The approach is applied numerically on two carbon fiber-reinforced epoxy composite structures: for delamination detection in a thin plate, and skin
This study presents a method for the quantitative identification of delamination identification in composite materials, leveraging distributed optical fiber sensors and a model updating approach. Initially, a
The early detection of closed delamination is important for ensuring the safety of laminated composite structures. In this article, an approach for delamination detection using fiber-optic interferometric
To understand the delamination process of the entire specimen, a three-dimensional (3D) finite element model incorporating cohesive elements for
Abstract and Figures This study develops a delamination detection system for smart ultra-high-performance concrete (UHPC) overlays using a fully-distributed fiber optic sensor.
This paper presents an extrinsic Fabry–Perot interferometer-based optical fiber sensor (EFPI) for measuring three-dimensional (3D) displacements, including interfacial sliding and debonding during
This research is related to a detection and imaging method of delamination damage in CFRP composite laminate structures. Conventional guided wave dete
The roof delamination instrument is a special monitoring instrument for monitoring the movement of the roof rock layer. The roof detachment instrument is also called the roof detachment...
Delamination is a prevalent type of damage in composite laminate structures. Its accumulation degrades structur-al performance and threatens the safety and integrity of aircraft. This study presents a
Request PDF | A New Fiber Optic Based Method for Delamination Detection in Composites | The early detection of closed delamination is important for ensuring the safety of
A complete 3D model of the composite delamination plate was built using ABAQUS and strain measurements of the composite plate were carried out using distributed fiber optic sensors.
Whether the combination coefficient and strain value are within the qualified standard is used to judge whether the quality of the top plate separation layer sensor is qualified.
This paper presents an experimental study where a distributed optical fibre sensor is embedded and used to follow the full manufacturing process of a
The scope of the activity is the development of an SHM system based on distributed fiber optic sensors able to detect, localise and measure, the debonded skin/stringer extensions and
This paper presents an extrinsic Fabry–Perot interferometer-based optical fiber sensor (EFPI) for measuring three-dimensional (3D) displacements,
A complete 3D model of the composite delamination plate was built using ABAQUS and strain measurements of the composite plate were carried out using distributed fiber optic sensors.
The initiation and propagation of delamination due to early-age shrinkage of the UHPC overlay were detected as sudden increases and their extension in spatial distribution of shrinkage
This paper presents the results of an experimental investigation on the use of fiber optic based technique for early detection of delamination at the web/flange junction of a GFRP I-beam.
The applicant is further developing and improving A fiber optic roof delamination sensor with simpler and more reliable structure, easier installation and lower cost is proposed on the basis of this paper.
By comparing the results for damaged and undamaged specimens, the location and extent of delamination or interfacial debonding can be deduced. To measure the small change in integrated
The objective of this study is to develop a delamination detection system for thin UHPC overlays bonded on concrete substrate with the PPP
Portuguese researchers have put forward a new hypothesis to explain what''s happening underneath the Atlantic off the coast of Portugal. At a recent
Real-time estimation of delamination occurrence induced by low-velocity impact in composite plates using optical fiber sensing system
Abstract Delamination detection is important in ensuring the safety and timely repair of structures. In this paper, a novel technique for detecting delamination is proposed. By embedding an optical fiber inside
Strain distributions along the sensor are obtained by optical low-coherence reflectometry and inverse scattering. The specimen''s residual strains in the sensor are used as an initial reference,
Abstract This paper details a study which was carried out on the application of FBG sensors for investigation of delamination crack status in glass fibre reinforced composite materials.
An experimental study is conducted to evaluate the performance of surface-mounted fiber optic strain sensors for delamination damage detection in eight-layer symmetric cross-ply
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