The Experts below are selected from a list of 63 Experts worldwide ranked by ideXlab platform

Hugo Thienpont - One of the best experts on this subject based on the ideXlab platform.

  • Microstructured optical fibre-based sensors for structural health monitoring applications
    Optofluidics Sensors and Actuators in Microstructured Optical Fibers, 2015
    Co-Authors: Francis Berghmans, Camille Sonnenfeld, Thomas Geernaert, Sanne Sulejmani, Hugo Thienpont
    Abstract:

    We review the state-of-the-art of microstructured optical fibre Bragg grating (MOFBG) sensors for structural health monitoring (SHM) applications. We focus on a specific microstructured optical fibre (MOF) design to which we refer as ‘butterfly’ MOF to illustrate the potential of this technology. This fibre is highly birefringent and encodes pressure and transverse strain into the spectral distance between the two Bragg peaks reflected by a fibre Bragg grating fabricated within this MOF. We discuss possible SHM-related applications of MOFBG sensors, such as cure monitoring and residual strain quantification during Composite Material Manufacturing, shear stress measurements in lap joints and temperature-insensitive vibration monitoring.

  • Microstructured Optical Fiber Bragg Grating Sensors for Structural Health Monitoring Applications
    EWSHM - 7th European Workshop on Structural Health Monitoring, 2014
    Co-Authors: Francis Berghmans, Camille Sonnenfeld, Karima Chah, Hugo Thienpont
    Abstract:

    We first shortly review the state-of-the-art of microstructured optical fiber Bragg grating (MOFBG) sensors for structural health monitoring applications. We then focus on a specific microstructured optical fiber (MOF) design to which we refer as ÔButterflyÕ MOF. This fiber is highly birefringent and encodes the transverse strain into the spectral distance between the two Bragg peaks reflected by a fiber Bragg grating fabricated in this fiber. Since the birefringence of that MOF is not sensitive to temperature changes, the transverse strain measurement is independent of temperature variations. We subsequently discuss the potential of our MOFBG sensors for structural health monitoring related applications, including three-dimensional strain measurements within Composite Materials, cure monitoring and residual strain quantification following Composite Material Manufacturing, shear stress measurements in lap joints and temperature insensitive vibration monitoring.

Francis Berghmans - One of the best experts on this subject based on the ideXlab platform.

  • Microstructured optical fibre-based sensors for structural health monitoring applications
    Optofluidics Sensors and Actuators in Microstructured Optical Fibers, 2015
    Co-Authors: Francis Berghmans, Camille Sonnenfeld, Thomas Geernaert, Sanne Sulejmani, Hugo Thienpont
    Abstract:

    We review the state-of-the-art of microstructured optical fibre Bragg grating (MOFBG) sensors for structural health monitoring (SHM) applications. We focus on a specific microstructured optical fibre (MOF) design to which we refer as ‘butterfly’ MOF to illustrate the potential of this technology. This fibre is highly birefringent and encodes pressure and transverse strain into the spectral distance between the two Bragg peaks reflected by a fibre Bragg grating fabricated within this MOF. We discuss possible SHM-related applications of MOFBG sensors, such as cure monitoring and residual strain quantification during Composite Material Manufacturing, shear stress measurements in lap joints and temperature-insensitive vibration monitoring.

  • Microstructured Optical Fiber Bragg Grating Sensors for Structural Health Monitoring Applications
    EWSHM - 7th European Workshop on Structural Health Monitoring, 2014
    Co-Authors: Francis Berghmans, Camille Sonnenfeld, Karima Chah, Hugo Thienpont
    Abstract:

    We first shortly review the state-of-the-art of microstructured optical fiber Bragg grating (MOFBG) sensors for structural health monitoring applications. We then focus on a specific microstructured optical fiber (MOF) design to which we refer as ÔButterflyÕ MOF. This fiber is highly birefringent and encodes the transverse strain into the spectral distance between the two Bragg peaks reflected by a fiber Bragg grating fabricated in this fiber. Since the birefringence of that MOF is not sensitive to temperature changes, the transverse strain measurement is independent of temperature variations. We subsequently discuss the potential of our MOFBG sensors for structural health monitoring related applications, including three-dimensional strain measurements within Composite Materials, cure monitoring and residual strain quantification following Composite Material Manufacturing, shear stress measurements in lap joints and temperature insensitive vibration monitoring.

B Chevallereau - One of the best experts on this subject based on the ideXlab platform.

  • mathematical model of stress formation during vacuum resin infusion process
    Composites Part B-engineering, 1999
    Co-Authors: Igor Sevostianov, Victor Verijenko, C J Von Klemperer, B Chevallereau
    Abstract:

    Abstract Composite Material Manufacturing technology based on vacuum infusion which is also known as resin film infusion technology, utilises a vacuum bag to debulk or compact parts of complete laminate. After debulking the resin is allowed to be infused by the vacuum to completely wet-out the reinforcements and eliminate air voids in the laminate structure. The resin infusion can also develop stresses in the fibres. Further, different types of heterogeneity can be formed in the laminae. The objective of this article is to develop a mathematical model of the stress and heterogeneity formation during the resin film infusion process. A heuristic model which considers the viscous flow through the porous reinforcement is developed and it allows an understanding of the influence of different process parameters on the pressure distribution in the infused resin. The reinforcement permeability tensor is defined by the Carman–Kozeny equation and depends on average pore size and specific pore concentration. The use of a non-linear equation of filtration allows for a definition of the pressure distribution inside a viscous liquid resin dependant on the external flux. The fibres which form the preform are assumed as being the pure elastic bodies and the resin as a non-Newtonian viscous liquid. The results obtained allow the simulation of complex Manufacturing process to be carried out.

Camille Sonnenfeld - One of the best experts on this subject based on the ideXlab platform.

  • Microstructured optical fibre-based sensors for structural health monitoring applications
    Optofluidics Sensors and Actuators in Microstructured Optical Fibers, 2015
    Co-Authors: Francis Berghmans, Camille Sonnenfeld, Thomas Geernaert, Sanne Sulejmani, Hugo Thienpont
    Abstract:

    We review the state-of-the-art of microstructured optical fibre Bragg grating (MOFBG) sensors for structural health monitoring (SHM) applications. We focus on a specific microstructured optical fibre (MOF) design to which we refer as ‘butterfly’ MOF to illustrate the potential of this technology. This fibre is highly birefringent and encodes pressure and transverse strain into the spectral distance between the two Bragg peaks reflected by a fibre Bragg grating fabricated within this MOF. We discuss possible SHM-related applications of MOFBG sensors, such as cure monitoring and residual strain quantification during Composite Material Manufacturing, shear stress measurements in lap joints and temperature-insensitive vibration monitoring.

  • Microstructured Optical Fiber Bragg Grating Sensors for Structural Health Monitoring Applications
    EWSHM - 7th European Workshop on Structural Health Monitoring, 2014
    Co-Authors: Francis Berghmans, Camille Sonnenfeld, Karima Chah, Hugo Thienpont
    Abstract:

    We first shortly review the state-of-the-art of microstructured optical fiber Bragg grating (MOFBG) sensors for structural health monitoring applications. We then focus on a specific microstructured optical fiber (MOF) design to which we refer as ÔButterflyÕ MOF. This fiber is highly birefringent and encodes the transverse strain into the spectral distance between the two Bragg peaks reflected by a fiber Bragg grating fabricated in this fiber. Since the birefringence of that MOF is not sensitive to temperature changes, the transverse strain measurement is independent of temperature variations. We subsequently discuss the potential of our MOFBG sensors for structural health monitoring related applications, including three-dimensional strain measurements within Composite Materials, cure monitoring and residual strain quantification following Composite Material Manufacturing, shear stress measurements in lap joints and temperature insensitive vibration monitoring.

Dai Fu-hong - One of the best experts on this subject based on the ideXlab platform.

  • Infrastructure study for optical fiber grating in smart Composite Materials
    Transducer and Microsystem Technologies, 2007
    Co-Authors: Dai Fu-hong
    Abstract:

    The infrastructure study is very important,when optical fiber grating is embedded in Composite Materials for structure health monitoring.Fiber Bragg grating(FBG)is used to monitor the temperature evolution and residual stress of Composite laminates during the cure process.Termination and connection methods for optical fibers embedded in Composite Materials are developed.Ingress/egress is designed to be sufficiently robust to withstand the rigours of the Composite Material Manufacturing process.Successful probability of smart Composite Materials with fiber Bragg grating is enhanced.Investigation into the influence of embedded optical fibers is performed by finite element method and experimental method.The results show that effect of embedded optical fibers is not limited.These works provide premise for application of embedded optical fibers in Composite Materials.