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Journal articles on the topic 'HFVRP'

Author: Grafiati

Published: 28 June 2021

Last updated: 18 February 2022

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1

Yeh, Wei-Chang, and Shi-Yi Tan. "Simplified Swarm Optimization for the Heterogeneous Fleet Vehicle Routing Problem with Time-Varying Continuous Speed Function." Electronics 10, no. 15 (2021): 1775. http://dx.doi.org/10.3390/electronics10151775.

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Transportation planning has been established as a key topic in the literature and practices of social production, especially in urban contexts. To consider traffic environment factors, more and more researchers are taking time-varying factors into account when scheduling their logistic activities. The time-dependent vehicle routing problem (TDVRP) is an extension of the classical Vehicle Routing Problem with Time Windows (VRPTW) by determining a set of optimal routes serving a set of customers within specific time windows. However, few of them use the continuous speed function to express the t

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Lukman, Ismanitami, Rosmalina Hanafi, and Syarifuddin M. Parenreng. "Optimasi Biaya Distribusi pada HFVRP Menggunakan Algoritma Particle Swarm Optimization." Jurnal Optimasi Sistem Industri 18, no. 2 (2019): 164. http://dx.doi.org/10.25077/josi.v18.n2.p164-175.2019.

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3

Lee, Keyju, Junjae Chae, Bomi Song, and Donghyun Choi. "A Model for Sustainable Courier Services: Vehicle Routing with Exclusive Lanes." Sustainability 12, no. 3 (2020): 1077. http://dx.doi.org/10.3390/su12031077.

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In Southeast Asian cities, it is common for logistic companies to operate a heterogeneous fleet of delivery vehicles with motorcycles being the preferred vehicle to handle the final phase of delivery. In such scenarios, heterogeneous fleet vehicle routing problem (HFVRP) is generally applied to plan an optimal delivery. However, in many downtown cores of large and rapidly developing Southeast Asian cities, HFVRP is neither viable nor reliable because of road usage restrictions. The purpose of this article is to develop and test a different approach that accurately takes these restrictions into

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4

Paramestha, D. L., and B. Santosa. "Developing cross entropy genetic algorithm for solving Two-Dimensional Loading Heterogeneous Fleet Vehicle Routing Problem (2L-HFVRP)." IOP Conference Series: Materials Science and Engineering 337 (April 2018): 012001. http://dx.doi.org/10.1088/1757-899x/337/1/012001.

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Domínguez Rivero, Oscar L., Angel A. Juan Pérez, Ignacio A. de la Nuez Pestana, and Djamila Ouelhadj. "An ILS-biased randomization algorithm for the two-dimensional loading HFVRP with sequential loading and items rotation." Journal of the Operational Research Society 67, no. 1 (2016): 37–53. http://dx.doi.org/10.1057/jors.2015.48.

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Kaewman, Sasitorn, and Raknoi Akararungruangkul. "Heuristics Algorithms for a Heterogeneous Fleets VRP with Excessive Demand for the Vehicle at the Pickup Points, and the Longest Traveling Time Constraint: A Case Study in Prasitsuksa Songkloe, Ubonratchathani Thailand." Logistics 2, no. 3 (2018): 15. http://dx.doi.org/10.3390/logistics2030015.

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This paper presents a methodology to solve a special case of the vehicle routing problem (VRP) called the heterogeneous fleets VRP with excessive demand of the vehicle at the pickup points, and the longest time constraint (HFVRP-EXDE-LTC). We developed two metaheuristics—a differential evolution (DE) algorithm and an adaptive large neighborhood search (ALNS)—to solve the problem. These two proposed methods have been designed to effectively solve a special case of VRP. From the computational results, we can see that the proposed heuristics outperformed the best practices that are currently in u

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Arpini, Bianca Passos, and Rodrigo Alvarenga Rosa. "Planejamento da logística de suprimento de plataformas Offshore por meio de um modelo matemático 2L-CVRP com frota heterogênea e equilíbrio náutico." TRANSPORTES 23, no. 4 (2015): 67. http://dx.doi.org/10.14295/transportes.v23i4.920.

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<p>No Brasil a exploração de petróleo ocorre, sobretudo, no mar onde são implantadas plataformas <em>offshore</em> que estão distantes da costa. Logo, é fundamental planejar a logística de suprimento por meio de navios. Este artigo propõe um modelo matemático de Programação Linear Inteira Mista denominado <em>Weight Balance Two-Dimensional Loading Heterogeneous Fleet Vehicle Routing Problem</em> (WB2L-HFVRP) aplicado ao planejamento da logística de suprimento de plataformas <em>offshore</em> visando a criação de rotas que considerem o equilíbrio náutic

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KIM, Injune, Hwan-Gyu KIM, Hyun KIM, et al. "Hepatic expression, synthesis and secretion of a novel fibrinogen/angiopoietin-related protein that prevents endothelial-cell apoptosis." Biochemical Journal 346, no. 3 (2000): 603–10. http://dx.doi.org/10.1042/bj3460603.

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Using degenerate PCR we isolated a cDNA encoding a novel 406- and 410-amino acid protein from human and mouse embryonic cDNAs and have designated it ‘hepatic fibrinogen/angiopoietin-related protein’ (HFARP). The N-terminal and C-terminal portions of HFARP contain the characteristic coiled-coil domains and fibrinogen-like domains that are conserved in angiopoietins. In human and mouse tissues, HFARP mRNA is specifically expressed in the liver. HFARP mRNA and protein are mainly present in the hepatocytes. HFARP has a highly hydrophobic region at the N-terminus that is typical of a secretory sign

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Jilcott Pitts, Stephanie, Qiang Wu, Kimberly Truesdale, et al. "One-Year Follow-Up Examination of the Impact of the North Carolina Healthy Food Small Retailer Program on Healthy Food Availability, Purchases, and Consumption." International Journal of Environmental Research and Public Health 15, no. 12 (2018): 2681. http://dx.doi.org/10.3390/ijerph15122681.

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We examined the short-term impact of the North Carolina Healthy Food Small Retailer Program (HFSRP), a legislatively appropriated bill providing funding up to $25,000 to small food retailers for equipment to stock and promote healthier foods, on store-level availability and purchase of healthy foods and beverages, as well as customer dietary patterns, one year post-policy implementation. We evaluated healthy food availability using a validated audit tool, purchases using customer bag-checks, and diet using self-reported questionnaires and skin carotenoid levels, assessed via Veggie Meter™, a n

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Ali, Afsar, Mohammed H. Rashid, and David K. R. Karaolis. "High-Frequency Rugose Exopolysaccharide Production by Vibrio cholerae." Applied and Environmental Microbiology 68, no. 11 (2002): 5773–78. http://dx.doi.org/10.1128/aem.68.11.5773-5778.2002.

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ABSTRACT Vibrio cholerae can shift to a “rugose” phenotype, thereby producing copious exopolysaccharide (EPS), which promotes its environmental survival and persistence. We report conditions that promote high-frequency rugose EPS production (HFRP), whereby cells switch at high frequency (up to 80%) to rugose EPS production. HFRP appeared to be more common in clinical strains, as HFRP was found in 6 of 19 clinical strains (32%) (including classical, El Tor, and non-O1 strains) but in only 1 of 16 environmental strains (6%). Differences were found between strains in rugose colony morphology, con

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Zeng, Lingmin, and Hugo F. Franzen. "The crystal structure of HfZrP." Journal of Alloys and Compounds 270, no. 1-2 (1998): 119–22. http://dx.doi.org/10.1016/s0925-8388(98)00522-2.

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12

Siriluk, Sanyawit, Qudeer Hussain, Winyu Rattanapitikon, and Amorn Pimanmas. "Shear Strengthening of Reinforced Concrete Beams with HFRP Composite." Materials Science Forum 860 (July 2016): 152–55. http://dx.doi.org/10.4028/www.scientific.net/msf.860.152.

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This paper presents an experimental study on the strengthening of scaled reinforced concrete (RC) deep beam using hemp fiber reinforced polymer (HFRP) composite. HFRP is the composite material which compose of hemp fiber bonding with epoxy resin. The major benefit of using hemp fiber is that their low price, high toughness, and hemp is natural fiber product which that can be found locally. In this study 2 different fiber orientation has been apply to scaled deep beam and also different in thickness (fiber layer). Three scaled deep beam were strengthened using HFRP composite, remaining one beam

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Mayookh Lal, Hiran, Guijun Xian, Sabu Thomas, Lei Zhang, Zhonghui Zhang, and Huili Wang. "Experimental Study on the Flexural Creep Behaviors of Pultruded Unidirectional Carbon/Glass Fiber-Reinforced Hybrid Bars." Materials 13, no. 4 (2020): 976. http://dx.doi.org/10.3390/ma13040976.

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Unidirectional pultruded glass/carbon hybrid fiber-reinforced polymer (HFRP) bars with a diameter of 19 mm have recently been developed for various structural applications. In this study, the creep behavior of HFRP bars caused by bending was experimentally evaluated under different conditions. Our creep study included freeze–thaw preconditioned and unconditioned HFRP bars. The rate of strain and deflection were monitored continuously for a duration of 5000 h. The bars were further tested for creep under the combined effects of mechanical loading and induced thermal cycles, while continuously m

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Urbański, Marek. "Compressive Strength of Modified FRP Hybrid Bars." Materials 13, no. 8 (2020): 1898. http://dx.doi.org/10.3390/ma13081898.

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A new type of HFRP hybrid bars (hybrid fiber reinforced polymer) was introduced to increase the rigidity of FRP reinforcement, which was a basic drawback of the FRP bars used so far. Compared to the BFRP (basalt fiber reinforced polymer) bars, modification has been introduced in HFRP bars consisting of swapping basalt fibers with carbon fibers. One of the most important mechanical properties of FRP bars is compressive strength, which determines the scope of reinforcement in compressed reinforced concrete elements (e.g., column). The compression properties of FRP bars are currently ignored in t

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15

Protchenko, Kostiantyn, Fares Zayoud, Marek Urbański, and Elżbieta Szmigiera. "Tensile and Shear Testing of Basalt Fiber Reinforced Polymer (BFRP) and Hybrid Basalt/Carbon Fiber Reinforced Polymer (HFRP) Bars." Materials 13, no. 24 (2020): 5839. http://dx.doi.org/10.3390/ma13245839.

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The use of sustainable materials is a challenging issue for the construction industry; thus, Fiber Reinforced Polymers (FRP) is of interest to civil and structural engineers for their lightweight and high-strength properties. The paper describes the results of tensile and shear strength testing of Basalt FRP (BFRP) and Hybrid FRP (HFRP) bars. The combination of carbon fibers and basalt fibers leads to a more cost-efficient alternative to Carbon FRP (CFRP) and a more sustainable alternative to BFRP. The bars were subjected to both tensile and shear strength testing in order to investigate their

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16

Chun, Qing, and Jian Wu Pan. "Experimental Study on Bending Behavior of Timber Beams Reinforced with CFRP/AFRP Hybrid FRP Sheets." Advanced Materials Research 255-260 (May 2011): 728–32. http://dx.doi.org/10.4028/www.scientific.net/amr.255-260.728.

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Based on the experiment of timber rectangle beams made of pine and fir reinforced with CFRP/AFRP hybrid FRP (HFRP) sheets. The failure modes and bending bearing capacity and load-deflection curves and strain distribution at mid-span section were analyzed. The results showed that: Comparing with the specimens without being reinforced by HFRP, there is certain improvement in bending bearing capacity and stiffness of the specimens reinforced with HFRP respectively. Bending bearing capacity of the pine specimens improve 18.1%~62.0% and bending bearing capacity of the fir specimens improve 7.7%~29.

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17

Szmigiera, E. D., K. Protchenko, M. Urbański, and A. Garbacz. "Mechanical Properties of Hybrid FRP Bars and Nano-Hybrid FRP Bars." Archives of Civil Engineering 65, no. 1 (2019): 97–110. http://dx.doi.org/10.2478/ace-2019-0007.

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AbstractThe paper describes the recent developments of Hybrid Fibre-Reinforced Polymer (HFRP) and nano-Hybrid Fibre-Reinforced Polymer (nHFRP) bars. Hybridization of less expensive basalt fibres with carbon fibres leads to more sustainable alternative to Basalt-FRP (BFRP) bars and more economically-efficient alternative to Carbon-FRP (CFRP) bars. The New-Developed HFRP bars were subjected to tensile axial loading to investigate its structural behaviour. The effect of hybridization on tensile properties of HFRP bars was verified experimentally by comparing the results of tensile test of HFRP ba

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Protchenko, Kostiantyn, Elżbieta Szmigiera, Marek Urbański, and Andrzej Garbacz. "Development of Innovative HFRP Bars." MATEC Web of Conferences 196 (2018): 04087. http://dx.doi.org/10.1051/matecconf/201819604087.

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The main factors determining the choice of fiber-reinforced polymer (FRP) materials are the intended use of the designed structure and the environmental conditions in which it will be located. Currently, the FRP-based materials have a variety of applications in the construction industry, from the secondary structural elements of buildings, to a complicated designs, where the only FRPs were used. The advances in FRP technology have spurred interest in introducing innovative hybrid fiber-reinforced polymer (HFRP), which potentially can be used as reinforcing/enhancing material. This paper descri

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Guo, Yong Chang, and J. H. Xie. "Interface Properties of Cracked RC Beams Strengthened with Prestressed Hybrid FRP - Part I: Crack Height." Advanced Materials Research 163-167 (December 2010): 3673–76. http://dx.doi.org/10.4028/www.scientific.net/amr.163-167.3673.

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This study is the first part of investigation into the interfacial mechanics performances of cracked reinforced concrete (RC) beam strengthened with prestressed hybrid fiber reinforced polymer (HFRP). Finite element (FE) analysis models were established for such beams with different concrete crack height in this paper. The analysis results indicate that the existing of the flexural cracks obviously affect the stress distribution in the interface between concrete and HFRP, and a sudden change of the stress would arise at the cracks. For cracked RC beams strengthened with prestressed HFRP, both

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ZENG, L., and H. F. FRANZEN. "ChemInform Abstract: The Crystal Structure of HfZrP." ChemInform 29, no. 36 (2010): no. http://dx.doi.org/10.1002/chin.199836026.

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21

Deng, Zong-cai, and Jiu-ling Qu. "The Experimental Studies on Behavior of Ultrahigh-Performance Concrete Confined by Hybrid Fiber-Reinforced Polymer Tubes." Advances in Materials Science and Engineering 2015 (2015): 1–18. http://dx.doi.org/10.1155/2015/201289.

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This paper conducts axial compression test of ultrahigh performance concrete- (UHPC-) filled hybrid FRP (HFRP) tubes, using the alternating hybrid technology to improve the deformation capacity of FRP tube and measure the axial compressive responses of ultimate strength, strains, and stress-strain curve of confined specimens. The test results show that the local rupture of HFRP tubes did not lead to explosive failure of UHPC cylinder, and its ductility is better than that of UHPC confined by only one type of FRP tube; HFRP tube can effectively improve the compressive strength and ultimate stra

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22

Maoinser, Mohd Azuwan, Faiz Ahmad, Safian Shariff, and Tze Keong Woo. "Effects of Twist Drill Point Angle on Thrust Force and Delamination Factor in Hybrid Fiber Composites Drilling." Applied Mechanics and Materials 564 (June 2014): 501–6. http://dx.doi.org/10.4028/www.scientific.net/amm.564.501.

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Drill point angle of twist drill has a significant effect on thrust force and delamination factor on drilled holes in fiber reinforced polymer (FRP) composites. In this study, three drill point angle of twist drill; 85°, 118° and 135° were used to drill holes in hybrid fiber reinforced polymeric composite (HFRP). HFRP composites were fabricated using vacuum infusion molding (VIM) technique. The test samples were cured at 90°C for two hours. In drilling process various drill point angle and feed rate were employed to investigate the effect of both parameters on thrust force and delamination fac

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Johnson, LeeAnn K., Mary B. Brown, Ethan A. Carruthers, John A. Ferguson, Priscilla E. Dombek, and Michael J. Sadowsky. "Sample Size, Library Composition, and Genotypic Diversity among Natural Populations of Escherichia coli from Different Animals Influence Accuracy of Determining Sources of Fecal Pollution." Applied and Environmental Microbiology 70, no. 8 (2004): 4478–85. http://dx.doi.org/10.1128/aem.70.8.4478-4485.2004.

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ABSTRACT A horizontal, fluorophore-enhanced, repetitive extragenic palindromic-PCR (rep-PCR) DNA fingerprinting technique (HFERP) was developed and evaluated as a means to differentiate human from animal sources of Escherichia coli. Box A1R primers and PCR were used to generate 2,466 rep-PCR and 1,531 HFERP DNA fingerprints from E. coli strains isolated from fecal material from known human and 12 animal sources: dogs, cats, horses, deer, geese, ducks, chickens, turkeys, cows, pigs, goats, and sheep. HFERP DNA fingerprinting reduced within-gel grouping of DNA fingerprints and improved alignment

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Wu, Zhi Yun, and Rui Fang Ni. "Experimentally Study on Mechanical Behavior of CF and GF Hybrid Fiber-Reinforced Plastics." Advanced Materials Research 332-334 (September 2011): 1082–86. http://dx.doi.org/10.4028/www.scientific.net/amr.332-334.1082.

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The multiaxial warp-knit fabrics of glass fiber or carbon fiber as the structure materials have widely applied to many industries. In this study, in order to combined the advantages of these two fibers, glass fiber and carbon fiber were employed as reinforcement materials in RIMR 135 epoxy resins, and hybrid composites were formed. The tensile behavior of hybrid fiber-reinforced plastics (HFRP) were compared with CFRP and GFRP on the longitudinal orientation . The results suggested that HFRP was high tensile strength and modulus of elasticity. Scanning electron microscopy was used to character

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MirHassani, S. A., and Z. Saadati. "A reactive adaptive memory metaheuristic for solving HFFVRP." Production & Manufacturing Research 2, no. 1 (2014): 805–30. http://dx.doi.org/10.1080/21693277.2014.955215.

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Złotowska, Magdalena, Roman Nagórski, Piotr Radziszewski, Michał Sarnowski, and Paweł Tutka. "Flexible pavement rehabilitation with continuously reinforced concrete slab with HFRP bars - mechanistic analysis." MATEC Web of Conferences 262 (2019): 05019. http://dx.doi.org/10.1051/matecconf/201926205019.

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Asphalt road pavements are subject to damage under the influence of loads from the traffic of vehicles and of the environmental factors. One of the ways to strengthen damaged flexible pavements is to apply a cement concrete overlay with continuous reinforcement. The purpose of this paper is to analyze the road structure with concrete overlay with continuous reinforcement HFRP composite bars, which is laid on the existing cracked asphalt layers of a typical flexible road of KR3 traffic category. In HFRP bars some of the basalt fibers have been replaced with carbon fibers with the addition of re

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Saha, Abir, Santosh Kumar, Divya Zindani, and Sumit Bhowmik. "Micro-mechanical analysis of the pineapple-reinforced polymeric composite by the inclusion of pineapple leaf particulates." Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications 235, no. 5 (2021): 1112–27. http://dx.doi.org/10.1177/1464420721990851.

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The present study is focused on investigating the effect of the micro-mechanical properties of the natural fiber- (pineapple leaf fiber) reinforced polymeric composites by the addition of pineapple leaf micro-particulates. For the investigation, a two-step approach has been used. In the first step, finite element method-based analysis has been used to characterize the tensile and shear properties of the pineapple leaf fiber-reinforced polymeric composites (FRP) and pineapple paticulate-reinforced polymeric composites (PRC), and the adopted finite element method-based analysis has been validate

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Pan, Jian Wu, and Xi Gui Yuan. "Experimental Study on Mechanical Properties of Basalt Hybrid Fiber Reinforced Polymer Sheets." Advanced Materials Research 466-467 (February 2012): 238–41. http://dx.doi.org/10.4028/www.scientific.net/amr.466-467.238.

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A new type of intermingled basalt hybrid fiber reinforced polymer (BHFRP) sheets were weaved with basalt/carbon(B/C) fiber, or basalt/aramid(B/A) fiber. The ultimate tensile strength, elastic modulus and ductility were studied by experiment, and the mixture ratio on the performance was analyzed based on experimental results. The results showed that: compared B/A HFRP to B/C HFRP, B1A1 had better ductility, but low tensile strength; B2C1 had higher tensile strength and better ductility. Finally, scanning electron microscope was using to study the microscopic structure of fracture surface.

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Pan, Jian Wu. "Experimental Study on Mechanical Properties of Timber Columns Strengthened with Carbon-Aramid Hybrid FRP Sheets under Axial Compression." Advanced Materials Research 255-260 (May 2011): 723–27. http://dx.doi.org/10.4028/www.scientific.net/amr.255-260.723.

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Based on the experiment of timber circular columns made of pine and fir confined by carbon-aramid hybrid FRP (HFRP) sheets under axial compression, the failure modes, axial bearing capacities, peak compression strains were analyzed. The results showed that: Compared to the unconfined specimens, the axial bearing capacities and peak compression strains of the specimens confined by HFRP sheets were all improved. Axial bearing capacities of pine and fir specimens improved 6.6％～16.8％ and 5.0％～16.9％,respectively. Peak compression strains of pine and fir specimens improved 8.9％～60.2％ and 11.5％～56.8％

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Radziszewski, Piotr, Wioletta Jackiewicz-Rek, Michał Sarnowski, and Marek Urbański. "Fortification of Damaged Asphalt Pavements with Cement Concrete Slabs Reinforced with Next-Gen Bars – Part I: Laboratory Study." Archives of Civil Engineering 64, no. 3 (2018): 67–80. http://dx.doi.org/10.2478/ace-2018-0030.

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AbstractOver the course of operation, asphalt road pavements are subjected to damage from car traffic loads and environmental factors. One of the possible methods of strengthening damaged asphalt pavements may be the application of an additional rigid layer in the form of a cement concrete slab with continuous reinforcement.This paper presents a material-technological and structural solution for composite pavement where a cement concrete slab with continuous HFRP bar reinforcement is used for strengthening. Based on laboratory tests, the serviceability of composite bar reinforcement of rigid p

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Protchenko, K., M. Salha, M. Urbański, and P. Narloch. "Compressive Properties of BFRP and HFRP Bars." IOP Conference Series: Materials Science and Engineering 1015, no. 1 (2021): 012091. http://dx.doi.org/10.1088/1757-899x/1015/1/012091.

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Yang, You-long, Jin-wei Liu, and Guang-jing Xiong. "Flexural behavior of wood beams strengthened with HFRP." Construction and Building Materials 43 (June 2013): 118–24. http://dx.doi.org/10.1016/j.conbuildmat.2013.01.029.

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Kalita, Jiban Jyoti, Kalyan Kumar Singh, Nisha Sharma, and Anshul Jain. "Comparative study of tribological behavior of MWCNTs filled HFRP and unfilled HFRP composites under different sliding parameters and different sliding environment." IOP Conference Series: Materials Science and Engineering 455 (December 19, 2018): 012001. http://dx.doi.org/10.1088/1757-899x/455/1/012001.

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Protchenko, Kostiantyn, and Elżbieta Szmigiera. "Post-Fire Characteristics of Concrete Beams Reinforced with Hybrid FRP Bars." Materials 13, no. 5 (2020): 1248. http://dx.doi.org/10.3390/ma13051248.

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One of the main concerns of experimental and numerical investigations regarding the behavior of fiber-reinforced polymer reinforced concrete (FRP-RC) members is their fire resistance to elevated temperatures and structural performance at and after fire exposure. However, the data currently available on the behavior of fiber-reinforced polymer (FRP) reinforced members related to elevated temperatures are scarce, specifically relating to the strength capacity of beams after being subjected to elevated temperatures. This paper investigates the residual strength capacity of beams strengthened inte

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Pan, Jianwu, Xian Wang, and Fang Wu. "Strengthening of Precast RC Frame to Mitigate Progressive Collapse by Externally Bonded CFRP Sheets Anchored with HFRP Anchors." Advances in Civil Engineering 2018 (December 27, 2018): 1–11. http://dx.doi.org/10.1155/2018/8098242.

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Currently, the robustness of precast reinforced concrete frames is attracting wide attention. However, avoiding “strong beams and weak columns” during strengthening against progressive collapse is a key problem. To discuss this problem, an experimental study on two 1/2-scale precast frame subassemblages under a pushdown loading regime was carried out in this paper. One specimen was strengthened with carbon fibre-reinforced polymer (CFRP) sheets on the beam sides. The middle parts of the CFRP sheets were anchored with hybrid fibre-reinforced polymer (HFRP) anchors. Another specimen was not stre

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Ogrodowska, Karolina, Karolina Łuszcz, and Andrzej Garbacz. "The effect of temperature on the mechanical properties of hybrid FRP bars applicable for the reinforcing of concrete structures." MATEC Web of Conferences 322 (2020): 01029. http://dx.doi.org/10.1051/matecconf/202032201029.

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One of the most common causes of the deterioration of concrete structures is the corrosion of steel reinforcement. Reinforcement made from fiber reinforced polymers (FRP) is considered to be an attractive substitution for traditional reinforcement. The most popular FRP reinforcing bars are made of glass fibers. Basalt fiber reinforced polymer (BFRP) is a relatively new material for reinforcing bars. The main drawback of BFRP bars is their low modulus of elasticity. A new type of bar made from hybrid fiber reinforced polymer (HFRP) in which a proportion of the basalt fibers are replaced with ca

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Zhang, Defu, Ruibing Dong, Yain-Whar Si, Furong Ye, and Qisen Cai. "A hybrid swarm algorithm based on ABC and AIS for 2L-HFCVRP." Applied Soft Computing 64 (March 2018): 468–79. http://dx.doi.org/10.1016/j.asoc.2017.12.012.

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Xu, Shun De, Li Juan Li, and Yong Chang Guo. "Study on Experimental Behavior of Concrete Circular Column Confined by HFRP under Axial Compression." Advanced Materials Research 450-451 (January 2012): 491–94. http://dx.doi.org/10.4028/www.scientific.net/amr.450-451.491.

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A loading comparison experimental study on concrete circular columns confined by hybrid fiber sheets of carbon FRP sheet, basalt FRP sheet, and glass FRP sheet is carried out to analyze their failure feature, bearing capacity, ductility and economy. Test results show that HFRP can increase the ductility of column and deduce the price on the precondition of having enough bearing capacity.

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Maoinser, Mohd Azuwan, Faiz Ahmad, and Safian Sharif. "Effects of Cutting Parameters on Hole Integrity when Drilling GFRP and HFRP Composites." Advanced Materials Research 845 (December 2013): 960–65. http://dx.doi.org/10.4028/www.scientific.net/amr.845.960.

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The demand for mechanical fastening in composite materials is increasing due to their potential in large assemblies, aerospace and automotive industries. In practice, small components are integrated into large assemblies drilling holes in composite materials. Drilling defect free holes in composite presents many challenges during part assembly and services. This study presents the effects of cutting parameters used for drilling holes in glass fiber reinforced polymeric (GFRP) composites and hybrid fiber reinforced polymeric (HFRP) composites. Both the composites plates of 3 mm thickness were f

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BEN, Goichi, Kazuhiro SAKATA, and Wataru ISHIDA. "Comparison of Mechanical Properties of HFRTP and HFRP Using Same Fabrics." Journal of the Japan Society for Composite Materials 41, no. 4 (2015): 112–21. http://dx.doi.org/10.6089/jscm.41.112.

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Zhang, Pu, Hong Zhu, Gang Wu, Shaoping Meng, and Zhishen Wu. "Flexural Performance of HFRP-RC Composite T-Beams with Different Interfaces." Journal of Composites for Construction 21, no. 3 (2017): 04016101. http://dx.doi.org/10.1061/(asce)cc.1943-5614.0000757.

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Choi, Yun-Cheul, Hyun-Ki Choi, Dongkeun Lee, and Chang Sik Choi. "Shear Strength of Unreinforced Masonry Wall Retrofitted with Fiber Reinforced Polymer and Hybrid Sheet." International Journal of Polymer Science 2015 (2015): 1–13. http://dx.doi.org/10.1155/2015/863057.

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Unreinforced masonry (URM) structures represent a significant portion of existing historical structures around the world. Recent earthquakes have shown the need for seismic retrofitting for URM structures. Various types of strengthening methods have been used for URM structures. In particular, a strengthening technique using externally bonded (EB) fiber reinforced polymer (FRP) composites has attracted engineers since EB FRP materials effectively enhance the shear strength of URM walls with negligible change to cross-sectional area and weight of the walls. Research has been extensively conduct

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Yaxin, Huang, Chen Haosen, Zhao Qilin, and Liu Yong. "Research on Shear Lag in HFRP Composite I-Beams under Bending Loads." Journal of Reinforced Plastics and Composites 29, no. 2 (2008): 165–78. http://dx.doi.org/10.1177/0731684408096429.

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Ishii, Satoshi, Winfried B. Ksoll, Randall E. Hicks, and Michael J. Sadowsky. "Presence and Growth of Naturalized Escherichia coli in Temperate Soils from Lake Superior Watersheds." Applied and Environmental Microbiology 72, no. 1 (2006): 612–21. http://dx.doi.org/10.1128/aem.72.1.612-621.2006.

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ABSTRACT The presence of Escherichia coli in water is used as an indicator of fecal contamination, but recent reports indicate that soil populations can also be detected in tropical, subtropical, and some temperate environments. In this study, we report that viable E. coli populations were repeatedly isolated from northern temperate soils in three Lake Superior watersheds from October 2003 to October 2004. Seasonal variation in the population density of soilborne E. coli was observed; the greatest cell densities, up to 3 × 103 CFU/g soil, were found in the summer to fall (June to October), and

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Cai, Chen Ning, Shan He, Li Na Liu, and Shi Kun Ou. "Research on Static Load Tests of Damaged Bridge Strengthened with Pre-Stressed HFRP." Advanced Materials Research 1079-1080 (December 2014): 258–65. http://dx.doi.org/10.4028/www.scientific.net/amr.1079-1080.258.

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Thispaper presents an experimental study to strengthen an existing bridge usingpre-stressed carbon fiber reinforced polymer (CFRP) and glass fiber reinforced polymer(GFRP) materials. The method using pre-stressed hybrid fiber reinforced polymer(HFRP) to strengthened structural members is an emerging pre-stressed strengtheningtechnology. In this study, experimental data selected from result of staticloading test conducted to hollow slabs with CFRP/GFRP has been compared with specimenswithout strengthening. Test results showed that the strengthening methoddeveloped in this study could effectivel

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Guo, Yong Chang, Jian He Xie, and Di Liu. "Interface Properties of Cracked RC Beams Strengthened with Prestressed Hybrid FRP - Part II: Crack Location." Advanced Materials Research 243-249 (May 2011): 5483–86. http://dx.doi.org/10.4028/www.scientific.net/amr.243-249.5483.

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This study is the second part of investigation into the interface mechanical performances of cracked reinforced concrete (RC) beams strengthened with prestressed hybrid fiber reinforced polymer (HFRP). Four cases of difference crack location are considered by establishing finite element analysis models to discuss the effort of crack location on the interface stresses in the strengthened beams. The analysis results indicate that the flexural crack obviously changes the distributing of the interface stresses, and an abrupt increase of the stresses arise at the crack location. Moreover, when the

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Xu, Shun De, Li Juan Li, and Yong Chang Guo. "Study on Experimental Behavior of Concrete Circular Column Confined by HFRP under Axial Compression." Advanced Materials Research 450-451 (January 2012): 491–94. http://dx.doi.org/10.4028/scientific5/amr.450-451.491.

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Yang, Shuai, and Xinsheng Xu. "Finite Element Analysis and Influence Factors of Flexural Behavior of HFRP Reinforced Concrete Beams." IOP Conference Series: Earth and Environmental Science 267 (June 8, 2019): 042113. http://dx.doi.org/10.1088/1755-1315/267/4/042113.

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Zhao, Qilin, Haosen Chen, and Bing Yao. "An analytic interfacial stresses solution of simply supported HFRP beam under uniformly distributed loading." Composite Interfaces 14, no. 1 (2007): 33–47. http://dx.doi.org/10.1163/156855407779230317.

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Wang, Xiaomeng, and Chuwei Zhou. "Numerical investigation for the flexural strengthening of reinforced concrete beams with external prestressed HFRP sheets." Construction and Building Materials 189 (November 2018): 804–15. http://dx.doi.org/10.1016/j.conbuildmat.2018.08.219.

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