The Experts below are selected from a list of 324 Experts worldwide ranked by ideXlab platform

Sean B. Leen - One of the best experts on this subject based on the ideXlab platform.

  • Damage and permeability in tape-laid thermoplastic composite Cryogenic Tanks
    Composites Part A: Applied Science and Manufacturing, 2015
    Co-Authors: D. M. Grogan, Conchúr M. Ó Brádaigh, J. Patrick Mcgarry, Sean B. Leen
    Abstract:

    This work presents a combined experimental and numerical approach to the design and analysis of tape-laid thermoplastic composite Cryogenic Tanks. A detailed material and defect characterisation of automated tape-laid CF/PEEK is undertaken using optical micrography and 3D X-ray CT (computed tomography) as well as Cryogenic testing to investigate damage formation. Resulting material data is used as input for a novel XFEM (extended finite element method)-cohesive zone methodology which is used to predict intra- and inter-ply damage in an internally pressurised Cryogenic Tank. An optimised Tank lay-up is presented and analysed using the numerical method to ensure resistance to microcrack formation and fuel leakage through the Tank walls under operating loads.

  • Damage and permeability in tape-laid thermoplastic composite Cryogenic Tanks Part A Applied science and manufacturing
    Composites, 2015
    Co-Authors: D. M. Grogan, Conchúr M. Ó Brádaigh, J. Patrick Mcgarry, Sean B. Leen
    Abstract:

    This work presents a combined experimental and numerical approach to the design and analysis of tape-laid thermoplastic composite Cryogenic Tanks. A detailed material and defect characterisation of automated tape-laid CF/PEEK is undertaken using optical micrography and 3D X-ray CT (computed tomography) as well as Cryogenic testing to investigate damage formation. Resulting material data is used as input for a novel XFEM (extended finite element method)–cohesive zone methodology which is used to predict intra- and inter-ply damage in an internally pressurised Cryogenic Tank. An optimised Tank lay-up is presented and analysed using the numerical method to ensure resistance to microcrack formation and fuel leakage through the Tank walls under operating loads.

D. M. Grogan - One of the best experts on this subject based on the ideXlab platform.

  • Damage and permeability in tape-laid thermoplastic composite Cryogenic Tanks
    Composites Part A: Applied Science and Manufacturing, 2015
    Co-Authors: D. M. Grogan, Conchúr M. Ó Brádaigh, J. Patrick Mcgarry, Sean B. Leen
    Abstract:

    This work presents a combined experimental and numerical approach to the design and analysis of tape-laid thermoplastic composite Cryogenic Tanks. A detailed material and defect characterisation of automated tape-laid CF/PEEK is undertaken using optical micrography and 3D X-ray CT (computed tomography) as well as Cryogenic testing to investigate damage formation. Resulting material data is used as input for a novel XFEM (extended finite element method)-cohesive zone methodology which is used to predict intra- and inter-ply damage in an internally pressurised Cryogenic Tank. An optimised Tank lay-up is presented and analysed using the numerical method to ensure resistance to microcrack formation and fuel leakage through the Tank walls under operating loads.

  • Damage and permeability in tape-laid thermoplastic composite Cryogenic Tanks Part A Applied science and manufacturing
    Composites, 2015
    Co-Authors: D. M. Grogan, Conchúr M. Ó Brádaigh, J. Patrick Mcgarry, Sean B. Leen
    Abstract:

    This work presents a combined experimental and numerical approach to the design and analysis of tape-laid thermoplastic composite Cryogenic Tanks. A detailed material and defect characterisation of automated tape-laid CF/PEEK is undertaken using optical micrography and 3D X-ray CT (computed tomography) as well as Cryogenic testing to investigate damage formation. Resulting material data is used as input for a novel XFEM (extended finite element method)–cohesive zone methodology which is used to predict intra- and inter-ply damage in an internally pressurised Cryogenic Tank. An optimised Tank lay-up is presented and analysed using the numerical method to ensure resistance to microcrack formation and fuel leakage through the Tank walls under operating loads.

Rongshun Wang - One of the best experts on this subject based on the ideXlab platform.

  • optimization and performance of highly efficient hydrogen getter applied in high vacuum multilayer insulation Cryogenic Tank
    Vacuum, 2018
    Co-Authors: Jian Wang, Ying Zhan, Wen Wang, Rongshun Wang
    Abstract:

    Abstract H2 released from materials in the vacuum chamber of high-vacuum-multilayer-insulation Tank (HVMIT) and is adsorbed by the expensive getter PdO. However, in addition to its disadvantageous high cost, PdO produces sparks and burns easily during H2 adsorption process, thereby compromising the safety of storage Tanks. Therefore, we designed an experimental platform for studying composite H2 getters based on transition metal oxides. The getter consists of copper oxide (CuO), active carbon (C), and copper (Cu). The obtained optimal C and Cu mass contents are 68.086% and 21.276%, respectively. The addition of C facilitates the H2 absorption by CuO. The adsorption rate increases by one order of magnitude with the addition of Cu. The adsorption isotherm of CuO & C & Cu is classified as type I as accurately described by the Langmuir model. At the equilibrium pressure not higher than 5.0 × 10−2 Pa, the H2 adsorption capacity is 397.00 mL(stp)/g, and Langmuir saturated adsorption amount was 415.913 mL(stp)/g at room temperature. The new getter offers the advantages of low cost, high efficiency, and ease of production. This getter can directly replace PdO as H2 getter and be used in vacuum storage Tanks.

  • Experimental investigation of the influence of different leaking gases on the heat transfer in a HVMLI Cryogenic Tank after SCLIV
    Cryogenics, 2012
    Co-Authors: Ming Zhu, Rongshun Wang
    Abstract:

    Abstract This paper presented an experimental investigation of the influence of different leaking gases on the heat transfer process in a high-vacuum-multilayer-insulation (HVMLI) Cryogenic Tank after sudden catastrophic loss of insulation vacuum (SCLIV). The experiments were conducted with the breakdown of the insulation vacuum with nitrogen, air, helium, oxygen, argon, carbon dioxide and the gas mixture of argon and carbon dioxide. The maximum value of the venting rate and heat flux could be ordered as following: CO 2  > O 2  > Ar > the gas mixture > He > Air > N 2 , while the average value of the venting rate and heat flux could be ordered as following: O 2  > Ar > He > the gas mixture > CO 2  > Air > N 2 . The temperature distribution indicated that phase change heat transfer happened in the insulation jacket after the five different gases including air, argon, the gas mixture of argon and carbon dioxide, oxygen and carbon dioxide were introduced into the insulation jacket.

  • Experimental study on the storage performance of high-vacuum-multilayer-insulation Tank after sudden, catastrophic loss of insulating vacuum
    Heat and Mass Transfer, 2011
    Co-Authors: Guogang Xie, Rongshun Wang
    Abstract:

    High-vacuum-multilayer-insulation (HVMLI) Cryogenic Tank is one kind of dangerous pressure vessels. One of the worst accidents that may occur in a high-vacuum-multilayer-insulation (HVMLI) Cryogenic Tank is a sudden, catastrophic loss of insulating vacuum (SCLIV). The influence of SCLIV on storage performance for a HVMLI Cryogenic Tank is experimentally studied in this paper. A test rig was built up and experiments were conducted using LN2 as the test medium. The Cryogenic Tank was tested in the conditions of various combinations with different initial liquid level and number of insulation layers. Some important conclusions for storage performance with a vacuum-lost HVMLI Cryogenic Tank have been obtained. The experimental results show that the numbers of insulation layers and the initial liquid level have obvious effect on the storage performance after SCLIV for Cryogenic Tanks.

  • Experimental Investigation of the Influence of the Gas Type on the Heat Transfer in a High-Vacuum-Multilayer-Insulation Cryogenic Tank After Sudden, Catastrophic Loss of Insulating Vacuum
    Advanced Materials Research, 2011
    Co-Authors: Ming Zhu, G.F. Xie, Rongshun Wang
    Abstract:

    One of the worst accidents that may occur in a high-vacuum-multilayer-insulation (HVMLI) Cryogenic Tank is a sudden, catastrophic loss of insulation vacuum (SCLIV). it is obvious that the different gas leaking into the insulation jacket have some influence on the heat transfer process. However, this problem has not been studied systematically so far. In this paper, a test rig was built up and experiments were conducted on a SCLIV Cryogenic Tank by using the nitrogen, helium, oxygen, carbon dioxide and air as the leaking medium, respectively. Some important phenomena and heat transfer characteristics in a vacuum-lost HVMLI Cryogenic Tank have been obtained. The effects of the insulation layer numbers and the type of gases on venting rate and heat flux into the Cryogenic liquid have been measured, analyzed and discussed. It indicates that the heat transfer performance of the HVMLI Cryogenic Tank after SCLIV is strong related to the type of gases leaking into the insulation jacket.

  • Experimental study of heat transfer in a HVMLI Cryogenic Tank after SCLIV
    Heat and Mass Transfer, 2010
    Co-Authors: Guogang Xie, Rongshun Wang
    Abstract:

    One of the worst accidents that may occur in a high-vacuum-multilayer-insulation (HVMLI) Cryogenic Tank is a sudden, catastrophic loss of insulating vacuum (SCLIV). The influence of SCLIV on the heat transfer characteristics in a HVMLI Cryogenic Tank has been researched experimentally in this paper. A test rig was built up and experiments were conducted using LN2 as the test medium. Some important phenomena and heat transfer characteristics in a vacuum-lost LN2 HVMLI Cryogenic Tank have been obtained. The effects of the insulation layer numbers and the initial liquid level on venting rate and heat flux leaking into the Cryogenic liquid as well as the temperatures of wall and liquid have been analyzed and discussed for a LN2 HVMLI Cryogenic Tank after SCLIV in this paper.

Conchúr M. Ó Brádaigh - One of the best experts on this subject based on the ideXlab platform.

  • Damage and permeability in tape-laid thermoplastic composite Cryogenic Tanks
    Composites Part A: Applied Science and Manufacturing, 2015
    Co-Authors: D. M. Grogan, Conchúr M. Ó Brádaigh, J. Patrick Mcgarry, Sean B. Leen
    Abstract:

    This work presents a combined experimental and numerical approach to the design and analysis of tape-laid thermoplastic composite Cryogenic Tanks. A detailed material and defect characterisation of automated tape-laid CF/PEEK is undertaken using optical micrography and 3D X-ray CT (computed tomography) as well as Cryogenic testing to investigate damage formation. Resulting material data is used as input for a novel XFEM (extended finite element method)-cohesive zone methodology which is used to predict intra- and inter-ply damage in an internally pressurised Cryogenic Tank. An optimised Tank lay-up is presented and analysed using the numerical method to ensure resistance to microcrack formation and fuel leakage through the Tank walls under operating loads.

  • Damage and permeability in tape-laid thermoplastic composite Cryogenic Tanks Part A Applied science and manufacturing
    Composites, 2015
    Co-Authors: D. M. Grogan, Conchúr M. Ó Brádaigh, J. Patrick Mcgarry, Sean B. Leen
    Abstract:

    This work presents a combined experimental and numerical approach to the design and analysis of tape-laid thermoplastic composite Cryogenic Tanks. A detailed material and defect characterisation of automated tape-laid CF/PEEK is undertaken using optical micrography and 3D X-ray CT (computed tomography) as well as Cryogenic testing to investigate damage formation. Resulting material data is used as input for a novel XFEM (extended finite element method)–cohesive zone methodology which is used to predict intra- and inter-ply damage in an internally pressurised Cryogenic Tank. An optimised Tank lay-up is presented and analysed using the numerical method to ensure resistance to microcrack formation and fuel leakage through the Tank walls under operating loads.

J. Patrick Mcgarry - One of the best experts on this subject based on the ideXlab platform.

  • Damage and permeability in tape-laid thermoplastic composite Cryogenic Tanks
    Composites Part A: Applied Science and Manufacturing, 2015
    Co-Authors: D. M. Grogan, Conchúr M. Ó Brádaigh, J. Patrick Mcgarry, Sean B. Leen
    Abstract:

    This work presents a combined experimental and numerical approach to the design and analysis of tape-laid thermoplastic composite Cryogenic Tanks. A detailed material and defect characterisation of automated tape-laid CF/PEEK is undertaken using optical micrography and 3D X-ray CT (computed tomography) as well as Cryogenic testing to investigate damage formation. Resulting material data is used as input for a novel XFEM (extended finite element method)-cohesive zone methodology which is used to predict intra- and inter-ply damage in an internally pressurised Cryogenic Tank. An optimised Tank lay-up is presented and analysed using the numerical method to ensure resistance to microcrack formation and fuel leakage through the Tank walls under operating loads.

  • Damage and permeability in tape-laid thermoplastic composite Cryogenic Tanks Part A Applied science and manufacturing
    Composites, 2015
    Co-Authors: D. M. Grogan, Conchúr M. Ó Brádaigh, J. Patrick Mcgarry, Sean B. Leen
    Abstract:

    This work presents a combined experimental and numerical approach to the design and analysis of tape-laid thermoplastic composite Cryogenic Tanks. A detailed material and defect characterisation of automated tape-laid CF/PEEK is undertaken using optical micrography and 3D X-ray CT (computed tomography) as well as Cryogenic testing to investigate damage formation. Resulting material data is used as input for a novel XFEM (extended finite element method)–cohesive zone methodology which is used to predict intra- and inter-ply damage in an internally pressurised Cryogenic Tank. An optimised Tank lay-up is presented and analysed using the numerical method to ensure resistance to microcrack formation and fuel leakage through the Tank walls under operating loads.