Speakers - 2026 Speakers

Title: Characterizing nanoparticle dispersion with a novel micro thermographic approach based on pulsed laser excitation

Abstract

This work wants to propose an innovative nondestructive pulsed thermographic approach utilizing a nanosecond pulsed laser as a heat source for assessing the presence of nanoparticle aggregates in nanocomposites. Different degrees of dispersion levels of carbon nanotubes (CNTs) enriched epoxy resin nanocomposites were investigated with a cooled infrared camera equipped with a macro lens to improve the geometric resolution of the images (up to 6 µm). The technique successfully exploits the high energy flux delivered by the laser in a short time, allowing for a significant improvement in energy resolution. Clusters with sizes as low as 30 µm were clearly identified as embedded in the matrix with well-defined contours. This research represents a significant advancement in image quality and time reduction for fast non-destructive evaluations (NDE) in the field of nanocomposites. In turn, the process is suitable for automated in-line quality control of manufactured parts that must meet desired specifications.

Audience take away from your presentation:

• Participants will be introduced to an innovative non-destructive evaluation technique for assessing nanoparticle dispersion in composite materials.
• People from industry may be very interested in a non-destructive evaluation method capable of ensuring product quality and compliance with specifications.
• This research may be useful to other faculty to expand their research or teaching on non-destructive evaluation of nano composites.
• This NDE technique could offer a practical solution to address the challenge of testing the production of components made of nanocomposites, mitigating issues related to poor nanoparticle dispersion.
• The non-destructive evaluation method presented here enhances design accuracy by ensuring adherence to strict requirements, given that nanoparticle dispersion can be readily tested.