Browsing by Author "Pickwell, A. J."

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    Design and development of micro-electromechanical acoustic emission sensors
    (Cranfield University, 2012-01) Pickwell, A. J.; Dorey, Robert A.; Mba, David
    Non-Destructive Testing (NDT) is a vital technique in modern engi- neering, enabling the monitoring of the structural health of a com- ponent and therefore enabling the prediction of component failure. Once the structural health of a component is known, timely main- tenance can be carried out to prevent component failure which may have resulted in costly downtime or injury. One NDT technique which has been of increasing interest over recent years is Acoustic Emission (AE) monitoring. AE monitoring technology has been successfully combined with preventative maintenance, saving millions of pounds worldwide. Cont/d.
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    ItemOpen Access
    Thick film, acoustic emission sensors for embedded structural health monitoring systems
    (2010-07-02T00:00:00Z) Pickwell, A. J.; Dorey, Robert A.; Mba, David
    Structural heath monitoring of engineering structures is of growing interest due to increasedcomplexity of such structures and the ability to schedule maintenance when it is needed thuspreventing unnecessary work or preventing failure. One such method for monitoring the structuralhealth of large scale structures is through the detection of Acoustic Emissions (AE). A novel thickfilm Acoustic Emission sensor is presented. Piezoelectric thick film AE sensors were fabricated bycreating and pattering lead zirconate titanate (PZT) thick films using a powder/sol composite inkdeposition technique in conjunction with mechanical patterning of the subsequent films. The resultantAE sensors exhibit a response comparable to commercially available AE sensors. Comparative resultsbetween the thick film and commercial sensors will be reviewed and discussed.