Nondestructive characterization of prepreg ageing using nuclear magnetic resonance techniques
- Fraunhofer Institute for Nondestructive Testing, Saarbruecken (Germany, F.R.)
Initial results are presented on the application of NMR techniques to prepregs in order to characterize the crosslink state under exposure to room and elevated (50 C) temperature. The experiments were conducted with a MSL-400 Bruker NMR spectrometer and microimaging system which works at 400 MHz. Aside from the sensitive measurement of the cross-link density there is also the potential to separate the influence of moisture content as a further parameter contributing to the aging process. It is shown that these experimental results correlate with results of destructive tests and document the potential of NMR as a NDT tool. An NMR-image of the moisture distribution in a glassfiber reinforced expoxy resin sample is shown. 17 refs.
- OSTI ID:
- 6169506
- Journal Information:
- Research in Nondestructive Evaluation; (USA), Vol. 2:3; ISSN 0934-9847
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
NONDESTRUCTIVE TESTING
NUCLEAR MAGNETIC RESONANCE
REINFORCED PLASTICS
AGING
CARBON FIBERS
CROSS-LINKING
GLASS
MECHANICAL PROPERTIES
CHEMICAL REACTIONS
FIBERS
MAGNETIC RESONANCE
MATERIALS
MATERIALS TESTING
PETROCHEMICALS
PETROLEUM PRODUCTS
PLASTICS
POLYMERIZATION
REINFORCED MATERIALS
RESONANCE
SYNTHETIC MATERIALS
TESTING
420500* - Engineering- Materials Testing