Vibration Monitoring of Wind Turbine Blade using Fiber Bragg Grating

Fattahi, Javad; Zabihollah, Abolghassem; Zareie, Shahin

doi:10.1260/0309-524x.34.6.721

Cited by 6 publications

(4 citation statements)

References 10 publications

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“…In the adopted configuration, a band width (of 2.9 nm which is) equal to ± 2400 μ m /m was considered a proper compromise in order to have 10 sensors per fibre line. Examples of fibre applications for wind turbine rotor blades appear in Schroeder and Fattahi .…”

Section: Methodsmentioning

confidence: 99%

A comprehensive investigation of trailing edge damage in a wind turbine rotor blade

2016

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Wind turbine rotor blades are sophisticated, multipart, lightweight structures whose aeroelasticity-driven geometrical complexity and high strength-to-mass utilization lend themselves to the application of glass-fibre or carbon-fibre composite materials. Most manufacturing techniques involve separate production of the multi-material subcomponents of which a blade is comprised and which are commonly joined through adhesives. Adhesive joints are known to represent a weak link in the structural integrity of blades, where particularly, the trailing-edge joint is notorious for its susceptibility to damage. Empiricism tells that adhesive joints in blades often do not fulfil their expected lifetime, leading to considerable expenses because of repair or blade replacement. Owing to the complicated structural behaviour-in conjunction with the complex loading situation-literature about the root causes for adhesive joint failure in blades is scarce. This paper presents a comprehensive numerical investigation of energy release rates at the tip of a transversely oriented crack in the trailing edge of a 34m long blade for a 1.5MW wind turbine. First, results of a non-linear finite element analysis of a 3D blade model, compared with experimental data of a blade test conducted at Danmarks Tekniske Universitet (DTU) Wind Energy (Department of Wind Energy, Technical University of Denmark), showed to be in good agreement. Subsequently, the effects of geometrical non-linear cross-section deformation and trailing-edge wave formation on the energy release rates were investigated based on realistic aeroelastic load simulations. The paper concludes with a discussion about critical loading directions that trigger two different non-linear deformation mechanisms and their potential impact on adhesive trailing-edge joint failure.

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Section: Methodsmentioning

confidence: 99%

A comprehensive investigation of trailing edge damage in a wind turbine rotor blade

2016

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“…Composite structures are gaining interest in many industries, including civil, transportation, and aerospace due to their excellent mechanical properties, particularly the strength to weight ratio [62][63][64][65][66][67][68]. In many applications, the composite structures are exposed to excessive vibration resulting to instability and unpredicted failure.…”

Section: Mrfs Embedded In Composite Structuresmentioning

confidence: 99%

The Recent Advances in Magnetorheological Fluids-Based Applications

Zareie¹,

Zabihollah²

2020

Emerging Trends in Mechatronics

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The magnetorheological fluids (MRF) are a generation of smart fluids with the ability to alter their variable viscosity. Moreover, the state of the MRF can be switched from the semisolid to the fluid phase and vice versa upon applying or removing the magnetic field. The fast response and the controllability are the main features of the MRF-based systems, which make them suitable for applications with high sensitivity and controllability requirements. Nowadays, MRF-based systems are rapidly growing and widely being used in many industries such as civil, aerospace, and automotive. This study presents a comprehensive review to investigate the fundamentals of MRF and manufacturing and applications of MRF-based systems. According to the existing works and current and future demands for MRF-based systems, the trend for future research in this field is recommended.

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“…In the energy sector FBG sensors are used for monitoring wind turbines [6], [7], [8], power grids [9], [10], and also in renewable energies solar power [11]. In the civil and industrial constructions sectors FBG are widely used for buildings structural monitoring [12], [13], [14], [15], smart building applications [16], [17], [18].…”

Section: Introductionmentioning

confidence: 99%