Eddy current examination of carbon fibres in carbon-epoxy composites and Kevlar. (14th November 2006)

• Record Type: Journal Article
• Authors: Grimberg, R.; Savin, A.; Steigmann, R.; Bruma, A.
• Is Part Of: International journal of material & product technology. Volume 27:Number 3/4(2006)
• Page Start: 221
• Page End: 228
• Publication Date: 2006-11-14
• Subjects: carbon epoxy composites -- carbon fibres -- eddy current examination -- eddy current holography -- eddy current microscopy -- non-destructive testing -- NDT -- bullet impact -- bullet-proof jackets -- Kevlar body armour -- bullet-proof vests; Manufacturing processes -- Periodicals; Materials -- Testing -- Periodicals; 620.11
• Languages: English
• ISSNs: 0268-1900

Abstract

This paper proposes a method for eddy current non-destructive examination of carbon fibres from carbon epoxy composites as well as the regions impacted with bullets from Kevlar textures. In this aim, an eddy current focused micro sensor, send-receiver type with orthogonal coils was developed. The obtained data were post processed using an incoherent holographic technique. By a small modification of lift-off, the successive layers of fibres can be visualised and, implicitly, their integrity. Using a similar method, the boundaries of the region impacted by a bullet from Kevlar textures were completely emphasised.