Delamination detection in CFRP laminates using FOD sensor

Fucai Li; Kazuro Kageyama; Hideaki Murayama; Isamu Ohsawa

doi:10.1117/12.839673

20 October 2009 Delamination detection in CFRP laminates using FOD sensor

Fucai Li, Kazuro Kageyama, Hideaki Murayama, Isamu Ohsawa

Proceedings Volume 7493, Second International Conference on Smart Materials and Nanotechnology in Engineering; 74933K (2009) https://doi.org/10.1117/12.839673
Event: Second International Conference on Smart Materials and Nanotechnology in Engineering, 2009, Weihai, China

Abstract

In this paper, carbon fiber reinforced plastic (CFRP) laminates (pristine and delaminated) are addressed for the purpose of damage assessment. Recently developed Doppler effect-based fiber optic (FOD) sensor was bonded on surface of each CFRP laminate to acquire piezoceramic-disc-excited guided waves propagating in the specimen. Characteristics of the captured guided wave signals were extracted by taking advantage of two well-developed signal processing algorithms, namely, linear-phase finite impulse response filter and Hilbert transform, so as to investigate the influence of the delaminations to the guided wave propagation. When guided waves are incident on discontinuities, mode conversion may occur as a result of satisfying the boundary conditions along the discontinuities. Both the dispersive characteristics of multi-mode guided waves and features of the guided-wave-generated fundamental shear horizontal (SH0) wave were applied for damage evaluation and multiple-damage detection. The results demonstrate that the FOD sensor is effective in multiple delamination detection for CFRP laminates because of its omnidirectional property in ultrasonic detection.

Citation Download Citation

Fucai Li, Kazuro Kageyama, Hideaki Murayama, and Isamu Ohsawa "Delamination detection in CFRP laminates using FOD sensor", Proc. SPIE 7493, Second International Conference on Smart Materials and Nanotechnology in Engineering, 74933K (20 October 2009); https://doi.org/10.1117/12.839673

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