The Experts below are selected from a list of 49011 Experts worldwide ranked by ideXlab platform
Jun Kil Park - One of the best experts on this subject based on the ideXlab platform.
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Shear Resistance of ultra-high-performance fiber-reinforced concrete
Construction and Building Materials, 2017Co-Authors: Jun Kil ParkAbstract:Abstract The Shear Resistance of ultra-high-performance fiber-reinforced concrete (UHPFRC) was investigated by using a newly proposed Shear testing system. UHPFRCs displayed strain-hardening responses, in both Shear and tensile testing, accompanied with multiple microcracks. The Shear Resistance of UHPFRCs was clearly influenced by their tensile Resistance in addition to Shear span to depth ratio (a/d). The Shear strengths of UHPFRCs generally exceed the direct tensile strengths about 1.6 times. A theoretical model predicting the Shear strength of UHPFRCs was proposed based on the tensile strength and a/d ratio.
Minhong Zhang - One of the best experts on this subject based on the ideXlab platform.
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punching Shear Resistance of steel concrete steel sandwich composite shell structure
Engineering Structures, 2016Co-Authors: Jiabao Yan, J Richard Y Liew, Minhong ZhangAbstract:Abstract A novel concept of steel–concrete–steel (SCS) sandwich conical structure has been developed for the Arctic offshore platforms. In this structure, punching Shear Resistance to localized patch loading is the main concern that considers the high pressure zones due to nonuniform distribution of the ice contact pressure. In this paper, quasi-static tests on nine large scale SCS sandwich shell structure were firstly carried out to investigate the ultimate strength behavior of the SCS sandwich shell structure under patch loading. Based on these test results, the influences of different parameters on the ultimate Resistance were discussed and analyzed. These studied parameters are composite action, steel shell thickness, spacing of connector, strength of concrete core, and curvature of the sandwich shell. Theoretical models were developed to predict the Shear Resistance of the SCS sandwich shell structure. The innovations of the developed models include developing formulae to predict the Resistances of the connector used in the sandwich shell structure, redefining the critical perimeter to analyze the punching Shear Resistance of SCS sandwich shell, and modifying the formulae in Eurocode 2 to calculate the punching Shear Resistance. The accuracy of the developed prediction models were checked and confirmed by nine reported tests and 11 tests in the literature. Finally, design recommendations on the punching Shear Resistance of the SCS sandwich shell were offered based on the discussions and validations.
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Punching Shear Resistance of steel–concrete–steel sandwich composite shell structure
Engineering Structures, 2016Co-Authors: Jiabao Yan, J.y. Richard Liew, Minhong ZhangAbstract:Abstract A novel concept of steel–concrete–steel (SCS) sandwich conical structure has been developed for the Arctic offshore platforms. In this structure, punching Shear Resistance to localized patch loading is the main concern that considers the high pressure zones due to nonuniform distribution of the ice contact pressure. In this paper, quasi-static tests on nine large scale SCS sandwich shell structure were firstly carried out to investigate the ultimate strength behavior of the SCS sandwich shell structure under patch loading. Based on these test results, the influences of different parameters on the ultimate Resistance were discussed and analyzed. These studied parameters are composite action, steel shell thickness, spacing of connector, strength of concrete core, and curvature of the sandwich shell. Theoretical models were developed to predict the Shear Resistance of the SCS sandwich shell structure. The innovations of the developed models include developing formulae to predict the Resistances of the connector used in the sandwich shell structure, redefining the critical perimeter to analyze the punching Shear Resistance of SCS sandwich shell, and modifying the formulae in Eurocode 2 to calculate the punching Shear Resistance. The accuracy of the developed prediction models were checked and confirmed by nine reported tests and 11 tests in the literature. Finally, design recommendations on the punching Shear Resistance of the SCS sandwich shell were offered based on the discussions and validations.
Jiabao Yan - One of the best experts on this subject based on the ideXlab platform.
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punching Shear Resistance of steel concrete steel sandwich composite shell structure
Engineering Structures, 2016Co-Authors: Jiabao Yan, J Richard Y Liew, Minhong ZhangAbstract:Abstract A novel concept of steel–concrete–steel (SCS) sandwich conical structure has been developed for the Arctic offshore platforms. In this structure, punching Shear Resistance to localized patch loading is the main concern that considers the high pressure zones due to nonuniform distribution of the ice contact pressure. In this paper, quasi-static tests on nine large scale SCS sandwich shell structure were firstly carried out to investigate the ultimate strength behavior of the SCS sandwich shell structure under patch loading. Based on these test results, the influences of different parameters on the ultimate Resistance were discussed and analyzed. These studied parameters are composite action, steel shell thickness, spacing of connector, strength of concrete core, and curvature of the sandwich shell. Theoretical models were developed to predict the Shear Resistance of the SCS sandwich shell structure. The innovations of the developed models include developing formulae to predict the Resistances of the connector used in the sandwich shell structure, redefining the critical perimeter to analyze the punching Shear Resistance of SCS sandwich shell, and modifying the formulae in Eurocode 2 to calculate the punching Shear Resistance. The accuracy of the developed prediction models were checked and confirmed by nine reported tests and 11 tests in the literature. Finally, design recommendations on the punching Shear Resistance of the SCS sandwich shell were offered based on the discussions and validations.
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Punching Shear Resistance of steel–concrete–steel sandwich composite shell structure
Engineering Structures, 2016Co-Authors: Jiabao Yan, J.y. Richard Liew, Minhong ZhangAbstract:Abstract A novel concept of steel–concrete–steel (SCS) sandwich conical structure has been developed for the Arctic offshore platforms. In this structure, punching Shear Resistance to localized patch loading is the main concern that considers the high pressure zones due to nonuniform distribution of the ice contact pressure. In this paper, quasi-static tests on nine large scale SCS sandwich shell structure were firstly carried out to investigate the ultimate strength behavior of the SCS sandwich shell structure under patch loading. Based on these test results, the influences of different parameters on the ultimate Resistance were discussed and analyzed. These studied parameters are composite action, steel shell thickness, spacing of connector, strength of concrete core, and curvature of the sandwich shell. Theoretical models were developed to predict the Shear Resistance of the SCS sandwich shell structure. The innovations of the developed models include developing formulae to predict the Resistances of the connector used in the sandwich shell structure, redefining the critical perimeter to analyze the punching Shear Resistance of SCS sandwich shell, and modifying the formulae in Eurocode 2 to calculate the punching Shear Resistance. The accuracy of the developed prediction models were checked and confirmed by nine reported tests and 11 tests in the literature. Finally, design recommendations on the punching Shear Resistance of the SCS sandwich shell were offered based on the discussions and validations.
Ting Tan - One of the best experts on this subject based on the ideXlab platform.
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A bioinspired study on the interlaminar Shear Resistance of helicoidal fiber structures.
Journal of the mechanical behavior of biomedical materials, 2015Co-Authors: Brian Ribbans, Ting TanAbstract:Helicoidal fibril structures are identified in many natural animals and plants. This research uses an integrated experimental and modeling approach to study the interlaminar Shear Resistance of bioinspired helicoidal fiber structures. First, helicoidal fiber-reinforced polymeric composites were created using 3D printed fiber cores and polymeric matrices, including plain, ring and helix reinforced helicoidal specimens. Then, monotonic torsional tests were performed to characterize the composite failure under interlaminar Shear stresses, and fractographic characterization was conducted to elucidate corresponding fracture mechanisms in each specimen type. Finally, finite element modeling was performed to explore the critical factors on the interlaminar Shear Resistance of helicoidal fiber structures. The results showed that fiber-matrix modulus ratios and pitch angles of helix reinforcements played important roles on the interlaminar Shear Resistance of helicoidal fiber structures.
Ezio Santagata - One of the best experts on this subject based on the ideXlab platform.
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advanced testing and characterization of interlayer Shear Resistance
Transportation Research Record, 2005Co-Authors: Francesco Canestrari, Gilda Ferrotti, Manfred N Partl, Ezio SantagataAbstract:The performance of multilayered pavement systems depends strongly on interlayer bonding. To guarantee good bonding, tack coats (also called bond coats) are usually applied at various interfaces during pavement construction or overlay. The effectiveness of the tack coat can be assessed with the use of several devices arranged by different laboratories to evaluate interlayer Shear Resistance. This paper shows how interlayer Shear Resistance may be evaluated through the Ancona Shear testing research and analysis (ASTRA) device. ASTRA results, expressed in units of maximum interlayer Shear stress (τpeak) highlight the effects of various influence parameters such as type of interface treatment, curing time, procedure of specimen preparation, temperature, and applied normal load. Moreover, this paper compares the τpeak results obtained by two different Shear test devices: the ASTRA tester designed and developed in the Polytechnic University of Marche (Italy) and the layer-parallel direct Shear tester created by...
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Advanced Testing and Characterization of Interlayer Shear Resistance
Transportation Research Record: Journal of the Transportation Research Board, 2005Co-Authors: Francesco Canestrari, Gilda Ferrotti, Manfred N Partl, Ezio SantagataAbstract:The performance of multilayered pavement systems depends strongly on interlayer bonding. To guarantee good bonding, tack coats (also called bond coats) are usually applied at various interfaces during pavement construction or overlay. The effectiveness of the tack coat can be assessed with the use of several devices arranged by different laboratories to evaluate interlayer Shear Resistance. This paper shows how interlayer Shear Resistance may be evaluated through the Ancona Shear testing research and analysis (ASTRA) device. ASTRA results, expressed in units of maximum interlayer Shear stress (τpeak), highlight the effects of various influence parameters such as type of interface treatment, curing time, procedure of specimen preparation, temperature, and applied normal load. Moreover, this paper compares the τpeak results obtained by two different Shear test devices: the ASTRA tester designed and developed in the Polytechnic University of Marche (Italy) and the layer-parallel direct Shear tester created by the Swiss Federal Laboratories for Materials Testing and Research. The two test methods provide different but comparable results showing the same ranking of Shear Resistance for different interface treatments.
