Real-time inspection of polymer composites during consolidation

Elizabeth J. Linstrom; Susan C. Mantell

doi:10.1117/12.259185

15 November 1996 Real-time inspection of polymer composites during consolidation

Elizabeth J. Linstrom, Susan C. Mantell

Proceedings Volume 2948, Nondestructive Evaluation for Process Control in Manufacturing; (1996) https://doi.org/10.1117/12.259185
Event: Nondestructive Evaluation Techniques for Aging Infrastructure and Manufacturing, 1996, Scottsdale, AZ, United States

Abstract

The goal of this work was to design and implement a noncontact, nondestructive method for evaluating interlaminar bonding during in-situ consolidation of composites. A sensor which detects poorly bonding areas in the topmost ply was developed. This sensor consists of two piezoelectric transducers mounted in a 'pitch-catch' arrangement. Plate waves and Rayleigh surface waves were generated by orienting the pitch transducer at an angle. Received signals were analyzed for frequency shift, frequency filtering, attenuation and wave speed to develop a criteria for determining poorly bonded areas. Poorly bonded specimens were manufactured and evaluated by the proposed non destructive test method. After undergoing nondestructive evaluation, the specimens were mechanically loaded to failure and the bond strength recorded. Nondestructive test predictions of bond strength will be compared with mechanical tests of bonding. Data will be presented which demonstrate the poor bond identification criteria.

Citation Download Citation

Elizabeth J. Linstrom and Susan C. Mantell "Real-time inspection of polymer composites during consolidation", Proc. SPIE 2948, Nondestructive Evaluation for Process Control in Manufacturing, (15 November 1996); https://doi.org/10.1117/12.259185

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