Qualification of the resin for the ITER TF coil insulation

Prokopec, R.; Humer, K.; Maix, R.; Fillunger, H.; Weber, H.W.; Knaster, J.; Savary, F.

doi:10.1016/j.fusengdes.2011.02.009

Cited by 10 publications

(8 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The neutron irradiation has only a small effect. The UTS of the Arisawa material is reduced by 10% after irradiation, the same as for the material consisting of un-bonded tapes [4].…”

Section: A Ultimate Tensile Strength and Stress Strain Relationsmentioning

confidence: 69%

See 1 more Smart Citation

Characterization of Bonded Glass/Polyimide Tapes for the ITER TF Coil Insulation

Prokopec

Humer

Maix

et al. 2012

IEEE Trans. Appl. Supercond.

Self Cite

View full text Add to dashboard Cite

The insulation of the ITER TF coils consists of multiple wrapped layers of glass fiber polyimide sandwich tapes. In order to simplify the fabrication process, the polyimide tape can be bonded to the glass fiber tape, mainly to avoid misalignments of the polyimide tape. However, due to the intense neutron and -radiation exposure, bonding agents have to be radiation resistant, otherwise the composite will be severely damaged, as was observed for the ITER TF model coil insulation.Two bonded glass fiber polyimide tapes (40 mm wide, 0.175 mm thick) were supplied by Arisawa, Japan, and Advanced Composites Group, United Kingdom. Test materials were fabricated based on the build-up of the ITER TF turn insulation and vacuum pressure impregnated with a 40:60 cyanate ester/epoxy blend supplied by Huntsman, Switzerland.The mechanical properties of these materials were characterized prior to and after reactor irradiation to a fast neutron fluence of , i.e. twice the ITER design fluence. Static and dynamic tensile tests were carried out at RT and 77 K. The Arisawa tape showed excellent mechanical properties.

show abstract

“…The neutron irradiation has only a small effect. The UTS of the Arisawa material is reduced by 10% after irradiation, the same as for the material consisting of un-bonded tapes [4].…”

Section: A Ultimate Tensile Strength and Stress Strain Relationsmentioning

confidence: 69%

“…The wrapped plates were impregnated with a CE/epoxy blend from Huntsman (LMB 6653/LMB 6622-4) which has been qualified for the ITER TF coil in 2010. The results of this qualification program were presented in [4].…”

Section: Methodsmentioning

confidence: 99%

Characterization of Bonded Glass/Polyimide Tapes for the ITER TF Coil Insulation

Prokopec

Humer

Maix

et al. 2012

IEEE Trans. Appl. Supercond.

Self Cite

View full text Add to dashboard Cite

show abstract

“…The reinforcement of the composite consists of R-glass fiber (0.25 x 40 mm) / Kapton HN (0.05 x 36 mm) tapes [5]. Three wrapped aluminium plates were enclosed by stainless steel plates, which were welded together to form the mould.…”

Section: Methodsmentioning

confidence: 99%

“…CE / epoxy blends with a mixing ratio of 40:60 were supplied by different companies. The first two resin systems from Huntsman, Switzerland, and Composite Technology Development (CTD), USA, have been fully qualified in 2010 [5]. A third CE blend from Industrial Summit Technology (IST), Japan, was delivered by the end of 2010 for qualification.…”

Section: Introductionmentioning

confidence: 99%

Qualification of a cyanate ester epoxy blend supplied by Japanese industry for the ITER TF coil insulation

Prokopec¹,

Humer²,

Fillunger³

et al. 2012

AIP Conference Proceedings

Self Cite

View full text Add to dashboard Cite

Radiation effect on interlaminar shear strength of the electric insulation system with cyanate ester and epoxy blended resin AIP Conference Proceedings 1435, 99 (2012) ABSTRACTDuring the last years, two cyanate ester epoxy blends supplied by European and US industry have been successfully qualified for the ITER TF coil insulation. The results of the qualification of a third CE blend supplied by Industrial Summit Technology (IST, Japan) will be presented in this paper. Sets of test samples were fabricated exactly under the same conditions as used before. The reinforcement of the composite consists of wrapped R-glass / polyimide tapes, which are vacuum pressure impregnated with the resin. The mechanical properties of this material were characterized prior to and after reactor irradiation to a fast neutron fluence of 2x10 22 m -2 (E>0.1 MeV), i.e. twice the ITER design fluence. Static and dynamic tensile as well as static short beam shear tests were carried out at 77 K. In addition, stress strain relations were recorded to determine the Young's modulus at room temperature and at 77 K. The results are compared in detail with the previously qualified materials from other suppliers.

show abstract

“…CE/epoxy blends were developed in industry and irradiated at the Institute of Atomic and Subatomic Physics (ATI) in Austria [3], [4]. As an outcome of this qualification campaign there are 3 blends of CE/epoxy blends from 3 different suppliers fully qualified as per ITER requirements: CTD-425 from Composite Technology Development Inc. (CTD) in the US, LMB 6622/LMB 6653 from Huntsman in Switzerland and Super Resin TE-401 from Industrial Summit Technology (IST) in Japan.…”

Section: B Qualification Testsmentioning

confidence: 99%

The Toroidal Field Coils for the ITER Project

Savary

Gallix

Knaster

et al. 2012

IEEE Trans. Appl. Supercond.

Self Cite

View full text Add to dashboard Cite

The ITER Magnet System contains 18 Toroidal Field Coils (TFC). These are large D-shaped coils of about 300 t, 17.5-m height and 9-m width. They consist of a Winding Pack (WP) enclosed in a rigid structural steel case, the Toroidal Field Coil Case (TFCC). The WP is a bonded structure of 7 Double Pancakes (DP), each made up of a radial plate (RP) housing the reacted cable-in-conduit superconductor (CICC), which operate at 4.5 K in supercritical helium. The conductor carries a current of 68 kA in operation to produce a nominal peak field of 11.8 T. The total stored magnetic energy in the 18 TFCs is 41 GJ. While the Japanese and European Domestic Agencies that are in charge of the procurement of the TFCs are progressing with the manufacturing design and the fabrication trials prior to launch the production of the real coils, the ITER Organization (IO) is completing the development and qualification of the most critical items, e.g. cyanate ester and resin blends for the conductor and WP insulation system, the terminal region, the helium inlet, a charged resin system for the filling of the gap between the WP and the TFCC and the general tolerancing especially at the interfaces between the neighboring systems. This paper presents the final design of the TFCs and the results of the developments carried out in the aforementioned areas in the last 2 years.

show abstract

Qualification of the resin for the ITER TF coil insulation

Cited by 10 publications

References 6 publications

Characterization of Bonded Glass/Polyimide Tapes for the ITER TF Coil Insulation

Characterization of Bonded Glass/Polyimide Tapes for the ITER TF Coil Insulation

Qualification of a cyanate ester epoxy blend supplied by Japanese industry for the ITER TF coil insulation

The Toroidal Field Coils for the ITER Project

Contact Info

Product

Resources

About