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Journal articles on the topic 'FRP shapes'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Zureick, A. "FRP pultruded structural shapes." Progress in Structural Engineering and Materials 1, no. 2 (1998): 143–49. http://dx.doi.org/10.1002/pse.2260010206.

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2

Li, Xian, Heng Lin Lv, and Shu Chun Zhou. "Flexural Behavior of Innovative Hybrid GFRP-Reinforced Concrete Beams." Key Engineering Materials 517 (June 2012): 850–57. http://dx.doi.org/10.4028/www.scientific.net/kem.517.850.

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Fiber-reinforced polymer (FRP) bars are emerging as a competitive option for replacing steel bars as reinforcement in various concrete structures exposed to aggressive environments. However, the low elastic modulus and brittleness of FRP bars significantly reduce the stiffness and the ductility of FRP-reinforced concrete (FRP-RC) members. In order to improve the flexural behavior of FRP-RC members and meanwhile ensure their satisfactory corrosion-resistant performance, an innovative FRP-reinforced concrete encased steel composite (FRP-RCS) member, which consists of ductile structural steel sha

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3

Boscato, Giosuè, Ivano Aldreghetti, Daniele Baraldi, et al. "Shape Design Enhancement of Pultruded FRP Profiles for Structures Ancillary to Masonry Constructions." Key Engineering Materials 817 (August 2019): 83–88. http://dx.doi.org/10.4028/www.scientific.net/kem.817.83.

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The historical building heritage, monumental, civil and industrial has highlighted, especially in the last decade, the high vulnerability with respect to horizontal actions. The need to design stable and strong structural systems with respect to the stresses acting in various directions has oriented research to develop lightweight technologies for structural systems, independent or ancillary, with reduced mass to mitigate the consequent applied load. In this scenario all-FRP (Fiber Reinforced Polymers) systems can be a valid alternative for new constructions and / or structural reinforcement.

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Choi, Jin Woo, Seung Sik Lee, Hyung Joong Joo, Young Jong Sim, and Soon Jong Yoon. "Form Factor for the Design of Pultruded FRP Structural Members under Compression." Materials Science Forum 654-656 (June 2010): 2648–51. http://dx.doi.org/10.4028/www.scientific.net/msf.654-656.2648.

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As a new construction material, fiber reinforced polymeric plastic structural shapes are readily available. Therefore, construction and structure rehabilitation using FRP materials are an ever increasing trend because of FRP material’s superior chemical and mechanical properties compared with those of conventional construction materials such as steel and concrete. Among the FRP materials, pultruded fiber reinforced polymeric plastics are the most popular for civil engineering applications. However, it has relatively low modulus of elasticity and also cross-section of structural shapes is compo

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5

Pekbey, Yeliz, and Esmaeil Ghanbari. "Flexural-torsional buckling of FRP thin-walled composite with various sections." Science and Engineering of Composite Materials 21, no. 4 (2014): 537–49. http://dx.doi.org/10.1515/secm-2013-0227.

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AbstractThe flexural-torsional buckling of thin-walled pultruded fiber-reinforced plastic (FRP) members composed of unstiffened, stiffened cruciform- and I-shaped sections under uniform compressive loads was investigated using finite element methods (FEM). As the basic method, an eigenvalue solution using the minimum potential energy method was utilized to obtain the critical buckling stress and buckling mode shapes. FEM results were compared with the closed-form solutions and literature results. Furthermore, a parametric study was carried out to investigate the different cross-section geometr

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Davalos, J. F., H. A. Salim, P. Qiao, R. Lopez-Anido, and E. J. Barbero. "Analysis and design of pultruded FRP shapes under bending." Composites Part B: Engineering 27, no. 3-4 (1996): 295–305. http://dx.doi.org/10.1016/1359-8368(95)00015-1.

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7

Choi, Hoon, Hyung Joong Joo, Jeong Hun Nam, Kyoung Soo Kim, and Soon Jong Yoon. "Structural Design for the Development of the Floating Type Photovoltaic Energy Generation System." Materials Science Forum 654-656 (June 2010): 2803–6. http://dx.doi.org/10.4028/www.scientific.net/msf.654-656.2803.

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In this paper, we present the structural design for the development of the floating type photovoltaic energy generation system using pultruded FRP members. Pultruded FRP has superior material properties compared with those of conventional structural materials. Especially, pultruded FRP has an excellent corrosion-resistance along with high specific strength and stiffness, which are highly appreciated for the design and fabrication of the floating type photovoltaic energy generation system. In the paper, investigations pertaining to the mechanical and structural behaviors of FRP structural membe

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8

Qiao, Pizhong, Julio F. Davalos, and Jialai Wang. "Local Buckling of Composite FRP Shapes by Discrete Plate Analysis." Journal of Structural Engineering 127, no. 3 (2001): 245–55. http://dx.doi.org/10.1061/(asce)0733-9445(2001)127:3(245).

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9

He, Wei, Bing Fu, and Feng-Chen An. "Analysis and Design of Short FRP-Confined Concrete-Encased Arbitrarily Shaped Steel Columns under Biaxial Loading." International Journal of Polymer Science 2018 (November 25, 2018): 1–11. http://dx.doi.org/10.1155/2018/9832894.

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The FRP-confined concrete-encased steel column is a new form of hybrid column, which integrates advantages of all the constituent materials. Its structural performance, including load carrying capacity, ductility, and corrosion resistance, has been demonstrated to be excellent by limited experimental investigation. Currently, no systematic procedure, particularly for that with reinforced structural steel of arbitrary shapes, has been proposed for the sectional analysis and design for such novel hybrid columns under biaxial loading. The present paper aims at filling this research gap by proposi

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10

Lee, Seung Sik, Soon Jong Yoon, S. K. Cho, and Jong Myen Park. "Buckling Behavior of Pultruded Monosymmetric Members." Key Engineering Materials 297-300 (November 2005): 1259–64. http://dx.doi.org/10.4028/www.scientific.net/kem.297-300.1259.

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Pultruded fiber reinforced polymer (FRP) structural members have been used in various civil engineering applications. T-shapes are commonly used for chord members in trusses and for bracing members. In these cases, T-shapes are mainly subjected to axial forces, and stability of a member is one of the major concerns in the design. Due to the monosymmetry existing in the cross-section of T-shapes, T-shapes are likely to buckle in a flexural-torsional mode. An energy solution, using the Ritz method, to the buckling problem of a pulturuded T-shape under uniform compression is derived based on a co

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Arefi, Shahin Lale, Morteza Naghipour, Zenonas Turskis, and Mehdi Nematzadeh. "EVALUATION OF GROOVING METHOD TO POSTPONE DEBONDING OF FRP LAMINATES IN WPC-FRP BEAMS." JOURNAL OF CIVIL ENGINEERING AND MANAGEMENT 20, no. 2 (2014): 237–46. http://dx.doi.org/10.3846/13923730.2013.878379.

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The use of lightweight construction material with high corrosion resistance and low cost plays an important role in the design and construction of marine structures such as waterfronts. One of the most common methods for strengthening the structures is composite fibre reinforced plastic (FRP) sheet that is used for member retrofitting including wood plastic composite (WPC). The WPC material is produced from wood and compressed resin, which has good mechanical properties as well as economic benefits. The main problem of WPC reinforced with FRP sheets is the debonding of the sheet from WPC surfa

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12

Ertuğ, Burcu. "Advanced Fiber-Reinforced Composite Materials for Marine Applications." Advanced Materials Research 772 (September 2013): 173–77. http://dx.doi.org/10.4028/www.scientific.net/amr.772.173.

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Most widely used material in ship hull construction is undoubtedly the steel. Composite materials have become suitable choice for marine construction in 1960s. The usage of the fiber reinforced plastic (FRP) in marine applications offers ability to orient fiber strength, ability to mold complex shapes, low maintenance and flexibility. The most common reinforcement material in marine applications is E-glass fiber. Composite sandwich panels with FRP faces and low density foam cores have become the best choice for small craft applications. The U.S Navy is using honeycomb sandwich bulkheads to red

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13

Choi, Jin Woo, Seong Sik Lee, Hyung Joong Joo, Chang Won Kim, Dong Min Ok, and Soon Jong Yoon. "Design Consideration of the Nonuniform Stress Distribution of Pultruded Structural Member under Compression." Advanced Materials Research 250-253 (May 2011): 3564–70. http://dx.doi.org/10.4028/www.scientific.net/amr.250-253.3564.

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As a new construction material, fiber reinforced polymeric plastic structural shapes are readily available. Therefore, new construction and existing structure rehabilitation using FRP materials are ever increasing trend because of FRP material’s chemical and mechanical properties compared with those of conventional construction materials such as steel and concrete. Among the structural composites, pultruded fiber reinforced polymeric plastic structural members are the most popular for the civil engineering applications because of the cost effectiveness. However, they are made of fiber reinforc

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14

Ragheb, Wael F. "Local buckling analysis of pultruded FRP structural shapes subjected to eccentric compression." Thin-Walled Structures 48, no. 9 (2010): 709–17. http://dx.doi.org/10.1016/j.tws.2010.04.011.

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15

CHEN, Jin xiang, Akinori OGAWA, and Ryosaku HASHIMOTO. "Relationship of anti-symmetrical FRP Rotor Blade Shapes and Twist Resetting Angle." Proceedings of Conference of Kansai Branch 2002.77 (2002): _10–47_—_10–48_. http://dx.doi.org/10.1299/jsmekansai.2002.77._10-47_.

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16

Votsis, R. A., M. M. Abdel Wahab, and M. K. Chryssanthopoulos. "Simulation of Damage Scenarios in an FRP Composite Suspension Footbridge." Key Engineering Materials 293-294 (September 2005): 599–606. http://dx.doi.org/10.4028/www.scientific.net/kem.293-294.599.

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Simulations of damage scenarios were carried out using a finite element model of a newly constructed FRP composite footbridge, the Wilcott footbridge. This footbridge represents a new generation of suspension footbridges that have lightweight decks made of pultruded glass fibre reinforced polymer (GFRP) composite elements. It offers several advantages over conventional steel or concrete footbridges, e.g. speed of installation, high resistance to corrosion and saving in weight and foundations. On the other hand, its lightness and slenderness make it more sensitive to dynamic effects, both at se

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17

Russo, Salvatore. "Bucklings interactions in columns made by built-up thin, open, pultruded FRP shapes." Journal of Reinforced Plastics and Composites 34, no. 12 (2015): 972–88. http://dx.doi.org/10.1177/0731684415584953.

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18

He, Yanli, Joao Paulo Davim, and Yu’e Ma. "2D macro-mechanical FE simulations for machining unidirectional FRP composite: the influence of damage models." Science and Engineering of Composite Materials 23, no. 6 (2016): 659–70. http://dx.doi.org/10.1515/secm-2014-0216.

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AbstractTo investigate the influence of material damage models on machining simulation of unidirectional fiber-reinforced polymer composites (FRP), a two-dimensional (2D) macro-mechanical finite element (FE) model was developed. Four failure criteria in combination with two degradation models were implemented in the machining simulation. The simulation results were compared with experimental data in literature. It is shown that both failure criterion and degradation model have significant influence on the chip shapes, cutting forces and sub-surface damages. The cutting forces and chip shapes p

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19

Swamy, L. Radha, Chinnasamy Senthamaraikannan, and R. Ramesh. "Investigation of the Elastic Modulus Effect on Free Vibration Characteristics of Fiber Reinforced Polymer Composite Beams Made of Various Fundamental Shapes." Advanced Materials Research 1088 (February 2015): 401–6. http://dx.doi.org/10.4028/www.scientific.net/amr.1088.401.

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Woven fiber reinforced polymer composites plays major role in structural applications. Structures subjected to dynamic situations, this leads to increased attention in finding characteristic behaviour/performance of FRP composites beams under vibrating conditions. The objective of this work is to understand and investigate the influence of cross sectional shapes of beams on successive vibration resonance frequencies and its damping performance under cantilever end conditions. The beams were fabricated by hand lay-up method in two different modulus material and cross sections like I and channel

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20

Wen, Bo, Zhenwei Zhou, Bin Zeng, et al. "Pulse-heating infrared thermography inspection of bonding defects on carbon fiber reinforced polymer composites." Science Progress 103, no. 3 (2020): 003685042095013. http://dx.doi.org/10.1177/0036850420950131.

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Non-destructive analysis of fiber reinforced polymer (FRP) composites is important for confirming the long-term safety and durability of concrete structures. In this study, a pulse-heating infrared thermography technique was used to detect and characterize bonding defects of externally bonded carbon fiber reinforced polymers (CFRP) on concrete surface structures. The CFRP composite contains various bonding defects of three different sizes located at five different depths. Sequential thermal images were obtained to describe the temperature contrast and shapes of the bonding defects. Through ana

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21

Wen, H. M. "Predicting the penetration and perforation of FRP laminates struck normally by projectiles with different nose shapes." Composite Structures 49, no. 3 (2000): 321–29. http://dx.doi.org/10.1016/s0263-8223(00)00064-7.

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22

BAO, Limin, Kentarou SUZUKI, and Jian SHI. "Development of a Simple Molding Method for Continuous Fiber Reinforcement FRP in Shapes with Highly Curved Corners." Journal of Textile Engineering 65, no. 2 (2019): 19–24. http://dx.doi.org/10.4188/jte.65.19.

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23

Ragheb, Wael F. "Development of Closed-Form Equations for Estimating the Elastic Local Buckling Capacity of Pultruded FRP Structural Shapes." Journal of Composites for Construction 21, no. 4 (2017): 04017015. http://dx.doi.org/10.1061/(asce)cc.1943-5614.0000798.

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24

Jeong, Sang Kyoon, Soon Jong Yoon, and Won Sup Jang. "Design of Transversely Isotropic Tapered Plate Element in FRP Flexural Members." Key Engineering Materials 297-300 (November 2005): 2758–66. http://dx.doi.org/10.4028/www.scientific.net/kem.297-300.2758.

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The structural shapes or plates with varying thickness are often adopted in aerospace industries such as a skin structure of an airplane and civil engineering fields where the load effects are varied along the longitudinal axis of the member. Specially, the structural steel tapered plate, so called LP (longitudinally profiled) plate, has been used in many countries as a part of main member of bridges, buildings, etc. This paper presents the result of an analytical study pertaining to the local buckling behavior of FRP (Fiber Reinforced Plastic) flexural member. The flexural member is consisted

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25

Wang, Chuan, Li Li Sui, and Jin Ping Ou. "Experimental Study on the Corrosion Resistance of GFRPP Rebar in Alkali, Acid and Salt Solutions." Advanced Materials Research 146-147 (October 2010): 1356–60. http://dx.doi.org/10.4028/www.scientific.net/amr.146-147.1356.

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More and more researchers took interests in FRP materials in civil engineering for their light weight, high strength and excellent durability performance. But common FRP rebars or plates used for reinforcing or strengthening in civil engineering are mostly made by fiber reinforced thermosetting polymer (FRSP) materials. While FRSP can not be reshaped so that many of the special shapes as bending rebar or hoop rebar cannot be easily obtained and handled at site. So, here we developed and fabricated Glass Fiber Reinforced Polypropylene (GFRPP) according to Fiber Reinforced Thermoplastic Polymer

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26

Sasikumar, M., and V. Sundareswaran. "Influence of Projectile Nose Shape on Ballistic Limit and Damage to Glass/Vinyl Ester Composite Plates." Advanced Composites Letters 20, no. 5 (2011): 096369351102000. http://dx.doi.org/10.1177/096369351102000502.

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In the recent past, the substantial structural strength, light weight and stiffness properties of polymer based composite materials find its application in aircraft and automotive structures at prodigious rate. Fibre glass Reinforced Plastic (FRP) composites are partially elastic and brittle. The present study evaluates the ballistic limit, energy absorbed and the damage area caused by different projectile nose shapes on the composite plates made of glass fibre and vinyl ester resin with the orientation of (0/90)s. The number of plies in the plates is varied to 4, 6 and 8 and thus lead to diff

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27

Solarov, Radivoj, and Milan Glisic. "Glulam beams reinforced with FRP strips and their application in architecture." Spatium, no. 32 (2014): 1–6. http://dx.doi.org/10.2298/spat1432001s.

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This paper emphasizes the advantage of using carbon polymers while producing and strengthening glulam beams. Due to advanced research carried out in this field, the first application of carbon polymers based products was implemented in Western countries. Structural elements containing carbon polymers, or being reinforced by them, show higher resistance and durability properties, as well as the ability to be produced in various shapes. These features can find best application in architecture so the architects? imagination in design could be realized. Many attractive buildings were constructed o

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Vocke, Richard, Johannes Stempin, Patrick Schiebel, Axel Herrmann, and Andreas Fischer. "Model-Based Quality Control System for Error Reduction in the Thermoforming Process." Key Engineering Materials 809 (June 2019): 598–603. http://dx.doi.org/10.4028/www.scientific.net/kem.809.598.

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Model-based quality control has the potential to reduce the reject rate in the production of fiber-reinforced plastics (FRP) components. After all the cross-market establishment of FRP, undesirable quality deviations often occur with new materials or component shapes. The quality control uses the component quality (e.g. component angle, crystallinity, fiber orientation, pore content) as the control variable. As a key component of the control, a process model is developed to link the process parameters (press pressure, press duration and tool temperature) with the quality parameters. Knowledge

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29

Niu, Jiangang, Wenming Xu, Jingjun Li, and Jian Liang. "Influence of Cross-Sectional Shape on the Mechanical Properties of Concrete Canvas and CFRP-Reinforced Columns." Advances in Materials Science and Engineering 2021 (May 11, 2021): 1–14. http://dx.doi.org/10.1155/2021/5541587.

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Fiber-reinforced polymer (FRP) wrapping has become an attractive strengthening technique for concrete columns. However, the ingress of corrosion into the concrete through the gap of CFRP fiber greatly reduces the durability of concrete and the bearing capacity of specimens. Concrete canvas, a kind of corrosion-resistant and refractory material, is a promising method to enhance durability and carrying capacity. In this study, the concrete canvas (CC) and carbon fiber-reinforced polymer (CFRP) were used to jointly reinforce columns with square cross section, octagonal cross section, circular cro

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30

Hosokawa, Kenji, Minehiro Murayama, and Toshiyuki Sakata. "Free Vibration Analysis of Angle-ply Laminated Shallow Cylindrical Shell with Clamped Edges." Journal of Vibration and Acoustics 123, no. 2 (2000): 188–97. http://dx.doi.org/10.1115/1.1349888.

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In a previous paper, the authors proposed a numerical approach for analyzing the free vibrations of a laminated FRP (fiber reinforced plastic) composite plate. In the present paper, this approach is modified for application to a symmetrically laminated shallow cylindrical shell having a rectangular planform. First, the natural frequencies of the shell are calculated for discussion of the convergence and accuracy of the solution. Next, the effects of the curvature ratio and stacking sequence on the natural frequencies and mode shapes of the shell are studied. Furthermore, to justify the numeric

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31

Mottram, J. T., and G. J. Turvey. "Physical test data for the appraisal of design procedures for bolted joints in pultruded FRP structural shapes and systems." Progress in Structural Engineering and Materials 5, no. 4 (2003): 195–222. http://dx.doi.org/10.1002/pse.154.

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32

Tompunu, Regina E., Kawilarang W. A. Masengi, and Heffry Dien. "Study on boat resistance of several Fiberglass Reinforced Plastic (FRP) boat shapes modelled in PT. Cipta Bahari Nusantara, Tanawangko, North Sulawesi." AQUATIC SCIENCE & MANAGEMENT 3, no. 1 (2015): 8. http://dx.doi.org/10.35800/jasm.3.1.2015.12432.

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Title (Bahasa Indonesia): Studi tentang tahanan kapal model pada beberapa bentuk kapal ikan FRP [Fibreglass Reinforced Plastic] dari galangan kapal di PT. Cipta Bahari Nusantara Tanawangko Ocean conditions, such as waves or strong currents, could influence the boat motion, speed and stability, and thus, boat construction needs some requirements in relation to boat design, velocity, stability, resistance, main measurements, space and position of engine. The purpose of this study was to measure the effect of total boat resistance of three fishing boat models and to compare the total resistance v

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33

Kollár, László P. "Discussion of “Local Buckling of Composite FRP Shapes by Discrete Plate Analysis” by Pizhong Qiao, Julio F. Davalos, and Jialai Wang." Journal of Structural Engineering 128, no. 8 (2002): 1091–93. http://dx.doi.org/10.1061/(asce)0733-9445(2002)128:8(1091).

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34

Qiao, Pizhong, Julio F. Davalos, and Jialai Wang. "Closure to “Local Buckling of Composite FRP Shapes by Discrete Plate Analysis” by Pizhong Qiao, Julio F. Davalos, and Jialai Wang." Journal of Structural Engineering 128, no. 8 (2002): 1093. http://dx.doi.org/10.1061/(asce)0733-9445(2002)128:8(1093).

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35

Hodul, Jakub, Lenka Mészárosová, and Rostislav Drochytka. "Recovery of Industrial Wastes as Fillers in the Epoxy Thermosets for Building Application." Materials 14, no. 13 (2021): 3490. http://dx.doi.org/10.3390/ma14133490.

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Epoxy resins are currently used in many areas of construction, such as resistant coatings, anchors, fibre-reinforced polymer (FRP) composites, grouts, etc. This paper deals mainly with epoxy composites that can be applied during the rehabilitation of concrete constructions. The influence of a filler type on epoxy thermoset composites was monitored, whilst three different types of epoxy resin were used in order to achieve a better representation and confirmation of the results. During the testing of fillers, these were mainly secondary raw materials, including pre-treated hazardous waste (neutr

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36

Zhang, Di, Jun Yang, and Li Yuan Chi. "The Bond-Slip Relationship at FRP-to-Brick Interfaces under Dynamic Loading." Materials 14, no. 3 (2021): 545. http://dx.doi.org/10.3390/ma14030545.

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Interface debonding between fiber reinforced polymers (FPR) and substrates is the principal failure mode for FRP-reinforced structure. To understand the bond–slip relationship at FRP-to-brick interfaces under dynamic loading, the influences of the dynamic enhancement of material performance on the bond–slip curve were studied. Single-lap shear tests under two different loading rates were performed, and the slip distribution curves at different loading stages were fitted to derive the bond–slip relationship. Then a numerical model considering the strain rate effects on materials was built and v

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37

YAMADA, Seishi, Hiro-Yuki NAKAZAWA, and Iwao KOMIYA. "FAILURE BEHAVIOR OF THE JOINT BETWEEN FIBER REINFORCED POLYMER SHAPES AND ROOF MEMBRANES AND ITS HEALTH MONITORING USING OPTICAL FIBER SENSORS." Journal of Structural and Construction Engineering (Transactions of AIJ) 68, no. 564 (2003): 71–77. http://dx.doi.org/10.3130/aijs.68.71_1.

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38

Jiang, Shi Yong, Bing Hong Li, Qian Hua Shi, and Xian Qi Hu. "Behavior of Continuous FRP Rectangular Spirals as Shear Reinforcement for Concrete Beams." Advanced Materials Research 418-420 (December 2011): 307–12. http://dx.doi.org/10.4028/www.scientific.net/amr.418-420.307.

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The replacement of steel stirrups with FRP stirrups in concrete structures can significantly improve the durability under severe environmental conditions, increase the service life of the structure. In some cases where the application of traditional concrete structures is restricted, such as structures that require the environment without magnetic and electric interferences, the best way is to use nonmetallic materials. Considering the unique properties compared with traditional reinforcements, FRP reinforcements is very suitable in such cases. This paper discussed the behavior of FRP stirrups

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39

Jang, Daekyu, and Junghwan Chang. "Design and Analysis of Surface-Mounted PM Vernier Machines Considering Harmonic Characteristics of Winding MMF." Energies 12, no. 5 (2019): 897. http://dx.doi.org/10.3390/en12050897.

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This paper proposes a design method for the flux modulation poles (FMPs) formed on the stator of surface-mounted permanent magnet vernier machines (SPMVM) considering the winding configurations. In three types of the SPMVM with the different winding configurations, the FMP shapes to maximize the output torque are optimized by employing the analytical equations for the magneto-motive force (MMF) due to the windings, permeance, and flux density in the air-gap. Then, the validity of the optimal shapes for the FMPs is verified by the finite element analysis. It is found that the optimal FMP shapes

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40

Panizza, Matteo, Paolo Girardello, Enrico Garbin, et al. "On-Site Pull-Out Tests of Steel Anchor Spikes Applied to Brickwork Masonry." Key Engineering Materials 624 (September 2014): 266–74. http://dx.doi.org/10.4028/www.scientific.net/kem.624.266.

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Externally Bonded (EB) composite materials are becoming a widespread solution for strengthening interventions on masonry buildings, even Cultural Heritage structures, due to several positive aspects mainly related to their high strength-to-weight ratio. In recent years, beside common epoxy-based Fibre-Reinforced Polymers (FRP), steel-based composites have been proposed: they are composed by unidirectional high-strength steel cords that can be coupled to either organic (Steel Reinforced Polymers, SRP) or inorganic (Steel Reinforced Grouts, SRG) matrices, in relation to their optimized spacing.

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41

Wei, Chaozhen, and Brian J. Spencer. "A Fokker–Planck reaction model for the epitaxial growth and shape transition of quantum dots." Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 473, no. 2206 (2017): 20170308. http://dx.doi.org/10.1098/rspa.2017.0308.

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We construct a Fokker–Planck reaction (FPR) model to investigate the dynamics of the coupled epitaxial growth and shape transition process of an array of quantum dots (QDs). The FPR model is based on a coupled system of Fokker–Planck equations wherein the distribution of each island type is governed by its own Fokker–Planck equation for growth, with reaction terms describing the shape transitions between islands of different types including asymmetric shapes. The reaction terms for the shape transitions depend on the island size and are determined from explicit calculations of the lowest barri

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42

Liang, Jiong Feng, Ze Ping Yang, and Lan Lan Yan. "Calculation of Flexural Capacity of Steel Reinforced Concrete Beams Strengthened with FRP." Advanced Materials Research 79-82 (August 2009): 1141–44. http://dx.doi.org/10.4028/www.scientific.net/amr.79-82.1141.

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Based on earlier theoretical works on RC beams ,the mechanical properties of steel reinforced concrete beams strengthened with FRP(fiber reinforce polymer) are further investigated theoretically including theirs failure mechanism and loadability. According to the design method of reinforced concrete beam strengthened with FRP, steel reinforced concrete beam strengthened with FRP mainly can have three kinds of destruction patterns: the first case is the tensile steel yield, the tensile shaped steel yield, the FRP are put off, the compressive zone’s concrete has not crushed; the second case is t

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Imjai, Thanongsak, Reyes Garcia, Maurizio Guadagnini, and Kypros Pilakoutas. "Strength Degradation in Curved Fiber-reinforced Polymer (FRP) Bars Used as Concrete Reinforcement." Polymers 12, no. 8 (2020): 1653. http://dx.doi.org/10.3390/polym12081653.

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Steel reinforcements in concrete tend to corrode and this process can lead to structural damage. Fiber-reinforced polymer (FRP) reinforcements represent a viable alternative for structures exposed to aggressive environments and have many possible applications where superior corrosion resistance properties are required. The use of FRP rebars as internal reinforcements for concrete, however, is limited to specific structural elements and does not yet extend to the whole structure. The reason for this relates to the limited availability of curved or shaped reinforcing FRP elements on the market,

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Chen, Xiao Ying, Jing Zhuo, and Tang Ning Li. "Experimental Research and Principle on Strengthened T-Beam with External Pre-Stressed Variable Section CFRP Sheets Based on Moment." Advanced Materials Research 1030-1032 (September 2014): 774–80. http://dx.doi.org/10.4028/www.scientific.net/amr.1030-1032.774.

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An innovative external pre-stressed strengthening method, in which FRP (fiber reinforced polymer) sheet is placed outside of the concrete section and anchored in multiple-point, is based on moment of beam to change the area of section of FRP sheet along the length of beam. This strengthening method is that two ends of FRP sheet are first anchored by tightening WSGA (Wave-shaped-gear-anchor), then the FRP sheet is tensioned by tightening WSGG (Wave-shaped-gear-grip) on the middle of FRP sheet and accordingly pre-stressing force is built in FRP sheet. Two same 7m long reinforced concrete T-beams

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Nakagaki, Yoko. "Fertility, female labor participation and income in East Asia." International Journal of Development Issues 17, no. 1 (2018): 69–86. http://dx.doi.org/10.1108/ijdi-06-2017-0106.

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PurposeThis study aims to apply two recently discovered relationships that describe fertility recovery in developed countries to East Asia: the U-shaped relationship between fertility and FLP (female labor participation) and the inverse-J-shaped relationship between fertility and income.Design/methodology/approachIt uses a panel data set of 176 countries including 13 East Asian countries from 1990 to 2014. Pooled ordinary least squares, fixed-effects and random-effects models are tested.FindingsThe main findings are the following points concerning East Asia: The U-shape and the inverse-J-shape

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Golias, Emmanouil, Adamantis G. Zapris, Violetta K. Kytinou, et al. "Application of X-Shaped CFRP Ropes for Structural Upgrading of Reinforced Concrete Beam–Column Joints under Cyclic Loading–Experimental Study." Fibers 9, no. 7 (2021): 42. http://dx.doi.org/10.3390/fib9070042.

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The effectiveness of externally applied fiber-reinforced polymer (FRP) ropes made of carbon fibers in X-shape formation and in both sides of the joint area of reinforced concrete (RC) beam–column connections is experimentally investigated. Six full-scale exterior RC beam–column joint specimens are tested under reverse cyclic deformation. Three of them have been strengthened using carbon FRP (CFRP) ropes that have been placed diagonally in the joint as additional, near surface-mounted reinforcements against shear. Full hysteretic curves, maximum applied load capacity, damage modes, stiffness an

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Chalioris, Constantin E., Adamantis G. Zapris, and Chris G. Karayannis. "U-Jacketing Applications of Fiber-Reinforced Polymers in Reinforced Concrete T-Beams against Shear—Tests and Design." Fibers 8, no. 2 (2020): 13. http://dx.doi.org/10.3390/fib8020013.

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The application of externally bonded fiber-reinforced polymer (EB-FRP) as shear transverse reinforcement applied in vulnerable reinforced concrete (RC) beams has been proved to be a promising strengthening technique. However, past studies revealed that the effectiveness of this method depends on how well the reinforcement is bonded to the concrete surface. Thus, although the application of EB-FRP wrapping around the perimeter of rectangular cross-sections leads to outstanding results, U-jacketing in shear-critical T-beams seems to undergo premature debonding failures resulting in significant r

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Joo, Hyung-Joong, Seung-Sik Lee, Jong-Seok Yi, and Soon-Jong Yoon. "Design of Pultruded I-shape FRP Compression Member." Journal of The Korean Society for Composite Materials 25, no. 2 (2012): 46–53. http://dx.doi.org/10.7234/kscm.2012.25.2.046.

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Huang, Shijia. "Factors Affecting the Structural Behavior of FRP Wrapped Concrete Columns and Applications in Design." E3S Web of Conferences 198 (2020): 01023. http://dx.doi.org/10.1051/e3sconf/202019801023.

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In this paper, the FRP wrapped concrete column is investigated. . According to the research results of Shan et al. (2020) [2], Li et al. (2006) [3], and Deb et al. (2010) [4], this paper analyzes the variables that need to be controlled in the design of columns from these three perspectives: the shape of the cross-section, fiber orientation and bonding between the concrete column and FRP confinement. Impact tests and compressive tests are performed on different specimen. The setting of different samples follows the principle of controlling variables. The results indicate that FRP-wrapped colum

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Soudki, Khaled A., Ahmad A. Rteil, Rania Al-Hammoud, and Timothy H. Topper. "Fatigue strength of fibre-reinforced-polymer-repaired beams subjected to mild corrosion." Canadian Journal of Civil Engineering 34, no. 3 (2007): 414–21. http://dx.doi.org/10.1139/l06-153.

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Infrastructure corrosion is an expensive problem worldwide. In the case of reinforced concrete (RC) structures, corrosion reduces the steel cross sectional area and thus decreases the capacity of the corroded RC members. The expansion of the corroded steel also induces tensile stresses in the concrete causing the concrete cover to crack and spall, thus reducing the bond capacity between concrete and steel. This paper reports on a research program conducted at the University of Waterloo that studied the effect of corrosion on flexural and bond fatigue strength. The effect of the addition of fib

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