Eddy current testing of composite pressure vessels

Article type: Research Article

Authors: Pelkner, Matthias^a; | Casperson, Ralf^a | Pohl, Rainer^a | Munzke, Dorit^a | Becker, Ben^a

Affiliations: [a] Bundesantsalt für Materialforschung und –prüfung BAM, Berlin, Germany

Correspondence: [*] Corresponding author: Matthias Pelkner, Bundesanstalt für Materialforschung und -prüfung, Unter den Eichen 87, 12205 Berlin, Germany. Tel.: +49 30 81044120. E-mail: matthias.pelkner@bam.de

Abstract: The application of composite pressure vessels is of great interest due to tremendous weight saving. Nevertheless, ageing of CFRP (carbon fiber reinforced plastic) composites pressure vessels underlies complex interactions between metallic liner and composite and is not fully understood yet. One main challenge is the application of appropriate testing methods for detecting the influences of pressure cycles and creep behavior on the material. This contribution presents results achieved by using conventional eddy current testing (ET) and high frequency ET. Here, we could show that also conventional ET with low frequencies are useable to investigate pressure vessels of different material combinations like aluminum-CFRP and synthetics-CFRP.

Keywords: CFRP, eddy current, ageing, composite, pressure vessel

DOI: 10.3233/JAE-171044

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 59, no. 4, pp. 1221-1226, 2019