Experiments on focusing and use of acoustic energy to enhance the rate of polymer healing

Eric A. Petersen; Katherine A. Barnes; Brian C. Fehrman; Umesh A. Korde

doi:10.1117/12.847667

8 April 2010 Experiments on focusing and use of acoustic energy to enhance the rate of polymer healing

Eric A. Petersen, Katherine A. Barnes, Brian C. Fehrman, Umesh A. Korde

Proceedings Volume 7650, Health Monitoring of Structural and Biological Systems 2010; 765029 (2010) https://doi.org/10.1117/12.847667
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2010, San Diego, California, United States

Abstract

We consider the effects of acoustic pressure on the curing of a two-part epoxy, which can be considered analogous to the polymer healing process. An epoxy sample is loaded into a tube and monitored throughout the early stages of curing by measuring its vibrational response upon periodic impulses. By tracing the natural frequencies of the epoxy-tube system and cross-checking the temperature of the epoxy, the progress of the curing can be quantified. Acoustic stimulation at three different frequencies is investigated and compared to the unstimulated case. We find that external acoustic pressure does seem to affect the curing, though much work remains to be completed.

Citation Download Citation

Eric A. Petersen, Katherine A. Barnes, Brian C. Fehrman, and Umesh A. Korde "Experiments on focusing and use of acoustic energy to enhance the rate of polymer healing", Proc. SPIE 7650, Health Monitoring of Structural and Biological Systems 2010, 765029 (8 April 2010); https://doi.org/10.1117/12.847667

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