Relevant bibliographies by topics / Fibre reinforced plastics testing

Academic literature on the topic 'Fibre reinforced plastics testing'

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Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Fibre reinforced plastics testing"

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Reynolds, W. N. "Nondestructive testing of fibre-reinforced plastics composites." NDT International 21, no. 1 (February 1988): 50. http://dx.doi.org/10.1016/0308-9126(88)90399-9.

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Jüptner, Werner. "Non-destructive testing of fibre-reinforced plastics." Measurement 12, no. 1 (October 1993): 95–112. http://dx.doi.org/10.1016/0263-2241(93)90038-j.

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Marshall, I. H. "Non-destructive Testing of Fibre-reinforced Plastics Composites." Composite Structures 10, no. 3 (January 1988): 268. http://dx.doi.org/10.1016/0263-8223(88)90024-4.

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Bhedasgaonkar, Rahul. "Manufacturing and Mechanical Properties Testing of Hybrid Natural Fibre Reinforced Polymer Composites." International Journal for Research in Applied Science and Engineering Technology 10, no. 6 (June 30, 2022): 2390–96. http://dx.doi.org/10.22214/ijraset.2022.43877.

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Abstract: A composite material is a materials system made up of two or more micro or macro elements with different forms and chemical compositions that are largely insoluble in one another. It basically comprises of two phases: matrix and fiber. Polymers, ceramics, and metals such as nylon, glass, graphite, Aluminium oxide, boron, and aluminium are examples of fibres. In the present research work epoxy is used as matrix and Bamboo, Sugarcane Bagasse and Coconut fibre are used as fibres for preparing the composites. In the preparation of specimen, the fibre as taken as a continuous fibre. The fibre is treated with NaOH solution. Hybrid natural fibre reinforced composites of bamboo, sugarcane baggase and coconut coir has been prepared using hand lay-up process of composite manufacturing. These hybrid composites were tested for determining their tensile and impact strengths. Results of mechanical testing reveals that the tensile strength of Bamboo- Bagasse hybrid composite is more compared to other composites. Taking into consideration of enhanced tensile and impact strength of bamboo-bagasse hybrid natural fibre polymer composite, we recommend the use of hybrid bamboo-bagasse composite in manufacturing of automotive bodies. Because of their unique characteristics of recyclability, waste utilization, biodegradability, good strength, and a viable alternative to plastics, these composites can be used for a variety of applications
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Reynolds, W. N. "Nondestructive testing of fibre-reinforced plastics composites, volume I." Composites 19, no. 2 (March 1988): 167–68. http://dx.doi.org/10.1016/0010-4361(88)90732-x.

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Maier, G., H. Ott, H. Kreil, and R. Stelter. "Testing of wet fibre-reinforced plastics at elevated temperatures." Composites 20, no. 5 (September 1989): 467–70. http://dx.doi.org/10.1016/0010-4361(89)90216-4.

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Finch, Robert D. "Non‐destructive Testing of Fibre‐reinforced Plastics Composites, Vol. 2." Journal of the Acoustical Society of America 92, no. 3 (September 1992): 1792. http://dx.doi.org/10.1121/1.403883.

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McEwan, W. "Non-destructive Testing of Fibre Reinforced Plastics Composites. Vol. 2." Composite Structures 18, no. 4 (January 1991): 399–400. http://dx.doi.org/10.1016/0263-8223(91)90006-k.

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Ciecieląg, Krzysztof, Krzysztof Kęcik, Agnieszka Skoczylas, Jakub Matuszak, Izabela Korzec, and Radosław Zaleski. "Non-Destructive Detection of Real Defects in Polymer Composites by Ultrasonic Testing and Recurrence Analysis." Materials 15, no. 20 (October 20, 2022): 7335. http://dx.doi.org/10.3390/ma15207335.

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This paper presents results of ultrasonic non-destructive testing of carbon fibre-reinforced plastics (CFRPs) and glass-fibre reinforced plastics (GFRPs). First, ultrasonic C-scan analysis was used to detect real defects inside the composite materials. Next, the composite materials were subjected to drilling in the area of defect formation, and measured forces were used to analyse the drilling process using recurrence methods. Results have confirmed that recurrence methods can be used to detect defects formed inside a composite material during machining.
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Niranjan, Raja R., S. Junaid Kokan, R. Sathya Narayanan, S. Rajesh, V. M. Manickavasagam, and B. Vijaya Ramnath. "Fabrication and Testing of Abaca Fibre Reinforced Epoxy Composites for Automotive Applications." Advanced Materials Research 718-720 (July 2013): 63–68. http://dx.doi.org/10.4028/www.scientific.net/amr.718-720.63.

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The natural fibre composite materials are nowadays playing a vital role in replacing the conventional and synthetic materials for industrial applications. This paper proposes a natural fiber composite made of Abaca fibre as reinforcing agent with Epoxy resin as the matrix, manufactured using Hand Lay-up method. Glass Fiber Reinforced Plastics (woven rovings) are used to improve the surface finish and impart more strength and stiffness to natural fibers. In this work, the fibers are arranged in alternative layers of abaca in horizontal and vertical orientation. The mechanical properties of the composite are determined by testing the samples for tensile and flexural strength. It is observed that the tensile strength of the composite material is dependent on the strength of the natural fiber and also on the interfacial adhesion between the reinforcement and the matrix. The composite is developed for automobile dashboard/mudguard application. It may also be extended to biomedical, electronics and sports goods manufacturing. It can also be used in marine products due to excellent resistance of abaca to salt water damage since the tensile strength when it is wet.
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Dissertations / Theses on the topic "Fibre reinforced plastics testing"

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Saka, Kolawole. "Dynamic mechanical properties of fibre reinforced plastics." Thesis, University of Oxford, 1987. http://ora.ox.ac.uk/objects/uuid:0514854d-36db-4cc1-b377-03a75550ab76.

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A small gas gun, capable of accelerating a projectile 1m long by 25.4mm diameter to about 50 m/s, and an extended split Hopklnson bar apparatus have been designed and constructed for the tensile impact testing of fibre reinforced composite specimens at strain rates of the order of 1000/s. Elastic strain measurements derived from the Hopkinson bar analysis are checked, using strain gauges attached directly to the specimen and the validity of the elastic moduli determined under tensile impact is confirmed. Epoxy specimens reinforced with plain-weave fabrics of either carbon or glass or with several hybrid combinations of the two in various lay-ups, giving five different weight fractions of reinforcement from all-carbon to all-glass, have been tested in tension at three strain rates, nominally, ~10-3/s, ~10/s and ~103/s. The effect of both hybrid composition (volume fraction of carbon reinforced plies) and applied strain rate on the tensile modulus, the tensile strength and the strain to fracture is determined and a limited hybrid effect is observed in specimens with a carbon volume fraction in the approximate range 0.6 to 0.7 where, at all three strain rates there is an enhancement of the failure strain over that for the all-carbon plies and an increased failure strength, most marked in the impact tests, over that predicted by the rule of mixtures. The fracture surfaces of specimens are examined by optical and scanning electron microscopy and the failure process in the hybrid composites is related to that found in the all-carbon and the all-glass specimens. The classical laminated plate theory and the Tsai-Wu strength criterion are used to predict the stiffness and strength of the hybrid composites from the elastic and strength properties of the constituent plies. Analytical predictions are in good agreement with experimental measurements.
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Kelly, Gordon. "Joining of Carbon Fibre Reinforced Plastics for Automotive Applications." Doctoral thesis, KTH, Aeronautical and Vehicle Engineering, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3819.

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The introduction of carbon-fibre reinforced plastics in loadbearing automotive structures provides a great potential toreduce vehicle weight and fuel consumption. To enable themanufacture and assembly of composite structural parts,reliable and cost-effective joining technologies must bedeveloped. This thesis addresses several aspects of joining andload introduction in carbon-fibre reinforced plastics based onnon-crimp fabric reinforcement.

The bearing strength of carbon fibre/epoxy laminates wasinvestigated considering the effects of bolt-hole clearance.The laminate failure modes and ultimate bearing strength werefound to be significantly dependent upon the laminate stackingsequence, geometry and lateral clamping load. Significantreduction in bearing strength at 4% hole deformation was foundfor both pin-loaded and clamped laminates. The ultimatestrength of the joints was found to be independent of theinitial bolt-hole clearance.

The behaviour of hybrid (bolted/bonded) joints wasinvestigated both numerically and experimentally. Athree-dimensional non-linear finite element model was developedto predict the load transfer distribution in the joints. Theeffect of the joint geometry and adhesive material propertieson the load transfer was determined through a parameter study.An experimental investigation was undertaken to determine thestrength, failure mechanisms and fatigue life of hybrid joints.The joints were shown to have greater strength, stiffness andfatigue life in comparison to adhesive bonded joints. However,the benefits were only observed in joint designs which allowedfor load sharing between the adhesive and the bolt.

The effect of the environment on the durability of bondedand hybrid joints was investigated. The strength and fatiguelife of the joints was found to decrease significantly withincreased ageing time. Hybrid joints demonstrated increasedfatigue life in comparison to adhesive bonded joints afterageing in a cyclic freeze/thaw environment.

The strength and failure mechanisms of composite laminatessubject to localised transverse loading were investigatedconsidering the effect of the specimen size, stacking sequenceand material system. Damage was found to initiate in thelaminates at low load levels, typically 20-30% of the ultimatefailure load. The dominant initial failure mode wasintralaminar shear failure, which occurred in sub-surfaceplies. Two different macromechanical failure modes wereidentified, fastener pull-through failure and global collapseof the laminate. The damage patterns and ultimate failure modewere found to depend upon the laminate stacking sequence andresin system. Finite element analysis was used to analyse thestress distribution within the laminates and predict first-plyfailure.

Keywords:Composite, laminate, bearing strength,joining, load introduction, hybrid joint, finite elementanalysis, mechanical testing.

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Haberle, Jurgen. "Strength and failure mechanisms of unidirectional carbon fibre-reinforced plastics under axial compression." Thesis, Imperial College London, 1992. http://hdl.handle.net/10044/1/11390.

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Barkley, David. "Instrumentation of impact testing and evaluation of fibre reinforced injection moulded thermoplastics by process-structure-properties correlation." Thesis, Open University, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.328827.

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Sabat, Philippe Jacques. "Evaluation of fiber-matrix interfacial shear strength in fiber reinforced plastics." Thesis, Virginia Polytechnic Institute and State University, 1985. http://hdl.handle.net/10919/77733.

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The role of the interphase in fiberglass reinforced composites was studied by a combination of theoretical analysis, mechanical tests, and several high-resolution analytical techniques. The interphase was varied in composition by using epoxy and polyester matrix polymers with and without added coupling agents, as well as four fiber surface modifications. Different coupling agents on the fibers were shown to change the fiber tensile strength markedly. Filament wound unidirectional composites were tested in short beam "shear." Corresponding samples were fabricated by embedding one to seven fibers in the center of polymer dogbone specimens that were tested in tension to determine critical fiber lengths. Those values were used in a new theoretical treatment (that combines stress gradient shear-lag theory with Weibull statistics) to evaluate "interfacial shear strengths". The fact that results did not correlate with the short beam data was examined in detail via a combination of polarized light microscopy, electron microscopy (SEM) and spectroscopy (XPS or ESCA) and mass spectroscopy (SIMS). When the single fiber specimens were unloaded, a residual birefringent zone was measured and correlated with composite properties, as well as with SIMS and SEM analysis that identified changes in the locus of interphase failure. Variations in the interphase had dramatic effects upon composite properties, but it appears ·that there may be an optimum level of fiber-matrix adhesion depending upon the properties of both fiber and matrix. Fiber-fiber interactions were elucidated by combining tensile tests on multiple fiber dogbone specimens with high-resolution analytical techniques. In general, this work exemplifies a multidisciplinary approach that promises to help understand and characterize the structure and properties of the fiber-matrix interphase, and to optimize the properties of composite materials.
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Littles, Jerrol W. Jr. "Ultrasonic characterization of Fiber Reinforced Polymeric (FRP) composites." Diss., Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/19160.

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Carlin, Daniel Edward. "Experimental and numerical characterization of damage in FRP beams." Thesis, Georgia Institute of Technology, 1994. http://hdl.handle.net/1853/21465.

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Butz, Travis M. "Tests on pultruded square tubes under eccentric axial load." Thesis, Georgia Institute of Technology, 1997. http://hdl.handle.net/1853/21800.

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Sasher, William C. "Testing, assessment and FRP strengthening of concrete T-beam bridges in Pennsylvania." Morgantown, W. Va. : [West Virginia University Libraries], 2008. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=5876.

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Thesis (M.S.)--West Virginia University, 2008.
Title from document title page. Document formatted into pages; contains viii, 177 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 130-136).
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Kumar, Rajesh S. "Effects of damage and viscoelasticity on the constitutive behavior of fiber reinforced composites." Diss., Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/13013.

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Books on the topic "Fibre reinforced plastics testing"

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John, Summerscales, ed. Non-destructive testing of fibre-reinforced plastics composites. London: Elsevier Applied Science, 1987.

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Wachter, Friedrich K. von. Ein Beitrag zur Automatisierung der zerstörungsfreien Ultraschallprüfung von Faserverbundkunststoffen. Aachen: Ch. Shaker, 1992.

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

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Perzak, F. J. Fire tests of rigid plastic ventilation ducts. Pittsburgh, Pa: U.S. Dept. of the Interior, Bureau of Mines, 1987.

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Kuzik, Marc D. Out-of-plane cyclic behavior of masonry walls reinforced externally with GFRP. Edmonton: Dept. of Civil and Environmental Engineering, University of Alberta, 1999.

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Ye, Binshan. Characteristics of glass fiber-reinforced composite materials for use in roadside safety barriers. McLean, Va. (6300 Georgetown Pike, McLean 22101-2296): U.S. Dept. of Transportation, Federal Highway Administration, Research and Development, Turner-Fairbank Highway Research Center, 1994.

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Hildebrand, Martin. A comparison of FRP-sandwich penetrating impact test methods. Espoo: VTT, Technical Research Centre of Finland, 1996.

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Grace, Nabil F. Environmental/durability evaluation of FRP composite strengthened bridges. Southfield, Mich: Lawrence Technological University, Civil Engineering Dept., 2003.

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Egan, Margaret R. Thermal decomposition of ventilation ducting. Washington, DC: Dept. of the Interior, 1990.

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Egan, Margaret R. Thermal decomposition of ventilation ducting. Pgh. [i.e. Pittsburgh] PA: United States Dept. of the Interior, Bureau of Mines, 1990.

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Book chapters on the topic "Fibre reinforced plastics testing"

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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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Rief, B., G. Busse, and P. Eyerer. "Nondestructive Testing of Carbon Fibre Reinforced Plastics (CFRP) by Thermal Wave Radiometry." In Photoacoustic and Photothermal Phenomena, 447–50. Berlin, Heidelberg: Springer Berlin Heidelberg, 1988. http://dx.doi.org/10.1007/978-3-540-48181-2_119.

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Lorsch, P., M. Sinapius, and Peter Wierach. "Methodology for the high-frequency testing of fiber-reinforced plastics." In Fatigue of Materials at Very High Numbers of Loading Cycles, 487–509. Wiesbaden: Springer Fachmedien Wiesbaden, 2018. http://dx.doi.org/10.1007/978-3-658-24531-3_22.

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Schäfer, Matthias, Franz Dietrich, and Klaus Dröder. "Behavior of the Amplitude Signal by Testing Fiber-Reinforced Plastics Using Air-Coupled Ultrasound." In Advances in Production Research, 402–11. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-03451-1_40.

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Morton-Jones, D. H. "Fibre reinforced plastics." In Polymer Processing, 220–36. Dordrecht: Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-0815-4_12.

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Mayer, Rayner M. "Testing and standards." In Design with Reinforced Plastics, 145–75. Dordrecht: Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-2210-8_7.

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Hancox, Neil L., and Rayner M. Mayer. "Mechanical Properties of Aligned Fibre Composites." In Design Data for Reinforced Plastics, 96–132. Dordrecht: Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-011-0707-5_5.

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Wilson, Runcy, Gejo George, Tomlal Jose E, and Kuruvilla Joseph. "Recycling of Synthetic Fibre Reinforced Plastics." In Composites Science and Technology, 143–68. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-3627-1_7.

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Hirai, Tsuneo. "Rheology of Carbon Fibre Composite Prepreg Materials." In Developments in Reinforced Plastics—5, 233–65. Dordrecht: Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-4179-3_8.

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McGrath, G. C. "Fracture and toughening in fibre reinforced polymer composites." In Rubber Toughened Engineering Plastics, 57–89. Dordrecht: Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-011-1260-4_3.

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Conference papers on the topic "Fibre reinforced plastics testing"

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Kusano, Masahiro, Hideki Hatano, Kanae Oguchi, Hisashi Yamawaki, Makoto Watanabe, and Manabu Enoki. "Mid-IR laser ultrasonic testing for fiber reinforced plastics." In 44TH ANNUAL REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION, VOLUME 37. Author(s), 2018. http://dx.doi.org/10.1063/1.5031634.

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Nezadal, Martin, Jan Schur, and Lorenz-Peter Schmidt. "Non-destructive testing of glass fibre reinforced plastics with a full polarimetric imaging system." In 2014 39th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz). IEEE, 2014. http://dx.doi.org/10.1109/irmmw-thz.2014.6956128.

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Mayr, G., K. H. Gresslehner, and G. Hendorfer. "Non-destructive testing procedure for porosity determination in carbon fibre reinforced plastics using pulsed thermography." In 2016 Quantitative InfraRed Thermography. QIRT Council, 2016. http://dx.doi.org/10.21611/qirt.2016.081.

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Rabe, Ute, T. Helfen, Miriam Weikert, Sigrun Hirsekorn, Hans-Georg Herrmann, Christian Boller, Daniel Backe, Frank Balle, and Dietmar Eifler. "Nonlinear ultrasonic testing of carbon fibre reinforced plastics in the very high cycle fatigue regime." In XVII International Conference on Nonlinear Elasticity in Materials. ASA, 2012. http://dx.doi.org/10.1121/1.4748345.

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Nezadal, Martin, Jan Schur, and Lorenz-Peter Schmidt. "Non-destructive testing of glass fibre reinforced plastics with a synthetic aperture radar in the lower THz region." In 2012 37th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz 2012). IEEE, 2012. http://dx.doi.org/10.1109/irmmw-thz.2012.6380301.

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John, Sebastian, René Eisermann, and Georg Mair. "Application of an Experimental Modal Analysis on Composite Pressure Vessels for Monitoring Prestress Conditions." In ASME 2018 Noise Control and Acoustics Division Session presented at INTERNOISE 2018. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/ncad2018-6143.

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Due to high specific stiffness, fibre reinforced plastics are the dominant material group for the design of mobile pressure vessels. At the Federal Institute for Materials Research and Testing (BAM) aging process of composite pressure vessels is studied to be able to give more accurate lifetime predictions in future. Investigations are based on type III breathing air cylinders consisting of an aluminium tank which is fully wrapped with carbon fibre reinforced plastics. The goal is to detect changes of residual stresses over life time which directly affect fatigue strength. Within this paper an approach is presented to monitor residual stresses via an experimental modal analysis (EMA). First, the influence of changed stress conditions on modal parameters is analysed via a numerical study. Secondly, a test bench for an EMA is set up. To be able to analyse cylinders of different prestress condition, several specimens are prestress modified via high-temperature and high-pressure treatment. During the modification processes, specimens are monitored via optical fibres to control prestress modifications. Through experimental measurements of the modified specimens via EMA changes in prestressing can be detected. Finally, the validity and accuracy of the EMA is evaluated critically by comparing all numerically and experimentally obtained data.
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Wei, Daoxiang, Yuqing Yang, Jun Si, and Xiang Wen. "Study on Acoustic Emission Detection Technology of Fiber Reinforced Plastic Pressure Vessel." In ASME 2020 Pressure Vessels & Piping Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/pvp2020-21088.

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Abstract Fiber reinforced plastics are used in pressure vessel manufacturing because of their high strength and corrosion resistance.Defects may occur in the manufacture and use of the pressure vessel. To ensure safe operation of the pressure vessel, it is necessary to conduct periodic safety assessment of the pressure vessel put into operation. It is difficult to evaluate the safety status of fiber-reinforced plastic pressure vessels by conventional nondestructive testing.Acoustic emission detection technology is a dynamic detection method, which has obvious advantages for the performance and fracture process of fiber reinforced plastic materials. ASME section V or ASTM section on acoustic emission detection of FRP pressure vessels, in which the localization of defects is mainly based on acoustic emission instruments. Due to the anisotropy of FRP material, the instrument can only give the area of the defect, and then use other non-destructive testing methods supplementary detection, so the author proposes a regional positioning method, which can locate defects more accurately. In this paper, acoustic emission detection method and lead breaking method were used to simulate the deficiency, and acoustic velocity attenuation and variation of fiber reinforced plastics were studied, and confirmative tests were carried out to obtain the positioning accuracy of the deficiency in different areas.In order to achieve the acoustic emission (AE) response behavior of stretching damage of glass fiber composites with fiber pre-broken and weak bonding, stretching tests and real-time AE monitoring of glass fiber composites were conducted.Experimental results showed that damage model such as matrix cracking and fiber fracture and bending could be occurred in the process of damage and failure. The composition and content of signal frequency of AE is also different because of difference of preset defect.
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Renner, Axel, Wolf-Joachim Fischer, and Uwe Marschner. "A New Imaging Approach to In Situ and Ex-Situ Inspections of Fibre Reinforced Composites by Magnetic Induction Tomography (MIT)." In ASME 2012 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/smasis2012-8231.

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Fiber reinforced composites (FRP) for industrial applications face constantly increasing demands regarding efficiency, reliability and economy. Furthermore, it was shown that FRP’s with tailored reinforcements are superior to metallic or monolithic materials. However, a trustworthy description of load-specific failure behaviour and damage evolution of composite structures can hardly be given, because these processes are very complex and are still not entirely understood. Amongst other things, several research groups have shown that material damages like fiber fracture, delamination, matrix cracking or flaws can be discovered by analyzing the electrical properties of conducting composites, e.g. carbon fiber reinforced plastics (CFRP). Furthermore, it was shown that this method could be used for structural health monitoring or non-destructive testing (NDT) [8–12].Within this work, Magnetic Induction Tomography (MIT), which is a new imaging approach, is introduced into the topic of NDT of CFRP’s. This non-contacting imaging method gains the inner spatial distribution of conductivity of a specimen and depicts material inhomogeneity, like damages, in 2D or 3D images. Numerical and experimental investigations are presented and give a first impression of the performance of this technique. It is demonstrated that MIT is a promising approach for NDT and could be used for fabrication quality control of conductive FRP’s and could potentially be used as a health monitoring system using an integrated setup.
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Prakash, Raghu V., and Vishnu Viswanath. "Effect of Moisture Absorption on the Tensile and Flexural Properties of Glass Fiber Reinforced Composite Materials." In ASME 2021 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/imece2021-69865.

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Abstract The use of Glass fiber reinforced plastics (GFRP) in underwater applications has been increasing in recent times, due to its superior durability and chemical stability in corrosive environments compared to metals. However, penetration of moisture in to the polymer matrix can adversely affect the mechanical properties of composite materials. In this study, the effect of exposure to plain water and simulated sea water (3.5% by weight NaCl salt) water on the mechanical properties of GFRP specimens has been analyzed. Tensile and three point bend tests were conducted on composite specimens with different moisture contents to characterize the mechanical degradation due to moisture absorption. Gravimetric tests were conducted on specimens to calculate the moisture absorption parameters. The results indicate that plain water is absorbed at a faster rate compared to salt water. Using these parameters, a transient moisture diffusion model was developed using commercial finite element software ABAQUS®. The results of tensile and three point bend testing indicate that both tensile and flexural properties of glass fiber reinforced epoxy composites degrade with exposure to plain water and salt water. Further, a coupled hygro-mechanical model was developed in ABAQUS® and the simulation results were compared with actual test results. Scanning electron Microscopy was used to examine the fracture surface of failed specimens. The cause for mechanical degradation seems to be the deterioration of fiber-matrix interface due to the penetration of water molecules.
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WANG, XIANGMING, and LIANGCHI ZHANG. "MACHINING DAMAGE IN UNIDIRECTIONAL FIBRE-REINFORCED PLASTICS." In Proceedings of the Third International Conference on Abrasive Technology (ABTEC '99). WORLD SCIENTIFIC, 1999. http://dx.doi.org/10.1142/9789812817822_0058.

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Reports on the topic "Fibre reinforced plastics testing"

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Salmeron Perez, N., R. M. Shaw, and M. R. L. Gower. Mechanical testing of fibre-reinforced polymer matrix composites at cryogenic temperatures (-165ºC). National Physical Laboratory, November 2022. http://dx.doi.org/10.47120/npl.mat112.

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Salmeron Perez, N., R. M. Shaw, and M. R. L. Gower. Mechanical testing of fibre-reinforced polymer matrix composites at cryogenic temperatures. Requirements for mechanical test capability at -269°C (4 K). National Physical Laboratory, June 2022. http://dx.doi.org/10.47120/npl.mat102.

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Whisler, Daniel, Rafael Gomez Consarnau, and Ryan Coy. Novel Eco-Friendly, Recycled Composites for Improved CA Road Surfaces. Mineta Transportation Institute, July 2021. http://dx.doi.org/10.31979/mti.2021.2046.

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Abstract:
The continued use of structural plastics in consumer products, industry, and transportation represents a potential source for durable, long lasting, and recyclable roadways. Costs to dispose of reinforced plastics can be similar to procuring new asphalt with mechanical performance exceeding that of the traditional road surface. This project examines improved material development times by leveraging advanced computational material models based on validated experimental data. By testing traditional asphalt and select carbon and glass reinforced composites, both new and recycled, it is possible to develop a finite element simulation that can predict the material characteristics under a number of loads virtually, and with less lead time compared to experimental testing. From the tested specimens, composites show minimal strength degradation when recycled and used within the asphalt design envelopes considered, with an average of 49% less wear, two orders of magnitude higher compressive strength, and three orders for tensile strength. Predictive computational analysis using the validated material models developed for this investigation confirms the long-term durability.
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REVIEW OF VARIOUS SHEAR CONNECTORS IN COMPOSITE STRUCTURES. The Hong Kong Institute of Steel Construction, December 2021. http://dx.doi.org/10.18057/ijasc.2021.17.4.8.

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Abstract:
Shear connectors are devices that provide shear connection at the interface of steel girders and reinforced concrete slabs in composite structures to accomplish composite action in a flexure. The seismic response of composite structures can be controlled using properly designed shear connectors. This state-of-the-art review article presents considerable information about the distinct types of shear connectors employed in composite structures. Various types of shear connectors, their uniqueness and characteristics, testing methods and findings obtained during the last decade are reviewed. The literature, efficacy, and applicability of the different categories of shear connectors, for example, headed studs, perfobond ribs, fibre reinforced polymer perfobonds, channels, pipes, Hilti X-HVB, composite dowels, demountable bolted shear connectors, and shear connectors in composite column are thoroughly studied. The conclusions made provide a response to the flow of the use of shear connectors for their behaviours, strength, and stiffness to achieve composite action.
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