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Relevant bibliographies by topics / Yarn testing

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Academic literature on the topic 'Yarn testing'

Author: Grafiati

Published: 4 June 2021

Last updated: 19 February 2022

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Journal articles on the topic "Yarn testing"

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Hardy, Dorothy Anne, Zahra Rahemtulla, Achala Satharasinghe, Arash Shahidi, Carlos Oliveira, Ioannis Anastasopoulos, Mohamad Nour Nashed, et al. "Wash Testing of Electronic Yarn." Materials 13, no. 5 (March 9, 2020): 1228. http://dx.doi.org/10.3390/ma13051228.

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Electronically active yarn (E-yarn) pioneered by the Advanced Textiles Research Group of Nottingham Trent University contains a fine conductive copper wire soldered onto a package die, micro-electro-mechanical systems device or flexible circuit. The die or circuit is then held within a protective polymer packaging (micro-pod) and the ensemble is inserted into a textile sheath, forming a flexible yarn with electronic functionality such as sensing or illumination. It is vital to be able to wash E-yarns, so that the textiles into which they are incorporated can be treated as normal consumer products. The wash durability of E-yarns is summarized in this publication. Wash tests followed a modified version of BS EN ISO 6330:2012 procedure 4N. It was observed that E-yarns containing only a fine multi-strand copper wire survived 25 cycles of machine washing and line drying; and between 5 and 15 cycles of machine washing followed by tumble-drying. Four out of five temperature sensing E-yarns (crafted with thermistors) and single pairs of LEDs within E-yarns functioned correctly after 25 cycles of machine washing and line drying. E-yarns that required larger micro-pods (i.e., 4 mm diameter or 9 mm length) were less resilient to washing. Only one out of five acoustic sensing E-yarns (4 mm diameter micro-pod) operated correctly after 20 cycles of washing with either line drying or tumble-drying. Creating an E-yarn with an embedded flexible circuit populated with components also required a relatively large micro-pod (diameter 0.93 mm, length 9.23 mm). Only one embedded circuit functioned after 25 cycles of washing and line drying. The tests showed that E-yarns are suitable for inclusion in textiles that require washing, with some limitations when larger micro-pods were used. Reduction in the circuit’s size and therefore the size of the micro-pod, may increase wash resilience.

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DUBROVSKI, POLONA DOBNIK. "Breaking force analysis of cotton ring-spun yarns." Industria Textila 71, no. 03 (June 28, 2020): 223–26. http://dx.doi.org/10.35530/it.071.03.1650.

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The most important factor influencing the production efficiency of final textile products made from yarns as well as the product performance are the tensile properties of the yarn. The breaking force of spun yarns, assessed with standard static procedure, depends on several parameters, one of them being the testing conditions. In our research, the effect of testing conditions (climatic conditions, the ratio gauge length/constant rate of extension and sampling, which refers to the number of yarn package and the position of package winding, taken from the bobbin) on the breaking force of 100% cotton ring-spun yarns was analyzed using the statistical evaluation method “ANOVA”. The results clearly indicate that indeed all input parameters of testing conditions have a statistically significant effect on the breaking force of the yarn. When we judge the suitability of yarns to withstand a certain tension produced by technological procedures, not only average breaking force should be focused on. The information regarding the tested minimum breaking force of yarn becomes very important regarding our decision whether yarn fulfills the prescribed value of breaking force.

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Erdumlu, Nazan, Bulent Ozipek, and William Oxenham. "The structure and properties of carded cotton vortex yarns." Textile Research Journal 82, no. 7 (January 19, 2012): 708–18. http://dx.doi.org/10.1177/0040517511433150.

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The properties and spinning limits of carded cotton vortex spun yarns were investigated through the progressive change in yarn count. The yarns were tested for structural and physical properties. Critical parameters were obtained, including the ratio of wrapper fibers to core fibers, proportion and average length of different structural classes in the yarn. The structural analysis revealed that the wrapper fibers constitute an increasing proportion of the fibers as the yarn becomes finer. Moreover, the proportion and average length of different structural classes in vortex spun yarns change with yarn count. The analysis of the data obtained from yarn testing showed that as the yarn becomes finer, the yarn becomes more uneven and the number of yarn imperfections markedly increase. On the other hand, the tensile properties of vortex spun yarns remain almost unchanged as the yarn gets finer.

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Liu, Shuang Shuang, Wei Tian, and Cheng Yan Zhu. "Mechanical Property for the Combining Yarn of BF/GF and Polypropylene." Advanced Materials Research 910 (March 2014): 127–31. http://dx.doi.org/10.4028/www.scientific.net/amr.910.127.

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In order to study the mechanical property for the combining yarn of BF/GF and polypropylene, 8 groups of combining yarn were designed and prepared. Through testing the mechanical property of the yarns, the affection of some parameters on the property of the yarns was analyzed. And following conclusions can be gotten. For BF/polypropylene combining yarn, when the fiber content of basalt is about 50.7%, the mechanical property of the yarn is the best. When the fiber content of basalt is about 43.7%, the mechanical property of the yarn is the worst. For GF/polypropylene combining yarn, the optimal and worst ratio is 55.42% and 44.4%, respectively.

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Zhu, Bo, Zhongjian Li, Xinwei Cao, Jianli Liu, and Weidong Gao. "Dynamic Measurement of Foam-Sized Yarn Properties from Yarn Sequence Images." Autex Research Journal 18, no. 3 (September 1, 2018): 314–22. http://dx.doi.org/10.1515/aut-2017-0030.

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Abstract Unlike the normal sizing method, the foam sizing had been proven to be a low-add-on technology. To investigate the effect of foam sizing, film thickness, sized-yarn evenness, and size penetration rate were necessary to evaluate the performances of foam-sized yarns. However, the conventional image analysis of sized-yarn cross sections primarily relied on artificial testing with a low efficiency. This paper proposed a novel dynamic method to measure the sized-yarn properties including film thickness, sized-yarn evenness, and size penetration rate based on yarn sequence images captured from a moving yarn. A method of dynamic threshold module was adopted to obtain threshold for segmenting yarns in the sequence images. K-means clustering algorithm was applied to segment pixels of the images into yarn and background. To further remove burrs and noise in the images, two judgment templates were carried out to extract the information of yarn core. The film thickness, sized-yarn evenness, and size penetration rate were measured based on the yarn core of each frame in sequence images. In order to compare with the experimental results of the dynamic method, the yarn properties of the same samples were tested by static and artificial testing. Results revealed that the proposed method could efficiently and accurately detect the film thickness, sized-yarn evenness, and size penetration rate.

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Pitz, Emil, Matei-Constantin Miron, Imre Kállai, and Zoltán Major. "NUMERICAL PREDICTIONS AND MECHANICAL TESTING OF BRAIDED COMPOSITE STRUCTURES UTILISING DIGITAL IMAGE CORRELATION." Acta Polytechnica CTU Proceedings 7 (December 9, 2016): 43. http://dx.doi.org/10.14311/app.2017.7.0043.

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The current paper is describing the implementation of a multiscale numerical model for prediction of stiffness and strength in braided composites. The model is validated by experimental testing of single-layer braided tubes under torsional loading utilising digital image correlation (DIC). For the numerical model the entire braided structure is modelled at yarn detail level, taking into account the yarn behaviour as well as individual yarn-to-yarn interactions by using cohesive contact definitions. By means of Hashin’s failure criteria and cohesive contact damage, failure of the yarns and failure of the yarn-to-yarn interface is being accounted for. Thereby the material failure behaviour can be predicted. For validation of the model, torsion tests of biaxially braided single-layer composite tubes were performed. The strain distribution at the specimen surface was studied using the DIC system ARAMIS in 3D mode.

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Ma, Qin, and Xue Feng Liu. "Comparative Research of the Sizing Performance of the Compact Spun-Yarn and Ring Spun-Yarn." Advanced Materials Research 535-537 (June 2012): 1425–28. http://dx.doi.org/10.4028/www.scientific.net/amr.535-537.1425.

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The characteristics of the compact spun yarn were introduced, and the problems in the sizing process of compact spun yarns were analyzed. Because of the high size loading of the compact spun yarn, a large number of yarns break and the chubbiness of the fabric were affected. Aiming at the problems above, through sizing experiment and testing of the performance of the yarns, the differences between the compact spun yarn and the conventional ring spun yarn were analyzed. Comparing with the conventional ring spun yarn, the size loading rate of the compact spun yarn was reduced about 1 to 3.5 percentage points under the same equipment conditions and sizing techniques. To obtain the same strength and hairiness sticking effect, the size loading of the compact spun yarn can be 5 to 6 percentage points lower than that of the conventional ring spun yarn. Sizing materials can be saved, and the cost of the sizing process could reduced by 50%.

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Flory, J. F., M. Goksoy, and J. W. S. Hearle. "Yarn-on-yarn Abrasion Testing of Rope Yarns. Part I: The Test Method." Journal of the Textile Institute 79, no. 3 (January 1988): 417–31. http://dx.doi.org/10.1080/00405008808658276.

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Krupincová, G., and J. Hatipoglu. "Testing of yarn abrasion." Autex Research Journal 13, no. 1 (March 27, 2013): 22–27. http://dx.doi.org/10.2478/v10304-012-0019-3.

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Abstract There exist a lot of methodologies, which can be used for yarn quality testing. Abrasion resistance and its measurement for raw and sized yarn can help in the judgment of yarn weaving-ability. This article concentrates on the possibility of yarn abrasion expression and testing. Relation among fiber material characteristics, selected yarn structural, and mechanical parameters is discussed and a few experimental results are shown.

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Peiffer, Julie, KyoungOk Kim, Hiroaki Yoshida, and Masayuki Takatera. "Measurement of torsional rigidity of yarns with different crimps." Textile Research Journal 88, no. 6 (December 23, 2016): 605–13. http://dx.doi.org/10.1177/0040517516685283.

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The effect of crimp on torsional rigidity of monofilament and cotton spun yarns was studied. Two kinds of polymeric monofilament yarns and four kinds of cotton spun yarns were examined. Different crimps were applied to the yarn using original crimp setting equipment. To fix the crimp, the polymeric monofilaments were treated with heat, and the cotton spun yarns were treated with steam. The test samples were then produced following two protocols: with or without the application of weight. The yarn torsional rigidities with crimp were measured using a torsional measurement device, and were compared with those without crimp. Almost no weight was applied to the cotton spun yarns to preserve the crimp during testing. The results with and without the application of weight were compared. For the monofilament yarns, the torsional rigidities of the crimped yarns had a linear relationship with the crimp ratio. For the cotton spun yarns, the torsional rigidities of the crimped yarns were smaller than those of the straight yarns. The smaller the yarn count, the smaller the yarn torsional rigidity. The effect of crimp on torsional rigidity differed according to the yarn counts. There was almost no difference in crimped yarn torsional rigidity between the straightened and non-straightened yarns after crimp setting. Therefore, there is a possibility that the change in yarn properties could have resulted from the bending of the fiber during crimp setting, and not from the shape of the crimp afterwards.

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Dissertations / Theses on the topic "Yarn testing"

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Goksoy, M. "A study of yarn-on-yarn abrasion." Thesis, University of Manchester, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.382649.

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Chang, Lingli, and mikewood@deakin edu au. "An investigation of yarn hairiness." Deakin University. School of Engineering and Technology, 2002. http://tux.lib.deakin.edu.au./adt-VDU/public/adt-VDU20060823.141926.

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Yarn hairiness affects not only the quality of products, but also the productivity in spinning and weaving. Too much yarn hairiness is undesirable for many end uses as well as the spinning and post spinning processes. The main aims of this project are to examine the hairiness features of various yarns and to reduce yarn hairiness. The thesis covers five related areas hairiness assessment, factors affecting yarn hairiness, the hairiness of newly developed yarns, yarn hairiness reduction, and effect of yarn hairiness on the energy consumption in ring spinning. The worsted cashmere, pure wool and wool/cashmere blend yarns were employed to investigate the effect of some fibre parameters on the yarn hairiness. A single exponential distribution of the hair-length was confirmed first, using the data from the Zweigle G565 Hairiness Meter. A linear relationship was observed between the blend ratio and the hairiness indexes. In particular, the effect of fibre crimp or curvature on yarn hairiness is examined. The theory of yarn hairiness composition was also developed further. The effect of draft ratio and spindle speed on the hairiness of worsted wool yarn was examined next with a factorial experiment design. Several new hairiness indexes, namely the relative hairiness indexes, have been used to explain the results obtained. In the investigation of the hairiness of newly developed yarns, the hairiness of the Compact Spun and Roller-Jet-Spun yarns was examined first. The composition of the yarn hairiness, the hair-length distribution, and the effect of test speed on yarn hairiness were then studied. An important finding is that for both yarns, the predominant hairiness feature is the looped hairs. A comparison of the hairiness of Solospun yarns and the equivalent ring spun wool yarns was undertaken. The hair-length distribution of the Solospun yarn was examined first. The Solospun yarns used had fewer hairs in most hair-length groups and lower variations in hairiness. In addition, the effect of twist level and spindle speed on the hairiness of Solospun and conventional ring spun yarns has also been discussed. A novel approach of reducing yarn hairiness spinning with a Diagonal yarn path was examined next. Both Left Diagonal and Right Diagonal yarn arrangements were studied. A new finding is that the Right Diagonal yarn path leads to reduced hairiness for the Z-twist yarn, while yarn evenness and tenacity are not as sensitive to the modified yarn path. The mechanism of hairiness reduction with the Diagonal yarn path has been discussed. The spinning performance of Right Diagonal yarn arrangement has also been evaluated. Finally, the effect of yarn hairiness on the energy consumption in ring spinning has been investigated theoretically and experimentally. A theoretical model has been developed, which represents the first attempt at theoretically investigating the influence of yarn hairiness on energy consumption during the winding stage of ring spinning. The experimental results have generally confirmed predictions of this model. Recommendations for further research in this area have also been made in the concluding chapter of this thesis.

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Ok, Hyunyoung. "Single end sizing of yarn using a slot applicator." Thesis, Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/8653.

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Hong, Joohyun. "Structure-process-property relationships in polyester spun yarns : the role of fiber friction." Diss., Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/10118.

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Rypl, Rostislav, Rostislav Chudoba, Miroslav Vorechovský, and Thomas Gries. "Evaluation of the Length Dependent Yarn Properties." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2011. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-77843.

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The paper proposes a method for characterizing the in-situ interaction between filaments in a multifilament yarn. The stress transfer between neighboring filaments causes the reactivation of a broken filament at some distance from the break. The utilized statistical bundle models predict a change in the slope of the mean size effect curve once the specimen length becomes longer than the stress transfer length. This fact can be exploited in order to determine the stress transfer length indirectly using the yarn tensile test with appropriately chosen test lengths. The identification procedure is demonstrated using two test series of tensile tests with AR-glass and carbon yarns.

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Meng, Xiaomin. "Influence of yarn and fabric construction parameters on the performance of cotton/dyneema fabrics for tent applications." Thesis, Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/8622.

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Kaděrová, Jana. "Multi-filament yarns testing for textile-reinforced concrete." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2012. http://www.nusl.cz/ntk/nusl-225556.

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The scope of the presented master thesis was the experimental study of multi-filament yarns made of AR-glass and used for textile-reinforced concrete. The behavior under the tensile loading was investigated by laboratory tests. A high number of yarn specimens (over 300) of six different lengths (from 1 cm to 74 cm) was tested to obtain statistically significant data which were subsequently corrected and statistically processed. The numerical model of the multi-filament bundle was studied and applied for prediction of the yarn performance and for later results interpretation. The model of n parallel filaments describes the behavior of a bundle with varying parameters representing different sources of disorder of the response and provides the qualitative information about the influence of their randomization on the overall bundle response. The aim of the carried experiment was to validate the model presumptions and to identify the model parameters to fit the real load-displacement curves. Unfortunately, due to unsuccessful correction of measured displacements devalued by additional non-linear contribution of the unstiff experiment device the load-displacement diagrams were not applicable to model parameters identification. The statistical evaluation was carried only for the maximal load values and the effect of the specimen size (length) on its strength was demonstrated. The size effect curve did not exclude the existence of spatial correlation of material mechanical properties modifying the classical statistical Weibull theory.

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Kleynhans, Rodney. "The influence of atmospheric conditions on the detection of hotspots inside a substation yard." Thesis, [Bloemfontein?] : Central University of Technology, Free State, 2012. http://hdl.handle.net/11462/154.

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Thesis (M. Tech. Electrical engineering) -- Central University of technology, Free State, 2012
Infrared thermography is a non-contact method of identifying the thermal behaviour of various plant equipment and machines, including their components, qualitatively via pattern recognition and quantitatively via statistical analysis. This allows for the development of condition monitoring and predictive failure analysis. It is well established that optimized maintenance planning can be more effective when a problem is detected in the early stages of failure. For example, in electrical systems an elevated electrical resistance caused by loose or corroded connections, broken conductor strands and dirty contact surfaces, results in localized heating, and a unique infrared pattern when analysed leads to the location of the problem and an indication of its severity. In recent years industrial thermography has used infrared detectors in the long wave portion of the electromagnetic spectrum normally between 8μm and 15μm, due partly to the fact that these wavelengths are not susceptible to solar radiation and/or solar glint. A number of scientific experiments were carried out on test apparatus to improve the understanding of the impact of convection, ambient air temperature and relative humidity on resultant infrared thermal images. Two similar heat sources, simulating a hotspot, at different temperature settings were used to determine whether the hotspot temperature should also be considered in conjunction with the atmospheric elements. The need for these experiments has also been identified by EPRI (Electrical Power Research Institute) in the USA as necessary to develop international severity criteria, and it is hoped that this study will contribute to this goal.

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Rocher, Jean-Emile. "Caractérisation expérimentale et modélisation à l’échelle mésoscopique du comportement de tissus 3D de mèches comélées." Thesis, Orléans, 2014. http://www.theses.fr/2014ORLE2035/document.

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Cette thèse s’inscrit dans le cadre du projet européen 3D-LightTrans ayant pour objectifs la fabrication à grande à échelle et à bas coût de pièces composites. Pour parvenir à ces objectifs, des semi-produits sous forme de tissus 3D de mèches comélées ont été réalisés. Le but de ces travaux est de caractériser le comportement mécanique de ces tissus en vue d’analyser leur formabilité et d’être en mesure de prédire leur comportement pendant les processus de mise en forme utilisés lors de la fabrication des pièces composites. Le premier objectif de ces travaux était de caractériser expérimentalement le comportement mécanique des tissus 3D. Après avoir effectué un état de l’art ayant permis de définir les types et paramètres d’essais à utiliser pour la caractérisation du comportement des tissus, l’analyse des résultats de ces différents essais a permis de mettre en évidence les spécificités du comportement des tissus 3D. Le deuxième objectif des travaux était de modéliser le comportement des tissus par une approche numérique. Le choix s’étant porté sur une approche à l’échelle mésoscopique, le comportement mécanique des mèches comélées a été caractérisé expérimentalement. Les limitations du logiciel GeoFab quant à son utilisation pour la génération de modèles CAO de mailles élémentaires de tissus 3D ont été identifiées. Des améliorations permettant de répondre à ces limitations ont été proposées et leur faisabilité démontrée. Un modèle CAO d’une sous partie de la maille élémentaire d’un des tissus a alors été généré. Après avoir modélisé le comportement des mèches comélées en se basant sur les résultats de leur caractérisation expérimentale, des premières simulations éléments finis ayant permis d’obtenir des résultats encourageants ont été réalisés
This thesis is part of the European project 3D-LightTrans whose objectives are the large scale and low-cost manufacturing of composite parts. To achieve these goals, semi-finished products in the form of 3D fabrics of commingled yarns were produced. The purpose of this work is to characterize the mechanical behavior of these fabrics in order to investigate their formability and be able to predict their behavior during the forming processes used for the manufacturing of composite parts. The first objective of the work was to characterize experimentally the 3D fabrics mechanical behavior. A state of the art was realized in order to define the types and test parameters to use. The analysis of these test results allowed to highlight the specific 3D fabrics mechanical behaviour. The second objective of the work was to model the fabrics behavior using a numerical method. A mesoscopic scale approach having been selected, experimental characterization of the commingled yarns mechanical behavior was necessary. Then, GeoFab software limitations on its use for the generation of CAD models of 3D fabrics unit cells were identified. Improvements to address these limitations have been proposed and their feasibility was demonstrated. A CAD model of a sub part of one of the fabrics unit cell was then generated. After having modeled the commingled yarns behaviour using experimental results, finite element simulations were performed on fabric CAD model and first encouraging results were obtained

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Škorňa, Martin. "Stavebně technologický projekt rezidence Kollárova." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2019. http://www.nusl.cz/ntk/nusl-392204.

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The subject of the diploma thesis is a construction technology study of the proces of realization. The aim of the thesis is to design a suitable technological procedure for the construction of the main building with a focus on feasibility. The content of the diploma thesis is the design of a suitable solution of partial processes, mechanization and organization of work leading to the successful realization of the object. The diploma thesis is focused on the feasibility of works concerning the variable way of ensuring the stability of the walls of the building pit in the existing urban area, the design of the machine assembly, the budget item, the costs of the construction site equipment and, last but not least, the safety plan.

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Books on the topic "Yarn testing"

1

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

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Saharkhiz, S. Multi-purpose dynamic yarn testing. Manchester: UMIST, 1998.

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Halliday, L. A. Performance testing of the prototype andar unidryer on hanks of yarn. Christchurch: Wronz, 1986.

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Gong, R. H. Specialist yarn, woven and fabric structures: Developments and applications. Sawston: Woodhead Pub., 2011.

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Cathcart, Clifford. The emulation of some features of a proprietary yarn eveness testing equipment using a personal computer. [S.l: The Author], 1994.

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Yu yan ce shi: Language testing. Shanghai: Shanghai wai yu jiao yu chu ban she, 2005.

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Sheng bo yan shi fen ji he yan shi dong tan xing li xue can shu di fen xi yan jiu. Beijing: Di zhi chu ban she, 1997.

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Fei xing shi yan gong cheng. Beijing Shi: Hang kong gong ye chu ban she, 2010.

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Shui ni wu li jian yan. 3rd ed. Beijing: Zhongguo jian zhu gong ye chu ban she, 1985.

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Zhuang bei shi yan zhi hui xue. Beijing Shi: Guo fang gong ye chu ban she, 2010.

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Book chapters on the topic "Yarn testing"

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Canfora, Gerardo, Mimmo Carapella, Andrea Del Vecchio, Laura Nardi, Antonio Pirozzi, and Corrado Aaron Visaggio. "About the Robustness and Looseness of Yara Rules." In Testing Software and Systems, 104–20. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-64881-7_7.

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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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HEARLE, J. W. S., B. LOMAS, and W. D. COOKE. "YARN TESTING." In Atlas of Fibre Fracture and Damage to Textiles, 192–203. Elsevier, 1998. http://dx.doi.org/10.1533/9781845691271.5.192.

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"Yarn tests." In Physical Testing of Textiles. CRC Press, 1999. http://dx.doi.org/10.1201/9781439822753.ch4.

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Saville, B. P. "Yarn tests." In Physical Testing of Textiles, 77–114. Elsevier, 1999. http://dx.doi.org/10.1533/9781845690151.77.

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Gokarneshan, N., B. Varadarajan, and C. B. Senthil Kumar. "Calculations in yarn testing." In Mechanics and Calculations of Textile Machinery, 272–91. Elsevier, 2013. http://dx.doi.org/10.1533/9780857095527.2.272.

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Ugbolue, S. "Fiber and yarn identification." In Chemical Testing of Textiles. CRC Press, 2005. http://dx.doi.org/10.1201/9781439823774.ch1.

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Ugbolue, S. C. "Fiber and yarn identification." In Chemical Testing of Textiles, 1–16. Elsevier, 2005. http://dx.doi.org/10.1533/9781845690694.1.

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"Advanced topics II: Testing of textile materials." In Handbook of Yarn Production, 350–72. Elsevier, 2003. http://dx.doi.org/10.1016/b978-1-85573-696-2.50019-7.

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"Composite Material Testing Methods: Fiber, Yarn, Fabric, Polymer and Composite." In Natural Fiber Textile Composite Engineering, 281. Taylor & Francis Group, 6000 Broken Sound Parkway NW, Suite 300, Boca Raton, FL 33487-2742: CRC Press, 2017. http://dx.doi.org/10.1201/9781315207513-12.

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Conference papers on the topic "Yarn testing"

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Gao, X. L., S. S. Zhou, S. E. Bosselman, and J. Q. Zheng. "A Comparative Experimental Study on Tensile Properties of Three Types of High-Performance Polymer Fibers." In ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-65977.

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A comparative experimental study on tensile properties of three types of high-performance polymeric fiber yarns — AuTx™, Kevlar® KM2 600 denier and Twaron® 500 denier — is conducted. Tensile tests are performed on samples of the three kinds of fiber yarns at five testing temperatures (24, 50, 60, 70 and 80 °C) and three loading rates (100, 200 and 300 mm/min). The elastic modulus, breaking stress, and breaking strain are obtained for each type of fiber yarns under specified testing conditions as averages of measured values from 15 specimens. The experimental data reveal that the tensile properties of all three types of fiber yarns under investigation exhibit strong temperature dependence, with the elastic modulus and breaking stress decreasing with the temperature increase. However, the dependency of the properties on the loading rate is insignificant for the range considered. The measured tensile properties of the Kevlar® and Twaron® yarns are seen to be close, while the elastic modulus and breaking stress of the AuTx™ yarn are found to be, respectively, about 12% and 40% higher than those of the Kevlar® and Twaron® fiber yarns. It is also observed that the AuTx™ yarn degrades about two times faster than the other two yarns as temperature increases.

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Montero, L., S. Allaoui, and Gilles Hivet. "Effect of the testing parameters on the frictional behaviors of yarn/yarn and fabric/fabric of glass plain weave reinforcement." In ESAFORM 2016: Proceedings of the 19th International ESAFORM Conference on Material Forming. Author(s), 2016. http://dx.doi.org/10.1063/1.4963557.

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Komeili, Mojtaba, and Abbas S. Milani. "On the Effect of Uncertainty Factors on Mechanical Behavior of Woven Fabric Composites at Meso-Level." In ASME 2009 International Mechanical Engineering Congress and Exposition. ASMEDC, 2009. http://dx.doi.org/10.1115/imece2009-12079.

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Unit cell modeling of woven fabric composites at meso-level has been advantageous in finding equivalent mechanical properties of different weave architectures without performing physical experiments on each new fabric. The obtained properties, in turn, can be used in the macro-level modeling and simulation of large composite structures. Models used for this purpose, however, often consider a perfect description of unit cells, while in practice fabrics are not always fabricated under ideal conditions and flaws like fiber misalignment, material and/or geometrical defects are present. A benchmark work covering effects of this kind on the mesoscopic behavior of woven fabrics is underway. The aim of this paper is to present a statistical way to approach the problem by studying the main effects of such uncertainty/noise factors along with their levels of significance. Namely, a one-factor-at-a-time screening method is selected to identify the effect of (1) fiber misalignment, (2) fiber modulus variation, (3) geometrical flaws in yarn section, (4) unpredictable friction between weft and warp yarns. Computer experiments are done using FE modeling of a plain weave unit cell under the uniaxial, equibiaxial, and trellising (shear) modes. A parameter sensitivity analysis is conducted to identify the most significant factors and the extent to which each can independently contribute to the variation of load-displacement curves (i.e., testing data non-repeatabilities).

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ABOT, JANDRO L., JUDE C. ANIKE, JOSEPH H. BILLS, ZACH ONORATO, DEVON L. GONTESKI, TSOTNE KVELASHVILI, and KALAYU BELAY. "Carbon Nanotube Yarn Sensors for Precise Monitoring of Damage Evolution in Laminated Composite Materials: Latest Experimental Results in In-Situ and Post-Testing Validation." In American Society for Composites 2017. Lancaster, PA: DEStech Publications, Inc., 2017. http://dx.doi.org/10.12783/asc2017/15378.

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Efanov, Dmitrii V., German V. Osadchy, and Valerii V. Khoroshev. "Testing of Optical Sensors in Measuring Systems on Railway Marshalling Yard." In 2018 IEEE East-West Design & Test Symposium (EWDTS). IEEE, 2018. http://dx.doi.org/10.1109/ewdts.2018.8524798.

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Fouda, Ahmed, Junwen Dai, and Yunyun Hu. "Multi-Tubular Electromagnetic Corrosion Inspection Tool – Performance Demonstration using Yard Testing." In Abu Dhabi International Petroleum Exhibition & Conference. Society of Petroleum Engineers, 2020. http://dx.doi.org/10.2118/202718-ms.

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Giddens, Jim Leon, Mark Douglas Kalman, Amit Sharma, Rodney Stephens, Michael Chambers, John Martin, David McWhorter, and Jeffrey Melancon. "Yard and Field Testing of a Tapered-OD Coiled-Tubing System." In SPE/ICoTA Coiled Tubing Conference and Exhibition. Society of Petroleum Engineers, 2005. http://dx.doi.org/10.2118/94221-ms.

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La Rosa, Renzo, Jaideep Pandit, Wing Ng, and Brett Barker. "Effects on Heat Transfer Coefficient and Adiabatic Effectiveness in Combined Backside and Film Cooling With Short-Hole Geometry." In ASME Turbo Expo 2019: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/gt2019-91522.

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Abstract Heat transfer experiments were done on a flat plate to study the effect of internal counter-flow backside cooling on adiabatic film cooling effectiveness and heat transfer coefficient. In addition, the effects of density ratio (DR), blowing ratio (BR), diagonal length over diameter (L/D) ratio, and Reynolds number were studied using this new configuration. The results are compared to a conventional plenum fed case. Data were collected up to X/D = 23 where X = 0 at the holes, an S/D = 1.65 and L/D = 1 and 2. Testing was done at low L/D ratios since short holes are normally found in double wall cooling applications in turbine components. A DR of 2 was used in order to simulate engine-like conditions and this was compared to a DR of 0.92 since relevant research is done at similar low DR. The BR range of 0.5 to 1.5 was chosen to simulate turbine conditions as well. In addition, previous research shows that peak effectiveness is found within this range. Infrared (IR) thermography was used to capture temperature contours on the surface of interest and the images were calibrated using a thermocouple and data analyzed through MATLAB software. A heated secondary fluid was used as ‘coolant’ in the present study. A steady state heat transfer model was used to perform the data reduction procedure. Results show that backside cooling configuration has a higher adiabatic film cooling effectiveness when compared to plenum fed configurations at the same conditions. In addition, the trend for effectiveness with varying BR is reversed when compared with traditional plenum fed cases. Yarn flow visualization tests show that flow exiting the holes in the backside cooling configuration is significantly different when compared to flow exiting the plenum fed holes. We hypothesize that backside cooling configuration has flow exiting the holes in various directions, including laterally, and behaving similar to slot film cooling, explaining the differences in trends. Increasing DR at constant BR shows an increase in adiabatic effectiveness and HTC in both backside cooling and plenum fed configurations due to the decreased momentum of the coolant, making film attachment to the surface more probable. The effects of L/D ratio in this study were negligible since both ratios used were small. This shows that the coolant flow is still underdeveloped at both L/D ratios. The study also showed that increasing turbulence through increasing Reynolds number decreased adiabatic effectiveness.

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Poboroniuc, Marian-Silviu, Antonela Curteza, Viorica Cretu, and Laura Macovei. "Designing wearable textile structures with embeded conductive yarns and testing their heating properties." In 2014 International Conference and Exposition on Electrical and Power Engineering (EPE). IEEE, 2014. http://dx.doi.org/10.1109/icepe.2014.6970016.

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Cobden, Geoff, Natala Stroman, and Sean Ely. "Rail Vehicle End of Car Hose Flexibility Testing." In ASME/IEEE 2007 Joint Rail Conference and Internal Combustion Engine Division Spring Technical Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/jrc/ice2007-40031.

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This paper describes how rail vehicle end hoses, that form the connection between the brake equipment on adjacent vehicles, have been traditionally tested for flexibility and a new test method that was recently introduced in The Association of American Railroads Specification (AAR) M-601 [1]. The Railroads had expressed a need to be able to perform both initial hose assembly specification compliance and subsequent quality assurance performance tests under controlled temperature conditions. This led to the development of a new test device and a simplified test procedure, which closely simulates the actions of railroad personnel when connecting end hoses in the train yard. This paper describes how end hoses have traditionally been tested, the evolution of a new test device, and the steps taken to qualify it for acceptance by the AAR as the test method in the recently revised Specification M-601.

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Reports on the topic "Yarn testing"

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Baughman, Alfred, Tyler Bowman, Ross Guttromson, Matthew Halligan, Tim Minteer, Travis Mooney, and Chad Vorse. HEMP Testing of Substation Yard Circuit Breaker Control and Protective Relay Circuits. Office of Scientific and Technical Information (OSTI), September 2020. http://dx.doi.org/10.2172/1669208.

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Wozniak, Christopher D. Analysis, Fabrication, and Testing of a Composite Bladed Propeller for a Naval Academy Yard Patrol (YP) Craft. Fort Belvoir, VA: Defense Technical Information Center, May 2005. http://dx.doi.org/10.21236/ada436648.

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PARSONS ENGINEERING SCIENCE INC DENVER CO. Two-Year Soil Gas Sampling and Respiration Testing Results Report for Full-Scale Bioventing at the POL Yard, Sites SS-06 and ST-40, Wurtsmith AFB, Michigan. Fort Belvoir, VA: Defense Technical Information Center, November 1998. http://dx.doi.org/10.21236/ada384533.

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