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Verification of multi-axial damage in Glass Fibre-Reinforced Polymer laminates by progressive failure analysis for Civil Engineering applications

Ahmed, Junaid (author)

The use of Glass Fibre-Reinforced Polymer as a building material in structures or structural components is on the rise. Standards such as CUR96, DNV and JRC provide a basis of design with the material. However, there is a lack of confidence in the design phase with structures made of Glass Fibre-Reinforced Polymer, resulting in the use of large...

master thesis 2023

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Frontal Polymerization in Fiber Reinforced Polymers: Influence of varying fiber volume fraction and varying geometry

Bhagali Nataraja Anup, Anup (author)

Frontal polymerization (FP) has emerged as a promising alternative to traditional bulk curing methods in recent years for manufacturing high-performance fibre-reinforced polymer (FRP) composites. The energy utilized in this self-propagating curing strategy is solely derived from the exothermic enthalpy of polymerization, making it potentially...

master thesis 2023

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Probability of Delamination Detection for CFRP DCB Specimens Using Rayleigh Distributed Optical Fiber Sensors

Falcetelli, F. (author), Cristiani, D.L.M. (author), Yue, N. (author), Sbarufatti, Claudio (author), Sante, Raffaella Di (author), Zarouchas, D. (author)

Distributed Optical Fiber Sensors (DOFS) show several inherent benefits with respect to conventional strain-sensing technologies and represent a key technology for Structural Health Monitoring (SHM). Despite the solid motivation behind DOFS-based SHM systems, their implementation for real-time structural assessment is still unsatisfactory...

conference paper 2023

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Comparative performance of high and medium resolution cameras for defect detection in carbon-fiber reinforced composites by digital shearography

Abedin, K.M. (author), Tao, N. (author), Anisimov, A. (author), Groves, R.M. (author)

The performance of defect detection in composite materials using digital shearography is important for correct decision-making in non-destructive testing. In this work, we compared a high-resolution 24-megapixel digital still camera (DSLR) and a conventional medium-resolution 5-megapixel camera to determine the detectability of blind holes in...

conference paper 2023

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Thermal management in radical induced cationic frontal polymerisation for optimised processing of fibre reinforced polymers

Staal, Jeroen (author), Smit, Edgar (author), Caglar, Baris (author), Michaud, Véronique (author)

Radical induced cationic frontal polymerisation (RICFP) is considered a promising low energy method for processing of fibre reinforced polymers (FRPs). Optimisation of the local heat balance between reinforcement, epoxy resin and the surrounding mould is required to pave the way for its adaptation to an industrial processing method for high...

journal article 2023

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Design and optimization of FRP traffic decks considering uplift bolt forces: Based on analytical and numerical approaches

Molenaar, Lennart (author)

This research is about which geometry of FRP slabs is the most optimal, in terms of costs, to use for a given load and boundary conditions taking the occurring uplift bolt forces into account. The first part of the report focuses on the calculation of the uplift forces in the bolted connections caused by the moving loads. For this, first a...

master thesis 2022

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Natural Fiber Reinforced Composites and Façade Applications: A research on the mechanical performance of plant fiber reinforced bio-resins and its possible façade applications

Merhi, Nader (author)

As a result of the growing awareness of the global environmental factors, principals of sustainability, and industrial ecology, the green chemistry and engineering are put to use into the development of the next generation of materials of construction. The need of materials independent from petroleum resources is considered a priority on the...

master thesis 2022

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Experimental and analytical study on shear behavior of strain-hardening cementitious composite beams reinforced with fiber-reinforced polymer bars

Gu, D. (author), Pan, Jinlong (author), Lukovic, M. (author), He, Jixuan (author)

Application of fiber-reinforced polymer (FRP) reinforcement in concrete beams may cause large deflection and crack width, as well as low shear capacity and ductility due to relatively small stiffness of FRP materials. To avoid these unfavorable factors and evaluate the shear behavior of FRP-reinforced structural members, a high-performance...

journal article 2022

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Capillary Effects in Fiber Reinforced Polymer Composite Processing: A Review

Teixidó, Helena (author), Staal, Jeroen (author), Çağlar, B. (author), Michaud, Véronique (author)

Capillarity plays a crucial role in many natural and engineered systems, ranging from nutrient delivery in plants to functional textiles for wear comfort or thermal heat pipes for heat dissipation. Unlike nano- or microfluidic systems with well-defined pore network geometries and well-understood capillary flow, fiber textiles or preforms used...

review 2022

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Qualification of distributed optical fiber sensors using probability of detection curves for delamination in composite laminates

Falcetelli, F. (author), Cristiani, D.L.M. (author), Yue, N. (author), Sbarufatti, Claudio (author), Troiani, Enrico (author), Di Sante, Raffaella (author), Zarouchas, D. (author)

Despite the promising application of Distributed Optical Fiber Sensors (DOFS) in monitoring damage in composite structures, their implementation outside academia is still unsatisfactory due to the lack of a systematic approach to assessing their damage detection performance. The existing tool developed for non-destructive evaluation,...

journal article 2022

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Numerical study on the creep behaviour of Fiber-Reinforced Polymer sandwich structures considering traffic loading

Ros, Vito (author)

Ageing of infrastructure leads to an increasing demand for new technologies and design solutions in current bridge engineering. Over the last decades the traffic intensity has grown tremendously, while design codes and regulations have become stricter. Many current steel bridges realised in The Netherlands suffer from fatigue problems....

master thesis 2021

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High-dimensional numerical optimization of fiber reinforced polymers with variational autoencoders and Bayesian optimization

Storm, Joep (author)

Designing engineering structures relies on accurate numerical simulations to predict the behaviour of a structure before its realization. In the design process, many variables influence the final structure. There is an incentive for optimizing the design based on the desire for cheaper structures and less material usage. Although a wide variety...

master thesis 2021

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Accuracy of strain measurement systems on a non-isotropic material and its uncertainty on finite element analysis

Baldassarre, Alessandro (author), Ocampo, Juan (author), Martinez, Marcias (author), Rans, C.D. (author)

The application of strain gauges as recommended by the ASTM standards provides accurate strain measurements in isotropic materials. However, their use in composite materials becomes more challenging due to their anisotropic nature. In this study, we hypothesized that the use of the distributed sensing system and the three-dimensional digital...

journal article 2020

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Form-Finding Framework for FRP Shells: A Multi-Step Structural Optimization Tool for Preliminary FRP designs

Tuffaha, Mohamad (author)

Fibre reinforced polymers, or FRP, are increasingly used in structural engineering applications. Permeating the construction field from the aerospace industry, FRP are applied in both the rehabilitation of existing degrading structures as well as the conception of new projects such as pedestrian and traffic bridges or building facades. The...

master thesis 2019

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A Feasibility Study on Weight Saving in Bascule Bridge Design by Implementing an FRP-deck: A case study on the Amalia bridge

Mouroulis, Stijn (author)

This master thesis contains a study on the implementation of Fibre Reinforced Polymers (FRP) onto a steel bascule bridge, with the aim of weight reduction. As a case study, the Amalia bridge near Waddinxveen (crossing the Gouwe channel) is used. Two alternative design propositions are presented. The thesis has been subdivided into several parts,...

master thesis 2018

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Conceptual design and numerical validation of a composite monocoque solar passenger vehicle chassis

Denny, Jason (author), Veale, Kirsty (author), Adali, Sarp (author), Leverone, F.K. (author)

The concept of the composite monocoque chassis has been implemented in many vehicle designs; however, there is limited open literature defining the process of simulating a composite monocoque chassis. The purpose of this research is to develop a composite monocoque chassis by analysing its structural integrity through an iterative finite...

journal article 2018

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Coupled hygro-mechanical finite element method on determination of the interlaminar shear modulus of glass fiber-reinforced polymer laminates in bridge decks under hygrothermal aging effects

Jiang, X. (author), Luo, Chengwei (author), Qiang, X. (author), Zhang, Qilin (author), Kolstein, M.H. (author), Bijlaard, F.S.K. (author)

To investigate the mechanical degradation of the shear properties of glass fiber-reinforced polymer (GFRP) laminates in bridge decks under hygrothermal aging effects, short-beam shear tests were performed following the ASTM test standard (ASTM D790-10A). Based on the coupled hygro-mechanical finite element (FE) analysis method, an inverse...

journal article 2018

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Micromechanical modeling of tension stiffening in FRP-strengthened concrete elements

Ghiassi, B. (author), Soltani, Masoud (author), Rahnamaye Sepehr, Sara (author)

This article presents a micromodeling computational framework for simulating the tensile response and tension-stiffening behavior of fiber reinforced polymer–strengthened reinforced concrete elements. The total response of strengthened elements is computed based on the local stress transfer mechanisms at the crack plane including concrete...

journal article 2018

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Assessment of the dynamic response of a floating pontoon bridge with a fiber reinforced polymer superstructure

Heuberger, Chris (author)

Floating bridges are found at locations where deep water must be crossed for a long distance, such as in Norwegian fjords. The superstructure of the existing floating bridges is usually constructed from steel. In a marine environment these bridges are exposed to dynamic wave loads. As such, the current floating bridges suffer severe damage due...

master thesis 2018

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Carbon fiber-reinforced polymer pultrusions adhesively bonded inside aluminum joints: experimental and numerical study

Lavalette, N. (author), Bergsma, O.K. (author), Zarouchas, D. (author), Benedictus, R. (author)

In the context of lightweight structure design for the transportation and robotics industries, new types of composite structures are being developed, in the form of trusses made of fiber-reinforced polymer composite members of small diameter. The main objective of this work is to study adhesive joints, bonding pultruded composite tubes inside...

conference paper 2018