Monitoring the failure forms of a composite laminate system by using panda polarization maintaining fiber Bragg gratings

Zhang, Xiaoqiang; Chen, Ruishan; Wang, Anting; Xu, Yong; Jiang, Yong; Ming, Hai; Zhao, Weisheng

doi:10.1364/oe.27.017571

Cited by 10 publications

(5 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Lastly, it is important to underline that the proposed method has intrinsic advantages in terms of accuracy and reliability with respect to other ones reported in literature where or Δ are estimated without modal analyses [12], [19], [20]. In fact, we model at first the materials and then perform the electromagnetic simulation without approximations.…”

Section: Simulation Approachmentioning

confidence: 98%

“…The detection of in-plane and through-thickness strains of composite has been realized by using polarized light in embedded optical fiber sensors and embedded planar optics [8], [12]- [14]. In order to prevent subsurface delamination between plylayers, it is useful to take into account through-thickness strains.…”

Section: Introductionmentioning

confidence: 99%

“…The proposed design takes into account the: i) mechanical and thermal behavior of composite material, ii) electromagnetic modal analysis of optical fibers, iii) spectral response of the grating. The investigation method is exhaustive and more precise with respect to those reported in most of the literature, in which or Δ are estimated without carrying out modal analyses [12], [19], [20]. Moreover, in this paper, for the first time, we propose the use of solid Adhesive Polyimide Films (APFs) with the aim to improve PM fiber temperature sensitivity and to increase the simultaneous discrimination of temperature/strain changes.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Design of Polarization-Maintaining FBGs Using Polyimide Films to Improve Strain-Temperature Sensing in CFRP Laminates

et al. 2021

View full text Add to dashboard Cite

Uniform Fiber Bragg Grating sensors based on Polarization-Maintaining fibers are designed for simultaneous longitudinal strain and temperature measurement of Carbon Fiber Reinforced Polymer laminates. Panda, Bow tie and Pseudo-rectangle optical fiber shape sections are investigated employing three different embedding methods, for each optical fiber. The simulation accurately takes into account that the fibers are embedded in unidirectional Carbon Fiber Reinforced Polymer and covered between two adhesive polyimide films. An exhaustive, accurate and robust investigation of the mechanisms originating Bragg wavelength shift is developed by considering a complete multiphysical model including: the propagation modes and their interaction, the birefringence, the optomechanical and thermal behaviour of both the optical fiber and the embedding composite material. For the first time, the use of polyimide films is proposed to obtain an increase of temperature sensor sensitivity, reducing the stress-transfer, due to thermal expansion, between the composite laminate and the sensing element. The designed Fiber Bragg Grating sensors are compared and their potential application, for simultaneous strain and temperature measurement of Carbon Fiber Reinforced Polymer is discussed.

show abstract

Section: Simulation Approachmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Design of Polarization-Maintaining FBGs Using Polyimide Films to Improve Strain-Temperature Sensing in CFRP Laminates

et al. 2021

View full text Add to dashboard Cite

show abstract

“…These methods typically infer the in-plane strains only, with no implementation yet demonstrated for through-thickness strain monitoring. Recent publications [8] , have discussed theoretically the use of polarisation maintaining (PM) optical fibre as a means to resolve throughthickness strain of a composite material [8] . However, the approach relies on consistent fast axis alignment, which for a cylindrical (or even D-shaped) optical fibre is very difficult to practically realise, due to the dynamic nature of the curing process and the optical fibre's potential for axial rotation.…”

Section: Introductionmentioning

confidence: 99%

Real-time through-thickness and in-plane strain measurement in carbon fibre reinforced polymer composites using planar optical Bragg gratings

Holmes

Godfrey

Bull

et al. 2020

Optics and Lasers in Engineering

View full text Add to dashboard Cite

A new strain sensor is proposed which can measure both through-thickness and in-plane strains within a laminated fibre-reinforced composite material. The planar sensor uses novel embedded planar optic sensors and is demonstrated on a carbon fibre composite test coupon. The planar optical sensor was fabricated via flame hydrolysis deposition and was physically machined to reduce the substrate thickness to < 50 μm. Strain components are decoupled through monitoring the transverse electric and transverse magnetic effective refractive indices of two orthogonal planar waveguides. The work investigates if the embedded planar sensors have any mechanical knockdown effects on the composite structure and demonstrates their effectiveness at decoupling three orthogonal strain components.

show abstract

“…The Panda type PMF is the most popular design for this fiber type. It is used in fiberoptic gyroscopes, coherent communication lines, and in distributed sensors of pressure, temperature, and other physical quantities [11][12][13]. Panda fiber is a heterogeneous structure made of doped quartz glass.…”

mentioning

confidence: 99%

Analysis of the Polymer Two-Layer Protective Coating Impact on Panda-Type Optical Fiber under Bending

2022

View full text Add to dashboard Cite

The article discusses the effects of thermal-force on the Panda-type optical fiber. The studies used a wide temperature range. The research used two thermal cycles with exposures to temperatures of 23, 60 and −60 °C. The field of residual stresses in the fiber formed during the drawing process was determined and applied. Panda was considered taking into account a two-layer viscoelastic polymer coating under conditions of tension winding on an aluminum coil in the framework of a contact problem. The paper investigated three variants of coil radius to analyze the effect of bending on fiber behavior. The effect of the coating thickness ratio on the system deformation and optical characteristics was analyzed. Qualitative and quantitative patterns of the effect of temperature, bending, thickness of individual polymer coating layers and relaxation transitions of their materials on the Panda optical fiber deformation and optical characteristics were established. Assessment of approaches to the calculation of optical characteristics (values of the refractive indices and fiber birefringence) are given in the framework of the study. The patterns of deformation and optical behavior of the Panda-type fiber with a protective coating, taking into account the nonlinear behavior of the system materials, were original results.

show abstract

Monitoring the failure forms of a composite laminate system by using panda polarization maintaining fiber Bragg gratings

Cited by 10 publications

References 29 publications

Design of Polarization-Maintaining FBGs Using Polyimide Films to Improve Strain-Temperature Sensing in CFRP Laminates

Design of Polarization-Maintaining FBGs Using Polyimide Films to Improve Strain-Temperature Sensing in CFRP Laminates

Real-time through-thickness and in-plane strain measurement in carbon fibre reinforced polymer composites using planar optical Bragg gratings

Analysis of the Polymer Two-Layer Protective Coating Impact on Panda-Type Optical Fiber under Bending

Contact Info

Product

Resources

About