Hierarchical fiber-optic-based sensing system for impact damage monitoring of large-scale CFRP structures

Shu Minakuchi; Nobuo Takeda; Haruka Tsukamoto; Hidehiko Banshoya

doi:10.1117/12.880669

31 March 2011 Hierarchical fiber-optic-based sensing system for impact damage monitoring of large-scale CFRP structures

Shu Minakuchi, Nobuo Takeda, Haruka Tsukamoto, Hidehiko Banshoya

Proceedings Volume 7984, Health Monitoring of Structural and Biological Systems 2011; 798427 (2011) https://doi.org/10.1117/12.880669
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2011, San Diego, California, United States

Abstract

This study proposes a novel hierarchical sensing system for detecting impact damage in composite structures. In the hierarchical system, numerous three-dimensionally structured sensor devices are distributed throughout the whole structural area and connected with an optical fiber network through transducing mechanisms. The distributed devices detect damage, and the fiber optic network gathers the damage signals and transmits the information to a measuring instrument. This study began by discussing the basic concept of the hierarchical sensing system through comparison with existing fiber-optic-based systems and the impact damage detection system for the composite structure was then proposed. The sensor devices were developed based on Comparative Vacuum Monitoring (CVM) system and Brillouin based distributed strain sensing was utilized to gather the damage signals from the distributed devices. Finally a verification test was conducted using a carbon fiber reinforced plastic (CFRP) fuselage demonstrator. Occurrence of barely visible impact damage was successfully detected and it was clearly indicated that the hierarchical system has better repairability, higher robustness, and wider monitorable area compared to existing systems.

Citation Download Citation

Shu Minakuchi, Nobuo Takeda, Haruka Tsukamoto, and Hidehiko Banshoya "Hierarchical fiber-optic-based sensing system for impact damage monitoring of large-scale CFRP structures", Proc. SPIE 7984, Health Monitoring of Structural and Biological Systems 2011, 798427 (31 March 2011); https://doi.org/10.1117/12.880669

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