Conveners
Tue-Af-Orals Session 6: Metals and Insulators
- Tripti Sekhar Datta (Inter- University Accelerator Centre. New Delhi. India)
Yoshinori Ono
(N)
08/07/2014, 16:00
M-10: Metallic and composite materials processing and properties
Invited Oral (30min)
Tensile and high-cycle fatigue properties of Alloy 718 10 mm-thickness plate and its welded joint were investigated at 293 K and 77 K in this study. The welded joint for the plate was manufactured using electron beam welding (EBW) and followed by a solution treatment and a conventional double aging. After these heat treatments, the hardness of the welded zone became about HV470 same as that of...
Robert Walsh
(Florida State University)
08/07/2014, 16:30
M-10: Metallic and composite materials processing and properties
Oral presentation (15min)
The ITER Central Solenoid (CS) coils utilize cable-in-conduit conductor (CICC) and the conduit alloy is JK2LB. The production grade conduit alloy (and it’s welds) must meet strict requirements for strength, toughness, fatigue crack resistance, and fabricability. The conduit alloy must retain good mechanical properties after additional fabrication steps such as welding, coil winding strain and...
Stefanie Agnes Elisabeth Langeslag
(CERN)
08/07/2014, 16:45
M-10: Metallic and composite materials processing and properties
Oral presentation (15min)
Cable-in-conduit conductors will be extensively implemented in the large superconducting magnet coils foreseen to confine the plasma in the ITER experiment. The design of the various magnet systems imposes the use of electrical joints to connect unit lengths of superconducting coils, by inter-pancake coupling.
The design is based on a twin-box lap type joint. By fabrication of twin...
Wilco van de Camp
(Energy, Materials and Systems, University of Twente, The Netherlands)
08/07/2014, 17:00
M-10: Metallic and composite materials processing and properties
Oral presentation (15min)
This paper reports on the cryogenic fatigue life of Al2024 / Stycast 2850ft composite sandwiches loaded under cyclic strain, as well as on the strength of their constituent materials at 77 K. These Fibre Metal Laminate (FML) specimen serve as a model for an alternative class of materials to be used in downstream LNG applications. FMLs, such as the GLARE ™, are already used in the aeronautic...
Dr
Nicolai Martovetsky
(LLNL)
08/07/2014, 17:15
M-11: Insulation and impregnation materials
Oral presentation (15min)
The Central Solenoid stack consists of 6 modules, 2.1 m tall each. In order to verify good impregnation, we performed a VPI (vacuum-pressure impregnation) test of a full cross section of the CS module, 14 conductors wide and 40 conductors tall. It was discovered that after preparation of the full cross section stack till completion of the VPI the stack shrunk in height by 20-25 mm. Our study...
Prof.
Laifeng Li
(Technical Institute of Physics and Chemistry)
08/07/2014, 17:30
M-11: Insulation and impregnation materials
Oral presentation (15min)
Thermosetting epoxy resins are commonly used as adhesives, sealants, and matrices of insulation material of superconducting magnets. In the present work, fatigue and fracture toughness of a cryogenic-grade epoxy resin were investigated at room and liquid nitrogen temperatures to establish sound data bases for practical applications. The fatigue testing of the epoxy was conducted with strain...
Mr
Thomas Funke
(TU Dresden)
08/07/2014, 17:45
M-11: Insulation and impregnation materials
Oral presentation (15min)
An improved calorimeter cryostat for MLI thermal performance measurements has been designed and put into operation at the TU Dresden. Based on a liquid helium cooled flow cryostat, it allows the setting of any cold level temperature between approx. 30 K and ambient temperature. Thermal shields and all-embracing radiation guards at both ends can be kept at nearly identical temperature. This is...
Prof.
Laifeng Li
(State Key Laboratory of Technologies in Space Cryogenic Propellants, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences)
08/07/2014, 18:00
Oral presentation (15min)
In order to investigate the effect of the matrix variability on the interlaminar shear strength (ILSS) of the glass fiber reinforced composites at 77K, three kinds of modifiers were employed to modify the diethyl toluene diamine (DETD) cured diglycidyl ether of bisphenol F (DGEBF) epoxy resin system in this study. The woven glass fiber reinforced composites were fabricated by vacuum pressure...
