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Laser Bond Inspection of Composite Material

The use of controlled, laser produced localized stress waves in materials and bonded joints offers new opportunities for the characterization of structures. The method called laser bond inspection (LBI) can be applied nondestructively to strong bonds but will fail a nominal bond, creating an internal disbond detectable by the LBI system itself. To date, numerous tests have shown the method to be sensitive to weak bonds in carbon fiber reinforced polymer composite structural bonds created by poor adhesive mixing, improper surface preparation or contamination.

1. Bossi, R., K. Housen, C. Walters and D. Sokol, “Laser Bond Testing,” Materials Evaluation, Vol. 67, No. 7, pp. 819-827, 2009. 2. Bossi, R, David Lahrman, David Sokol and Craig Walters, “Laser Bond Inspection for Adhesive Bond Strength,” Proceedings of SAMPE, Long Beach, CA, 2011. 3. Bossi, R., K. Housen and W. Shepherd, “Using Shock Loads to Measure Bonded Joint Strength,” Materials Evaluation, 60, 11, pp. 1333-1338, 2002. 4. Bossi, R., K. Housen and W. Shepherd, “Application of Stress Waves to Bond Inspection,” Proceedings of SAMPE, Long Beach, CA, 2004.
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