Damage detection and assessment in fibre-reinforced composite structures with embedded fibre optic sensors-review

Zhou, Gang; Sim, L M

doi:10.1088/0964-1726/11/6/314

Cited by 233 publications

(150 citation statements)

References 142 publications

Supporting

Mentioning

150

Contrasting

Order By: Relevance

“…Furthermore, the typical NDE techniques are useful for identifying large interlaminar flaws, but insensitive to CMC materials flaws developed perpendicular to the surface under tensile creep conditions. There are techniques such as piezoelectric sensor [7,8], and optical fiber [9,10] that could be used for on-line health monitoring of CMC structures. However, these systems involve attaching an external sensor or putting special fibers in CMC composites, which would be problematic at high temperature applications.…”

Section: Introductionmentioning

confidence: 99%

Monitoring damage accumulation in ceramic matrix composites using electrical resistivity

2008

View full text Add to dashboard Cite

The electric resistance of woven SiC fiber reinforced SiC matrix composites were measured under tensile loading conditions. The results show that the electrical resistance is closely related to damage and that real-time information about the damage state can be obtained through monitoring of the resistance. Such self-sensing capability provides the possibility of on-board/in-situ damage detection and accurate life prediction for hightemperature ceramic matrix composites.Woven silicon carbide fiber-reinforced silicon carbide (SiC/SiC) ceramic matrix composites (CMC) possess unique properties such as high thermal conductivity, excellent creep resistance, improved toughness, and good environmental stability (oxidation resistance), making them particularly suitable for hot structure applications. In specific, CMCs could be applied to hot section components of gas turbines [1], aerojet engines [2], thermal protection systems [3], and hot control surfaces [4]. The benefits of implementing these materials include reduced cooling air requirements, lower weight, simpler component design, longer service life, and higher thrust [5]. It has been identified in NASA High Speed Research (HSR) program that the SiC/SiC CMC has the most promise for high temperature, high oxidation applications [6].One of the critical issues in the successful application of CMCs is on-board or insitu assessment of the damage state and an accurate prediction of the remaining service life of a particular component. This is of great concern, since most CMC components envisioned for aerospace applications will be exposed to harsh environments and play a key role in the vehicle's safety. On-line health monitoring can enable prediction of remaining life; thus resulting in improved safety and reliability of structural components. Monitoring can also allow for appropriate corrections to be made in real time, therefore leading to the prevention of catastrophic failures. Most conventional nondestructive evaluation (NDE) techniques such as ultrasonic C-scan, x-ray, thermography, and eddy current are limited since they require structural components of complex geometry to be taken out of service for a substantial length of time for post-damage inspection and assessment. Furthermore, the typical NDE techniques are useful for identifying large interlaminar flaws, but insensitive to CMC materials flaws developed perpendicular to the surface under tensile creep conditions. There are techniques such as piezoelectric sensor [7,8], and optical fiber [9,10] that could be used for on-line health monitoring of CMC structures. However, these systems involve attaching an external sensor or putting special fibers in CMC composites, which would be problematic at high temperature applications.https://ntrs.nasa.gov/search.jsp?R=20080047468 2018-05-11T18:03:58+00:00Z Most composite materials are multifunctional materials in which the damage is coupled with the material electrical resistance, providing the possibility of real-time information about the damage state thro...

show abstract

Section: Introductionmentioning

confidence: 99%

Monitoring damage accumulation in ceramic matrix composites using electrical resistivity

2008

View full text Add to dashboard Cite

show abstract

“…It is essential to monitor the structure near stress concentrations in order to ensure the structural integrity. In view of aforementioned issues, the structural health monitoring (SHM) technique has recently been developed for these composite structures [4,5].…”

Section: Introductionmentioning

confidence: 99%

Use of FBG Sensors for SHM in Aerospace Structures

et al. 2012

View full text Add to dashboard Cite

This paper details some significant findings on the use of the fiber Bragg grating (FBG) sensors for structural health monitoring (SHM) in aerospace fiber reinforced polymer (FRP) structures. A diminutive sensor provides a capability of imbedding inside FRP structures to monitor vital locations of damage. Some practical problems associated with the implementation of FBG based SHM systems in the aerospace FRP structures such as the difficulty of embedding FBG sensors during the manufacturing process and interrelation of distortion to FBG spectra due to internal damage, and other independent effects will be thoroughly studied. An innovative method to interpret FBG signals for identifying damage inside the structures will also be discussed.

show abstract

“…Long term real−time nondestructive monitoring can be realized by embedding (or adhering) FBG into (or onto) a composite structure, which means much to improve secu− rity and reliability of composite structures [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

An all-fibre multi-parameter sensor for composite structures based on a chirped fibre Bragg grating

Zhan

Yang

et al. 2013

Opto-Electronics Review

View full text Add to dashboard Cite

An all-fibre multi-parameter sensor for composite structures based on a chirped optical fibre Bragg grating (CFBG) has been studied theoretically and experimentally. The principle of multi-parameters sensing with a single CFBG is based on that the centre wavelength and the FWHM (full width at half maximum) in the reflection spectrum of a CFBG vary linearly with the temperature and/or the axial stress. A wavelength matched optical fibre long period grating (LPG) and another wavelength matched reference CFBG (CFBGR) have been used to interrogate the signal of the sensor CFBG (CFBGS). The temperature and strain of the composite structure have been monitored real-time with one CFBG as a single sensor head. The temperature resolution of 0.12°C and the strain resolution of 1.1μɛ for a composite structure have been realized in experiments. The experiment results agree well with the theoretical analyses.

show abstract

Damage detection and assessment in fibre-reinforced composite structures with embedded fibre optic sensors-review

Cited by 233 publications

References 142 publications

Monitoring damage accumulation in ceramic matrix composites using electrical resistivity

Monitoring damage accumulation in ceramic matrix composites using electrical resistivity

Use of FBG Sensors for SHM in Aerospace Structures

An all-fibre multi-parameter sensor for composite structures based on a chirped fibre Bragg grating

Contact Info

Product

Resources

About