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Pickering, Simon G.
University of Bath
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (11/11 displayed)
- 2017Distance Estimation by Fusing Radar and Monocular Camera with Kalman Filter
- 2017Nonlinear imaging of damage in composite structures using sparse ultrasonic sensor arrayscitations
- 2014Nonlinear damage detection in composite structures using bispectral analysiscitations
- 2014Analysis of the delamination detection capabilities of pulse stimulated thermographic nondestructive testing techniques
- 2014Failure analysis of impact-damaged/hygrothermally aged fiber-reinforced polymer matrix composite joints subjected to bend loading
- 2014Analysis of the defect detection capabilities of pulse stimulated thermographic NDE techniquescitations
- 2013Transient thermography testing of unpainted thermal barrier coating (TBC) systemscitations
- 2013LED optical excitation for the long pulse and lock-in thermographic techniquescitations
- 2012Damage assessment of impact damages on CFRP with laser shearography
- 2011A comparison of the pulsed, lock-in and frequency modulated thermography nondestructive evaluation techniquescitations
- 2010Comparison of the defect detection capabilities of flash thermography and vibration excitation shearographycitations
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article
LED optical excitation for the long pulse and lock-in thermographic techniques
Abstract
High power light emitting diode (LED) arrays have been investigated as excitation sources for long pulse and lock-in thermography. Images of artificial defects in a carbon fibre reinforced plastic (CFRP) composite sample are compared, by image contrast signal-to-noise ratio estimates, with those obtained using conventional incandescent flash and lock-in excitation sources. The LED arrays had to be mounted on heat sinks with active cooling in to prevent them exceeding their thermal tolerance. Despite this cooling the LED arrays were still found to emit some IR radiation, although far less than conventional incandescent light sources.