Share Email Print
cover

Proceedings Paper

Monitoring cure properties of out-of-autoclave BMI composites using IFPI sensor
Author(s): Amardeep Kaur; Sudharshan Anandan; Lei Yuan; Steve E. Watkins; K. Chandrashekhara; Hai Xiao; Nam Phan
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

A non-destructive technique for inspection of a Bismaleimide (BMI) composite is presented using an optical fiber sensor. High performance BMI composites are used for Aerospace application for their mechanical strength. They are also used as an alternative to toughened epoxy resins. A femtosecond-laser-inscribed Intrinsic Fabry-Perot Interferometer (IFPI) sensor is used to perform real time cure monitoring of a BMI composite. The composite is cured using the out-of-autoclave (OOA) process. The IFPI sensor was used for in-situ monitoring; different curing stages are analyzed throughout the curing process. Temperature-induced-strain was measured to analyze the cure properties. The IFPI structure comprises of two reflecting mirrors inscribed on the core of the fiber using a femtosecond-laser manufacturing process. The manufacturing process makes the sensor thermally stable and robust for embedded applications. The sensor can withstand very high temperatures of up to 850 °C. The temperature and strain sensitivities of embedded IFPI sensor were measured to be 1.4 pm/μepsilon and 0.6 pm/μepsilon respectively.

Paper Details

Date Published: 20 April 2016
PDF: 9 pages
Proc. SPIE 9803, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2016, 98031Z (20 April 2016); doi: 10.1117/12.2219492
Show Author Affiliations
Amardeep Kaur, Missouri Univ. of Science and Technology (United States)
Sudharshan Anandan, Missouri Univ. of Science and Technology (United States)
Lei Yuan, Clemson Univ. (United States)
Steve E. Watkins, Missouri Univ. of Science and Technology (United States)
K. Chandrashekhara, Missouri Univ. of Science and Technology (United States)
Hai Xiao, Clemson Univ. (United States)
Nam Phan, Office of Naval Research (United States)


Published in SPIE Proceedings Vol. 9803:
Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2016
Jerome P. Lynch, Editor(s)

© SPIE. Terms of Use
Back to Top