Relevant bibliographies by topics / Fibre drawing

Contents

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

Academic literature on the topic 'Fibre drawing'

Author: Grafiati
Published: 4 June 2021
Last updated: 14 March 2023

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Journal articles on the topic "Fibre drawing"

1

FOREST, M. GREGORY, and HONG ZHOU. "Unsteady analyses of thermal glass fibre drawing processes." European Journal of Applied Mathematics 12, no. 4 (August 2001): 479–96. http://dx.doi.org/10.1017/s0956792501004557.

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Fibre drawing is an important industrial process for synthetic polymers and optical communications. In the manufacture of optical fibres, precise diameter control is critical to waveguide performance, with tolerances in the submicron range that are met through feedback controls on processing conditions. Fluctuations arise from material non-uniformity plague synthetic polymers but not optical silicate fibres which are drawn from a pristine source. The steady drawing process for glass fibres is well-understood (e.g. [11, 12, 20]). The linearized stability of steady solutions, which characterize limits on draw speed versus processing and material properties, is well-understood (e.g. [9, 10, 11]). Feedback is inherently transient, whereby one adjusts processing conditions in real time based on observations of diameter variations. Our goal in this paper is to delineate the degree of sensitivity to transient fluctuations in processing boundary conditions, for thermal glass fibre steady states that are linearly stable. This is the relevant information for identifying potential sources of observed diameter fluctuation, and for designing the boundary controls necessary to alter existing diameter variations. To evaluate the time-dependent final diameter response to boundary fluctuations, we numerically solve the model nonlinear partial differential equations of thermal glass fibre processing. Our model simulations indicate a relative insensitivity to mechanical effects (such as take-up rates, feed-in rates), but strong sensitivity to thermal fluctuations, which typically form a basis for feedback control.
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CHAKRAVARTHY, SRINATH S., and WILSON K. S. CHIU. "Boundary integral method for the evolution of slender viscous fibres containing holes in the cross-section." Journal of Fluid Mechanics 621 (February 12, 2009): 155–82. http://dx.doi.org/10.1017/s0022112008004783.

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We consider the evolution of slender viscous fibres with cross-section containing holes with application to fabrication of microstructured optical fibres. The fibre evolution is driven by either prescribing velocity or a force at the ends of the fibre, and the free surfaces evolve under the influence of surface tension, internal pressurization, inertia and gravity. We use the fact that ratio of the typical fibre radius to the typical fibre length is small to perform an asymptotic analysis of the full three-dimensional Navier–Stokes equations similar to earlier work on non-axisymmetric (but simply connected) fibres. A numerical solution to the multiply connected steady-state drawing problem is formulated based on the solution the Sherman–Lauricella equation. The effects of different drawing and material parameters like surface tension, gravity, inertia and internal pressurization on the drawing are examined, and extension of the method to non-isothermal evolution is presented.
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Ginzburg, V. V. "Kinetic model of fibre drawing." Polymer 34, no. 24 (December 1993): 5123–27. http://dx.doi.org/10.1016/0032-3861(93)90257-b.

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Chen, Michael J., Yvonne M. Stokes, Peter Buchak, Darren G. Crowdy, and Heike Ebendorff-Heidepriem. "Microstructured optical fibre drawing with active channel pressurisation." Journal of Fluid Mechanics 783 (October 13, 2015): 137–65. http://dx.doi.org/10.1017/jfm.2015.570.

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The use of channel pressurisation in drawing microstructured optical fibres (MOFs) potentially allows for fine control of the internal structure of the fibre. By applying extra pressure inside the channels it is possible to counteract the effect of surface tension which would otherwise act to close the channels in the fibre as it is drawn. This paper extends the modelling approach of Stokes et al. (J. Fluid Mech., vol. 755, 2014, pp. 176–203) to include channel pressurisation. This approach treats the problem as two submodels for the flow, one in the axial direction along the fibre and another in the plane perpendicular to that direction. In the absence of channel pressurisation these models decoupled and were solved independently; we show that they become fully coupled when the internal channels are pressurised. The fundamental case of a fibre with an annular cross-section (containing one central channel) will be examined in detail. In doing this we consider both a forward problem to determine the shape of fibre from a known preform and an inverse problem to design a preform such that when drawn it will give a desired fibre geometry. Criteria on the pressure corresponding to fibre explosion and closure of the channel will be given that represent an improvement over similar criteria in the literature. A comparison between our model and a recent experiment is presented to demonstrate the effectiveness of the modelling approach. We make use of some recent work by Buchak et al. (J. Fluid Mech., vol. 778, 2015, pp. 5–38) to examine more complicated fibre geometries, where the cross-sectional shape of the internal channels is assumed to be elliptical and multiple channels are present. The examples presented here demonstrate the versatility of our modelling approach, where the subtleties of the interaction between surface tension and pressurisation can be revealed even for complex patterns of cross-sectional channels.
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Lin, Z.-C., C.-B. Yang, and K.-P. Lee. "Theoretical model for the hot-melt-drawn fabrication of optical fibre probes and analysis of fabrication parameters." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 225, no. 6 (May 25, 2011): 1431–41. http://dx.doi.org/10.1177/2041298310392850.

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Optical fibre probes made by manually operated hot-melt-drawn methods may have unreliable production quality. This can result in unreliable results during use of the probes. This article presents a theoretical model for the construction of optical fibre probes by a hot-melt-drawn method, intending to simulate the optical fibre melt-drawing process using the P-2000 Sutter melt-drawing installation, and investigates changes in length, radius, and geometric profile of the optical fibre. Using preset processing parameters, the study simulates the profile, size, and shape of an optical fibre probe, and the geometric shape and diameter of the probe tip. Additionally, the article presents an analysis of fabrication parameters to determine which of the three processing parameters, probe diameter, melt-drawing rate, and hard-drawn value, is most significant in determining the length and profile of a simulation model probe.
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Strnadová, Kateřina, Lukáš Stanislav, Ilona Krabicová, Filip Sabol, Jan Lukášek, Michal Řezanka, David Lukáš, and Věra Jenčová. "Drawn aligned polymer microfibres for tissue engineering." Journal of Industrial Textiles 50, no. 3 (January 15, 2019): 263–77. http://dx.doi.org/10.1177/1528083718825318.

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Oriented fibres and materials based on orientated fibres have great potential for use in tissue engineering for tissues, where the arrangement of extracellular matrix is fundamental. The drawing method is based on mechanical pulling of a polymer solution out of its base droplet, resulting in a solidified fibre of determined geometrical characteristics. A new machine designed for lab scale drawing was invented enabling a repeatable quality of drawing conditions. The results demonstrate that it is possible to influence and define the fibre diameter and its distribution. From the in vitro experiments, it is evident that the aligned fibres guide the cell growth in the direction of the fibres. Moreover, the prepared fibres were functionalised with polypyrrole as an example of their versatility. These features make drawing an easy and suitable tool for the fabrication of scaffolds with a precise structure for tissues, e.g. nerve tissue.
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Bogatyrjov, V. A., M. M. Bubnov, S. L. Semenov, and A. A. Sysoliatin. "Length-varying computer-controlled fibre drawing." Measurement Science and Technology 5, no. 11 (November 1, 1994): 1370–74. http://dx.doi.org/10.1088/0957-0233/5/11/009.

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Lyytik�inen, K., S. T. Huntington, A. L. G. Carter, P. McNamara, S. Fleming, J. Abramczyk, I. Kaplin, and G. Sch�tz. "Dopant diffusion during optical fibre drawing." Optics Express 12, no. 6 (2004): 972. http://dx.doi.org/10.1364/opex.12.000972.

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Sakaguchi, S., Y. Terunuma, Y. Ohishi, and T. Kanamori. "Fluoride fibre drawing with improved tensile strength." Journal of Materials Science Letters 6, no. 9 (September 1987): 1063–65. http://dx.doi.org/10.1007/bf01729133.

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Hucker, Martyn, Ian Bond, Andrew Foreman, and Jennifer Hudd. "Optimisation of Hollow Glass Fibres and their Composites." Advanced Composites Letters 8, no. 4 (July 1999): 096369359900800. http://dx.doi.org/10.1177/096369359900800406.

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Hollow glass fibre reinforced plastics have a structural performance niche in a class of their own. They offer increased flexural rigidity compared to solid glass fibre reinforced plastics, they offset the need for thin sandwich construction which is both difficult and expensive, and they provide an opportunity to develop laminates with improved or tailored characteristics. An experimental hollow glass fibre manufacturing facility is in operation at the University of Bristol. The facility is capable of drawing precision hollow glass fibres of various diameters with varying degrees of hollowness under precise parameter control. Hollow borosilicate glass fibres have been manufactured from tubular preforms with a variety of internal and external diameters, which correspond to a range of hollowness values. In all cases, the resulting hollowness was reduced from that present in the preform state, regardless of drawing rate or furnace temperature. In fact, temperature has been demonstrated to be of paramount importance in controlling fibre hollowness due to the interaction between glass viscosity and surface tension effects. These results suggest that for a given temperature and draw rate there is a single condition where fibre hollowness is maximised and external diameter minimised.
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Dissertations / Theses on the topic "Fibre drawing"

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Lyytik�inen, Katja Johanna. "Control of complex structural geometry in optical fibre drawing." University of Sydney. School of Physics and the Optical Fibre Technology Centre, 2004. http://hdl.handle.net/2123/597.

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Drawing of standard telecommunication-type optical fibres has been optimised in terms of optical and physical properties. Specialty fibres, however, typically have more complex dopant profiles. Designs with high dopant concentrations and multidoping are common, making control of the fabrication process particularly important. In photonic crystal fibres (PCF) the inclusion of air-structures imposes a new challenge for the drawing process. The aim of this study is to gain profound insight into the behaviour of complex optical fibre structures during the final fabrication step, fibre drawing. Two types of optical fibre, namely conventional silica fibres and PCFs, were studied. Germanium and fluorine diffusion during drawing was studied experimentally and a numerical analysis was performed of the effects of drawing parameters on diffusion. An experimental study of geometry control of PCFs during drawing was conducted with emphasis given to the control of hole size. The effects of the various drawing parameters and their suitability for controlling the air-structure was studied. The effect of air-structures on heat transfer in PCFs was studied using computational fluid dynamics techniques. Both germanium and fluorine were found to diffuse at high temperature and low draw speed. A diffusion coefficent for germanium was determined and simulations showed that most diffusion occurred in the neck-down region. Draw temperature and preform feed rate had a comparable effect on diffusion. The hole size in PCFs was shown to depend on the draw temperature, preform feed rate and the preform internal pressure. Pressure was shown to be the most promising parameter for on-line control of the hole size. Heat transfer simulations showed that the air-structure had a significant effect on the temperature profile of the structure. It was also shown that the preform heating time was either increased or reduced compared to a solid structure and depended on the air-fraction.
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Lyytikäinen, Katja Johanna. "Control of complex structural geometry in optical fibre drawing." Thesis, The University of Sydney, 2004. http://hdl.handle.net/2123/597.

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Drawing of standard telecommunication-type optical fibres has been optimised in terms of optical and physical properties. Specialty fibres, however, typically have more complex dopant profiles. Designs with high dopant concentrations and multidoping are common, making control of the fabrication process particularly important. In photonic crystal fibres (PCF) the inclusion of air-structures imposes a new challenge for the drawing process. The aim of this study is to gain profound insight into the behaviour of complex optical fibre structures during the final fabrication step, fibre drawing. Two types of optical fibre, namely conventional silica fibres and PCFs, were studied. Germanium and fluorine diffusion during drawing was studied experimentally and a numerical analysis was performed of the effects of drawing parameters on diffusion. An experimental study of geometry control of PCFs during drawing was conducted with emphasis given to the control of hole size. The effects of the various drawing parameters and their suitability for controlling the air-structure was studied. The effect of air-structures on heat transfer in PCFs was studied using computational fluid dynamics techniques. Both germanium and fluorine were found to diffuse at high temperature and low draw speed. A diffusion coefficent for germanium was determined and simulations showed that most diffusion occurred in the neck-down region. Draw temperature and preform feed rate had a comparable effect on diffusion. The hole size in PCFs was shown to depend on the draw temperature, preform feed rate and the preform internal pressure. Pressure was shown to be the most promising parameter for on-line control of the hole size. Heat transfer simulations showed that the air-structure had a significant effect on the temperature profile of the structure. It was also shown that the preform heating time was either increased or reduced compared to a solid structure and depended on the air-fraction.
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Callister, Richard D. C. "The in-situ manufacture of a metal-loaded, anisotropically conductive adhesive." Thesis, Brunel University, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.286803.

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Lyyttkäinen, Katja Johanna. "Control of complex structural geometry in optical fibre drawing /." Connect to full text, 2004. http://setis.library.usyd.edu.au/adt/public_html/adt-NU/public/adt-NU20041011.120247.

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Lyytikäinen, Katja Johanna. "Control of complex structural geometry in optical fibre drawing." Connect to full text, 2004. http://hdl.handle.net/2123/597.

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Thesis (Ph. D.)--University of Sydney, 2004.
Title from title screen (viewed 14 May 2008). Submitted in fulfilment of the requirements for the degree of Doctor of Philosophy to the School of Physics, Faculty of Science. Includes bibliographical references. Also available in print form.
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Shi, Hong. "Condition monitoring in the optical fibre drawing process through the use of neural networks." Thesis, Southampton Solent University, 1996. http://ssudl.solent.ac.uk/2422/.

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It is well understood that optical fibre quality can be affected by the conditions present during fibre drawing. fibre tension , drawing speed, furnace temperature, the atmosphere within the ddrawing zone, viscosity of the glass, pre-form neck down shape and vibration in the drawn fibre are all factors which may affect the drawing process, and consequently the properties of the optical fibre. Most of these factors can be affected by the behaviour of the drawing furnace. Therefor monitoring furnace condition and predicting furnace decay are very important to the optical fibre manufacturing process. However, furnace conditions are very complicated and cannot be described by traditional mathematical models. In order to implement condition monitoring more effectively, the effects of process parameters and vibrations on the porperties and geometry of germanium-doped silica-core single-mode fibre, the subject of the current study were investigated by experiments and literature survey. These results can be used to determine the optimum processing conditions and select feature parameters for a condition monitoring system. Sources of vibration were analysed in order to provide information on which subsequent work to minimise vibrations on the drawn fibre could be based. The feature parameters which relate to furnace decay were extracted from the selected drawing parameters and are presented in this thesis. A new non-contact tension measurement system was devised. Different kinds of neural networks and their application in the furnace condition monitoring systems were investigated and the results are reported. A neural network software with fast training speed and a data exchange interface was developed to meet the needs of this furnace monitoring system. This thesis oresents a novel on-line condition monitoring system for drawing furnaces in the optical fibre drawing process. This system utilises the feature parameters extracted from drawing parameters and a neural network as the learning and decision making component. It can monitor the performance of the drawing process and give a pre-warning when furnace decay occurs or drawing parameters exceed the allowed working range. Hence, fibre properties can be enhanced, the production yield can be improved and machine utilities can be increased. This system has been used on a production optical fibre drawing tower at Pirelli Cables Limited and a high success rate for recognising furnace condition was achieved.
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Alkoles, Omar M. S. "Mechanical behaviour and fracture toughness of unfilled and short fibre filled polypropylene both drawn and undrawn. Experimental investigation the effect of fibre content and draw ratio on the mechanical properties of unfilled and short glass fibre filled polypropylene." Thesis, University of Bradford, 2011. http://hdl.handle.net/10454/5510.

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The goal of this research is to investigate the combined effects of glass fibre reinforcement and molecular orientation in polypropylene-short glass fibre composites. Specimens have been fabricated using the injection moulding process and drawn using a small die drawing rig. The effects of die drawing on the fibre composites are complex, with the drawing process orienting both the polymer molecules and the glass fibres. This may be accompanied by the creation of voids in the polymer matrix and their destruction in the compressive stress field thus restoring the interfacial contact area between fibre and matrix. Unfilled and short glass fibre filled polypropylene specimens, with fibre content 7% wt, 13%wt, 27%wt, and 55%wt, were injection moulded prior to the die drawing process. An experimental program of die drawing within an oven at elevated temperature was conducted for polypropylene filled to various levels and at different strain rates. The specimens drew to draw ratios in the range ¿=1.41 to ¿=5.6. Mechanical characterization of the test materials has been conducted by examining the tensile stress strain and fracture behaviour under uniaxial conditions. The influence of glass fibre content and drawing conditions (draw ratio) on the fracture toughness and crack propagation was investigated using the double edge notched fracture test. The notch lengths ranged from 1.5 to 2.5 mm for 10 mm wide specimens. The critical stress intensity factor increased as the fibre content increased up to a limiting filler level. The fracture toughness of both unfilled and fibre filled polypropylene were found to be highly dependent on draw ratio. The results were analysed to find out the optimal draw ratio and fibre content that yielded the maximum modulus, strength and fracture toughness. Data showed that, at a given draw ratio, modulus, strength and fracture toughness increased with increasing fibre content to a maximum and then decreased. The optimum material was obtained at a draw ratio of 2.5 and filler loading 13wt%.
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Walker, Trevor John. "The use of primitives in the calculation of radiative view factors." Thesis, The University of Sydney, 2013. http://hdl.handle.net/2123/10275.

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Compilations of radiative view factors (often in closed analytical form) are readily available in the open literature for commonly encountered geometries. For more complex three-dimensional (3D) scenarios, however, the effort required to solve the requisite multi-dimensional integrations needed to estimate a required view factor can be daunting to say the least. In such cases, a combination of finite element methods (where the geometry in question is sub-divided into a large number of uniform, often triangular, elements) and Monte Carlo Ray Tracing (MC-RT) has been developed, although frequently the software implementation is suitable only for a limited set of geometrical scenarios. Driven initially by a need to calculate the radiative heat transfer occurring within an operational fibre-drawing furnace, this research set out to examine options whereby MC-RT could be used to cost-effectively calculate any generic 3D radiative view factor using current vectorisation technologies.
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Bam, T. J. "A computer-based justification for using the simple bend test as the basis for predicting the performance of steel hooked-end fibres in reinforced concrete." Diss., University of Pretoria, 2019. http://hdl.handle.net/2263/75657.

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The classical test to confirm the performance of a given fibre design for use in reinforced concrete is the pull-out test. While attempts have been made to simulate the performance of such pull-out tests, in practice it has been found that there is a significant disparity between prediction and real-life performance. The high strength of steel reinforcing fibres is a consequence of the cold wire drawing process and subsequent fabrication. Residual stresses exist in cold drawn wire as a consequence of the elastic response to a non-uniform distribution of plastic strain. This also introduces a yield strength profile where yield strength varies radially through the wire. The question arises as to whether fibre design should use a starting material model that considers these properties. This thesis examines whether the tensile test, simple bend test and pull-out test provide enough information to define a starting material model that may be used for further design and simulation of such fibres. Since the details of the wire drawing process and material specification are proprietary and therefore unknown, a sensitivity study was conducted to determine which aspects of the wire drawing process have the greatest effect on the pull-out curve and the following were established as being significant: • Plastic strain due to wire drawing was shown to be the most important factor. • The bilinear curve was shown to be a suitable approximation for the stress-strain curve. • Replacing the plastic strain profile with a single value of average equivalent plastic strain is practical. The following were established as having negligible effect: • The consequences of the hooked-end forming process. • The residual stress profiles due to wire drawing provided that the above was also excluded. • The hardening law While inverse analysis demonstrated that all tests provide sufficient information to determine the required properties for this bilinear material model, the pull-out test was shown to provide more accurate approximations of the maximum pull-out force at the first and second peaks and the bend test was shown to produce more accurate approximations of the energy associated with pull-out. Good correlation with the baseline pull-out curve was found for both the isotropic and the kinematic hardening laws and it is concluded that behaviour during pull-out is insensitive to the hardening law. Sensitivity analysis and characterisation of the material model using an experimental pull-out curve demonstrated the importance of the coefficient of friction. Full characterisation using the pull-out curve therefore requires the solution to a three-variable problem: yield strength, tangent modulus and coefficient of friction. This was a suggested topic for further study.
Dissertation (MEng)--University of Pretoria, 2019.
Mechanical and Aeronautical Engineering
MEng (Mech)
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10

Alkoles, Omar M. "Mechanical behaviour and fracture toughness of unfilled and short fibre filled polypropylene both drawn and undrawn : experimental investigation of the effect of fibre content and draw ratio on the mechanical properties of unfilled and short glass fibre filled polypropylene." Thesis, University of Bradford, 2011. http://hdl.handle.net/10454/5510.

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The goal of this research is to investigate the combined effects of glass fibre reinforcement and molecular orientation in polypropylene-short glass fibre composites. Specimens have been fabricated using the injection moulding process and drawn using a small die drawing rig. The effects of die drawing on the fibre composites are complex, with the drawing process orienting both the polymer molecules and the glass fibres. This may be accompanied by the creation of voids in the polymer matrix and their destruction in the compressive stress field thus restoring the interfacial contact area between fibre and matrix. Unfilled and short glass fibre filled polypropylene specimens, with fibre content 7% wt, 13%wt, 27%wt, and 55%wt, were injection moulded prior to the die drawing process. An experimental program of die drawing within an oven at elevated temperature was conducted for polypropylene filled to various levels and at different strain rates. The specimens drew to draw ratios in the range γ=1.41 to γ=5.6. Mechanical characterization of the test materials has been conducted by examining the tensile stress strain and fracture behaviour under uniaxial conditions. The influence of glass fibre content and drawing conditions (draw ratio) on the fracture toughness and crack propagation was investigated using the double edge notched fracture test. The notch lengths ranged from 1.5 to 2.5 mm for 10 mm wide specimens. The critical stress intensity factor increased as the fibre content increased up to a limiting filler level. The fracture toughness of both unfilled and fibre filled polypropylene were found to be highly dependent on draw ratio. The results were analysed to find out the optimal draw ratio and fibre content that yielded the maximum modulus, strength and fracture toughness. Data showed that, at a given draw ratio, modulus, strength and fracture toughness increased with increasing fibre content to a maximum and then decreased. The optimum material was obtained at a draw ratio of 2.5 and filler loading 13wt%.
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Books on the topic "Fibre drawing"

1

Chen, P. Y. P. Computer simulation of fluoride glass fibre drawing. [Sydney, Australia]: School of Mechanical and Industrial Engineering, University of New South Wales, 1987.

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Drawing fire: Poems. London, Ont., Canada: Third Eye, 1991.

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Let's draw a fire truck with shapes =: Vamos a dibujar un camión de bomberos usando figuras. New York: PowerStart Press & Editorial Buenas Letras, 2005.

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Scrace, Carolyn. Zen doodling inspiration: Earth, air, fire, and water. Hauppauge, New York: Barron's Educational Series, Inc., 2015.

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Combs, Paul. Drawn by fire: Fire service editorial cartoons. Tulsa, Okla: PennWell Corp., 2010.

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Phạm, Thanh Tam. Drawing under fire: Diary of a young Vietnamese artist. London: Asia Ink, 2004.

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Randolph, Joanne. Let's draw a fire truck with shapes. New York: PowerStart Press, 2005.

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Sherry, Buchanan, ed. Drawing under fire: War diary of a young Vietnamese artist. London: Asia Ink, 2005.

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Drawing fire: The diary of a Great War soldier and artist. London: Collins, 2009.

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Brodie, Howard. Drawing fire: A combat artist at war : Pacific, Europe, Korea, Indochina, Vietnam. Los Altos, Calif: Portolá Press, 1996.

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Book chapters on the topic "Fibre drawing"

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Sengupta, A. K. "Drawing of melt-spun fibres." In Manufactured Fibre Technology, 170–87. Dordrecht: Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-011-5854-1_8.

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Weik, Martin H. "optical fiber drawing." In Computer Science and Communications Dictionary, 1169. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_13015.

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Behrens, Bernd-Arno, Alexander Chugreev, and Hendrik Wester. "Experimental and Numerical Investigations on the Combined Forming Behaviour of DX51 and Fibre Reinforced Thermoplastics Under Deep Drawing Conditions." In Virtual Design and Validation, 123–46. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-38156-1_7.

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Weik, Martin H. "optical fiber drawing machine." In Computer Science and Communications Dictionary, 1169. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_13016.

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Mitchell, Charles F. "Fire-Resisting Construction." In Building Construction and Drawing 1906, 482–501. 4th ed. London: Routledge, 2022. http://dx.doi.org/10.1201/9781003261674-10.

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Chen, Ming, Zhixun Wang, and Ke He. "Nano- and Micro-structuring of Materials Using Polymer Cold Drawing Process." In Advanced Fiber Sensing Technologies, 217–39. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-5507-7_12.

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Weik, Martin H. "drawn glass optical fiber." In Computer Science and Communications Dictionary, 461. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_5601.

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Ma, Zeyu, Yan Hong, Shujiang Ding, Minghui Zhang, Mainul Hossain, and Ming Su. "Three-Dimensional Micro/Nanomaterials Generated by Fiber-Drawing Nanomanufacturing." In Three-Dimensional Nanoarchitectures, 117–32. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-9822-4_5.

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Rekhson, Simon, Jim Leonard, and Phillip Sanger. "Attenuation and Breakage in the Continuous Glass Fiber Drawing Process." In 64th Conference on Glass Problems: Ceramic Engineering and Science Proceedings, Volume 25, Issue 1, 179–90. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2008. http://dx.doi.org/10.1002/9780470294857.ch13.

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Qin, Y., M. M. Miller, D. L. Brydon, J. M. G. Cowie, R. R. Mather, and R. H. Wardman. "Fiber Drawing from Blends of Polypropylene and Liquid-Crystalline Polymers." In ACS Symposium Series, 98–109. Washington, DC: American Chemical Society, 1996. http://dx.doi.org/10.1021/bk-1996-0632.ch007.

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Conference papers on the topic "Fibre drawing"

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Fleming, S., A. Stefani, J. Hayashi, and B. Kuhlmey. "Metamaterials Fabricated by Fibre Drawing." In 2018 23rd Opto-Electronics and Communications Conference (OECC). IEEE, 2018. http://dx.doi.org/10.1109/oecc.2018.8730125.

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Lyytika¨inen, Katja, Peter Ra˚back, and Juha Ruokolainen. "Numerical Simulation of a Specialty Optical Fibre Drawing Process." In ASME 2002 Pressure Vessels and Piping Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/pvp2002-1598.

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The present study investigates the mass and heat transfer in the optical fibre fabrication process where a specialty optical preform with a non-homogeneous cross-sectional structure is drawn into a fibre. A finite element method was used to model the steady state fibre drawing process. The model included free surface calculation of the neck-down shape of the preform coupled with a two-dimensional heat transfer equation. The enclosure model was used for the radiation heat transfer. In addition to the silica preform the model took into account the graphite-resistance furnace structure and the inert gas surrounding the preform. Fibre designs with axisymmetric cross-sections with radial variations in material properties were modeled, including air silica structures. The effect of internal air structures was found to have a significant impact on temperature distribution. The effects of drawing parameters such as draw speed, preform diameter, draw temperature and furnace structure were also studied.
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Lwin, Richard, Geoff Barton, Maryanne Large, Leon Poladian, Roger Tanner, and Shicheng Xue. "Validating the Rheological Changes during the Fibre Drawing of Microstructured Optical Fibres." In 2006 32nd European Conference on Optical Communications - (ECOC 2006). IEEE, 2006. http://dx.doi.org/10.1109/ecoc.2006.4801200.

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Kaufman, Joshua J., Christopher Bow, Felix A. Tan, Alexander M. Cole, and Ayman F. Abouraddy. "3D Printing Preforms for Fiber Drawing and Structured Functional Particle Production." In Australian Conference on Optical Fibre Technology. Washington, D.C.: OSA, 2016. http://dx.doi.org/10.1364/acoft.2016.aw4c.1.

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Behera, Ramesh. "Modeling of Helium Cooling Tube in Optical Fiber Drawing Tower." In International Conference on Fibre Optics and Photonics. Washington, D.C.: OSA, 2012. http://dx.doi.org/10.1364/photonics.2012.wpo.26.

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Kaufman, Joshua J., Guangming Tao, Soroush Shabahang, and Ayman F. Abouraddy. "Thermal Drawing of High-Density In-fiber Arrays of Well-Ordered 5-nm-Diameter Nanowires." In Australian Conference on Optical Fibre Technology. Washington, D.C.: OSA, 2016. http://dx.doi.org/10.1364/acoft.2016.ath2c.2.

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Harhash, M. "Warm forming of thermoplastic fibre metal laminates." In Sheet Metal 2023. Materials Research Forum LLC, 2023. http://dx.doi.org/10.21741/9781644902417-54.

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Abstract. In this paper, the forming behaviour of sheet-like metal/polymer/metal (MPM) and thermoplastic fibre metal laminates (TFMLs) is introduced. TFMLs are based on thin metallic cover sheets and fibre-reinforced thermoplastic matrix (here polyamide 6). With this material combination, the specific mechanical, structural, thermal and acoustic properties can be improved and designed compared to the monomaterials and laminates without fibre reinforcements. However, the restricted formability of TFMLs at room temperature is a strong limitation. Therefore, the approach of this study is concerned with the fundamental description of the influence of warm forming on the degree of the forming improvement of pre-bonded TFMLs sheets experimentally via the investigation of the deep drawability and determining the forming limit curves compared to the formability of steel and MPM sheets. Two elevated test temperatures (200 and 235 °C) besides the room temperature are considered. The results of this approach revealed that warm forming could lead to over 300 % improvement of the forming limit curve (FLC) level of TFML; however, an ignorable difference between 200 and 235 °C is found. For steel and MPM sheets, increasing the temperature showed a slight improvement. Regarding deep drawing, similar results like for FLC were found, where the drawing depth of TFML could be increased from approx. 15 mm up to at least 40 mm before cracking. However, other failure types arose like wrinkling and core squeezing-out. Therefore, a one-step deep drawing approach for TFMLs is foreseen, where the adhesion and forming processes take place simultaneously.
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Guzman, Fernando, Andrea Ravagli, Christopher Craig, Bruno Moog, and Daniel W. Hewak. "Fabrication of Structured GLS-Se Glass Preforms by Extrusion for Fibre Drawing." In Frontiers in Optics. Washington, D.C.: OSA, 2019. http://dx.doi.org/10.1364/fio.2019.jw4a.11.

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Davies, Peter, Patrice Baron, Karine Salomon, Charles Bideaud, J. P. Labbe´, Ste´phane Toumit, Michel Francois, Francois Grosjean, Tony Bunsell, and A. G. Moysan. "Influence of Fibre Stiffness on Deepwater Mooring Line Response." In ASME 2008 27th International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2008. http://dx.doi.org/10.1115/omae2008-57147.

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Polyester fibre ropes are now an accepted solution for deepwater mooring of production platforms and a single high tenacity fibre grade is widely used. Few studies of other fibres have been reported but polyesters can be produced with a range of properties by varying drawing parameters, and other stiffer fibres are also available. This paper presents a study of these alternative fibre rope solutions, performed within the French Mooring Line project. First, in order to obtain the input data necessary for mooring line analyses an extensive test program was performed to characterize polyester, improved polyester, PEN, LCP, aramid and HMPE fibre ropes from yarns up to 800 ton break load ropes. Tests at different scales have allowed property transfer to be quantified. Rope modelling has been used in parallel to examine the influence of material and structural parameters. Then, using these data, a series of analyses was run by engineering contractors, which quantified the benefits of higher stiffness for different supports (semi-submersible, production platform and offloading buoy) down to 2500 meter depth. Under certain conditions the stiffer ropes can result in significantly reduced rope diameter and weight.
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RUZAIĶE, Aija, Sandra MUIŽNIECE-BRASAVA, Zanda KRŪMA, and Kaspars KOVAĻENKO. "NUTRITIONAL VALUE DETERMINATION OF THERMALLY PROCESSED POTATO MAIN COURSE IN RETORT PACKAGING." In RURAL DEVELOPMENT. Aleksandras Stulginskis University, 2018. http://dx.doi.org/10.15544/rd.2017.078.

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Consumers are increasingly demanding choices of ready-made foods with excellent organoleptic and health-related properties. There are two main trends in Europe; firstly, consumers are increasingly choosing foods that are comfortable for use, secondly, the number of people who are overweight is increasing, with more consumers paying close attention to the ingredients and nutritional value of products in order to balance the amount of the food they consume per day. The aim of the research was to develop new potato main courses and to determine their nutritional value. The research was carried out at the Faculty of Food Technology of the Latvia University of Agriculture, Institute of Food Safety, Animal Health and Environment "BIOR" and Laboratory of Mineral Nutrition at the Institute of Biology of the University of Latvia. Four different potato main course types with amaranth, quinoa, bulgur and chicken were prepared for the study; plain potatoes were used as the control sample. The content of protein, carbohydrates, lipids, fibre and minerals (N, P, K, Ca, Mg, S, Fe, Mn, Zn, Cu, Mo, B) was determined in all potato main course samples. The addition of amaranth, quinoa and bulgur significantly increased the content of dietary fibre, protein, carbohydrates and lipids (p<0.05), whereas the addition of chicken fillet significantly increased protein and lipid content, but reduced the content of carbohydrates and dietary fibre. The content of various minerals, which are an indispensable part of the diet as they are necessary for the body's life processes and normal development, was significantly increased by the addition of chicken to the potato main course. The highest dietary fibre content was detected in potato main course with amaranth (3.0 g per 100 g product), drawing up to 9.0 g dietary fibre per one serving (300 g). Following the Regulation (EC) No 1924/2006, potatoes with amaranth can be defined as the “source of fibre”.
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Reports on the topic "Fibre drawing"

1

Smith, W. L. Automated glass fiber drawing. Office of Scientific and Technical Information (OSTI), September 1989. http://dx.doi.org/10.2172/5524774.

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Rekhson, Simon, James Leonard, Zhongzhouh Chen, Umashankar Sistu, Akash Shah, Koromia Muthoni, Richard Bartel, and Sanger Phillip. Process Design of Glass Fiber Drawing Combining Physics, Statistics, and Validation. Office of Scientific and Technical Information (OSTI), May 2009. http://dx.doi.org/10.2172/951888.

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Kerber, Steve, and Robin Zevotek. Fire Service Summary Report: Study of Residential Attic Fire Mitigation Tactics and Exterior Fire Spread Hazards on Firefighter Safety. UL Firefighter Safety Research Institute, November 2014. http://dx.doi.org/10.54206/102376/pxtq2256.

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Attic fires pose many hazards for the fire service. When a fire occurs in an attic, it is common it goes unnoticed/reported until smoke or flames are visible from the outside of the structure. Because they take longer to detect, attic fires are more dangerous for firefighters and residents. In a fire situation, the attic ventilation system, which is designed to reduce moisture accumulation by drawing fresh air low from the eaves and exhausting moisture laden warm air near the peak, create an optimal fire growth and spread situation by supplying oxygen to the fire and exhausting hot gases. An estimated 10,000 residential attic fires are reported to U.S. fire departments each year and cause an estimated 30 civilian deaths, 125 civilian injuries and $477 million in property loss. The location of the attic creates several difficulties for the fire service. Firefighters must decide whether to fight the fire from inside the structure, from the outside or a combination of the two. This the decision is complicated by the constant hazard of ceiling collapse, which has the potential to rapidly deteriorate conditions in the living spaces. A piece of gypsum board may fall or be pulled from the ceiling making the relatively clear and cool conditions in the living space change very quickly endangering firefighters executing a search and rescue operation as part of their life safety mission. Further complicating the decision are the hazards associated with roof structure collapse, creating deadly conditions for firefighters operating on and under the roof. Structural collapse accounted for 180 firefighter deaths between 1979 and 2002 of which one-third occurred in residential structures . Many of these incidents involved a roof falling on firefighters or firefighters falling through the roof during firefighting operations on attic fires. The purpose of this study is to increase firefighter safety by providing the fire service with scientific knowledge on the dynamics of attic and exterior fires and the influence of coordinated fire mitigation tactics from full-scale fire testing in realistic residential structures.
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4

Kerber, Steve, and Robin Zevotek. Study of Residential Attic Fire Mitigation Tactics and Exterior Fire Spread Hazards on Firefighter Safety Released. UL Firefighter Safety Research Institute, November 2014. http://dx.doi.org/10.54206/102376/lihb1439.

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Attic fires pose many hazards for the fire service. When a fire occurs in an attic, it is common it goes unnoticed/reported until smoke or flames are visible from the outside of the structure. Because they take longer to detect, attic fires are more dangerous for firefighters and residents. In a fire situation, the attic ventilation system, which is designed to reduce moisture accumulation by drawing fresh air low from the eaves and exhausting moisture laden warm air near the peak, create an optimal fire growth and spread situation by supplying oxygen to the fire and exhausting hot gases. An estimated 10,000 residential attic fires are reported to U.S. fire departments each year and cause an estimated 30 civilian deaths, 125 civilian injuries and $477 million in property loss. The location of the attic creates several difficulties for the fire service. Firefighters must decide whether to fight the fire from inside the structure, from the outside or a combination of the two. This the decision is complicated by the constant hazard of ceiling collapse, which has the potential to rapidly deteriorate conditions in the living spaces. A piece of gypsum board may fall or be pulled from the ceiling making the relatively clear and cool conditions in the living space change very quickly endangering firefighters executing a search and rescue operation as part of their life safety mission. Further complicating the decision are the hazards associated with roof structure collapse, creating deadly conditions for firefighters operating on and under the roof. Structural collapse accounted for 180 firefighter deaths between 1979 and 2002 of which one-third occurred in residential structures . Many of these incidents involved a roof falling on firefighters or firefighters falling through the roof during firefighting operations on attic fires. The purpose of this study is to increase firefighter safety by providing the fire service with scientific knowledge on the dynamics of attic and exterior fires and the influence of coordinated fire mitigation tactics from full-scale fire testing in realistic residential structures.
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Regan, Jack, and Robin Zevotek. Evaluation of the Thermal Conditions and Smoke Obscuration of Live Fire Training Fuel Packages. UL Firefighter Safety Research Institute, March 2019. http://dx.doi.org/10.54206/102376/karu4002.

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Firefighters routinely conduct live fire training in an effort to prepare themselves for the challenges of the fire ground. While conducting realistic live fire training is important, it also carries inherent risks. This is highlighted by several live fire training incidents in which an inappropriate fuel load contributed to the death of participants. NFPA 1403: Standard on Live Fire Training Evolutions was first established in response to a live fire training incident in which several firefighters died. Among the stipulations in NFPA 1403 is that the fuel load shall be composed of wood-based fuels. The challenge of balancing safety with fidelity has led instructors to explore a variety of different methods to create more realistic training conditions. A series of experiments was conducted in order to characterize common training fuels, compare these training fuels to furnishings, and examine the performance of these training fuels in a metal container prop. Heat release rate (HRR) characterization of training fuels indicated that wood-based training fuels had a constant effective heat of combustion. Depending on the method used, this value was between 13.6 and 13.9 MJ/kg. This indicates that, even in engineered wood products, wood is the primary material responsible for combustion. In order to further explore the conclusions from the HRR testing, additional experiments were conducted in an L-shaped metal training prop. The results of these experiments highlighted a number of considerations for firefighter training. Thermal conditions consistent with “realistic fires” could be produced using NFPA 1403 compliant fuels, and in fact the thermal conditions produced by larger wood-based fuel packages were more severe than those produced by fuel packages with a small amount of synthetic fuel. The fuel package used in training evolutions should reflect the training prop or building being used, the available ventilation, and the intended lesson. Fuel load weight and orientation are both important considerations when designing a fuel package. The training considerations drawn from this report will help to increase firefighters’ understanding of fire dynamics, and help instructors better understand fuel packages and the fire dynamics that they produce.
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PARSONS ENGINEERING SCIENCE INC NORCROSS GA. Operations and Maintenance Manual, Record Drawings, and Summary of Initial Results for the Expanded Bioventing System Installed at the Eglin Main Base Old Fire Training Area, Eglin Air Force Base, Florida. Fort Belvoir, VA: Defense Technical Information Center, June 1998. http://dx.doi.org/10.21236/ada384512.

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