Relevant bibliographies by topics / Fibre bridging

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Fibre bridging'

Author: Grafiati
Published: 4 June 2021
Last updated: 14 February 2022

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Journal articles on the topic "Fibre bridging"

1

Xu, Zhi Hong, Wen Yin Liang, and Yu Jing Liang. "Experimental Study of Steel Fibre Bridging Action on Crack Propagation in Fibre Reinforced Concrete." Key Engineering Materials 324-325 (November 2006): 1067–70. http://dx.doi.org/10.4028/www.scientific.net/kem.324-325.1067.

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In this paper the bridging action of steel fibres on the model I crack propagation has been studied experimentally for steel fibre reinforced concrete (FRC). From the experimental results three main conclusions are obtained. First, the bridging action increases with the number of the steel fibres across the crack surface and the stress intensity factor near the crack tip decreases thereby. Second, bridging action increases with the strength of the matrix because the matrix with higher strength can provide stronger interfacial bond with steel fibres. Third, the interfacial bonding gets damaged when the steel fibres under cyclic loads and the bridging action degrades with the cycle number.
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Skadins, Ulvis, and Janis Brauns. "INVESTIGATION OF STEEL FIBRE PULLOUT AND MODELING OF BRIDGING BEHAVIOUR IN SFRC." Engineering Structures and Technologies 4, no. 3 (October 4, 2012): 77–88. http://dx.doi.org/10.3846/2029882x.2012.729653.

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By adding fibres to concrete mix the objective is to bridge discrete cracks providing for some control to the fracture process and increase the fracture energy. Fibres become active mainly when cracking starts and deformation of the fibre occurs. Pullout tests with four types of fibres with different orientation, embedment lengths, and concrete strengths are performed to simulate the bridging process. Fibre pullout behaviour is analysed for relatively small slippage displacement to keep it close to real designing situations. The test results show significant effect of fibre type on pullout behaviour, nevertheless the effect is intangible on fibres inclined at 30 degrees or more. An effective displacement is introduced, derived from experimental force-slip curves, when fibre becomes involved in bridging. Based on the effective displacement and simplified average force-slip curves a numerical model is proposed to analyse the tensile stresses transferred by fibres crossing a crack.
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Wydra, Małgorzata, Piotr Dolny, Grzegorz Sadowski, and Jadwiga Fangrat. "Flexural Behaviour of Cementitious Mortars with the Addition of Basalt Fibres." Materials 14, no. 6 (March 10, 2021): 1334. http://dx.doi.org/10.3390/ma14061334.

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The results of flexural tests of basalt fibre-reinforced cementitious mortars in terms of flexural strength and the occurrence of the bridging effect are summarised. Mixture proportions and curing conditions were altered for various series. The main parameters concerning mixture proportions were water to cement ratio (w/c), micro-silica and plasticiser addition and fibre dosage (1%, 3% and 6.2% by binder’s mass). Various curing conditions were defined by different temperatures, humidity and time. The influence of the amount of water inside the pores of the hardened cementitious matrix on the flexural strength values, as far as the impact of the alkaline environment on basalt fibres’ performance is concerned, was underlined. The designation of flexural strength and the analysis of post-critical deformations were also performed on the reference series without fibres and with the addition of more common polypropylene fibres. The bridging effect was observed only for the basalt fibre-reinforced mortar specimens with a relatively low amount of cement and high w/c ratio, especially after a short time of hardening. For the lowest value of w/c ratio (equalling 0.5), the bridging effect did not occur, but flexural strength was higher than in the case of non-reinforced specimens. Comparing mortars with the addition of basalt and polypropylene fibres, the former demonstrated higher values of flexural strength (assuming the same percentage dosage by the mass of the binder). Nevertheless, the bridging effect in that case was obtained only for polypropylene fibres.
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Riccio, Aniello, Angela Russo, Andrea Sellitto, Cinzia Toscano, Davide Alfano, and Mauro Zarrelli. "Experimental and Numerical Assessment of Fibre Bridging Toughening Effects on the Compressive Behaviour of Delaminated Composite Plates." Polymers 12, no. 3 (March 3, 2020): 554. http://dx.doi.org/10.3390/polym12030554.

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Increasing the Mode I inter-laminar fracture toughness of composite laminates can contribute to slowing down delamination growth phenomena, which can be considered one of the most critical damage mechanisms in composite structures. Actually, the Mode I interlaminar fracture toughness (GIc) in fibre-reinforced composite materials has been found to considerably increase with the crack length when the fibre bridging phenomenon takes place. Hence, in this paper, the fibre bridging phenomenon has been considered as a natural toughening mechanism able to replace embedded metallic or composite reinforcements, currently used to increase tolerance to inter-laminar damage. An experimental/numerical study on the influence of delamination growth on the compressive behaviour of fibre-reinforced composites characterised by high sensitivity to the fibre bridging phenomenon has been performed. Coupons, made of material systems characterised by a variable toughness related to a high sensitivity to the fibre bridging phenomenon and containing artificial through-the-width delaminations, were subjected to a compressive mechanical test and compared to coupons made of standard material system with constant toughness. Out-of-plane displacements and strains were monitored during the compression test by means of strain gauges and digital image correlation to assess the influence of fibre bridging on delamination buckling, delamination growth and on the global buckling of the specimens, including buckling shape changes. Experimental data were combined with a numerical study, performed by means of a virtual crack closure technique based procedure, named SMart Time XB – Fibre Bridging (SMXB-FB), able to mimic the crack bridging effect on the toughness properties of the material system. The combination of numerical results and experimental data has allowed the deformations and the buckling shape changes to be correlated to the onset and evolution of damage and, hence, contributes to improving the knowledge on the interaction of the failure mechanisms in the investigated composite specimens.
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Ni, Q.-Q. "A method to evaluate interfacial fracture energy on a fibre/matrix interface." Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications 219, no. 2 (April 1, 2005): 77–83. http://dx.doi.org/10.1243/146442005x10274.

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A double cleavage drilled compression (DCDC) specimen was analysed using the boundary element method. The DCDC specimen of FRP composites was proposed and used to evaluate the interfacial behaviour and fracture energy in model composites of carbon fibre reinforced polymer (CFRP). As a result, it was confirmed that the DCDC specimen had the mode I stress distribution for the hole offsetting displacement of b = 0, in which the specimen configuration was symmetrical, while it had the mixed-mode stress distribution for b = 0. The approach of calculating the interfacial fracture energy was established using both the analysis and experiments. Furthermore, the bridging fibre DCDC specimen was proposed and the effect of bridging fibres on the loading phase was made clear. It was shown that the DCDC test was a useful method to evaluate the interfacial behaviour of fibre/matrix in composites.
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Gupta, M., R. C. Alderliesten, and R. Benedictus. "Crack paths in fibre metal laminates: Role of fibre bridging." Engineering Fracture Mechanics 108 (August 2013): 183–94. http://dx.doi.org/10.1016/j.engfracmech.2013.03.020.

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Russo, Angela, Andrea Sellitto, Salvatore Saputo, Valerio Acanfora, and Aniello Riccio. "Cross-Influence between Intra-Laminar Damages and Fibre Bridging at the Skin–Stringer Interface in Stiffened Composite Panels under Compression." Materials 12, no. 11 (June 7, 2019): 1856. http://dx.doi.org/10.3390/ma12111856.

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In this paper, the skin–stringer separation phenomenon that occurs in stiffened composite panels under compression is numerically studied. Since the mode I fracture toughness and, consequently, the skin–stringer separation can be influenced by the fibre bridging phenomenon at the skin–stringer interface, in this study, comparisons among three different material systems with different fibre bridging sensitivities have been carried out. Indeed, a reference material system has been compared, in terms of toughness performance, against two materials with different degrees of sensitivity to fibre bridging. A robust numerical procedure for the delamination assessment has been used to mimic the skin–stringer separation. When analysing the global compressive behaviour of the stiffened panel, intra-laminar damages have been considered in conjunction with skin–stringer debonding to evaluate the effect of the fibre and matrix breakage on the separation between the skin and the stringer for the three analysed material systems. The latter are characterised by different toughness characteristics and fibre bridging sensitivities, resulting in a different material toughness.
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Kapeliotis, Markos, Rebeca Alejandra Gavrila Laic, Alvaro Jorge Peñas, Jos Vander Sloten, Pieter Vanden Berghe, Nele Famaey, and Bart Depreitere. "Collagen fibre orientation in human bridging veins." Biomechanics and Modeling in Mechanobiology 19, no. 6 (June 13, 2020): 2455–89. http://dx.doi.org/10.1007/s10237-020-01349-w.

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Hsueh, C. H. "Matrix cracking with frictional bridging fibres in continuous fibre ceramic composites." Journal of Materials Science 30, no. 7 (April 1995): 1781–89. http://dx.doi.org/10.1007/bf00351610.

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Hsueh, C. H. "Matrix cracking with frictional bridging fibres in continuous fibre ceramic composites." Journal of Materials Science 30, no. 19 (October 1995): 4793–800. http://dx.doi.org/10.1007/bf01154487.

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Dissertations / Theses on the topic "Fibre bridging"

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Solberg, Daniel. "Adsorption kinetics of cationic polyacrylamides on cellulose fibres and its influence on fibre flocculation." Licentiate thesis, KTH, Fibre and Polymer Technology, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-1665.

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The adsorption of cationic polyacrylamide (C-PAM) and silicananoparticles onto a model surface of silicon oxide wascompared with the adsorption of C-PAM to fibres and theirinfluence on flocculation of a fibre suspension. An increase inionic strength affects the polyelectrolyte adsorption indifferent ways for these two systems. With the silica surface,an increase in the ionic strength leads to a continuousincrease in the adsorption. However, on a cellulose fibre, theadsorption increases at low ionic strength (1 to 10 mM NaCl)and then decreases at higher ionic strength (10 to 100 mMNaCl). It was shown that the adsorption of nanoparticles ontopolyelectrolyte-covered surfaces has a great effect on both theadsorbed amount and the thickness of the adsorbed layer. Theresults showed that electrostatic interactions were thedominating force for the interaction between both the fibresand the polyelectrolytes, and between the polyelectrolytes andthe silica particles. Furthermore, at higher NaClconcentrations, a significant non-ionic interaction between thesilicon oxide surface/particles and the C-PAM was observed.

The adsorption rate of C-PAM onto fibres was rapid andquantitative adsorption was detected in the time range between1 and 8 s at polyelectrolyte addition levels below 0.4 mg/g.Conversely, an increase in the amount of added polymer leads toan increased polymer adsorption up to a quasi-static saturationlevel. However, after a few seconds this quasi-staticsaturation level was significantly lower than the level reachedat electrostatic“equilibrium”. The adsorbed amountof charges at full surface coverage after 1 to 8 s contact timecorresponded to only 2 % of the total fibre charge, whereasafter 30 minutes it corresponded to 15 % of the total fibrecharge. This shows that a full surface coverage at shortcontact times is not controlled by surface charge. Based onthese results, it is suggested that a combination of anon-equilibrium charge barrier against adsorption and ageometric restriction can explain the difference between theadsorption during 1 to 8 s and the adsorption after 30 minutes.With increasing time, the cationic groups are neutralised bythe charges on the fibre as the polyelectrolyte reconforms to aflat conformation on the surface.

The addition of a high concentration of C-PAM to a fibresuspension resulted in dispersion rather than flocculation.This behaviour is most likely due to an electrostericstabilisation of the fibres when the polyelectrolyte isadsorbed. Flocculation of the fibre suspension occurred at lowadditions of C-PAM. A maximum in flocculation was found ataround 50 % surface coverage and dispersion occurred above 100% surface coverage. It was also shown that for a given level ofadsorbed polymer, a difference in adsorption time between 1 and2 seconds influenced the flocculation behaviour. An optimum inflocculation at 50 % surface coverage in combination with theimportance of polymer reconformation time at these shortcontact times showed that the C-PAM induced fibre flocculationagrees with La Mer and Healy’s description of bridgingflocculation.

A greater degree of flocculation was observed with theaddition of silica nanoparticles to the fibre suspension thanin the single polyelectrolyte system. Flocculation increased asa function of the concentration of added nanoparticles until0.5 mg/g. At higher additions the flocculation decreased againand this behaviour is in agreement with an extended model formicroparticle-induced flocculation. An increase in flocculationwas especially pronounced for the more extended silica-2particles. This effect is attributed to the more extendedpolyelectrolyte layer, since the adsorbed amount wasessentially the same for both silica particles.

Finally it was found that fines from the wood fibres had asignificant effect on the flocculation. When fines were added,a greater degree of flocculation was detected. Furthermore, itwas also more difficult to redisperse the fibres with polymerin the presence of fines.

Keywords:Adsorption, bridging, cationic polymers,cellulose fibres, electrosteric stabilisation flocculation,ionic strength, nanoparticle, polyelectrolyte, reconformation,retention aids and silica

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Dyson, Igor Niladri. "The fracture behaviour of carbon fibre/polyetheretherketone composites." Thesis, Imperial College London, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.309100.

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Bayer, Daniela, and Mike Richter. "Zur Anwendung bruchmechanischer Konzepte für die Modellierung der rissüberbrückenden Wirkung von Rovings." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2009. http://nbn-resolving.de/urn:nbn:de:bsz:14-ds-1244047456442-11748.

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Textilbeton ist ein Verbundwerkstoff aus einer Feinbetonmatrix und einer textilen Bewehrung, die aus sogenannten Rovings besteht. Nach Reißen der spröden Matrix sind diese Rovings in der Lage, die Risse in der Matrix zu überbrücken. In diesem Beitrag wird ein analytisches Modell vorgestellt, welches den Einfluss der Rovings auf das Rissverhalten erfassen kann. Die Wirkung der Fasern wird durch rissüberbrückende Spannungen approximiert. Dabei kommt unter Annahme linear elastischen Materialverhaltens das bruchmechanische Konzept der Methode der Gewichtsfunktionen zum Einsatz. Als ein spezielles Anwendungsgebiet des vorgestellten bruchmechanischen Konzeptes werden Risse im Bereich von Übergreifungen der textilen Bewehrung untersucht. Hier kann es, abhängig von der vorhandenen Übergreifungslänge, zum Auszug der Rovings kommen. Um diesen Versagensmechanismus zu verhindern, ist eine Mindestübergreifungslänge erforderlich.
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Lin, Y. "Optimum design for sustainable 'green' overlays : controlling flexural failure." Thesis, Coventry University, 2014. http://curve.coventry.ac.uk/open/items/b5ba73e5-9cb8-4a0b-ac99-c53b3c3e54ed/1.

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The target of the ‘Green Overlays’ research was a cost effective, minimal disruption, sustainable and environmentally friendly alternative to the wholesale demolition, removal and complete reconstruction of the existing structural concrete pavement. The important problem of flexural resistance for strengthening concrete pavements with structural overlays has been scrutinised. A new mix design method for steel fibre reinforced, roller compacted, polymer modified, bonded concrete overlay has been proposed. The mixes developed were characterized of high flexural strength and high bond strength with the old concrete substrate. ‘Placeability’ and ‘compactability’ of the mix were two dominant issues during laboratory investigation. An innovative approach for establishing the relationship between Stress and Crack Face Opening Displacement for steel fibre reinforced concrete beams under flexure was developed. In addition, a new and simple method for calculating the interfacial Strain Energy Release Rate of both, a two-dimensional specimen and a three-dimensional model of the overlay pavement system were developed. This method can be readily and easily used by practicing engineers. Finally, a new test specimen and its loading configuration for measuring interfacial fracture toughness for concrete overlay pavements were established. The interfacial fracture toughness of a composite concrete beam, consisted of steel fibre-reinforced roller compacted polymer modified concrete bonded on conventional concrete and undergoing flexure, was assessed. In summary, this thesis presents four key findings: A new mix design method for steel fibre-reinforced roller compacted polymer modified concrete bonded on conventional concrete. A new method for establishing the fibre bridging law by an inverse analysis approach. A new, simplified method for calculating strain energy release rate at the interface of a composite beam. A new, innovative technique for calculating strain energy release rate at the interface of an overlaid pavement. The thesis contains a plethora of graphs, data-tables, examples and formulae, suitable for future researchers.
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Fernberg, Patrik. "Fiber bridging concepts applied to short fiber composites." Licentiate thesis, Luleå tekniska universitet, 2000. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-18743.

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Polymer composite materials are in wide-spread use in the transportation industry. In aerospace industry the use these materials are established while in automotive industry the interest is increasing. The attention of automotive industry is to a great deal focused on various kinds of molded composites such as glass mat reinforced thermoplastics (GMT) and sheet molding compound (SMC). Their interest is to a large extent driven by the possibility to manufacture components of complex geometry in a cost- efficient process with these materials. An increasing number of car and truck manufacturers are using SMC for external panels such as trunk covers, hoods, roofs and spoilers. A property of obvious importance for an external car- or truck-panel is its capacity to withstand impact. In this context, improved understanding of crack growth and toughening mechanisms of the material is of great interest. A major part of the work presented in this thesis is driven by an interest to increase the understanding of how material composition and microstructure of short fiber composites influence their overall fracture behaviour. In materials such as metals and unreinforced polymers, linear elastic fracture mechanics (LEFM) is widely used, often with great success, both in design and in development of new materials. Unfortunately, problems arise when LEFM is applied to short fiber composites. This is due to the large process zone that develops ahead of a crack in these materials. The fundamental assumption of LEFM, that the damage zone at the tip of the crack is small compared to crack length, is often violated in experiments. The presented thesis considers a different approach, in which the damage ahead of a crack tip is described by a bridging-law. By considering the bridging-law as the major failure property of the material, a coupling between mechanisms acting on a microscale and the macroscopic failure behaviour can be established. No such information can be obtained using a LEFM approach where the material behaviour is described in terms of a single value, the fracture toughness. Bridging-laws for three different short fiber composites are experimentally determined and presented in the first paper of the thesis. A matter of key importance for future work in this field is that there are methods available for experimental verification of the suggested fiber bridging approach. Optical strain field measurement methods are therefore very useful. The thesis contains a pilot study to evaluate the use of two recently developed optical methods , Stereoscopic Digital Speckle Photography (Stereo-DSP) and combined DSP-DSPI (Digital Speckle Pattern Interferometry), for measurements of fracture behaviour of notched short fiber composites. We found Stereo-DSP to be a versatile technique that can be used when knowledge of overall displacement fields is required. The combined technique can with advantage be used when detailed information about large deformation at small areas is of interest, e.g. the complex fiber bridging interaction at the crack tip of a short fiber composite. The last paper in the thesis presents a study where the influence of fiber surface treatment on transverse cracking in cross-ply laminates was investigated. In the case of tubes and pressure vessels, the formation of transverse cracks ultimately leads to leakage since cracks connect and form a path through the wall. In the presented study, our ambition was to investigate the influence of film former polymer on transverse cracking properties of cross-ply laminates.Both onset of transverse cracking and tendency for multiple crack development were strongly affected by the different film formers. The strong film former effect was proposed to be due to a combination of improved interfacial adhesion and the plasticizing effect from the film former on the interphase region. The thesis is composed by the following papers: Patrik Fernberg, Lars Berglund, Bridging law and toughness characterisation of CSM and SMC composite, to be submitted. Angelica Andersson, Patrik Fernberg, Mikael Sjödahl, Optical methods to study fracture of notched glass mat composites. Proceedings of the International Conference on trends in Optical Nondestructive Testing, Lugano, Switzerland, May 3-6, 2000 (in press). Patrik Fernberg, Lars Berglund, Effects of glass fiber size composition (film former type) on transverse cracking in cross-ply laminates. Accepted for publication in Composites, Part A.
Godkänd; 2000; 20070318 (ysko)
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Fernberg, Patrik. "Toughness of short fiber composites : an approach based on crack-bridging /." Luleå : Luleå tekniska univ, 2002. http://epubl.luth.se/1402-1544/2002/12/index.html.

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Motamedi, Damoon. "Nonlinear XFEM modeling of delamination in fiber reinforced composites considering uncertain fracture properties and effect of fiber bridging." Thesis, University of British Columbia, 2013. http://hdl.handle.net/2429/44630.

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Initiation and propagation of a crack in composite materials can affect their global mechanical properties severely. From a numerical modeling perspective, most conventional macro-level methods reported for composite laminates are based on the assumption that a Representative Volume Element (RVE) of the material is periodically repeated over the entire sample. However, a considerable amount of spatial non-uniformity in material and geometrical parameters can exist in both unidirectional (UD) and woven fabric composites. The scattered distribution of fibers, fibers penetration between composite layers, voids within the matrix, human errors during sample preparation, and imperfect thickness distribution can be among the most common sources of such non-uniformity. In turn, these non-uniformities can make the numerical simulation of composites under the assumption of a periodic RVE unreliable, and thereby, the stochastic modeling of effective material properties becomes essential for a more precise assessment of composites’ mechanical behaviour. In the present work, a new three-dimensional (3D) stochastic extended finite element method (XFEM) is proposed and implemented to model the delamination surface in composite samples by integrating the capabilities of the finite element method (FEM) commercial software (ABAQUS) into a user-defined FORTRAN code and MATLAB package. XFEM is known to offer significant advantages over conventional FEM by enabling optimal convergence rates in the presence of pronounced discontinuities/singularities such as cracks. The effect of nonlinear modeling parameters such as cohesive zone length, penalty stiffness factor and large deformation are also considered in the proposed approach to add to the accuracy of simulations. The XFEM model is first tested and validated against previously reported data in the literature. Next, a statistical distribution is sought from data non-repeatability during a set of double cantilever beam (DCB) and end-notched flexure (ENF) tests conducted on Poly (phenylene Sulfide) PPS/Glass thermoplastic composite samples. Results from the experiments and XFEM are compared and demonstrate the capability of the new numerical approach in capturing non-repeatable material response, often seen during the fracture testing of UD composites to characterize their mode I and mode II fracture properties.
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Fulenwider, Thomas Edward. "Modular Laser Combat System for Remotely Operated Vehicles: Bridging the Gap Between Computer Simulation and Live Fire." DigitalCommons@CalPoly, 2010. https://digitalcommons.calpoly.edu/theses/335.

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In the emerging industry of small unmanned vehicles, pioneered by small businesses and research institutions, a suitable combat system test platform is needed. Computer simulations are useful, but do not provide the definitive proof of effective operation necessary for deployment of a combat system. What is needed is an affordable simulated weapons system that enables live flight testing without the used of live weaponry. A framework is developed here for the construction of a simulated weapon using Free Space Optical (FSO) infrared communication. It is developed in such a way to ensure compatibility with a variety of platforms including ground and aerial vehicles, so that identical but configurable modules can be used on any vehicle that is to take place in a live combat simulation. A proof-of-concept implementation of this modular laser combat system framework is also presented and tested. The implemented system shows the value of such a simulated weapons system and future areas of improvement are also explored.
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松原, 剛., Go MATSUBARA, 英夫 尾野, Hideo ONO, 啓介 田中, and Keisuke TANAKA. "高強度GFRPのモードⅠ層間はく離疲労き裂進展におよぼす繊維架橋の影響." 日本機械学会, 2004. http://hdl.handle.net/2237/9138.

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Höwer, Daniel Verfasser], Stefanie [Akademischer Betreuer] [Reese, Kai-Uwe [Akademischer Betreuer] Schröder, and Jaan-Willem [Akademischer Betreuer] Simon. "Numerical and experimental investigation of debonding accounting for severe fiber bridging / Daniel Höwer ; Stefanie Reese, Kai-Uwe Schröder, Jaan-Willem Simon." Aachen : Universitätsbibliothek der RWTH Aachen, 2020. http://d-nb.info/1221808702/34.

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Books on the topic "Fibre bridging"

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Johnson, W. S. Investigation of fiber bridging in double cantilever beam specimens. Hampton, Va: National Aeronautics and Space Administration, Langley Research Center, 1986.

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White, Seth M. Bridging the worlds of fire managers and researchers: Lessons and opportunities from the wildland fire workshops. Portland, OR: United States Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, 2004.

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Great Britain. Fire Service Inspectorate. Bridging the gap: Managing a modernised fire service : a scoping study. HM Fire Service Inspectorate, 2001.

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Center, Langley Research, ed. A progressive damage methodology for residual strength predictions of center-crack tension composite panels. Hampton, Va: National Aeronautics and Space Administration, Langley Research Center, 1996.

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Application of fiber bridging models to fatigue crack growth in unidirectional titanium matrix composites. [Washington, DC: National Aeronautics and Space Administration, 1992.

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S, Johnson W., and United States. National Aeronautics and Space Administration., eds. Application of fiber bridging models to fatigue crack growth in unidirectional titanium matrix composites. [Washington, DC: National Aeronautics and Space Administration, 1992.

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Bridging The Gap Between Engineering And The Global World A Case Study Of The Coconut Coir Fiber Industry In Kerala India. Morgan & Claypool, 2008.

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Book chapters on the topic "Fibre bridging"

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Steenbrink, J. H. M. "Motivic Milnor Fibre for Nondegenerate Function Germs on Toric Singularities." In Bridging Algebra, Geometry, and Topology, 255–67. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-09186-0_16.

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Xu, Zhi Hong, Wen Yin Liang, and Yu Jing Liang. "Experimental Study of Steel Fibre Bridging Action on Crack Propagation in Fibre Reinforced Concrete." In Fracture and Damage Mechanics V, 1067–70. Stafa: Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/0-87849-413-8.1067.

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Khan, S. U., R. C. Alderliesten, and R. Benedictus. "Crack Growthin Fibre Metal Laminates Under Variable Amplitude Loading." In ICAF 2009, Bridging the Gap between Theory and Operational Practice, 839–58. Dordrecht: Springer Netherlands, 2009. http://dx.doi.org/10.1007/978-90-481-2746-7_45.

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Vermeer, Pascal, René Alderliesten, and Rinze Benedictus. "Hybrid Structures for Concentrated Load Transmission in Fibre Composites: Initial Experiments." In ICAF 2009, Bridging the Gap between Theory and Operational Practice, 1069–81. Dordrecht: Springer Netherlands, 2009. http://dx.doi.org/10.1007/978-90-481-2746-7_58.

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Rodi, Riccardo, René Alderliesten, and Rinze Benedictus. "An Experimental Approach to Investigate Detailed Failure Mechanisms in Fibre Metal Laminates." In ICAF 2009, Bridging the Gap between Theory and Operational Practice, 493–512. Dordrecht: Springer Netherlands, 2009. http://dx.doi.org/10.1007/978-90-481-2746-7_28.

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Gu, Bin, Hong Yuan Liu, and Yiu Wing Mai. "Effect of Input Electric Field on Fatigue Degradation of Piezoelectric Fibre Bridging Force." In Advances in Composite Materials and Structures, 593–96. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-427-8.593.

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Evans, Michelle. "Bridging Explosives and Fire Debris Analyses." In Forensic Analysis of Fire Debris and Explosives, 285–304. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-25834-4_10.

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Sakai, Mototsugu, and Tatsuya Miyajima. "Matrix Cracking and Fiber Bridging of Carbon Fiber Reinforced Carbon Matrix Composites." In Fracture Mechanics of Ceramics, 69–82. Boston, MA: Springer US, 1992. http://dx.doi.org/10.1007/978-1-4615-3350-4_5.

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Northolt, M. G. "Aramids—Bridging the Gap between Ductile and Brittle Reinforcing Fibres." In Recent Advances in Liquid Crystalline Polymers, 299–310. Dordrecht: Springer Netherlands, 1985. http://dx.doi.org/10.1007/978-94-009-4934-8_20.

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Confalonieri, Federica, Aram Cornaggia, and Umberto Perego. "Mixed-Mode Delamination with Large Displacement Modeling of Fiber-Bridging." In Lecture Notes in Mechanical Engineering, 367–77. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-41057-5_30.

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Conference papers on the topic "Fibre bridging"

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Molter, L. "FAUSST – bridging the gap between steel and fibre reinforced materials." In 14th International Naval Engineering Conference and Exhibition. IMarEST, 2018. http://dx.doi.org/10.24868/issn.2515-818x.2018.015.

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For a variety of applications, such as shipbuilding or automotive, a variety of materials is used in order to meet certain design constraints or certification limitations. Within ship building for international waters, different design codes are distinguished for civil and naval use. While the SOLAS (safety of life at seas) ship code and the HSC (high speed craft) code have strict regulation in the use of composite materials, some naval rules enable such materials already leading to ship designs e.g. the Visby or Zumwalt class. However, the joining of multi-material structures remains challenging from a technical and regulative point of view. Composite materials aboard of ships has a variety of benefits, such as weight reduction, fuel reduction, increased corrosion resistance and the ability to use different innovative design solutions. Nevertheless, these benefits have to be pondered against the higher material and process costs. Moreover, strict design rules according to naval requirements, e.g. shock resistance, impact, etc. need to be met for the materials as well as their joints. The presented developments focus on one of the process challenges needed, being the joining of a steel structure and a composite material. Within the shipbuilding industry the preferred joining mechanism is welding, whereas other procedures such as bonding or riveting are complex in several manners, e.g. approval. To overcome this challenge FAUSST, a joint based on a hybrid knitted fabric, has been developed. This fabric is composed of steel and glass fibres in a way that a transition element is created, thereby effectively bridging both materials. It can be welded on one side to a metallic structure and integrated on the other side into a FRP. Depending on the design of the transition element loads of up to 240 kN per meter joint can be transferred in the presented design with an overlap length of only 10 mm. This transition element, therefore, may lead to more sophisticated designs using composite materials.
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Li, Tongyun, Haymen Shams, Cyril C. Renaud, Alwyn J. Seeds, Richard Penty, Martyn Fice, and Ian White. "Multi-service Digital Radio over Fibre System with Millimetre Wave Bridging." In 2018 International Topical Meeting on Microwave Photonics (MWP). IEEE, 2018. http://dx.doi.org/10.1109/mwp.2018.8552908.

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Kalli, Kyriacos, Antreas Theodosiou, Stefan S. Stojanovic, and Andreas Ioannou. "Multi-core optical fibre shape sensing with femtosecond laser inscribed bridging cladding waveguides." In Seventh European Workshop on Optical Fibre Sensors (EWOFS 2019), edited by Kyriacos Kalli, Gilberto Brambilla, and Sinead O. O'Keeffe. SPIE, 2019. http://dx.doi.org/10.1117/12.2540418.

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Weiss, M., A. Stohr, M. Huchard, S. Fedderwitz, B. Charbonnier, V. Rymanov, S. Babiel, and D. Jager. "60GHz radio-over-fibre wireless system for bridging 10Gb/s ethernet links." In 2008 34th European Conference on Optical Communication. IEEE, 2008. http://dx.doi.org/10.1109/ecoc.2008.4729234.

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Pyrz, Ryszard, and Jens V. Nygaard. "In-Situ Delamination Studies Using X-Ray Microtomography." In ASME 2002 International Mechanical Engineering Congress and Exposition. ASMEDC, 2002. http://dx.doi.org/10.1115/imece2002-33466.

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Considering existing microscopical techniques to study microstructures of materials, one can find that non-destructive information from the internal structure of an object in natural conditions can be obtained by transmission X-ray microscopy. Combination of X-ray transmission technique with tomographical reconstruction allows to get three-dimensional information about the internal microstructure. In this case any internal area can be reconstructed as a set of flat cross sections which can be used to analyse the two- and three-dimensional morphological parameters. For X-ray methods the contrast in the images is a mixed combination of density and compositional information which provides means for non-destructive reconstruction of the internal structure. The paper presents experimental results of crack propagation and fibre bridging glass fibre epoxy samples that were collected in-situ during loading in a X-ray scanner.
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Boba, Katarzyna, Ian Bond, and Richard Trask. "Thermal Ageing Mitigation of FRP Composites Using Vascular Networks." In ASME 2014 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/smasis2014-7615.

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Incorporation of multifunctionality to fibre reinforced polymer composite materials delivers many benefits. One example includes improved longevity of components through increasing permissible temperatures of operation, which could be achieved via in-situ cooling. As the temperature of composite components approaches the glass transition temperature (Tg) of the matrix, thermal stress induced ageing greatly increases [1], [2], thus the incentive for integrated cooling. In order to assess the damage, which could be caused by exposure to elevated temperatures, isothermal ageing was performed at a temperature 15°C lower than the materials Tg (2200 hours at 110°C). Material used in this study is a carbon/epoxy prepreg system (Gurit, SE70), with a Tg of 126°C when cured at 110°C. Results have shown a significant drop in Short Beam Shear (SBS) Strength starting after exposure for 1700h and increase in fibre bridging seen in mode I Double Cantilever Beam (DCB) testing. Fracture surface analysis using SEM indicated that fibres were generally less well bonded to the matrix, with visible changes began occurring as early as 1000h exposure. These results indicate that extended exposure of a material at near Tg temperatures has a detrimental effect on material properties. To mitigate against this phenomenon, a series of tests were performed on SBS and DCB specimens in a raised temperature (110°C) environment, which incorporated in-situ cooling. The specimens were placed in an oven at 110°C and were cooled down to a constant temperature of 60°C via the internal vascular cooling arrangement. Further testing is underway to assess the inhibition of ageing and maintenance of the original composite material by active cooling using embedded vascular networks.
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Stigh, Ulf. "Cohesive Laws for Delamination of CFRP: Experiments and Model." In ASME 2010 International Mechanical Engineering Congress and Exposition. ASMEDC, 2010. http://dx.doi.org/10.1115/imece2010-37482.

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In the present paper, we study delamination of a carbon fibre reinforced composite at a small length scale, i.e. without consideration of crack bridging. The study is performed within the framework of cohesive modelling. We propose methods based on the applications of the path independent J-integral to measure the cohesive law for delamination. With a DCB-specimen, the cohesive law corresponding to mode I loading is measured and with an ENF-specimen, the law corresponding to mode II loading is measured. These laws are used to calibrate a mixed-mode cohesive law. It is argued that the most important parameters of a cohesive law are the ability to provide the correct fracture energy and strength. The cohesive law is developed using a minimum of adjustable parameters to provide a transparent calibration process.
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Chulya, Abhisak, and John P. Gyekenyesi. "In-Situ NDE Monitoring of Crack Bridging in Ceramic Composites via Crack Opening Displacement." In ASME 1994 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1994. http://dx.doi.org/10.1115/94-gt-444.

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A study of crack bridging in long-fiber reinforced ceramic matrix composites (CMC) is the main focus of this paper. The in-situ observation using NDE techniques reveals that 1D SiC/CAS CMCs show only partial fiber bridging behavior while 2D SiC/SiC CMCs possess an excellent bridging mechanism. Laser interferometric technique was successfully applied to measure crack opening displacements (COD) in the notched specimens under four-point flexural loading. The onset of precracking and the effects of fiber bridging were also detected by in-situ optical microscopy and acoustic emission techniques. The applied load-COD relations were shown and on the basis of these results, the bridging stiffness parameter can be determined via the fracture mechanics formulation proposed by Cox and Marshall.
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S, Ajimi, Keerthy M. Simon, and Bharati Raj. "A Review on Residual Life Assessment of Plain and Reinforced Concrete Members." In International Web Conference in Civil Engineering for a Sustainable Planet. AIJR Publisher, 2021. http://dx.doi.org/10.21467/proceedings.112.33.

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Under fatigue loading, concrete like quasi-brittle materials exhibit softening behaviour since an inelastic zone will be formed in front of the crack tip called the fracture process zone (FPZ). There are various toughening mechanisms that exhibiting in this region. Current design practices for reinforced concrete assumes a zero tensile strength for concrete which is actually overly conservative. In fact, concrete can bear significant tensile stress and strain. Therefore, the tension softening response of RC member should consider in the study. Under fatigue loading, strength and stiffness decrease progressively according to the maximum amplitude and the number of cycles of loading. Fracture plays an important role in failure of normally and lightly reinforced beam. Since FPZ mechanisms and fibre bridging action resist crack propagation, we have to consider these mechanisms while assessing remaining life of RC member. Fatigue failure occurs when applied load is much less than the moment capacity. Such structures susceptible to fatigue load need to be monitored and residual life is to be predicted. This paper is presenting a review on the residual strength assessment on plain and reinforced concrete. The review includes the influence of various tension-softening models in predicting the residual life of plain and reinforced concrete. A comparative study is also conducted in order to assess the residual life by considering various tension softening laws.
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Rubinstein, Asher A. "Micromechanical Analysis of the Failure Process in Ceramic Matrix Composites." In ASME 1991 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1991. http://dx.doi.org/10.1115/91-gt-095.

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An analysis of the effectiveness of fiber reinforcement in brittle matrix composites is presented. The analytical method allows consideration of discrete fiber distribution and examination of the development of crack growth parameters on the microscale. The problem associated with bridging zone development is addressed here; therefore, the bridging zone is considered to be smaller than the main preexisting crack, and the small scale approach is used. The mechanics of the reinforcement is accurately accounted for in the process zone of a growing crack. Closed form solutions characterizing the initial failure process are presented for linear and nonlinear force-fiber pullout displacement relationships. The implicit exact solution for the extended bridging zone is presented as well.
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Reports on the topic "Fibre bridging"

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White, Seth M. Bridging the worlds of fire managers and researchers: lessons and opportunities from the Wildland Fire Workshops. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station, 2004. http://dx.doi.org/10.2737/pnw-gtr-599.

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