In-Situ Cure Monitoring of Composites by Fiber-Optic Molecular Sensors
Abstract
In-Situ Cure Monitoring of Composites by Fiber-Optic Molecular Sensors. Recently, a new technique has been developed for monitoring cure reactions in network forming polymers by using reactive molecular sensors. Diaminoazobenzene (DAA), for example, generates sensitive signals in UV-Visible and fluorescence spectra as a function of cure reaction in epoxy, such as DGEBA/ DDS system. This describes our current efforts on the application of molecular sensors to composite cure monitoring via remote sensing fiber-optics probes. A custom-built fiber-optic fluorimeter allows on-line sensing of fluorescence signals directly from the cure environment. Different optrode configurations are developed to probe the structure at the local sites of surface, bulk, and interface. In-Situ Cure Monitoring, Epoxy composites, Fiber-optic molecular sensors, Diaminoazobenzene label, Distal-end probe, Evanescent probe.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 10, 1989
- Accession Number
- ADA211495
Entities
People
- C. S. Sung
- Nakho Sung
- Wenbin Dang
Organizations
- Tufts University