Advanced method to determine the curing-induced evolutions of chemical shrinkage and modulus

Author

Wang, Yong ; Woodworth, Laura ; Han, Bongtae

Author_Institution

Dept. of Mech. Eng., Univ. of Maryland, College Park, MD

fYear

2009

fDate

26-29 May 2009

Firstpage

168

Lastpage

171

Abstract

A novel method is proposed to simultaneously measure the effective chemical shrinkage and modulus evolutions of polymeric materials during polymerization. The glass fiber Bragg grating (FBG) sensors are embedded in two different uncured cylindrical polymer configurations and the Bragg wavelength (BW) shifts are documented continuously during the polymerization process. The configurations are designed for optimum measurement sensitivity while minimizing the effect of polymerization-induced heat generation. The two evolution properties are determined from the theoretical relationship between the BW shifts and the evolution properties. The method is successfully implemented for a high-temperature curing thermosetting polymer.

Keywords

Bragg gratings; curing; elastic moduli; fibre optic sensors; glass fibres; polymerisation; polymers; shrinkage; Bragg wavelength shifts; chemical shrinkage; curing; cylindrical polymer configurations; glass fiber Bragg grating sensors; heat generation; modulus; polymeric materials; polymerization; thermosetting polymer; Bragg gratings; Chemical engineering; Chemical sensors; Curing; Fiber gratings; Polymers; Shape measurement; Stress; Temperature sensors; Wavelength measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronic Components and Technology Conference, 2009. ECTC 2009. 59th

Conference_Location

San Diego, CA

ISSN

0569-5503

Print_ISBN

978-1-4244-4475-5

Electronic_ISBN

0569-5503

Type

conf

DOI

10.1109/ECTC.2009.5074011

Filename

5074011