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enhancement using carbon nanotubes on flexural behavior of RC beams strengthened with externally bonded CFRPsheets

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 1,   Pages 131-143 doi: 10.1007/s11709-021-0787-8

Abstract: studied the effect of incorporation of carbon nanotubes (CNTs) in carbon fiber reinforced polymer (CFRPThe RC beams were prepared, strengthened in flexure by externally bonded CFRP or CNTs-modified CFRP sheetsdelay the initiation of the cracks and to enhance the flexural capacity of the beams strengthened with CFRPand used to study the effect of various parameters on the strengthening efficiency of CNTs-modified CFRPThe numerical results showed that utilization of CNTs in CFRP production improved the flexural capacity

Keywords： RC beams     flexural     strengthening     CFRP     CNTs     finite element    

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Seismic retrofitting of severely damaged RC connections made with recycled concrete using CFRP sheets

Yasmin MURAD, Wassel AL BODOUR, Ahmed ASHTEYAT

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 2,   Pages 554-568 doi: 10.1007/s11709-020-0613-8

Abstract: experimental and numerical program is carried out in this research to investigate the influence of CFRPsheets on the cyclic behavior of unconfined connections made with recycled concrete.Each specimen is partially loaded at the first stage and then specimens are repaired using CFRP sheets

Keywords： retrofitting     CFRP sheets     recycled concrete     pulverised fuel ash     silica fume     cyclic     beam-column connections    

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Behaviors of super-long span prestressed cable-stayed bridge with CFRP cables and UHPC girder

Fang Zhi,Ren Liang,Fan Fenghong

Strategic Study of CAE 2012, Volume 14, Issue 7,   Pages 53-59

Abstract:

To discuss the applicability of carbon fiber reinforced polymer (CFRPwith the same span using RPC(reactive powder concrete) as the girder and advanced composite material CFRPThe results show that it is feasible for using RPC as the girder and CFRP as the cable so as to form

Keywords： cable-stayed bridge     CFRP     RPC     mechanical properties    

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Axial compression behavior of CFRP-confined rectangular concrete-filled stainless steel tube stub column

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 5,   Pages 1144-1159 doi: 10.1007/s11709-021-0762-4

Abstract: The mechanical properties of CFRP-confined rectangular concrete-filled stainless steel tube (CFSST) stubgroups) were fabricated for the axial compression test to study the influences of length-to-width ratio, CFRPThe specimen failure modes, the stress development of stainless steel tube and CFRP wrap, and the load–strainwas proposed based on the twin-shear strength theory, combining the limit equilibrium state of the CFRP-confined

Keywords： CFRP     rectangular CFSST stub column     bearing capacity     limit equilibrium state     twin-shear strength theory    

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Finite element analysis and dynamic test of dynamic properties of the cable stayed bridge using CFRP

Cai Dongsheng ,Liu Ronggui,Xu Fei,Zhou Shijin

Strategic Study of CAE 2010, Volume 12, Issue 2,   Pages 16-21

Abstract: computational finite element dynamic model based on beam elements,shell elements and bar elements of above CFRPexcitation was put up to analyze the dynamic characteristics of the first cable-stayed bridge using CFRPreference for dynamic modeling and characteristic analyzing ,seismic and wind loads resistance designing of CFRPcable-stayed bridge,also it could provide reference for the further engineering application of CFRP

Keywords： CFRP cable stayed bridge     dynamic property     finite element analysis     ambient excitation     dynamic test    

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Vibration analysis of nano-structure multilayered graphene sheets using modified strain gradient theory

Amir ALLAHBAKHSHI,Masih ALLAHBAKHSHI

Frontiers of Mechanical Engineering 2015, Volume 10, Issue 2,   Pages 187-197 doi: 10.1007/s11465-015-0339-9

Abstract: effect of interlayer van der Waals (vdW) force for the vibration analysis of multilayered graphene sheets

Keywords： graphene     van der Waals (vdW) force     modi- fied strain gradient elasticity theory     size effect parameter    

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Cooling performance of grid-sheets for highly loaded ultra-supercritical steam turbines

Dieter BOHN , Robert KREWINKEL , Shuqing TIAN ,

Frontiers in Energy 2009, Volume 3, Issue 3,   Pages 313-320 doi: 10.1007/s11708-009-0036-7

Abstract: To protect the thermally highly loaded components, a sandwich material consisting of two thin face sheetsThe cooling steam is led through the woven wire mesh between the two face sheets to achieve a coolingrigidity under varying operating conditions.In the present work, the cooling performance of the grid-sheets

Keywords： steam turbines     700&     deg     C-technology     numerical inverstigation     cooling    

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Study of high-strength CFRP bolted joints with failure- monitoring cone washers

Tsukasa KATSUMATA, Yoshihiro MIZUTANI, Akira TODOROKI, Ryosuke MATSUZAKI

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 3,   Pages 272-276 doi: 10.1007/s11465-011-0231-1

Abstract:

To increase the strength of carbon-fiber-reinforced plastic (CFRP) bolted joints, a method to increase

Keywords： composite     bolted joint     failure monitoring     finite-element method    

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Truss-arch model for shear strength of seismic-damaged SRC frame columns strengthened with CFRP sheets

Sheng PENG, Chengxiang XU, Xiaoqiang LIU

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 6,   Pages 1324-1337 doi: 10.1007/s11709-019-0557-z

Abstract: Carbon fiber reinforced polymer (CFRP) materials are important reinforcing substances which are widelyTo investigate the shear strength of SRC frame columns strengthened with CFRP sheets, experimental observationson eight seismic-damaged SRC frame columns strengthened with CFRP sheets were conducted at Yangtze UniversityTo present the expression formula of the shear strength of SRC frame columns strengthened with CFRP sheetssheets.

Keywords： carbon fiber reinforced polymer material     steel reinforced concrete frame column     seismic-damaged     trussed-arch model     shear strength    

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Studies of fiber-matrix debonding

Navneet DRONAMRAJU,Johannes SOLASS,Jörg HILDEBRAND

Frontiers of Structural and Civil Engineering 2015, Volume 9, Issue 4,   Pages 448-456 doi: 10.1007/s11709-015-0316-8

Abstract: In this paper, the debonding of a single fiber-matrix system of carbon fiber reinforced composite (CFRP

Keywords： single fibre     cohesive zone model     interface debonding     carbon fiber reinforced composite (CFRP)    

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Deflection behavior of a prestressed concrete beam reinforced with carbon fibers at elevated temperatures

Mohammed FARUQI, Mohammed Sheroz KHAN

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 1,   Pages 81-91 doi: 10.1007/s11709-018-0468-4

Abstract: Therefore, this study examines the deflection behavior of the carbon fiber reinforced polymer(CFRP) prestressedtemperature dependent changes of effective modulus of FRP in predicting the deflection behavior of CFRPmodel is compared with a finite element mode (FEM) of a simply supported concrete beam prestressed with CFRP

Keywords： FRP     CFRP     concrete     elevated temperatures     deflections     prestress    

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Prevention of laryngeal webs through endoscopic keel placement for bilateral vocal cord lesions

Jian Chen, Yilai Shu, Matthew R. Naunheim, Min Chen, Lei Cheng, Haitao Wu

Frontiers of Medicine 2018, Volume 12, Issue 3,   Pages 301-306 doi: 10.1007/s11684-017-0549-0

Abstract:

Transoral microresection for treatment of vocal cord lesions involving the anterior commissure may result in anterior glottic webs. In this study, we retrospectively reviewed 54 patients who underwent microsurgery for bilateral lesions involving the anterior commissure and categorized them into two groups. The keel placement and control groups received endoscopic keel placement and mitomycin C, respectively. During the follow-up of at least 1 year, the laryngeal web formation rate significantly decreased in the keel placement group compared with that in the control group (18.6% versus 54.5%, <0.05). Furthermore, the voice handicap index-10 scores for patients without web formation decreased in both the keel placement and control groups ( <0.0001 and <0.001, respectively). A pseudomembrane covering the vocal cords was detected in 16.3% (7 of 43) cases after keel removal. A total of 100% (7 of 7) of these cases and 2.8% (1 of 36) of the other cases formed laryngeal webs ( <0.0001). Endoscopic keel placement could be an effective method for preventing anterior glottic webs after surgery for bilateral vocal cord diseases involving the anterior commissure. The pseudomembrane observed at the time of keel removal may imply a high risk of web formation.

Keywords： glottic stenosis     glottic web     laryngeal keel     silastic sheets     anterior commissure    

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Multiscale model of micro curing residual stress evolution in carbon fiber-reinforced thermoset polymer composites

Xinyu HUI, Yingjie XU, Weihong ZHANG

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 3,   Pages 475-483 doi: 10.1007/s11465-020-0590-6

Abstract: In this study, the micro curing residual stresses of carbon fiber-reinforced thermoset polymer (CFRP)Simulation results provide an important guideline for the analysis and design of CFRP composite structures

Keywords： CFRP     curing residual stress     multiscale modeling     finite element method    

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Experimental study on fire protection methods of reinforced concrete beams strengthened with carbon fiber reinforced polymer

HU Kexu, HE Guisheng, LU Fan

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 4,   Pages 399-404 doi: 10.1007/s11709-007-0054-7

Abstract: In this paper, two reinforced concrete (RC) beams strengthened with carbon fiber reinforced polymer (CFRP

Keywords： polymer     insulated     resistant     CFRP     resistance    

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Study on Strengthening Technique with Prestressed PBO Fiber Sheets

Wu Zhishen,Iwashita Kentaro,Niu Hedong

Strategic Study of CAE 2005, Volume 7, Issue 9,   Pages 18-24

Abstract: Traditional practice is to pretension fiber sheets impregnated with adhesive or FRP plate, which is time-consuming

Keywords： fiber reinforced polymers (FRP)     PBO fiber sheet     retrofit/repair     bond     prestressing     anchorage    

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Title Author Date Type Operation

enhancement using carbon nanotubes on flexural behavior of RC beams strengthened with externally bonded CFRPsheets

Journal Article

Seismic retrofitting of severely damaged RC connections made with recycled concrete using CFRP sheets

Yasmin MURAD, Wassel AL BODOUR, Ahmed ASHTEYAT

Journal Article

Behaviors of super-long span prestressed cable-stayed bridge with CFRP cables and UHPC girder

Fang Zhi,Ren Liang,Fan Fenghong

Journal Article

Axial compression behavior of CFRP-confined rectangular concrete-filled stainless steel tube stub column

Journal Article

Finite element analysis and dynamic test of dynamic properties of the cable stayed bridge using CFRP

Cai Dongsheng ,Liu Ronggui,Xu Fei,Zhou Shijin

Journal Article

Vibration analysis of nano-structure multilayered graphene sheets using modified strain gradient theory

Amir ALLAHBAKHSHI,Masih ALLAHBAKHSHI

Journal Article

Cooling performance of grid-sheets for highly loaded ultra-supercritical steam turbines

Dieter BOHN , Robert KREWINKEL , Shuqing TIAN ,

Journal Article

Study of high-strength CFRP bolted joints with failure- monitoring cone washers

Tsukasa KATSUMATA, Yoshihiro MIZUTANI, Akira TODOROKI, Ryosuke MATSUZAKI

Journal Article

Truss-arch model for shear strength of seismic-damaged SRC frame columns strengthened with CFRP sheets

Sheng PENG, Chengxiang XU, Xiaoqiang LIU

Journal Article

Studies of fiber-matrix debonding

Navneet DRONAMRAJU,Johannes SOLASS,Jörg HILDEBRAND

Journal Article

Deflection behavior of a prestressed concrete beam reinforced with carbon fibers at elevated temperatures

Mohammed FARUQI, Mohammed Sheroz KHAN

Journal Article

Prevention of laryngeal webs through endoscopic keel placement for bilateral vocal cord lesions

Jian Chen, Yilai Shu, Matthew R. Naunheim, Min Chen, Lei Cheng, Haitao Wu

Journal Article

Multiscale model of micro curing residual stress evolution in carbon fiber-reinforced thermoset polymer composites

Xinyu HUI, Yingjie XU, Weihong ZHANG

Journal Article

Experimental study on fire protection methods of reinforced concrete beams strengthened with carbon fiber reinforced polymer

HU Kexu, HE Guisheng, LU Fan

Journal Article

Study on Strengthening Technique with Prestressed PBO Fiber Sheets

Wu Zhishen,Iwashita Kentaro,Niu Hedong

Journal Article