Monitoring cure properties of out-of-autoclave BMI composites using IFPI sensor

Amardeep Kaur; Sudharshan Anandan; Lei Yuan; Steve E. Watkins; K. Chandrashekhara; Hai Xiao; Nam Phan

doi:10.1117/12.2219492

20 April 2016 Monitoring cure properties of out-of-autoclave BMI composites using IFPI sensor

Amardeep Kaur, Sudharshan Anandan, Lei Yuan, Steve E. Watkins, K. Chandrashekhara, Hai Xiao, Nam Phan

Proceedings Volume 9803, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2016; 98031Z (2016) https://doi.org/10.1117/12.2219492
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2016, Las Vegas, Nevada, United States

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.

Conference Presentation

Citation Download Citation

Amardeep Kaur, Sudharshan Anandan, Lei Yuan, Steve E. Watkins, K. Chandrashekhara, Hai Xiao, and Nam Phan "Monitoring cure properties of out-of-autoclave BMI composites using IFPI sensor", Proc. SPIE 9803, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2016, 98031Z (20 April 2016); https://doi.org/10.1117/12.2219492

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available