Relevant bibliographies by topics / Testing fibres

Contents

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

Academic literature on the topic 'Testing fibres'

Author: Grafiati
Published: 4 June 2021
Last updated: 6 February 2022

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Journal articles on the topic "Testing fibres"

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Swiderski. "CFRP Non-Destructive Testing Using IR Thermography Methods." Proceedings 27, no. 1 (September 25, 2019): 30. http://dx.doi.org/10.3390/proceedings2019027030.

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Multilayer composites reinforced fibres are often used in military applications as construction materials for lightweight ballistic covers that protect against fragments and projectiles. The basic fibre used in these applications is aramid fibre, but research is also conducted using carbon fibres. One of the many methods used in non-destructive testing of composites is active infrared thermography, in which different types of sources can be used to thermally stimulate the material being tested. This paper compares the results obtained with various methods of thermal stimulation in the study of samples made with CFRP with deliberately introduced defects and destructive tests.
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Hyie, Koay Mei, Noor Haznida Bakar, Ridzuan Jazlan, A. Jumahat, and Anizah Kalam. "The Compressive Properties of Kevlar/Kenaf Hybrid Composites." Applied Mechanics and Materials 763 (May 2015): 19–24. http://dx.doi.org/10.4028/www.scientific.net/amm.763.19.

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Natural fibres are aimed to replace or at least to reduce the dependence of the industrial sector against low degradability of raw material. Hence, this study is performed to investigate the effect of stacking sequence and fibre orientation on the compressive properties of Kevlar/kenaf hybrid composites. Previous study suggested that treated kenaf fibres improved the fibre’s properties. Therefore, kenaf fibres was treated with NaOH of 6% concentration for 12 hours before rinsed and dried to be used in this study. The stacking sequence was varied for different weight percentage of woven Kevlar from 0 wt% to 23 wt%, while the kenaf fibres were arranged at 0° and 90° orientation, respectively. The compressive properties of the Kevlar/kenaf fibre hybrid composites were investigated using Instron Universal Testing Machine (ASTM standard D3410M). Stereo-zoom was used to identify the fibre orientation and the bonding between the fibres and matrix. For stacking sequence, the study showed that the arrangement of kenaf fibres on the middle part, “sandwiched” between Kevlar on the outer part, gave the best compressive performance. The sample in 0° orientation exhibited better compressive strength and modulus than 90° orientation. The outcome of this research has shown significant increase of compressive strength with the addition of kenaf fibre replacing the Kevlar.
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Shalwan, A., S. Oraby, and A. Alaskari. "Mathematical Modelling of the Interfacial Adhesion of Date Palm/Epoxy." Journal of Materials Science Research 5, no. 3 (April 20, 2016): 29. http://dx.doi.org/10.5539/jmsr.v5n3p29.

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<p class="1Body">In recent years, high interests has emerged to use natural fibres as alternative reinforcements synthetic due to its unique benefits regarding renewability, recyclability, degradability, lightweight, and low cost. Recent investigations revealed that the mechanical performance of fibre reinforced polymer composites (FRPCs) is predicated mainly on the interfacial adhesion of fibre with the matrices. In the current work, an empirical approach was exploited to develop mathematical models using linear regression routines available in SPSS IBM program. Such models are established to determine the functional interrelations between, each of the fibres diameters and the percentage of chemical treatment, as independent or response variables, and the interfacial bonding between the DPF and Epoxy resin. Both single fibre tensile testing (SFTT) and single fibre fragmentation testing (SFFT) are considered to study the interfacial adhesion of fibre with matrix and to reflect the real loading conditions. Such testing procedures are carried out for Date Palm Fibres (DPFs) and Date palm fibre reinforced Epoxy composites (DPFEs) with different fibre diameter (0.3-0.7 mm) under different NaOH concentrations (0-9 wt.%). Experimental testing results indicated that the optimum interfacial adhesion and strength of the fibre can be achieved with small fibre diameter when 6 wt. % NaOH concentrations is employed. The use of higher NaOH concentration generally leads to deterioration in the fibre strength. Developed models, on one hand, proved to have the capability to qualitatively and quantitatively grasp the true relationships and, on the other hand, to emphasize the high potential to utilize natural fibres as a replacement of synthetic fibres with affirmation taking into consideration the role of diameter size and chemical treatment of fibres to reach the optimum mechanical behaviour of NFRPCs.</p>
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Fládr, Josef, and Iva Broukalová. "Testing the Long-Term Flexural Behaviour of FRC with Synthetic Fibres." Advanced Materials Research 1106 (June 2015): 136–39. http://dx.doi.org/10.4028/www.scientific.net/amr.1106.136.

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The paper describes a new methodology of investigation of long-term behaviour of fibre reinforced concrete (FRC) with of synthetic fibres. A set of tests was manufactured from FRC with synthetic fibres commonly used for production of FRC and referential set from SFRC (steel fibre reinforced concrete) and subjected to long-term loading. The testing is based on three-point flexural loading. In given time intervals deflections are measured and recorded. Results of investigations are presented and discussed.
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Adusumalli, Ramesh Babu, Karthik Chethan Venkateshan, Chandrakala Kunchi, and Surya R. Vadlamani. "Tensile testing of single fibres." Procedia Structural Integrity 14 (2019): 150–57. http://dx.doi.org/10.1016/j.prostr.2019.05.020.

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Künzel, Karel, Václav Papež, Kristýna Carrera, Petr Konrád, Michal Mára, Přemysl Kheml, and Radoslav Sovják. "Electromagnetic Properties of Steel Fibres for Use in Cementitious Composites, Fibre Detection and Non-Destructive Testing." Materials 14, no. 9 (April 22, 2021): 2131. http://dx.doi.org/10.3390/ma14092131.

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This paper deals with the description, measurement, and use of electromagnetic properties of ferromagnetic fibres used as dispersed fibre reinforcement in composite mixtures. Firstly, the fibres’ magnetic properties are shown, and a method of measuring the hysteresis loop of fibres is proposed. The results from the measurements are presented and a discussion of the influence of measured parameters on the fibres’ orientation in a magnetic field is performed. Furthermore, methods of non-destructive estimation, of their amount and orientation in the composite specimens, are discussed. The main experimental goal of this paper is to show the relationship between this non-destructive method’s results and the destructive flexural strength measurements. The method is sensitive enough to provide information related to fibre reinforcement.
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Kuclourya, Tanay, Mohit Kumar Jain, Shubham Mudliar, and Narendiranath Babu Thamba. "Statistical analysis and investigation of tensile test data of coir composites reinforced with graphene, epoxy and carbon fibre." Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications 234, no. 10 (July 15, 2020): 1343–54. http://dx.doi.org/10.1177/1464420720939998.

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A successful attempt has been made to develop coir fibre composites reinforced with graphene, epoxy and carbon fibre. The carbon fibres were arranged in an intercalated manner, which is similar to the coir fibres. The percentage composition of graphene was varied as 1, 2, 4 and 6% by weight of the holding matrix. Suitable surface modifications were done by treating natural fibres by 5% NaOH and 0.3% KMnO4 for better adhesion of fibre and epoxy resin. Sonication and cetyl trimethyl ammonium bromide treatments were also done to achieve the fine scattering of graphene in the epoxy matrix in order to achieve better mechanical behaviour. Moulds were made as per D638 American Society for Testing and Materials (ASTM) standards. The treated fibres were then arranged in the mould by the conventional hand layup technique. Tensile testing was carried out to determine the mechanical properties of the composites. Two-way analysis of variance was used as a statistical tool to find the effect of parameters such as ‘Percentage composition of graphene’ and ‘Type of mould’ on the modulus of the composites. Fourier transform infrared spectroscopy was conducted to determine the interferential adhesion and homogeneous distribution of fibres in the composite matrix. At last, field emission scanning electron microscopy analyses were also done to the specimens before and after tensile testing to determine the morphology of different entities present in the composites.
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Schledjewski, Ralf, Luisa Medina, and Alois K. Schlarb. "Mechanical and Morphological Characterization of Selected Natural Fibres." Advanced Composites Letters 15, no. 2 (March 2006): 096369350601500. http://dx.doi.org/10.1177/096369350601500202.

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The present work aims to characterize the morphological and mechanical properties of hemp and kenaf fibres. The mechanical properties of natural fibres highly depend on many factors like soil, growth conditions, harvest time or fibre treatment. Since the mechanical properties of the composite are highly conditioned by the characteristics of the fibres, a comprehensive study of the mechanical properties of the fibres is required in order to optimize the composite's properties. The fibres were characterized by single fibre tensile testing. Due to the high standard deviation of the measurements, the tensile strength data were statistically assessed. To describe strength data the Weibull distribution function was used. It has been assumed that the fracture stresses of natural fibres are distributed according to the two-parametric Weibull distribution.
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Islam, Faisal, Sébastien Joannès, Steve Bucknell, Yann Leray, Anthony Bunsell, and Lucien Laiarinandrasana. "Investigation of tensile strength and dimensional variation of T700 carbon fibres using an improved experimental setup." Journal of Reinforced Plastics and Composites 39, no. 3-4 (September 24, 2019): 144–62. http://dx.doi.org/10.1177/0731684419873712.

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Knowledge of fibre strength is crucial for understanding the failure behaviour of fibre-reinforced composite materials and structures. Measuring the properties of technical fibres has been known to be very challenging, and the different challenges associated with single fibre characterisation are illustrated in this article. An improved and automated experimental methodology for tensile testing of single fibres is described. This process has been used to generate fibre strength data for T700 carbon fibres at three different gauge lengths of 4, 20 and 30 mm. The variability in strength and modulus of short fibres was found to be much larger than that of longer fibres. Statistical analysis of this large data set has also highlighted the limitations of the standard Weibull distribution for representing fibre strength behaviour. The need for a better statistical representation of the fibre strength data in order to provide a more accurate description of the fibre strength behaviour has been emphasized.
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Drdlová, Martina, Oldřich Sviták, and Vladan Prachař. "Slurry Infiltrated Fibre Concrete with Waste Steel Fibres from Tires - The Behaviour under Static and Dynamic Load." Materials Science Forum 908 (October 2017): 76–82. http://dx.doi.org/10.4028/www.scientific.net/msf.908.76.

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Waste fibres coming from the recycling process of the old tires were incorporated in slurry infiltrated fibre concrete (SIFCON), which is a special type of high performance fibre reinforced concrete with high fibre content. The technological feasibility (i.e. suitability of the waste fibres for SIFCON technology) was assessed using infiltration test and homogeneity test. Test specimens were prepared with three volume fractions (5; 7.5 and 10% by vol.) of waste unclassified fibres. SIFCON with industrial steel fibres (10% by vol.) and high performance fibre concrete with industrial fibres were also cast and tested for comparison purposes. Quasi-static mechanical properties were determined. The impact test was carried out by using an in-house manufactured impact testing machine based on drop test principle. Realized tests confirmed the possibility of using the waste fibres for SIFCON technology. The obtained results indicate, that the usage of waste fibres does not significantly reduce the values of SIFCON flexural and compressive strength at quasi-static load and energy absorption at dynamic load, the values were comparable to the specimens with industrially produced fibres. With increasing fibre content, the mechanical parameters and energy-absorption characteristics at dynamic load are increasing as well.
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Dissertations / Theses on the topic "Testing fibres"

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Zhang, Yuping, and mikewood@deakin edu au. "The Tensile behaviour of non-uniform fibres and fibrous composites." Deakin University. School of Engineering and Technology, 2001. http://tux.lib.deakin.edu.au./adt-VDU/public/adt-VDU20051017.143549.

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This work investigates the tensile behaviour of non-uniform fibres and fibrous composites. Wool fibres are used as an example of non-uniform fibres because they're physical, morphological and geometrical properties vary greatly not only between fibres but also within a fibre. The focus of this work is on the effect of both between-fibre and within-fibre diameter variations on fibre tensile behaviour. In addition, fit to the Weibull distribution by the non-brittle and non-uniform visco-elastic wool fibres is examined, and the Weibull model is developed further for non-uniform fibres with diameter variation along the fibre length. A novel model fibre composite is introduced to facilitate the investigation into the tensile behaviour of fibre-reinforced composites. This work first confirms that for processed wool, its coefficient of variation in break force can be predicted from that of minimum fibre diameters, and the prediction is better for longer fibres. This implies that even for processed wool, fibre breakage is closely associated with the occurrence of thin sections along a fibre, and damage to fibres during processing is not the main cause of fibre breakage. The effect of along-fibre diameter variation on fibre tensile behaviour of scoured wool and mohair is examined next. Only wet wool samples were examined in the past. The extensions of individual segments of single non-uniform fibres are measured at different strain levels. An important finding is the maximum extension (%) (Normally at the thinnest section) equals the average fibre extension (%) plus the diameter variation (CV %) among the fibre segments. This relationship has not been reported before. During a tensile test, it is only the average fibre extension that is measured. The third part of this work is on the applicability of Weibull distribution to the strength of non-uniform visco-elastic wool fibres. Little work has been done for wool fibres in this area, even though the Weibull model has been widely applied to many brittle fibres. An improved Weibull model incorporating within-fibre diameter variations has been developed for non-uniform fibres. This model predicts the gauge length effect more accurately than the conventional Weibull model. In studies of fibre-reinforced composites, ideal composite specimens are usually prepared and used in the experiments. Sample preparation has been a tedious process. A novel fibre reinforced composite is developed and used in this work to investigate the tensile behaviour of fibre-reinforced composites. The results obtained from the novel composite specimen are consistent with that obtained from the normal specimens.
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Belghiti, Moulay El Mehdi. "Influence of steel fibres on response of beams." Thesis, McGill University, 2007. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=100222.

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The following thesis presents the results of six full scale beams tests as part of a research program conducted at McGill University on the effect of steel fibres on the shear capacity of a beam with an aid ratio greater than 2.5. The test specimens had the following dimensions: 4400 mm long, 300 mm wide and 500 mm long. The beams had 4-25M bottom reinforcing bars and 2-20M top reinforcing bars. Two series were designed with different reinforcing details: the "BA" series contained transverse reinforcement spaced at 275 mm center to center while the "BB" series had no transverse reinforcement. The specimens were cast in three batches of two specimens from each series, with each batch containing concrete with respectively 0%, 0.5% and 1% fibres content by volume. The beams were simply supported and were tested with two equal point loads located at 500 mm from the centre of the beam.
This research project demonstrated a clear improvement of the shear capacity resulting from the use of steel fibres for the beams without transverse reinforcement. For the beams with transverse reinforcement, displacement ductility was highly increased. This suggests that fibres have the potential to reduce the congestion of the reinforcement if fibres are designed to replace partially closely spaced transverse reinforcement. Also, it was noted that a redistribution of stresses occurred resulting in the formation of more well-controlled cracks. Finally, the strength predictions using the method developed by Aoude (Aoude, 2007) agree very well with the experimental results.
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He, Wendy Weiyu, and wendy he@deakin edu au. "The mechanical behaviour of irregular fibre materials." Deakin University. School of Engineering and Technology, 2002. http://tux.lib.deakin.edu.au./adt-VDU/public/adt-VDU20061208.081806.

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This work investigates the effect of fibre irregularities on the mechanical behaviour of the irregular fibres using the finite element method (FEM). The first part of this work examines that the effect of fibre dimensional irregularities on the linear and non-linear tensile behaviour of the fibres, using a two-dimensional (2D) finite element models. In the linear simulation, a concept of method Young’s modulus is introduced. The method Young’s modulus, breaking load and breaking extension are affected by the magnitude and frequency of diameter variation in the fibre specimen. Fibre dimensional variation and the gauge length effect are also simulated. In the non-linear analysis, some additional information is obtained on changes in the yield and post-yield regions, which are clearly shown in the load-extension curves. Further investigation is focused on the flexural buckling behaviour of fibres with dimensional irregularities. A three-dimensional (3D) finite element model is used to simulate the buckling deformation of dimensionally irregular fibres, and the critical buckling load of the simulated fibre is calculated. Two parameters, the effective length and the average diameter within the effective length of an irregular fibre, are considered to be the key factors that influence the buckling behaviour of the fibre. An important aspect of this work is the calculation of the effective length of an irregular fibre specimen during buckling. This method has not been reported before. The third part of this work is on the combined tensile and torsional behaviour of fibres with dimensional irregularities, using a three-dimensional (3D) finite element model. Two types of fibres, polyester and wool, are simulated with sine waves of different level (magnitude) and frequency at different twist levels. For the polyester fibre, experiment verification of the simulation results has been carried out, and the results indicate the FE model is well acceptable for the simulation. The final part of this work examines the combined effect of dimensional and structural irregularities on the fibre tensile behaviour. Three-dimensional (3D) finite element models are used to simulate the cracks (transverse, longitudinal, combined transverse and longitudinal cracks) and cavities distributed in uniform fibres and fibres with 30% level of diameter variation, respectively. One of important conclusions is that under the simulated conditions, the dimensional irregularity of fibre influences the tensile behaviour of fibres more than the fibre structural irregularity. The fibre dimensional irregularity affects not only the values of the breaking load and breaking extension, but also the shape of load-extension curves. However, the fibre structural irregularity simulated in the study appears to have little effect on the shape of the load-extension curves. In addition, the effect of crack or cavity size, type and distribution on fibre tensile properties is also investigated.
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Kalaugher, Elizabeth Mary. "The mechanical properties of CVD diamond coated fibres." Thesis, University of Bristol, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.264062.

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Rengarajan, Muralidharan. "Laboratory testing of shotcrete with fibres of steel, basalt or synthetic materials." Thesis, KTH, Betongbyggnad, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-287310.

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Shotcrete or sprayed concrete has become an inevitable material for stabilising and supporting hard rock tunnels. To prevent rock block fallouts in the excavated tunnel, shotcrete is pneumatically projected under high pressure on the rock surface. This method has proven to reduce the construction time drastically, and the addition of fibres in the shotcrete material results in Fibre Reinforced Shotcrete (FRS). The fibres increased the strength of the parent matrix and made the reinforcement bar (mesh) placing procedure with its heavy labour work unnecessary. Even though FRS have been in use for many years, to design FRS lining there are currently no complete, widely used guidelines. Traditionally, the most frequently used testing was a traditional beam testing method which helps to determine the FRS mechanical properties. Previous studies prove that the result from beams often show a high scatter in the results. Another proposed standard testing method is the Round Determinate Panel method to determine the energy absorption capacity. This method has the potential to be a reliable test procedure with a repeatable and predictable crack pattern.In this project, an experimental investigation was carried out to understand the behaviour of macro fibres of steel, basalt and synthetic materials in FRS. The specimens were sprayed in situ and cast in laboratory, of which the in situ samples were assigned to different curing conditions. The test standard ASTM C-1550 was used to design the round panels and SS-EN 14488-3 for the beams. Each type of FRS specimen’s compressive strength was tested, evaluated and compared. The single fibre pullout strength was tested to determine the bond strength between shotcrete and fibres.The calculated results showed the coefficient of variation (COV) of energy absorption capacity from panels varied within 3 % – 13 % and the residual strength of beams within 12 % – 35 %. Irrespective of testing method, the Dramix 3D steel fibre and Minibars basalt fibre for the tested cases showed the lowest dispersion of result. Minibars showed a significant increase in compressive strength compared to the other fibres. Single fibre pullout testing concluded that the steel fibre had superior load capacity at the first crack. Minibars showed a strength close to that of steel fibres and a failure mode similar to that with synthetic fibres.
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Alwis, Kapugama Geeganage Nadun Chaminda. "Accelerated testing for long-term stress-rupture behaviour of aramid fibres." Thesis, University of Cambridge, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.619983.

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Tlemat, Houssam. "Steel fibres from waste tyres to concrete : testing, modelling and design." Thesis, University of Sheffield, 2004. http://etheses.whiterose.ac.uk/12863/.

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The disposal of waste tyres and steel fibres from tyres is a serious worldwide environmental problem. This thesis examines the use of steel fibres extracted from waste tyres as reinforcement for concrete. Previous attempts to use such fibres with concrete ended up in balling of the fibres and wasting of the concrete. Four concrete mixes using three different types of fibres (from shredded tyres, from pyrolysis and commercially available fibres) were developed. An optimisation procedure was used to maximise the amount of fibre used whilst maintaining a reasonable degree of workability. Single and double sided pull-out tests were developed to determine the anchoring characteristics of fibres. Double-sided tests with multi-fibres were found to be the most reliable. The anchoring characteristics of tyre fibres were found to be as good as for commercially available fibres. Critical fibres lengths were determined for the different fibres used. A simple fibre pull-out model is proposed. Flexural toughness tests were developed and optimised based on the ASTM and Japanese standards. The crack development, neutral axis depth and characteristic length were examined in detail. An examination of the RILEM 0-£ model has shown that the model can overestimate the flexural capacity of Steel Fibre Reinforced Concrete (FRC). New 0-£ models were derived by adopting inverse analysis techniques on results from flexural tests on notched beams. These models when used with Finite Element Analysis (FEA) can predict the behaviour of the tested prisms accurately. For design purposes the models have been simplified. Parametric studies led to design equations which predict the design moment by using a fibre parameter (relating to length and bond) and the fibre amount by weight. The design equations are applied in several applications including the design of slabs on grade. The results compare favourably with existing design guidelines. Finally, slabs for drainage covers were designed and tested, demonstrating that fibres from tyres can be used for industrial applications.
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Bale, Jefri Semuel. "The damage observation of composite using non destructive testing (NDT) method." Thesis, Paris 10, 2014. http://www.theses.fr/2015PA100067/document.

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L'objectif de ce travail de thèse est d'étudier le comportement de l'endommagement des matériaux composites sous chargement statique et fatigue par contrôle non destructif (C.N.D) thermographie et soutenu par émission acoustique et la tomographie (CT scan). Pour cela, ce unidirectionnels composite à fibres de verre (GFRP) et discontinue composite à fibres de carbone (DCFC) ont été utilisés comme les éprouvettes qui ont fourni par PSA peugeot citröen, France. Une série d'essais mécaniques a été réalisée pour déterminer le comportement de l'endommagement sous chargement statique et fatigue. Pendant tout des essais mécanique, la thermographie a été utilisé pour l'observation en temps réel pour suivre l'évolution des températures sur la surface de l'éprouvette et supporté par émission acoustique dans certaines conditions. Cette étude a utilisé une forme rectangulaire et se compose d'éprouvettes trouées et non trouées au centre de l'éprouvette. La vitesse de déplacement constante est appliquée pour observer l'effet sur le comportement de l'endommagement sous chargement de traction statique. Sous les essais de fatigue, le paramètre constant de la fréquence et de l'amplitude de stress a été étudiée pour chaque niveau de charge pour avoir les propriétés de fatigue et l'évolution de l'endommagement de l'éprouvette. La tomographie a été utilisée pour confirmer l'apparition de l'endommagement et l'etat du matériau après l'essai de fatigue. L'analyse des résultats de l'expérimentation et de l'observation NDT montré le bon accord entre les résultats mechnical et NDT thermographie avec prise en charge par l'observation de l'émission acoustique en détecter l'apparition et la propagation de l'endommagement de GFRP PRV et DCFC sous chargement de statique en traction. Les essais en fatigue montrent que la dissipation thermique est liée à l'évolution de l'endommagement et également thermographie et peut être utilisé avec succès pour déterminer la limite d'endurance (HCFS) et la courbe de Wöhler du matériau composite. Les résultats par CT scan ont mesurée avec succès les endommagements et l'état du matériau après essai de fatigue du matériau composite
The aim of this study is to investigate the damage behaviour of composite material in static and fatigue condition with non destructive testing (NDT) thermography method and supported by acoustic emission and also computed tomography (CT) scan. Thermography and acoustic emission are used in real-time monitoring techniques during the test. On the other hand, NDT observation of tomography is used for a post-failure analysis. In order to achive this, continuous glass fiber composite (GFRP) and discontinuous carbon fiber composite (DCFC) have been used as the test specimens which supplied by PSA Company, France. A series of mechanical testing was carried out to determine the damage behaviour under static and fatigue loading. During all the mechanical testing, thermography was used in real-time observation to follow the temperature change on specimen surface and supported by acoustic emission in certain condition. This study used rectangular shape and consist of specimen with and without circular notches (hole) at the center. The constant displacement rate is applied to observe the effect on damage behaviour under tensile static loading. Under fatigue testing, the constant parameter of frequency and amplitude of stress was explored for each load level to have the fatigue properties and damage evolution of specimen. The tomography was used to confirm the appearance of damage and material condition after fatigue testing. The analysis from the experiment results and NDT observation shown the good agreement between mechnical results and NDT thermography with supported by acoustic emission observation in detect the appearance and propagation of damage for GFRP and DCFC under static loading. Fatigue testing shows that thermal dissipation is related to the damage evolution and also thermography and can be successfully used to determine high cycle fatigue strength (HCFS) and S-N curve of fiber composite material. From post failure analysis, CT scan analysis successfully measured and evaluated damage and material condition after fatigue test for fiber composite material. v
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Thompson, Andrew Nathan. "Intrinsic strength of merino wool fibres." Title page, contents and abstract only, 1998. http://web4.library.adelaide.edu.au/theses/09PH/09pht4668.pdf.

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Bibliography: p. 198-233. Results presented highlight the complexity of the task of postulating theoretical models on the basis of simple relationships between chemical constitution and mechanical properties, and more basic research is required to clearly define the roles of microfibril and matrix proteins on the mechanical characteristics of wool fibres.
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Weissenbach, Gerd. "Issues in the analysis and testing of textile composites with large representative volume elements." Thesis, University of Ulster, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.270465.

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Books on the topic "Testing fibres"

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Liolios, K. Biaxial rotation fatigue testing of fibres. Manchester: UMIST, 1988.

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International Bureau for the Standardisation of Man-Made Fibres. Internationally agreed methods for testing nylon staple fibres. Basle, Switzerland: BISFA, 1986.

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Wilson, D. K. Monitoring and testing of manufactured fibres: A critical appreciation of recent developments. Manchester: Textile Institute, 1998.

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Domier, K. W. Utilization of flax fibres for building panels and moulded products. [Alberta]: Alberta Municipal Affairs, Housing Division, 1993.

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Arindam, Basu. Textile testing: Fibre, yarn & fabric. Coimbatore: South India Textile Research Association, 2001.

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Interface Engineering of Natural Fibre Composites for Maximum Performance. Oxford: Woodhead, 2011.

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CDCC, (International Conference) (2nd 2002 Montréal Québec). Durability of fiber reinforced polymer (FRP) composites for construction =: Durabilité des composites en polymères renforcés de fibres (PRF) pour la construction : proceedings of the 2nd International Conference (CDCC 02), Montréal (Québec) Canada, May 29-31, 2002 : comptes rendus de la deuxième Conférence Internationale (CDCC 02), Montréal (Québec) Canada, 29-31 mai 2002. Sherbrooke: Department of Civil Engineering, Université de Sherbrooke, 2002.

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Fiber optic test and measurement. Upper Saddle River, N.J: Prentice Hall PTR, 1998.

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Lanu, Matti. Testing fibre-reinforced concrete in some structural applications. Espoo, Finland: Technical Research Centre of Finland, 1995.

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Sierakowski, R. L. Dynamic loading and characterization of fiber-reinforced composites. New York: Wiley, 1997.

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Book chapters on the topic "Testing fibres"

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Kothari, V. K. "Testing of manufactured fibres." In Manufactured Fibre Technology, 248–70. Dordrecht: Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-011-5854-1_11.

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Adams, D. F. "CFRP Testing and Properties Optimization." In Carbon Fibres and Their Composites, 175–83. Berlin, Heidelberg: Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/978-3-642-70725-4_10.

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Ghosh, Anindya, and Prithwiraj Mal. "Testing of Fibres, Yarns and Fabrics and Their Recent Developments." In Fibres to Smart Textiles, 221–56. Boca Raton : Taylor & Francis, a CRC title, part of the Taylor & Francis imprint, a member of the Taylor & Francis Group, the academic division of T&F Informa, plc, [2020] | Series: Textile Institute professional publications: CRC Press, 2019. http://dx.doi.org/10.1201/9780429446511-12.

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Bakulin, V. N., V. I. Kostikov, and A. A. Rassokha. "Methods of testing fibres and reinforced plastics." In Fibre Science and Technology, 607–71. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-011-0565-1_8.

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Müssig, Jürg, Holger Fischer, Nina Graupner, and Axel Drieling. "Testing Methods for Measuring Physical and Mechanical Fibre Properties (Plant and Animal Fibres)." In Industrial Applications of Natural Fibres, 267–309. Chichester, UK: John Wiley & Sons, Ltd, 2010. http://dx.doi.org/10.1002/9780470660324.ch13.

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Park, Soo-Jin, and Kyong-Min Bae. "Testing of Carbon Fibers and Their Composites." In Carbon Fibers, 135–78. Dordrecht: Springer Netherlands, 2014. http://dx.doi.org/10.1007/978-94-017-9478-7_5.

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Park, Soo-Jin. "Testing of Carbon Fibers and Their Composites." In Carbon Fibers, 139–84. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-0538-2_5.

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Latzke, Peter M. "Testing and Influencing the Properties of Man-Made Fibers." In Synthetic Fibers, 713–811. München: Carl Hanser Verlag GmbH & Co. KG, 1999. http://dx.doi.org/10.3139/9783446401334.009.

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Malzahn, Eric. "EDFA Testing." In Trends in Optical Fibre Metrology and Standards, 511–25. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-011-0035-9_26.

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Bloch, Jean-Francis. "Paper Characterization and Testing." In Lignocellulosic Fibers and Wood Handbook, 611–28. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2016. http://dx.doi.org/10.1002/9781118773727.ch25.

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Conference papers on the topic "Testing fibres"

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Kowalik, Waldemar, and Marian Michalski. "Interferometer For Testing Waveguide Preforms." In Optical Fibres and Their Applications, edited by Ryszard S. Romaniuk and Mieczyslaw Szustakowski. SPIE, 1986. http://dx.doi.org/10.1117/12.938969.

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Ibrahim, Sallehuddin, Norhafizah Ramli, Ruzairi Abdul Rahim, Obert Garnett Green, and Ken Dutton. "A novel low-cost technique of fabricating lens for plastic optical fibres." In Optical Fabrication and Testing. Washington, D.C.: OSA, 2000. http://dx.doi.org/10.1364/oft.2000.otua4.

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Bartuli, Erik, and Tereza Kroulikova. "Testing of Polymeric Hollow Fibre Heat Exchanger with Crossed Hollow Fibres." In The 5th World Congress on Mechanical, Chemical, and Material Engineering. Avestia Publishing, 2019. http://dx.doi.org/10.11159/htff19.143.

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Barille, Regis, Anna Samoc, Barry Luther-Davies, Marek Samoc, and Jean-Michel Nunzi. "Nonlinear effetcts in dye-doped polymer optical fibres for optical communication." In Information Optoelectronics, Nanofabrication and Testing. Washington, D.C.: OSA, 2012. http://dx.doi.org/10.1364/iont.2012.if5b.1.

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Hospodarova, Viola, Nadezda Stevulova, Vojtech Vaclavik, Tomas Dvorsky, and Jaroslav Briancin. "Cellulose Fibres as a Reinforcing Element in Building Materials." In Environmental Engineering. VGTU Technika, 2017. http://dx.doi.org/10.3846/enviro.2017.104.

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Nowadays, construction sector is focusing in developing sustainable, green and eco-friendly building materials. Natural fibre is growingly being used in composite materials. This paper provides utilization of cellulose fibres as reinforcing agent into cement composites/plasters. Provided cellulosic fibres coming from various sources as bleached wood pulp and recycled waste paper fibres. Differences between cellulosic fibres are given by their physical characterization, chemical composition and SEM micrographs. Physical and mechanical properties of fibre-cement composites with fibre contents 0.2; 0.3and 0.5% by weight of filler and binder were investigated. Reference sample without fibres was also produced. The aim of this work is to investigate the effects of cellulose fibres on the final properties (density, water absorbability, coefficient of thermal conductivity and compressive strength) of the fibrecement plasters after 28 days of hardening. Testing of plasters with varying amount of cellulose fibres (0.2, 0.3 and 0.5 wt. %) has shown that the resulting physical and mechanical properties depend on the amount, the nature and structure of the used fibres. Linear dependences of compressive strength and thermal conductivity on density for plasters with cellulosic fibres adding were observed.
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Cheng, Qingwu, Harry Adams, and Metin Yetisir. "Emergency Core Cooling System Sump Strainer Fibre Bypass Testing and Measurement." In ASME 2016 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/pvp2016-63855.

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The potential of losing post-Loss Of Coolant Accident (LOCA) recirculation capability due to debris blockage of Emergency Core Cooling (ECC) strainers resulted in early replacements of ECC strainers in most nuclear power plants. To validate the performance of ECC strainers, extensive testing representing plant conditions is required. Such testing programs include thin-bed and full debris load pressure drop tests, fibre bypass tests and chemical effects tests. Multiple testing loops and state-of-the-art analysis techniques have provided in-depth understanding of sump strainer performance and the effect of chemical precipitation on debris bed head loss. ECC strainers typically use perforated plates as filtering surfaces with 1.6 to 2.5 mm holes and 35 to 40% open area, allowing some particulates and fibres to pass through the strainer filtering surfaces. Recently, the bypassed fibrous debris has been identified as a potential safety concern due to its possible deposition in the reactor core and blocking of flow into fuel assemblies. In some cases, the amount of fibre that is specified as allowed to enter a reactor core is only 15 g per fuel assembly for pressurized water reactors. Characterization and quantification of bypassed fibre debris for nuclear power plants are needed to address regulatory requirements. Testing methodology and analysis techniques to address regulatory requirements and concerns are presented in this paper. In particular, a newly developed technique is presented to address debris bypass quantification.
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Kelz, Andreas, Thomas Jahn, D. Haynes, G. J. Hill, H. Lee, J. D. Murphy, Justus Neumann, et al. "VIRUS: assembly, testing and performance of 33,000 fibres for HETDEX." In SPIE Astronomical Telescopes + Instrumentation, edited by Suzanne K. Ramsay, Ian S. McLean, and Hideki Takami. SPIE, 2014. http://dx.doi.org/10.1117/12.2056384.

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Berg, Arne, and Niels Jo̸rgen Risho̸j-Nielsen. "Integrity Monitoring of Flexible Risers by Optical Fibres." In ASME 2002 21st International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2002. http://dx.doi.org/10.1115/omae2002-28088.

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The use of fibre optic sensing technology for integrity monitoring of flexible risers has been demonstrated. A technique for integration of the sensors along the tensile armouring has been developed and used in testing of a full-scale riser where the strain in the tensile armour was measured. The integration technique is also applicable to fibre optic sensors for other measurands. The test riser was exposed to a fatigue test of 612 000 bending cycles. The strain measurements provided new and important data about the conditions in the annulus of a riser during operation. The small diameter of optical fibres (OD = 0.125mm) and the multiplexing features of sensors based on fibre Bragg gratings (FBG) make it possible to realise various sensing systems in the riser annulus. A possible combination of different fibre optic sensors is outlined.
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Grzeschik, Marc. "Performance of Foldcores Mechanical Properties and Testing." In ASME 2013 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/detc2013-13324.

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Foldcores are folded open cellular structures which are currently under development at Institute of Aircraft Design (IFB). The IFB has generated an integrated manufacturing process to produce foldcores, starting with the mathematical methods to design the required foldcore geometry to the point of realizing them in an automated and continuous fashion. By isometric folding of planar base materials foldcores can and have already been manufactured out of a large variety of materials: cardboard, papers, metals (aluminum, steel, titanium), different thermoplastic films (PC, PVC, PPSU, PEEK) as well as advanced fibre reinforced materials (glass, carbon, aramid fibres). For the technical use of foldcores in sandwich structures it is necessary to supply a competitive level of mechanical performance. We discuss the mechanical properties of foldcores compared to other state of the art core materials. We detail the testing methods used to determine compression and shear strengths and stiffnesses, which are based upon international standards. Evaluation of the test results show potential for the use of foldcores in high performance lightweight structures, especially considering their unique multifunctional applicability.
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Monty, Stephanie, Farbod Jahandar, Jooyoung Lee, Kim A. Venn, Colin Bradley, Darren Erickson, David Crampton, et al. "Automated testing of optical fibres: towards the design of the Maunakea Spectroscopic Explorer Fibre Transmission System." In Ground-based and Airborne Instrumentation for Astronomy VII, edited by Hideki Takami, Christopher J. Evans, and Luc Simard. SPIE, 2018. http://dx.doi.org/10.1117/12.2311952.

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Reports on the topic "Testing fibres"

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Weiss, Charles, William McGinley, Bradford Songer, Madeline Kuchinski, and Frank Kuchinski. Performance of active porcelain enamel coated fibers for fiber-reinforced concrete : the performance of active porcelain enamel coatings for fiber-reinforced concrete and fiber tests at the University of Louisville. Engineer Research and Development Center (U.S.), May 2021. http://dx.doi.org/10.21079/11681/40683.

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A patented active porcelain enamel coating improves both the bond between the concrete and steel reinforcement as well as its corrosion resistance. A Small Business Innovation Research (SBIR) program to develop a commercial method for production of porcelain-coated fibers was developed in 2015. Market potential of this technology with its steel/concrete bond improvements and corrosion protection suggests that it can compete with other fiber reinforcing systems, with improvements in performance, durability, and cost, especially as compared to smooth fibers incorporated into concrete slabs and beams. Preliminary testing in a Phase 1 SBIR investigation indicated that active ceramic coatings on small diameter wire significantly improved the bond between the wires and the concrete to the point that the wires achieved yield before pullout without affecting the strength of the wire. As part of an SBIR Phase 2 effort, the University of Louisville under contract for Ceramics, Composites and Coatings Inc., proposed an investigation to evaluate active enamel-coated steel fibers in typical concrete applications and in masonry grouts in both tension and compression. Evaluation of the effect of the incorporation of coated fibers into Ultra-High Performance Concrete (UHPC) was examined using flexural and compressive strength testing as well as through nanoindentation.
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McCary, Kelly, Austin Fleming, Joshua Daw, Sohel Rana, Harish Subbaranman, and Nirmala Kandadai. Out-of-Pile Testing of Radiation Hard Optical Fibers. Office of Scientific and Technical Information (OSTI), July 2019. http://dx.doi.org/10.2172/1668371.

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Morgan, Robert, Brandon McReynolds, Katheryn Husmann, John McCoy, Ryan Maki, Ryan Holguin, John Bernardin, and Antranik Siranosian. Markforged Continuous Fiber Composite Material Testing. Office of Scientific and Technical Information (OSTI), July 2020. http://dx.doi.org/10.2172/1641543.

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Fish, Aron. Construction and testing of the scintillating fibre trackers for MICE. Office of Scientific and Technical Information (OSTI), September 2009. http://dx.doi.org/10.2172/983634.

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Quinn, Meghan. Geotechnical effects on fiber optic distributed acoustic sensing performance. Engineer Research and Development Center (U.S.), July 2021. http://dx.doi.org/10.21079/11681/41325.

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Distributed Acoustic Sensing (DAS) is a fiber optic sensing system that is used for vibration monitoring. At a minimum, DAS is composed of a fiber optic cable and an optic analyzer called an interrogator. The oil and gas industry has used DAS for over a decade to monitor infrastructure such as pipelines for leaks, and in recent years changes in DAS performance over time have been observed for DAS arrays that are buried in the ground. This dissertation investigates the effect that soil type, soil temperature, soil moisture, time in-situ, and vehicle loading have on DAS performance for fiber optic cables buried in soil. This was accomplished through a field testing program involving two newly installed DAS arrays. For the first installation, a new portion of DAS array was added to an existing DAS array installed a decade prior. The new portion of the DAS array was installed in four different soil types: native fill, sand, gravel, and an excavatable flowable fill. Soil moisture and temperature sensors were buried adjacent to the fiber optic cable to monitor seasonal environmental changes over time. Periodic impact testing was performed at set locations along the DAS array for over one year. A second, temporary DAS array was installed to test the effect of vehicle loading on DAS performance. Signal to Noise Ratio (SNR) of the DAS response was used for all the tests to evaluate the system performance. The results of the impact testing program indicated that the portions of the array in gravel performed more consistently over time. Changes in soil moisture or soil temperature did not appear to affect DAS performance. The results also indicated that time DAS performance does change somewhat over time. Performance variance increased in new portions of array in all material types through time. The SNR in portions of the DAS array in native silty sand material dropped slightly, while the SNR in portions of the array in sand fill and flowable fill material decreased significantly over time. This significant change in performance occurred while testing halted from March 2020 to August 2020 due to the Covid-19 pandemic. These significant changes in performance were observed in the new portion of test bed, while the performance of the prior installation remained consistent. It may be that, after some time in-situ, SNR in a DAS array will reach a steady state. Though it is unfortunate that testing was on pause while changes in DAS performance developed, the observed changes emphasize the potential of DAS to be used for infrastructure change-detection monitoring. In the temporary test bed, increasing vehicle loads were observed to increase DAS performance, although there was considerable variability in the measured SNR. The significant variation in DAS response is likely due to various industrial activities on-site and some disturbance to the array while on-boarding and off-boarding vehicles. The results of this experiment indicated that the presence of load on less than 10% of an array channel length may improve DAS performance. Overall, this dissertation provides guidance that can help inform the civil engineering community with respect to installation design recommendations related to DAS used for infrastructure monitoring.
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Caceres, Arsenio, Robert M. Jamond, Theresa A. Hoffard, and L. J. Malvar. Salt-Fog Accelerated Testing of Glass Fiber Reinforced Polymer Composites. Fort Belvoir, VA: Defense Technical Information Center, December 2002. http://dx.doi.org/10.21236/ada409960.

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Hartman, Quinn. MIL-STD-1660 Testing of Unitization Procedures for Fiber Drums. Fort Belvoir, VA: Defense Technical Information Center, March 1989. http://dx.doi.org/10.21236/ada215601.

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Jenket, Donald R., Amy E. Engelbrecht-Wiggans, Amanda L. Forster, and Mohamad Al-Sheikhly. A new method for tensile testing UHMMPE single fibers at high temperatures and strain-rates. Gaithersburg, MD: National Institute of Standards and Technology, August 2019. http://dx.doi.org/10.6028/nist.ir.8265.

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Najafi, Nezam. Performance Oriented Packaging Testing of Bulk Propellant in New Fiber Drum. Fort Belvoir, VA: Defense Technical Information Center, July 1989. http://dx.doi.org/10.21236/ada211199.

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Wang, Jy-An John. Development of a Testing Protocol for C7 Carbon Fiber Core Conductors. Office of Scientific and Technical Information (OSTI), April 2018. http://dx.doi.org/10.2172/1630527.

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