In a thermal cycling environment, thermal stresses, which are secondary stresses, repeatedly increase and decrease with temperature changes. When thermal stresses are repeated in the presence of primary stress, plastic strain may accumulate in one direction with each cycle, and permanent deformation may gradually progress. This phenomenon is called ratcheting [...]

Background: Plasma Disruption Phenomena and Electromagnetic Forces Acting on the Vacuum Vessel Within a fusion reactor (here, referring to the vacuum vessel in a magnetic confinement type tokamak fusion reactor), a high-current plasma is confined. In the case of ITER, this current reaches 17MA [...]

General inspection companies are limited in the tests and inspections they can perform depending on the testing machines they own. Fusion reactors, especially equipment within the vacuum vessel, require tests spanning multiple fields. In addition to mechanical property tests and inspections, non-destructive testing of welded parts, measurement of gas release [...]

One of the analytical methods recognized in nuclear codes such as ASME and RCC-MR is Limit analysis. This is in contrast to the conventional method, which linearizes stresses into membrane stress and bending stress (by drawing evaluation lines) for evaluation, [...]

A cooling structure using powder HIP (Powder Hot Isostatic Pressing) is applied to the divertor infrared thermography, which is one of the measurement instruments installed in the ITER vacuum vessel. [...]

A specialized book on fusion technology has been published by Elsevier. In November 2024, the specialized book "Fusion Energy Technology R&D Priorities" in the field of fusion technology was published by Elsevier [...]

We are pleased to announce the establishment of Fusion Technologies Co., Ltd. Our aim is to contribute to the continuous development of fusion-related technologies, and we offer engineering services that integrate design, quality assurance, and manufacturing management [...]

We are pleased to announce the establishment of Fusion Technologies Co., Ltd. We aim to contribute to the continuous development of fusion-related technologies through integrated design, quality assurance, and manufacturing management. We […]