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Статті в журналах з теми "Fiber Reinforced Ceramics (FRC)":
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Ardana, Emy, and Aries Chandra Trilaksana. "Pasak estetik dari bahan fiber reinforced composite Esthetic post made of fiber reinforced composite materials." Journal of Dentomaxillofacial Science 12, no. 1 (February 28, 2013): 54. http://dx.doi.org/10.15562/jdmfs.v12i1.350.
The prosthetic treatment of seriously damaged teeth after treated with endodontic often require an endodontic post asan additional retention element for core build-up prior to crown restoration. In addition to metal-based posts andzirconia-based ceramic posts, fiber reinforced composite (FRC) post system has become to be widely used in therestoration of endodontically treated teeth. A FRC post offers a number of advantages over a metal post due to itsmodulus of elasticity being closer to that of dentin and superior esthetic quality. Teeth restored with FRC posts showbetter resistance to fracture propagation than teeth restored with prefabricated or cast metal posts. Endodonticallytreated teeth reinforced with a prefabricated fiber post have shown lower incidences of root fracture.
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Alshahrani, Ibrahim, Moshabab A. Asiry, Mohamad K. Altwijry, Sangeetha N. Premanath, Ravikumar Ramakrishnaiah, and Bangalore H. Durgesh. "Nanomechanical properties, surface topography, and color stability of fiber-reinforced composite orthodontic retainers." Polymers and Polymer Composites 27, no. 2 (January 6, 2019): 92–100. http://dx.doi.org/10.1177/0967391118819703.
The present study investigated the nanomechanical properties, surface topography, and color alterations of fiber-reinforced composite (FRC) orthodontic retainers. Two FRC orthodontic retainer materials (glass fiber reinforced (group 1) and polyethylene fiber reinforced (group 2)) were evaluated. Nanomechanical properties (nano-hardness and elastic modulus), surface roughness (Ra), and color stability of FRC retainers at baseline and after 2 years of simulated aging were evaluated. The data collected were analyzed using analyses of variance, followed by Tukey’s honestly significant difference test for post hoc comparisons at the significance level of p < 0.05. Group 1 specimens exhibited highest hardness (0.16 ± 0.06) and elastic modulus (2.68 ± 0.17) at baseline, and group 2 specimens showed lowest hardness (0.09 ± 0.16) and elastic modulus (2.19 ± 0.36) after aging. Significant difference in hardness and elastic modulus was observed between the groups at baseline and after aging ( p < 0.05).The aged specimens demonstrated decreased hardness and elastic modulus values compared to baseline specimens, but the differences were not significant ( p > 0.05). Group 2 specimens exhibited increased Ra at baseline (0.46 ± 0.79) and aging (0.84 ± 0.94), and the least Ra values were observed with group 1 specimens at baseline (0.31 ± 0.87) and aging (0.59 ± 0.65). There was a significant color alteration of the specimens from baseline to aging in both the groups ( p < 0.05). However, group 1 specimens showed noticeable color change, and group 2 showed appreciable color change. Glass fiber-reinforced FRC orthodontic retainer exhibited superior properties compared to polyethylene fiber-reinforced FRC. Accelerated aging decreases surface hardness of the polymer matrix and increases Ra and discoloration of the FRC retainer materials.
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Kim, B., A. J. Boyd, and J. Y. Lee. "Durability performance of fiber-reinforced concrete in severe environments." Journal of Composite Materials 45, no. 23 (April 26, 2011): 2379–89. http://dx.doi.org/10.1177/0021998311401089.
Polypropylene (PP; 0.5%), polyvinyl alcohol (PVA; 0.75%), and hooked-end steel (1%) fibers were investigated to evaluate the durability performance of fiber-reinforced concrete (FRC) exposed to severe environments. Conventional beam specimens (100 × 100 × 360 mm3) were prepared and exposed to three types of conditioning systems for 27 months, in both un-cracked and pre-cracked conditions. Degradation of the FRC was evaluated using visual or photographic inspection, change in permeable pore space, destructive beam testing, scanning electron microscopy analysis, and depth of carbonation measurements. For each of the fiber types and mixtures evaluated, significant surface degradation and carbonation only appeared in specimens exposed to immersion in a low pH solution designed to simulate swamp water. These specimens also exhibited significant degradation in both average residual strength (ARS) and toughness. On the other hand, difficulties in the comparison between pre-cracked specimens and un-cracked specimens were found due to re-adhered or healed pre-cracked specimens from dissolved materials (salt or lime) in solutions. A relatively good resistance to saltwater immersion and w/d conditioning was observed for all fiber types. Among fiber types, steel fibers showed the highest strength to conditioning compared with PP and PVA fibers.
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Lee, Seong-Cheol, Kyung-Joon Shin, and Byung-Hwan Oh. "Cyclic pull-out test of single PVA fibers in cementitious matrix." Journal of Composite Materials 45, no. 26 (September 9, 2011): 2765–72. http://dx.doi.org/10.1177/0021998311417476.
Recently, many studies have been conducted to examine the behavior of fiber-reinforced concrete (FRC) subjected to cyclic loading. However, cyclic and fatigue behavior is so complex that the mechanism of degradation cannot be cleared just by simple mechanical tests such as flexural and tensile tests of FRC specimens that measure typical overall behavior of the material. Besides these kinds of investigations, the individual behavior of the constituents and the interaction between them need to be investigated to reveal the cyclic degradation and fatigue mechanism of FRC detail. So far, only a few experiments have been devoted to the cyclic degradation of fibers in FRC. Therefore, cyclic pull-out behavior of single fiber is investigated in this study. A main objective of this article is to propose a test method for a cyclic pull-out test of a single fiber and to investigate the degradation behavior of single PVA fibers under cyclic loading conditions. Single PVA fibers were tested using quasi-static and cyclic loading methods, and the test results revealed the bridging load of PVA fibers decreases continuously and it become less than half the initial load during the cyclic loading process.
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Kumbuloğlua, Ovul, Niler Özdemira, Gökhan Aksoy, and Atilla User. "A Different Pontic Design for Fiber-Reinforced Composite Bridgeworks: A Clinical Report." European Journal of Dentistry 01, no. 01 (January 2007): 050–53. http://dx.doi.org/10.1055/s-0039-1698312.
ABSTRACTThis clinical report describes a relatively simple but esthetic, non-invasive and functional prosthodontic treatment option for a patient with missing tooth..Methods: Methods: A patient with a missing maxillary left canine was non-invasively treated with a fiber reinforced composite (FRC) bridgework with an all ceramic (Empress II, Ivoclar Vivadent, Schaan, Liechtenstein) pontic design, using laboratory technique.Results: The restoration has served the patient for 2 year, seemingly without discomfort, and it has not required any maintenance. The patient has kept up with his oral hygiene. Conclusions: Although additional clinical experience is necessary, fiber-reinforced composite materials can be used in combination with a lithium disilicate ceramic material in fixed partial dentures. (Eur J Dent 2007,1:50-53)
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Rocca, GT, N. Rizcalla, and I. Krejci. "Fiber-reinforced Resin Coating for Endocrown Preparations: A Technical Report." Operative Dentistry 38, no. 3 (April 1, 2013): 242–48. http://dx.doi.org/10.2341/12-139-tr.
SUMMARY Coronal rehabilitation of endodontically treated posterior teeth is still a controversial issue. Although the use of classical crowns supported by radicular metal posts remains widespread in dentistry, their invasiveness has been largely criticized. New materials and therapeutic options based entirely on adhesion are available nowadays, from direct composite resins to indirect endocrowns. They allow for a more conservative, faster, and less expensive dental treatment. However, the absence of a metal or high-strength ceramic substructure as in full-crown restorations can expose this kind of restoration to a higher risk of irreversible fracture in case of crack propagation. The aim of this case report is to present a technique to reinforce the cavity of an endodontically treated tooth by incorporating a fiber-reinforced composite (FRC) layer into the resin coating of the tooth preparation, before the final impressions of the cavity. This technique allows the use of FRCs in combination with any kind of restorative material for an adhesive overlay/endocrown.
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Naumann, M., A. Preuss, and R. Frankenberger. "Load Capability of Excessively Flared Teeth Restored with Fiber-reinforced Composite Posts and All-ceramic Crowns." Operative Dentistry 31, no. 6 (November 1, 2006): 699–704. http://dx.doi.org/10.2341/05-142.
Clinical Relevance The fracture resistance of excessively flared endodontically-treated teeth (ETT) without ferrule preparation is not acceptable. Adhesively luted FRC posts with 2 mm ferrule are recommended.
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Hassan, Tareq, and AM Aurangjeb. "Comparison of fiber-reinforced composite crowns and metal ceramic crowns according to attrition of opposing teeth." Update Dental College Journal 4, no. 1 (December 7, 2014): 21–26. http://dx.doi.org/10.3329/updcj.v4i1.21161.
Back ground: Fiber reinforcement was introduced to clinical dentistry for the first time in the 1960s when investigators attempted to reinforce polymethyl- methacrylate dentures with glass or carbon fibers. It has recently been shown that crowns, bridges and posts made of FRC can be used successfully in dental practice and they are esthetically more acceptable than conventional metal ceramic crown. Aims: A prospective comparative cross-sectional study was performed involving 60 patients who attended in the out patients department of Prosthodontics, Faculty of Dentistry, BSMMU during the period of January 2007 to December 2008. Objective: Compare fiber-reinforced composite crowns and metal ceramic crowns according to attrition of opposing teeth. Methods: Clinical data were recorded from the randomly selected 60 patients divided in to tow groups experimental and control. Attrition of opposing teeth was indexed after California Dental Associations quality evaluation system. Results: In group A patients, 12(40.0%) were male and 18(60.0%) female. In group B patients 14(46.7%) were male and 16(53.3%) were female. All the patients were in grade I in both groups after 4 months. After 8 months all patients were in grade I in group A and 29(96.7%) patients were in grade I in group B. After 12 months all patients were in grade I in group A and 28(93.3%) patients were in grade I in group B. The difference was not statistically significant (p>0.05) in chi square test. Conclusion: The Fiber Reinforced Composite crown represents a valuable development in field of Prosthetic Dentistry. DOI: http://dx.doi.org/10.3329/updcj.v4i1.21161 Update Dent. Coll. j: 2014; 4 (1): 21-26
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Magne, P., J. Goldberg, D. Edelhoff, and J.-F. Güth. "Composite Resin Core Buildups With and Without Post for the Restoration of Endodontically Treated Molars Without Ferrule." Operative Dentistry 41, no. 1 (January 1, 2016): 64–75. http://dx.doi.org/10.2341/14-258-l.
SUMMARY Objective The aim of this study was to investigate the restoration of highly damaged, broken-down endodontically treated molars without the ferrule effect using glass ceramic crowns on different dual-cure composite resin core buildups. Methods and Materials Thirty (N=30, n=15) decoronated, endodontically treated teeth (no ferrule) were restored without a ferrule with a direct buildup using the dual-curing composite Multicore HB (group MHB) or the dual-curing composite core buildup Multicore Flow in combination with glass-fiber–reinforced composite post (FRC post; group MFP). All teeth were prepared to receive bonded glass ceramic crowns (Empress CAD luted with Variolink II) and were subjected to accelerated fatigue testing. Cyclic isometric loading was applied to the palatal cusp at an angle of 30 degrees and a frequency of 5 Hz, beginning with a load of 200 N (×5000 cycles), followed by stages of 400, 600, 800, 1000, 1200, and 1400 N at a maximum of 30,000 cycles each. Specimens were loaded until failure or to a maximum of 185,000 cycles. Groups were compared using the life table survival analysis (log rank test at p=0.05). Average fracture loads and number of survived cycles were compared with one-way analysis of variance (Scheffé post hoc at p=0.05). Previously published data from the same authors about core buildups made of high-performance polymers (group HPP, n=15) and light-curing composite resin without FRC posts (group TEC, n=15) and with FRC posts (group TECP, n=15) using the same experimental setup were included for comparison. Results None of the tested specimen withstood all 185,000 load cycles. There was no significant difference in mean fracture load (p=0.376), survived cycles (p=0.422), and survival (p=0.613) between MHB (facture load 859.4 N±194.92) and MFP (796.13 N±156.34). Group HPP from a previous study appeared to have significantly higher performance than all other groups except MHB. All groups with posts were affected by an initial failure phenomenon (wide gap at the margin between the buildup/crown assembly and the root). Conclusions HPP and MHB enhanced the performance of all-ceramic leucite-reinforced glass ceramic crowns, and insertion of a fiber-reinforced composite post was not influential when using other materials.
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Özcan, Mutlu, Julia Höhn, Dayanne Duarte Moura, and Rodrigo Souza. "Influence of testing parameters on the load-bearing capacity of prosthetic materials used for fixed dental prosthesis: A systematic review and meta-analysis." Brazilian Dental Science 21, no. 4 (October 24, 2018): 470. http://dx.doi.org/10.14295/bds.2018.v21i4.1652.
<p>The aim of this study was to systematically review the literature to assess static fracture strength tests applied for FDPs and analyze the impact of periodontal ligament (PDL) simulation on the fracture strength. Original scientific papers published in MEDLINE (PubMed) database between 01/01/1981 and 01/06/2010 were included in this systematic review. Data were analyzed considering the test method (static loading), material type (metal-ceramic-MC, oxide all-ceramic-AC, fiber reinforced composite resin-FRC, composite resin-C), PDL (without or with) and restoration type (single crowns, 3-unit, 4-unit, inlay-retained and cantilever FDPs). The selection process resulted in the 72 studies. In total, 377 subgroups revealed results from static load-bearing capacity of different materials. Fourteen metal-ceramic, 190 AC, 121 FRC, 45 C resin groups were identified as subgroups. Slightly decreased results were observed with the presence of PDL for single crowns (without PDL=1117±215 N; with PDL=876±69 N), 3-unit FDPs (without PDL=791±116 N; with PDL=675±91 N) made of AC, 3-unit FDP (without PDL=1244±270 N; with PDL=930±76 N) and inlay-retained FDP (without PDL=848±104 N; with PDL=820±91 N) made of FRC and 4-unit FDPs (without PDL=548±26 N; with PDL=393±67 N) made of C. Overall, for single crowns, fracture strength of FRC was higher than that of AC and MC; for 3-unit FDPs FRC=C>AC=MC; for 4-unit FDPs AC>FRC>C and for inlay-retained FDPs, FRC=AC. An inclination for decreased static fracture strength could be observed with the simulation of PDL but due to insufficient data this could not be generalized for all materials used for FDPs.</p>
The challenges faced in today’s industry require materials capable of working in chemically aggressive environments at elevated temperature, which has fueled the development of oxidation resistant materials. All-Oxide Ceramic Matrix Composites (OCMC) are a promising material family due to their inherent chemical stability, moderate mechanical properties, and low weight. However, limited information exists regarding their behavior when in contact with other high-temperature materials such as superalloys. In this work three sets of tribological tests were performed: two at room temperature and one at elevated temperature (650 °C). The tests were performed in a pin-on-disk configuration testing Inconel 718 (IN-718) pins against disks made with an aluminosilicate geopolymeric matrix composite reinforced with alumina fibers (N610/GP). Two different loads were tested (85 and 425 kPa) to characterize the damage on both materials. Results showed that the pins experienced ~ 100 % wear increase when high temperature was involved, while their microstructure was not noticeably affected near the contact surface. After high temperature testing the OCMC exhibited mass losses two orders of magnitude higher than the pins and a sintering effect under its wear track, that led to brittle behavior. The debris generated consists of alumina and suggests a possible crystallization of the originally amorphous matrix which may destabilize the system. The data suggests that while the composite’s matrix is stable, wear will not develop uncontrollably. However, as soon as a critical load/temperature combination is attained the matrix is the first component to fail exposing the reinforcement to damage which drastically deteriorates the integrity of the component.
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Verma, Ravi Kant. "A study of the damage accumulation process in poly(aryl ether ketone ketone) and it's [sic] AS4 carbon fiber reinforced composites /." This resource online, 1992. http://scholar.lib.vt.edu/theses/available/etd-06112009-063316/.
Mingazzini, Claudio <1970>. "Fiber-reinforced ceramics for thermostructural applications, produced by polymer impregnation pyrolysis." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2014. http://amsdottorato.unibo.it/6349/.
Several CFCC (Continuous Fiber Composite Ceramics) production processes were tested, concluding that PIP (Polymer Impregnation, or Infiltration, Pyrolysis) and CBC (Chemically Bonded Ceramics) based procedures have interesting potential applications in the construction and transportation fields, thanks to low costs to get potentially useful thermomechanical performances.
Among the different processes considered during the Doctorate (from the synthesis of new preceramic polymers, to the PIP production of SiC / SiC composites) the more promising results came from the PIP process with poly-siloxanes on basalt fabrics preforms. Low processing time and costs, together with fairly good thermomechanical properties were demonstrated, even after only one or two PIP steps in nitrogen flow. In alternative, pyrolysis in vacuum was also tested, a procedure still not discussed in literature, but which could originate an interesting reduction of production costs, with only a moderate detrimental effect on the mechanical properties. The resulting CFCC is a basalt / SiCO composite that can be applied for continuous operation up to 600°C, also in oxidant environment, as TG and XRD demonstrated. The failure upon loading is generally pseudo-plastic, being interlaminar delamination the most probable rupture mechanism. . The strength depends on several different factors (microstructure, polymer curing and subsequent ceramic phase evolution, fiber pull-out, fiber strength, fiber percentage) and can only be optimized empirically.
In order to be open minded in selecting the best technology, also CBC (Chemically Bonded Ceramics) matrixes were considered during this Doctorate, making some preliminary investigations on fire-resistant phosphate cements. Our results on a commercial product evidenced some interesting thermomechanical capabilities, even after thermal treatments. However the experiments showed also phase change and possible cracking and deformations even on slow drying (at 130°C) and easy rehydration upon exposure to environmental humidity.
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Yang, Kwan-Ho. "Development of impact testing procedure at elevated temperature /." Thesis, Connect to this title online; UW restricted, 1988. http://hdl.handle.net/1773/7038.
Ishtewi, Ahmad M. "Shear Capacity of Fiber-Reinforced Concrete Under Pure Shear." University of Dayton / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1354725447.
Lam, Su Ki. "Design of tough, metal fibre reinforced ceramics for use at high temperatures." Thesis, University of Cambridge, 2014. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.708380.
Porous ceramics and porous ceramic composites are emerging functional materials
that have found numerous industrial applications, especially in energy conversion
processes. They are characterized by random microstructure and high porosity.
Examples are ceramic candle filters used in coal-fired power plants, gas-fired
infrared burners, anode and cathode materials of solid oxide fuel cells, etc.
In this research, both experimental and theoretical work have been conducted to
characterize and to model the mechanical behavior and durability of this novel
class of functional material. Extensive experiments were performed on a hot gas
candle filter material provided by the McDermott Technologies Inc (MTI). Models at
micro-/meso-/macro- geometric scales were established to model the porous ceramic
material and fiber reinforced porous ceramic material. The effective mechanical
properties are of great technical interest in many applications. Based on the
average field formalism, a computational micromechanics approach was developed to estimate
the effective elastic properties of a highly porous material with random microstructure.
A meso-level analytical model based on the energy principles was developed to estimate
the global elastic properties of the MTI filament-wound ceramic composite tube.
To deal with complex geometry, a finite element scheme was developed for
porous material with strong fiber reinforcements. Some of the model-predicted elastic
properties were compared with experimental values. The long-term performance of ceramic
composite hot gas candle filter materials was discussed. Built upon the stress analysis
models, a coupled damage mechanics and finite element approach was presented to assess
the durability and to predict the service life of the porous ceramic composite
candle filter material. Ph. D.
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Oh, Donghoon. "Vibration control and design of composite cantilevers taking into account structural uncertainties and damage." Diss., This resource online, 1993. http://scholar.lib.vt.edu/theses/available/etd-07282008-142024/.
Hasala, Robert. "Model dentálního můstku vyztuženého vláknovým kompozitem." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2014. http://www.nusl.cz/ntk/nusl-217044.
The diploma thesis aimed to changes of mechanical properties in the influence the use of geometry reinforcement, time delay between cure and measurement. Mechanical properties of model dental bridge observed effect of hydrothermal stress. Dental bridges were reinforced two types of Fiber Reinforced Composites. The first reinforcement had straight unidirectional orientation. The second reinforcement had multidirectional orientation. Mechanical testing was realized in the dependence at the force to deformation model of the dental bridge. Conversion was counted pursuant photo DSC measurement. The character of break was observed at SEM pictures and macro photos. Type of material and reinforcement fibers and their combination had important role at the mechanical properties.
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Shin, Hyunho. "Interface reactions and their influence on properties of SiC fiber-reinforced ceramic matrix composites." Diss., Georgia Institute of Technology, 1994. http://hdl.handle.net/1853/19122.
Topical Symposium III on Advanced Structural Fiber Composites (1994 Florence, Italy). Advanced structural fiber composites: Proceedings of Topical Symposium III on Advanced Structural Fiber Composites of the 8th CIMTEC-World Ceramics Congress and Forum on New Materials, Florence, Italy, June 28 to July 4, 1994. Faenza: TECHNA, 1995.
International Meeting on Modern Ceramics Technologies (8th 1994 Florence, Italy). New horizons for materials: Proceedings of the General Section of the Forum on New Materials of the 8th CIMTEC-World Ceramics Congress and Forum on New Materials, Florence, Italy, June 28 to July 4, 1994. Faenza: TECHNA, 1995.
Henry, Desmond Paul. Development of BEM for ceramic composites: Fourth annual status report, January, 1991 - December 1991 : technical report. Buffalo, N.Y: Calspan-UB Research Center, 1991.
Topical Symposium VII on Advanced Materials in Optics, Electro-Optics and Communication Technologies (1994 Florence, Italy). Advanced materials in optics, electro-optics and communication technologies: Proceedings of Topical Symposium VII on Advanced Materials in Optics, Electro-Optics and Communication Technologies of the 8th CIMTEC-World Ceramics Congress and Forum on New Materials, Florence, Italy, June 28 to July 4, 1994. Faenza: TECHNA, 1995.
Campbell, Christian X. Databook on mechanical and thermophysical properties of fiber-reinforced ceramic matrix composites. West Lafayette, IN: Ceramic Information Analysis Center, Center for Information and Numerical Data Analysis and Synthesis, Purdue University, 1997.
Частини книг з теми "Fiber Reinforced Ceramics (FRC)":
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Vicente, Miguel A., Gonzalo Ruiz, Dorys C. González, Jesús Mínguez, Manuel Tarifa, and Xiaoxing Zhang. "Study of Crack Patterns of Fiber-Reinforced Concrete (FRC) Specimens Subjected to Static and Fatigue Testings Using CT-Scan Technology." In Short Fibre Reinforced Cementitious Composites and Ceramics, 1–18. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-00868-0_1.
Gray, R. J. "Fiber-Matrix Bonding in Steel Fiber-Reinforced Cement-Based Composites." In Fracture Mechanics of Ceramics, 143–55. Boston, MA: Springer US, 1986. http://dx.doi.org/10.1007/978-1-4615-7023-3_11.
Agarwal, Bhagwan D. "Fracture Toughness of Fiber-Reinforced Composites." In Handbook of Ceramics and Composites, 269–305. Boca Raton: CRC Press, 2021. http://dx.doi.org/10.1201/9781003210085-10.
Thornton, Peter H. "The Crush of Fiber-Reinforced Plastics." In Handbook of Ceramics and Composites, 307–37. Boca Raton: CRC Press, 2021. http://dx.doi.org/10.1201/9781003210085-11.
Deluce, J., S. C. Lee, and F. J. Vecchio. "Crack Formation in FRC Structural Elements Containing Conventional Reinforcement." In High Performance Fiber Reinforced Cement Composites 6, 271–78. Dordrecht: Springer Netherlands, 2012. http://dx.doi.org/10.1007/978-94-007-2436-5_33.
Nakano, K., A. Kamiya, S. Yamauchi, and T. Kobayashi. "Fracture Toughness of Carbon Fiber Reinforced Ceramic Composites." In Fracture Mechanics of Ceramics, 123–32. Boston, MA: Springer US, 1992. http://dx.doi.org/10.1007/978-1-4615-3350-4_9.
Marshall, D. B. "NDE of Fiber and Whisker-Reinforced Ceramics." In Review of Progress in Quantitative Nondestructive Evaluation, 1033–45. Boston, MA: Springer US, 1987. http://dx.doi.org/10.1007/978-1-4613-1893-4_119.
Ehrenstein, G. W., A. Schmiemann, A. Bledzki, and R. Spaude. "Corrosion Phenomena in Glass-Fiber-Reinforced Thermosetting Resins." In Handbook of Ceramics and Composites, 231–68. Boca Raton: CRC Press, 2021. http://dx.doi.org/10.1201/9781003210085-9.
Тези доповідей конференцій з теми "Fiber Reinforced Ceramics (FRC)":
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Chorzepa, Mi G., and Amin Yaghoobi. "Innovative Meshless Computational Method for the Analysis of Fiber-Reinforced Concrete (FRC) Structures." In Geotechnical and Structural Engineering Congress 2016. Reston, VA: American Society of Civil Engineers, 2016. http://dx.doi.org/10.1061/9780784479742.101.
Ramos, I., Y. H. Park, and J. Ulibarri-Sanchez. "Stress and Damage Analysis of Fiber-Reinforced Composite Pipe." In ASME 2018 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/pvp2018-84673.
Composite materials are used in many environments due to their special properties such as high strength-to-weight ratio, corrosion resistance and the ability to be tailored to specific requirements. In particular, the use of fiber reinforced composites (FRCs) for pressure vessels/pipes has increased in structural applications such as fuel tanks, pipes, vessels, and rocket motor cases. Assessing failure conditions is important to ensure that these structures do not fail under their operating condition. In this study, an analytical procedure is developed to predict the fatigue behavior of FRC. A numerical model will also be developed and applied to failure analysis under internal pressure loading.
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Filsinger, D., S. Münz, A. Schulz, S. Wittig, and G. Andrees. "Experimental Assessment of Fiber Reinforced Ceramics for Combustor Walls." In ASME 1997 International Gas Turbine and Aeroengine Congress and Exhibition. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/97-gt-154.
Experimental and theoretical work concerning the application of ceramic components in small high temperature gas turbines has been performed for several years. The significance of some non-oxide ceramic materials for gas turbines in particular is based on their excellent high temperature properties. The application of ceramic materials allows an increase of the turbine inlet temperature resulting in higher efficiencies and a reduction of pollution emissions. The inherent brittleness of monolithic ceramic materials can be virtually reduced by reinforcement with ceramic fibers leading to a quasi-ductile behavior. Unfortunately, some problems arise due to oxidation of these composite materials in the presence of hot gas flow containing oxygen. At the Motoren- und Turbinen Union, München GmbH, comprehensive investigations including strength, oxidation, and thermal shock tests of several materials that seemed to be appropriate for combustor liner applications were undertaken. As a result, C/C, SiC/SiC, and two C/SiC-composites coated with SiC, as oxidation protection, were chosen for examination in a gas turbine combustion chamber. To prove the suitability of these materials under real engine conditions, the fiber reinforced flame tubes were installed in a small gas turbine operating under varying conditions. The loading of the flame tubes was characterized by wall temperature measurements. The materials showed different oxidation behavior when exposed to the hot gas flow. Inspection of the C/SiC-composites revealed debonding of the coatings. The C/C- and the SiC/SiC-materials withstood the tests with a maximum cumulated test duration of 90 hours without damage.
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Wang, Jianxiang, Niels B. Thomsen, and Bhushan L. Karihaloo. "Multicriterion Optimization: A Tool in Advanced Materials Technology." In ASME 1994 Design Technical Conferences collocated with the ASME 1994 International Computers in Engineering Conference and Exhibition and the ASME 1994 8th Annual Database Symposium. American Society of Mechanical Engineers, 1994. http://dx.doi.org/10.1115/detc1994-0122.
Abstract This paper will demonstrate on two advanced materials — a fibre-reinforced composite laminate (FRC) and a transformation toughened ceramic (TTC) — the importance of multicriterion optimization in the production of useful advanced materials with enhanced mechanical properties. In a previous paper (Thomsen et al., 1994a), the authors have demonstrated the application of single-criterion optimization to these materials which are based on a brittle matrix and thus prone to cracking at very low applied stresses. The optimization process aims at altering their microstructure so that all their desirable mechanical properties are enhanced. Currently, the advanced materials technologists must take a heuristic approach to meeting the often competing requirements. The present paper will show how multicriterion optimization can come to the aid of the technologists and reduce their reliance on empirical approaches.
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Shahandashti, S. M., B. Abediniangerabi, B. Bell, and S. H. Chao. "Probabilistic Building Energy Performance Analysis of Ultra-High-Performance Fiber-Reinforced Concrete (UHP-FRC) Façade System." In ASCE International Workshop on Computing in Civil Engineering 2017. Reston, VA: American Society of Civil Engineers, 2017. http://dx.doi.org/10.1061/9780784480847.028.
Karmacharya, Ashish, Jean Gamarra, and Shih-Ho Chao. "Use of Ultra-High-Performance Fiber-Reinforced Concrete (UHP-FRC) for Fast and Sustainable Repair of Rigid Pavements." In International Airfield and Highway Pavements Conference 2019. Reston, VA: American Society of Civil Engineers, 2019. http://dx.doi.org/10.1061/9780784482452.027.
Buckley, Richard T., Jason T. Miwa, Donald Radford, and Rudolf H. Stanglmaier. "Design Process for Resin Transfer Molded, Fiber Reinforced Poppet Valves for Internal Combustion Engines." In ASME 2006 Internal Combustion Engine Division Spring Technical Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/ices2006-1319.
A project has been undertaken to design, build and test internal combustion engine poppet valves made from resin transfer molded (RTM) Fiber Reinforced Composites (FRCs). For poppet-valve engines, the valve train mass and stiffness is of particular importance because valve train natural frequency and the onset of valve float and bounce typically limit the engine operating speed. This in turn limits engine power and performance. FRC poppet valves offer the potential for substantial mass reduction as well as increased component stiffness. This enables reduced power consumption by the valve train, and increased overall engine efficiency. Resin transfer molding was chosen because of potential for high-volume production and near-net shape products. Valve design details include; identification of valve operating requirements, fiber orientations, material selection, and evaluation of potential solutions using computerized structural analysis. Mold design includes; mold configuration requirements, fiber placement strategies evaluated, intermediate validation testing done and initial prototype configuration. Results include the final valve design for an exhaust valve, fiber and matrix material selection, fiber placement strategy, and mold configuration. Plans for additional validation testing are presented.
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Abediniangerabi, Bahram, Seyed Mohsen Shahandashti, Bradley Bell, Shih-Ho Chao, and Atefe Makhmalbaf. "Assembly-Scale and Whole-Building Energy Performance Analysis of Ultra-High-Performance Fiber-Reinforced Concrete (UHP-FRC) Façade Systems." In Second International Interactive Symposium on UHPC. Iowa State University Digital Press, 2019. http://dx.doi.org/10.21838/uhpc.9655.
Geiger, Manfred, Norbert Lutz, and Stephan Biermann. "Excimer laser processing of ceramics and fiber-reinforced polymers assisted by a diagnostic system." In ECO4 (The Hague '91), edited by Tommaso Letardi and Lucien D. Laude. SPIE, 1991. http://dx.doi.org/10.1117/12.46936.
Steffens, H. D., M. Brune, E. Müller та R. Dittrich. "The Manufacture of SiC Fiber Reinforced ΑI2O3 Coatings by Plasma Spraying". У ITSC 1996, редактор C. C. Berndt. ASM International, 1996. http://dx.doi.org/10.31399/asm.cp.itsc1996p0311.
Abstract Oftentimes, the application of bulk ceramics and ceramic coatings is limited by their poor fracture toughness and low strength. The mechanical properties of ceramics can be significantly improved by the incorporation of fibres, whiskers or particles of high strength, like SiC. Due to the high oxygen content of commercially available SiC fibers in combination with the elevated process temperatures, the SiC decomposes during plasma spraying. Therefore commercial SiC fibres were coated for temporary oxidation protection with C, TiN or Al2O3. By different agglomeration techniques using an organic binder SiC/Al2O3 composite powders were produced. Powder mixtures consisting of coated fibres and pure alumina as well as agglomerated powders have been successfully sprayed to form deposits. Recent results of the manufacture of SiC fibre-reinforced ceramic composites by plasma spray technology are presented. The properties of the composite coatings are compared to plasma sprayed pure alumina.
Звіти організацій з теми "Fiber Reinforced Ceramics (FRC)":
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Li, Victor C., and Christopher K. Leung. Fiber Reinforced Structural Ceramics for Construction. Fort Belvoir, VA: Defense Technical Information Center, February 1989. http://dx.doi.org/10.21236/ada209976.
Braginsky, M., and Craig P. Przybyla. Dependence of Crack Propagation/Deflection Mechanism on Characteristics of Fiber Coating or Interphase in Ceramics Matrix Continuous Fiber Reinforced Composites (Postprint). Fort Belvoir, VA: Defense Technical Information Center, July 2014. http://dx.doi.org/10.21236/ada610220.
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.
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.
