Eddy Current Sensor Arrays for Stress and Damage Mapping
Lead Research Organisation:
Newcastle University
Department Name: Electrical, Electronic & Computer Eng
Abstract
While eddy current methods are widely used in industry for crack location, very little work has been undertaken in the UK to exploit their potential as a cheap and portable way of sensing stress. Due to the complex nature of electromagnetic interactions with matter, eddy current signals are difficult to interpret and it is currently not possible to unambiguously separate their sensitivities to stress, microstructure and defects. Meeting this challenge requires a multidisciplinary approach; bringing together instrumentation, signal processing with materials science. The 2 teams are well placed to develop the necessary hardware and to begin to establish approximate relationships between the eddy current signature, residual stress, defects, surface geometry and microstructure. This understanding will help us to develop low cost, non destructive eddy current methods for residual stress, active defect detection, and provide guidance for structural integrity engineers regarding the assessment of defects under residual stress loading. To this end we will develop a set of reference samples with quantified levels of stress and damage upon which the techniques will be validated and refined. We will develop and evaluate stress/microstructure/defect imaging from near the surface up to 20mm depth using novel pulsed eddy current sensor arrays along with advanced signal analysis, particularly up to 200 micrometer depth stress distribution of near surface. Huddersfield will design and develop the pulsed eddy current sensors while Manchester has the necessary materials knowledge and complementary stress and damage measurement techniques to validate and evaluate the success of different sensor designs and signal analysis procedures. While the development of a general unambiguous tool for simultaneous stress and damage measurement is some way off, we hope to scope the range of sensitivity of portable prototype eddy current capability to provide cheap, non destructive information about stress and damage levels in specific cases.
Publications
Arcadius Tokognon C
(2017)
Structural Health Monitoring Framework Based on Internet of Things: A Survey
in IEEE Internet of Things Journal
Bai L
(2013)
Spatial and Time Patterns Extraction of Eddy Current Pulsed Thermography Using Blind Source Separation
in IEEE Sensors Journal
Bai L
(2013)
A comparative study of principal component analysis and independent component analysis in eddy current pulsed thermography data processing.
in The Review of scientific instruments
Bai L
(2014)
Reducing the Effect of Surface Emissivity Variation in Eddy Current Pulsed Thermography
in IEEE Sensors Journal
Cumanan K
(2014)
Secrecy Rate Optimizations for a MIMO Secrecy Channel With a Multiple-Antenna Eavesdropper
in IEEE Transactions on Vehicular Technology
Ding S
(2017)
Analysis of domain wall dynamics based on skewness of magnetic Barkhausen noise for applied stress determination
in Journal of Magnetism and Magnetic Materials
Gao B
(2014)
Smooth Nonnegative Matrix Factorization for Defect Detection Using Microwave Nondestructive Testing and Evaluation
in IEEE Transactions on Instrumentation and Measurement
Gao B
(2014)
Automatic Defect Identification of Eddy Current Pulsed Thermography Using Single Channel Blind Source Separation
in IEEE Transactions on Instrumentation and Measurement
Gao B
(2017)
Quantitative validation of Eddy current stimulated thermal features on surface crack
in NDT & E International
Gao S
(2016)
High-Performance Wireless Piezoelectric Sensor Network for Distributed Structural Health Monitoring
in International Journal of Distributed Sensor Networks
Description | Eddy current sensing arrays have been applied for defect and stress mapping. Natural RCF cracks can be detected by eddy current pulsed thermography. The resolution and location are impressive. The detectability and limitation have been identified. Further research is proposed. |
Exploitation Route | Eddy Current pulsed thermography has been explored for better sensing and imaging. New RFID sensor network is investigated. More multiphysics sensing and monitoring should be investigated |
Sectors | Aerospace, Defence and Marine,Construction,Electronics,Energy,Environment,Manufacturing, including Industrial Biotechology,Transport,Other |
Description | One new KTP with GE PII have been awarded. Pulsed eddy current arrays will be replace by eddy current pulsed thermography for further investigated. Several new PhD students and international scholars have been attracted for the studies. |
Sector | Aerospace, Defence and Marine,Energy,Environment,Manufacturing, including Industrial Biotechology,Transport,Other |
Impact Types | Societal,Economic |
Description | Chinese Scholarship Council |
Amount | £10,000 (GBP) |
Funding ID | Yunze He |
Organisation | University of Leeds |
Department | China Scholarship Council |
Sector | Academic/University |
Country | United Kingdom |
Start | 02/2011 |
End | 02/2012 |
Description | Chinese Scholarship Council |
Amount | £100,000 (GBP) |
Funding ID | Yunze He |
Organisation | University of Leeds |
Department | China Scholarship Council |
Sector | Academic/University |
Country | United Kingdom |
Start | 03/2011 |
End | 02/2015 |
Description | Commission of the European Communities |
Amount | £425,000 (GBP) |
Funding ID | CONHEALTH 2576737 |
Organisation | European Commission |
Sector | Public |
Country | European Union (EU) |
Start | 04/2012 |
End | 04/2016 |
Description | Commission of the European Communities |
Amount | £225,000 (GBP) |
Funding ID | HEMOW 269202 |
Organisation | European Commission |
Sector | Public |
Country | European Union (EU) |
Start | 04/2011 |
End | 03/2015 |
Description | EMAT based Pipeline integrity |
Amount | £62,000 (GBP) |
Organisation | Innovate UK |
Sector | Public |
Country | United Kingdom |
Start | 09/2016 |
End | 03/2017 |
Description | Game changer Proposal and Poster |
Amount | £5,000 (GBP) |
Organisation | National Nuclear Laboratory |
Sector | Public |
Country | United Kingdom |
Start | 10/2016 |
End | 03/2017 |
Description | NDTonAIR: Training Network in Non-Destructive Testing and Structural Health Monitoring of Aircraft structures |
Amount | £189,034 (GBP) |
Funding ID | 722134 |
Organisation | European Commission |
Sector | Public |
Country | European Union (EU) |
Start | 05/2017 |
End | 04/2020 |
Description | Pulsed Eddy Current for Pipeline Integrity |
Amount | £60,000 (GBP) |
Organisation | Radix 2 Design |
Sector | Private |
Country | United Kingdom |
Start | 09/2016 |
End | 06/2017 |
Description | Royal Society |
Amount | £50,000 (GBP) |
Organisation | Royal Academy of Engineering |
Sector | Charity/Non Profit |
Country | United Kingdom |
Start | 03/2011 |
End | 02/2012 |
Description | Rolls-Royce plc |
Organisation | Rolls Royce Group Plc |
Country | United Kingdom |
Sector | Private |
Start Year | 2008 |