D. O’Toole, A. J. Peyton, D. Ambruš, D. Vasić and V. Bilas, “Spectroscopic identification of anti-personnel mine surrogates from planar sensor measurements”, IEEE Sensors 2016, Orlando, USA, 2016

 

O. A. Abdel-Rehim, J. L. Davidson, L. A. Marsh, M. D. O’Toole and A. J. Peyton, “Magnetic Polarizability Tensor Spectroscopy for Low Metal Anti-personnel Mine Surrogates”, IEEE Sensors J. PP (2016) (10pp), 2016

 

D. Ambruš, D. Vasić, V. Bilas, L. A. Marsh, J. L. Davidson and A. J. Peyton, “Embedding target discrimination capabilities into commercial handheld metal detectors”, International Symposium on Humanitarian Demining, Biograd, Croatia, 2016

 

B. Dekdouk, C. Ktistis, L. A. Marsh, D. W. Armitage and A. J. Peyton, “Towards metal detection and identification for humanitarian demining using magnetic polarisability tensor spectroscopy”, Meas. Sci. Technol. 26 (2015) 115501 (17pp), 2015

 

J. Makkonen, L. A. Marsh, J. Vihonen, A. Järvi, D. W. Armitage, A. Visa and A. J. Peyton “Improving reliability for classification of metallic objects using a WTMD portal”, Meas. Sci. Technol. 26 (2015) 105103 (11pp), 2015

 

L. A. Marsh, O. A. Abdel-Rehim, Y. M. Tan, M. D. O’Toole, D. W. Armitage and A. J. Peyton,

“Design of Electromagnetic Sensor Arrays Optimised for Inversion of the Magnetic Polarisability Tensor”, IEEE Sensors Applications Symposium 2015, Zadar, Croatia, April 2015

 

J. Makkonen, L. A. Marsh, J. Vihonen, M. D. O’Toole, D. W. Armitage, A. Järvi, A. J. Peyton and A. Visa, “Determination of Material and Geometric Properties of Metallic Objects using the Magnetic Polarisability Tensor”, IEEE Sensors Applications Symposium 2015, Zadar, Croatia, April 2015

 

M. D. O’Toole, L. A. Marsh, J. L. Davidson, Y. M. Tan, D. W. Armitage and A. J. Peyton, “Rapid Non-Contact Relative Permittivity Measurement of Fruits and Vegetables using Magnetic Induction Spectroscopy”, IEEE Sensors Applications Symposium 2015, Zadar, Croatia, April 2015

 

O. A. Abdel-Rehim, J. L. Davidson, L. A. Marsh, M. D. O’Toole, D. W. Armitage
and A. J. Peyton, “Measurement System for Determining the Magnetic Polarisability Tensor of Small Metal Targets”, IEEE Sensors Applications Symposium 2015, Zadar, Croatia, April 2015

 

M. D. O’Toole, L. A. Marsh, J. L. Davidson, Y. M. Tan, D. W. Armitage and A. J. Peyton,
“Non-contact multi-frequency magnetic induction spectroscopy system for industrial-scale bio-impedance measurement”, Meas. Sci. Technol. 26 (2015) 035102 (17pp), 2015

 

L. A. Marsh, C. Ktistis, A. Järvi, D. W. Armitage and A. J. Peyton, “Determination of the magnetic polarisability tensor and three dimensional object location for multiple objects using a walk-through metal detector”, Meas. Sci. Technol. 25 (2014) 055107 (12pp), 2014

 

J. Makkonen, L. A. Marsh, J. Vihonen, A. Järvi, D.W. Armitage, A. Visa and A. J. Peyton
“KNN classification of metallic targets using the magnetic polarisability tensor”,
Meas. Sci. Technol. 25 (2014) 055105 (9pp), 2014

 

B. Dekdouk, L. Marsh, D. Armitage, and A.Peyton, “Estimating Magnetic Polarizability Tensor of Buried Metallic Targets for Land Mine Clearance” 2014 Springer New York, pp. 425-432. Available at: http://dx.doi.org/10.1007/978-1-4614-9500-0_38

 

L. A. Marsh, J. Makkonen, J. Vihonen, A. Visa, A. Järvi, D.W. Armitage and A. J. Peyton, “Investigation of the significance of the ‘body effect’ on sensitivity to metallic objects in a walk-through metal detector”, IOP Sensors & their Applications XVII, Dubrovnik, Croatia, September 2013.

 

J. Makkonen, L. A. Marsh, J. Vihonen, A. Visa, A. Järvi and A. J. Peyton, “Classification of metallic targets using a single frequency component of the magnetic polarisability tensor”, IOP Sensors & their Applications XVII, Dubrovnik, Croatia, September 2013.

 

S. Bureau, D. Bertrand, B. Jallais, P. Reling, B. Gouble, C. M. G. C. Renard, B. Dekdouk,
L. A. Marsh, M. D. O’Toole, D. W. Armitage, A. J. Peyton and J. Alvarez-Garcia, “FRUITGRADING: Development of a fruit sorting technology based on internal quality parameters”, 16th International Conference on Near Infrared Spectroscopy, Montpellier, France, 2013

 

L. A. Marsh, C. Ktistis, A. Järvi, D. W. Armitage and A. J. Peyton, “Three-dimensional object location and inversion of the magnetic polarisability tensor at a single frequency using a walk-through metal detector”, Meas. Sci. Technol. 24 (2013) 045102 (13pp), 2013

 

A. J. Peyton, D. W. Armitage, L. A. Marsh, C. Ktistis, W. R. B. Lionheart and
A. Järvi, “Walk Through Metal Detection System”, US Patent
20,130,006,552, 2013

 

B. Dekdouk, C. Ktistis, L. A. Marsh, D. W. Armitage and A. J. Peyton, “Method for determining magnetic polarisability tensor for identifying obscured threat metallic targets”, European Electromagnetics (EUROEM), Toulouse, France, 2012

 

L. A. Marsh, C. Ktistis, A. Järvi, D.W. Armitage and A. J. Peyton, “Inversion of the magnetic polarisability tensor at a single frequency from walk-through metal detector measurements”, Proceedings of the 6th International Symposium on Process Tomorgraphy, Cape Town, SA, 2012

 

L. A. Marsh, D. W. Armitage and A. J. Peyton, “Future Walkthrough Metal Detectors”, Proceedings of the 2009 University of Manchester Postgraduate Research Conference, Manchester, UK, 2009