Monitoring mode II fracture behaviour of composite laminates using embedded fiber-optic sensors

Hang Yin Ling; Kin Tak Lau; Zhongqing Su; Eric Tsun Tat Wong

doi:10.1016/j.compositesb.2006.07.004

Monitoring mode II fracture behaviour of composite laminates using embedded fiber-optic sensors

Hang Yin Ling, Kin Tak Lau, Zhongqing Su, Eric Tsun Tat Wong

Research output: Journal article publication › Journal article › Academic research › peer-review

22 Citations (Scopus)

Abstract

Utilization of embedded Fiber Bragg Grating (FBG) sensors for monitoring mode II fracture behaviour of composite laminate beams containing different delaminations along the thickness-wise direction, by virtue of End-Notch Flexure (ENF) tests, is presented. Non-uniform strain distribution due to the stress concentration at the delamination tip was examined by the way of observing the reflection spectrum from the FBG sensor. The stress concentration in ENF specimens, which are subjected to various applied loads, was analyzed in terms of the shift, shape, bandwidth and intensity of the reflection spectrum. Relationships between the load-displacement graphs and the corresponding reflection spectra under ENF tests were established. In addition, the feasibility and reliability of using the embedded FBG sensors for mode II fracture behaviour monitoring in the composite laminates is discussed.

Original language	English
Pages (from-to)	488-497
Number of pages	10
Journal	Composites Part B: Engineering
Volume	38
Issue number	4
DOIs	https://doi.org/10.1016/j.compositesb.2006.07.004
Publication status	Published - 1 Jun 2007

Keywords

A. Glass fibres
A. Laminates
B. Delamination
D. Non-destructive testing

ASJC Scopus subject areas

Ceramics and Composites
Mechanics of Materials
Mechanical Engineering
Industrial and Manufacturing Engineering

More information

10.1016/j.compositesb.2006.07.004

Cite this

@article{5159623c139146d1867eeff2e4f194d8,

title = "Monitoring mode II fracture behaviour of composite laminates using embedded fiber-optic sensors",

abstract = "Utilization of embedded Fiber Bragg Grating (FBG) sensors for monitoring mode II fracture behaviour of composite laminate beams containing different delaminations along the thickness-wise direction, by virtue of End-Notch Flexure (ENF) tests, is presented. Non-uniform strain distribution due to the stress concentration at the delamination tip was examined by the way of observing the reflection spectrum from the FBG sensor. The stress concentration in ENF specimens, which are subjected to various applied loads, was analyzed in terms of the shift, shape, bandwidth and intensity of the reflection spectrum. Relationships between the load-displacement graphs and the corresponding reflection spectra under ENF tests were established. In addition, the feasibility and reliability of using the embedded FBG sensors for mode II fracture behaviour monitoring in the composite laminates is discussed.",

keywords = "A. Glass fibres, A. Laminates, B. Delamination, D. Non-destructive testing",

author = "Ling, {Hang Yin} and Lau, {Kin Tak} and Zhongqing Su and Wong, {Eric Tsun Tat}",

year = "2007",

month = jun,

day = "1",

doi = "10.1016/j.compositesb.2006.07.004",

language = "English",

volume = "38",

pages = "488--497",

journal = "Composites Part B: Engineering",

issn = "1359-8368",

publisher = "Elsevier Ltd",

number = "4",

}

TY - JOUR

T1 - Monitoring mode II fracture behaviour of composite laminates using embedded fiber-optic sensors

AU - Ling, Hang Yin

AU - Lau, Kin Tak

AU - Su, Zhongqing

AU - Wong, Eric Tsun Tat

PY - 2007/6/1

Y1 - 2007/6/1

N2 - Utilization of embedded Fiber Bragg Grating (FBG) sensors for monitoring mode II fracture behaviour of composite laminate beams containing different delaminations along the thickness-wise direction, by virtue of End-Notch Flexure (ENF) tests, is presented. Non-uniform strain distribution due to the stress concentration at the delamination tip was examined by the way of observing the reflection spectrum from the FBG sensor. The stress concentration in ENF specimens, which are subjected to various applied loads, was analyzed in terms of the shift, shape, bandwidth and intensity of the reflection spectrum. Relationships between the load-displacement graphs and the corresponding reflection spectra under ENF tests were established. In addition, the feasibility and reliability of using the embedded FBG sensors for mode II fracture behaviour monitoring in the composite laminates is discussed.

AB - Utilization of embedded Fiber Bragg Grating (FBG) sensors for monitoring mode II fracture behaviour of composite laminate beams containing different delaminations along the thickness-wise direction, by virtue of End-Notch Flexure (ENF) tests, is presented. Non-uniform strain distribution due to the stress concentration at the delamination tip was examined by the way of observing the reflection spectrum from the FBG sensor. The stress concentration in ENF specimens, which are subjected to various applied loads, was analyzed in terms of the shift, shape, bandwidth and intensity of the reflection spectrum. Relationships between the load-displacement graphs and the corresponding reflection spectra under ENF tests were established. In addition, the feasibility and reliability of using the embedded FBG sensors for mode II fracture behaviour monitoring in the composite laminates is discussed.

KW - A. Glass fibres

KW - A. Laminates

KW - B. Delamination

KW - D. Non-destructive testing

UR - http://www.scopus.com/inward/record.url?scp=33847335520&partnerID=8YFLogxK

U2 - 10.1016/j.compositesb.2006.07.004

DO - 10.1016/j.compositesb.2006.07.004

M3 - Journal article

SN - 1359-8368

VL - 38

SP - 488

EP - 497

JO - Composites Part B: Engineering

JF - Composites Part B: Engineering

IS - 4

ER -

Monitoring mode II fracture behaviour of composite laminates using embedded fiber-optic sensors

Abstract

Keywords

ASJC Scopus subject areas

More information

Other files and links

Fingerprint

Cite this