Zerstörungsfreie Charakterisierung von Klebstoffen und Klebstoffverbindungen mit "Nuclear Magnetic Resonance" Methoden.
Nondestructive characterization of adhesive bonds with nuclear magnetic resonance methods
For application of adhesives and adhesively bonded structures, pulsed NMR has been used to measure absorbed moisture and to distinguish different binding states of moisture, studying the curing process and determine the degree of curing under differnt curing conditions and determine aging and environmental degradation. Comparisons of NMR measurement parameters with the results of destructive tests (impact resistance tests on bulk adhesives and lap shear tests on film adhesives) are discussed. A one-sided system was used to demonstrate the practical applicability of NMR to nondestructive inspection problems on adhesives. This novel type of NMR system allow localized measurements to be made from a single surface in order to scan bond lines between adherends.