The Experts below are selected from a list of 237 Experts worldwide ranked by ideXlab platform
Lucie Vandewalle - One of the best experts on this subject based on the ideXlab platform.
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Round-robin analysis of the RILEM TC 162-TDF beam-bending Test: Part 1 - Test method evaluation
Materials and Structures, 2003Co-Authors: B. I. G. Barr, M. K. Lee, E. J. De Place Hansen, D. Dupont, E. Erdem, S. Schaerlaekens, B. Schnütgen, Henrik Stang, Lucie VandewalleAbstract:A round robin Test Programme was carried out on the beam-bending Test recommended by the RILEM TC 162-TDF [1]. Plain concrete and steel fibre reinforced concrete (SFRC) beams were included in the Test Programme. The material variables for the SFRC beams consisted of two concrete strengths, three fibre dosages and three types of fibres. A comprehensive statistical analysis was carried out to determine the applicability and robustness of the Test method. It was found that although inter-lab variations do occur, this was relatively small compared to the inherent material variation. It is also possible that the high variations observed could be due to the relatively small cross sections used for the Test beams. Additionally, an investigation was carried out to evaluate the objectiveness of the calculation procedure proposed by RILEM TC 162-TDF to obtain the necessary design parameters. It was found that the prescribed calculation procedure was satisfactory, as the variation between the design parameters calculated at different laboratories was generally within the range of ±5%. An alternative method of obtaining the design parameters, by considering residual strengths, is suggested as it simplifies the calculation procedure and the Test method. In general, the beam Test was found to be a good robust Test and relatively easy to carry out.
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Round-robin analysis of the RILEM TC 162-TDF beam-bending Test: Part 2—Approximation of δ from the CMOD response
Materials and Structures, 2003Co-Authors: B. I. G. Barr, E. J. De Place Hansen, D. Dupont, E. Erdem, S. Schaerlaekens, B. Schnütgen, Henrik Stang, M. M. Lee, Lucie VandewalleAbstract:A round robin Test Programme was carried out using the beam-bending Test recommended by RILEM TC 162-TDF [1]. The Test Programme included both plain and steel fibre reinforced concrete (SFRC) beams. A detailed analysis was carried out to investigate the influence of different Test configurations on measurements of the crack mouth opening displacement (CMOD). Linear elastic fracture mechanics (LEFM) and non-linear fracture mechanics (NLFM) methods were utilised to investigate the problem analytically. From the analytical studies carried out, it is proposed that the CMOD should not be measured at a distance more than 5mm from the bottom fibre of the beam. A larger distance than 5mm will cause the deviation between the measured CMOD and the true CMOD to reach an unacceptable level. A simple rigid body model has been proposed to relate the CMOD to the mid-span deflection. The NLFM analysis and experimental results were compared for both the plain and SFRC beam results and it was found that results based on the basis of CMOD can be compared to those based on deflections, for practical purposes, using the simple rigid body model. The experimental results strongly suggest that the rigid body model could be effectively applied for all the types of materials Tested in the round robin Test Programme. In addition it was found that the conversion from CMOD to the equivalent mid-span deflection, δc, revealed good agreement between the load-average mid-span deflection (P-δ) curve and the load-equivalent mid-span deflection (P-δ) curve especially for the SFRC specimens. It is proposed that the load-CMOD (P-CMOD) curve be used to calculate the proposed RILEM design parameters (as opposed to the P-δ curve) via the use of a correction factor determined using the simple rigid body model.
Bruno Autrusson - One of the best experts on this subject based on the ideXlab platform.
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Initiation of Depleted Uranium Oxide and Spent Fuel Testing for the Spent Fuel Sabotage Aerosol Ratio Programme
Packaging Transport Storage and Security of Radioactive Material, 2004Co-Authors: Martin Alan Molecke, Michael Warren Gregson, Ken Bryce Sorenson, Michael C. Billone, Han-chung Tsai, Wolfgang Koch, Oliver Nolte, Gunter Guido Pretzsch, Florentin Lange, Bruno AutrussonAbstract:AbstractThe authors provide a detailed overview of an on-going, multinational Test Programme thatis developing aerosol data for some spent fuel sabotage scenarios on spent fuel transportand storage casks. Experiments are being performed to quantify the aerosolised materials plus volatilised fission products generated from actual spent fuel and surrogate materialTest rods, due to impact by a high-energy-density device. The Programme participants in the United States plus Germany, France and the United Kingdom, part of the international Working Group for Sabotage Concerns of Transport and Storage Casks (WGSTSC) have strongly supported and coordinated this research Programme. Sandia National Laboratories has the lead role for conducting this research Programme; Test Programme support is provided by both the US Department of Energy and the US Nuclear Regulatory Commission. The authors provide a summary of the overall, multiphase Test design and a description of all explosive containment and aerosol collection...
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initiation of depleted uranium oxide and spent fuel Testing for the spent fuel sabotage aerosol ratio Programme
Packaging Transport Storage and Security of Radioactive Material, 2004Co-Authors: Martin Alan Molecke, Michael Warren Gregson, Ken Bryce Sorenson, Michael C. Billone, Han-chung Tsai, Wolfgang Koch, Oliver Nolte, Gunter Guido Pretzsch, Florentin Lange, Bruno AutrussonAbstract:AbstractThe authors provide a detailed overview of an on-going, multinational Test Programme thatis developing aerosol data for some spent fuel sabotage scenarios on spent fuel transportand storage casks. Experiments are being performed to quantify the aerosolised materials plus volatilised fission products generated from actual spent fuel and surrogate materialTest rods, due to impact by a high-energy-density device. The Programme participants in the United States plus Germany, France and the United Kingdom, part of the international Working Group for Sabotage Concerns of Transport and Storage Casks (WGSTSC) have strongly supported and coordinated this research Programme. Sandia National Laboratories has the lead role for conducting this research Programme; Test Programme support is provided by both the US Department of Energy and the US Nuclear Regulatory Commission. The authors provide a summary of the overall, multiphase Test design and a description of all explosive containment and aerosol collection...
B. I. G. Barr - One of the best experts on this subject based on the ideXlab platform.
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Round-robin analysis of the RILEM TC 162-TDF beam-bending Test: Part 1 - Test method evaluation
Materials and Structures, 2003Co-Authors: B. I. G. Barr, M. K. Lee, E. J. De Place Hansen, D. Dupont, E. Erdem, S. Schaerlaekens, B. Schnütgen, Henrik Stang, Lucie VandewalleAbstract:A round robin Test Programme was carried out on the beam-bending Test recommended by the RILEM TC 162-TDF [1]. Plain concrete and steel fibre reinforced concrete (SFRC) beams were included in the Test Programme. The material variables for the SFRC beams consisted of two concrete strengths, three fibre dosages and three types of fibres. A comprehensive statistical analysis was carried out to determine the applicability and robustness of the Test method. It was found that although inter-lab variations do occur, this was relatively small compared to the inherent material variation. It is also possible that the high variations observed could be due to the relatively small cross sections used for the Test beams. Additionally, an investigation was carried out to evaluate the objectiveness of the calculation procedure proposed by RILEM TC 162-TDF to obtain the necessary design parameters. It was found that the prescribed calculation procedure was satisfactory, as the variation between the design parameters calculated at different laboratories was generally within the range of ±5%. An alternative method of obtaining the design parameters, by considering residual strengths, is suggested as it simplifies the calculation procedure and the Test method. In general, the beam Test was found to be a good robust Test and relatively easy to carry out.
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Round-robin analysis of the RILEM TC 162-TDF beam-bending Test: Part 2—Approximation of δ from the CMOD response
Materials and Structures, 2003Co-Authors: B. I. G. Barr, E. J. De Place Hansen, D. Dupont, E. Erdem, S. Schaerlaekens, B. Schnütgen, Henrik Stang, M. M. Lee, Lucie VandewalleAbstract:A round robin Test Programme was carried out using the beam-bending Test recommended by RILEM TC 162-TDF [1]. The Test Programme included both plain and steel fibre reinforced concrete (SFRC) beams. A detailed analysis was carried out to investigate the influence of different Test configurations on measurements of the crack mouth opening displacement (CMOD). Linear elastic fracture mechanics (LEFM) and non-linear fracture mechanics (NLFM) methods were utilised to investigate the problem analytically. From the analytical studies carried out, it is proposed that the CMOD should not be measured at a distance more than 5mm from the bottom fibre of the beam. A larger distance than 5mm will cause the deviation between the measured CMOD and the true CMOD to reach an unacceptable level. A simple rigid body model has been proposed to relate the CMOD to the mid-span deflection. The NLFM analysis and experimental results were compared for both the plain and SFRC beam results and it was found that results based on the basis of CMOD can be compared to those based on deflections, for practical purposes, using the simple rigid body model. The experimental results strongly suggest that the rigid body model could be effectively applied for all the types of materials Tested in the round robin Test Programme. In addition it was found that the conversion from CMOD to the equivalent mid-span deflection, δc, revealed good agreement between the load-average mid-span deflection (P-δ) curve and the load-equivalent mid-span deflection (P-δ) curve especially for the SFRC specimens. It is proposed that the load-CMOD (P-CMOD) curve be used to calculate the proposed RILEM design parameters (as opposed to the P-δ curve) via the use of a correction factor determined using the simple rigid body model.
A. Cardella - One of the best experts on this subject based on the ideXlab platform.
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Main achievements of the EU HT Test Programme of ITER primary wall small scale mock ups
Fusion Engineering and Design, 2000Co-Authors: P. Lorenzetto, A. Cardella, Ph. Chappuis, W. Daenner, A. Erskine, M Febvre, G. Hofmann, P. Le Gallo, H. Stamm, S. TähtinenAbstract:This paper presents the main achievements of the European Home Team (EU HT) Test Programme of ITER primary wall small scale mock ups. It describes briefly the fabrication method of the mock ups, the Test conditions and the main results obtained with high heat flux and thermal fatigue Tests of Cu alloy/stainless steel and beryllium/Cu alloy/stainless steel mock ups. The results obtained so far show very good thermal fatigue performance and operation margin of the ITER primary first wall concept.
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The EU HT Test Programme of ITER Primary Wall Small Scale Mock Ups
1998Co-Authors: P. Lorenzetto, B. Beaumont, A. Cardella, P. Libeyre, Ph. Chappuis, B. De Gentile, W. DaennerAbstract:This paper summarises the main results obtained so far in the frame of the EU Home Team Test Programme of ITER primary wall small scale mock ups. It describes briefly the fabrication method of the mock ups, the Test conditions and the main results obtained with high heat flux and thermal fatigue Tests of Cu alloy/stainless steel and beryllium/Cu alloy/stainless steel mock ups. The results obtained so far show good thermal fatigue performance and operation margin of the ITER primary first wall concept.
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iter outboard baffle design and small scale mock ups Test Programme
Symposium On Fusion Technology, 1997Co-Authors: L Giancarli, A. Cardella, Ph. Chappuis, C A F Varandas, B Bielak, F Serra, G VieiderAbstract:The present paper describes the ITER outboard baffle design including the choice of armor and heat sink first wall materials. Two versions of first wall attachment are presented which differ from the applied fabrication techniques. The choice of the best fabrication techniques will be based on the results of the implemented experimental Programme which starts with fabrication and Testing of small-scale FW-mock-ups.
Ph. Chappuis - One of the best experts on this subject based on the ideXlab platform.
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Main achievements of the EU HT Test Programme of ITER primary wall small scale mock ups
Fusion Engineering and Design, 2000Co-Authors: P. Lorenzetto, A. Cardella, Ph. Chappuis, W. Daenner, A. Erskine, M Febvre, G. Hofmann, P. Le Gallo, H. Stamm, S. TähtinenAbstract:This paper presents the main achievements of the European Home Team (EU HT) Test Programme of ITER primary wall small scale mock ups. It describes briefly the fabrication method of the mock ups, the Test conditions and the main results obtained with high heat flux and thermal fatigue Tests of Cu alloy/stainless steel and beryllium/Cu alloy/stainless steel mock ups. The results obtained so far show very good thermal fatigue performance and operation margin of the ITER primary first wall concept.
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The EU HT Test Programme of ITER Primary Wall Small Scale Mock Ups
1998Co-Authors: P. Lorenzetto, B. Beaumont, A. Cardella, P. Libeyre, Ph. Chappuis, B. De Gentile, W. DaennerAbstract:This paper summarises the main results obtained so far in the frame of the EU Home Team Test Programme of ITER primary wall small scale mock ups. It describes briefly the fabrication method of the mock ups, the Test conditions and the main results obtained with high heat flux and thermal fatigue Tests of Cu alloy/stainless steel and beryllium/Cu alloy/stainless steel mock ups. The results obtained so far show good thermal fatigue performance and operation margin of the ITER primary first wall concept.
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iter outboard baffle design and small scale mock ups Test Programme
Symposium On Fusion Technology, 1997Co-Authors: L Giancarli, A. Cardella, Ph. Chappuis, C A F Varandas, B Bielak, F Serra, G VieiderAbstract:The present paper describes the ITER outboard baffle design including the choice of armor and heat sink first wall materials. Two versions of first wall attachment are presented which differ from the applied fabrication techniques. The choice of the best fabrication techniques will be based on the results of the implemented experimental Programme which starts with fabrication and Testing of small-scale FW-mock-ups.
