Fastener investigation in JET

Fastener investigation in JET

Fastener investigation in JET 150 150 UKAEA Opendata

Fastener investigation in JET

JET is an experimental fusion reactor consisting of magnetically confined, high temperature plasma insidea large ultra-high vacuum chamber. The inside of the chamber is protected from the hot plasma withtiles made from beryllium, tungsten, carbon composites and other materials bolted to the vessel wall.The study was carried out in response to a JET fastener seizing inside the vacuum vessel.The following study looks at characterising the magnitude of the individual factors affecting the fastenerbreak away torque. This was carried out using a statistical approach, the Taguchi method: isolating thenet effect of individual factors present in a series of tests [1](Grove and Davis, 1992).Given the severe environment within the JET vessel due to the combination of heat, ultra-high vacuumand the high contact pressure in bolt threads, the contributions of localised diffusion bonding is assessedin conjunction with various combinations of bolt and insert material.

Collection:
Journals
Journal:
Fusion Engineering and Design
Publisher:
Elsevier
Published date:
02/08/2016