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DTRA’s advancements in nuclear and radiological detection
A new, more complex nuclear age has begun. Echoing the tensions of the Cold War amid rapidly evolving nuclear and radiological threats, preparedness in the modern age is a contest of scientific innovation. The Research and Development Directorate (RD) at the Defense Threat Reduction Agency (DTRA) is charged with winning this contest.
Saurin Majumdar, Bipin K. Pai
Fusion Science and Technology | Volume 15 | Number 4 | July 1989 | Pages 1560-1570
Technical Paper | Blanket Engineering | doi.org/10.13182/FST89-A25344
Articles are hosted by Taylor and Francis Online.
Fracture and deformation problems anticipated for the first wall of a future steady-state fusion power reactor are discussed. The stress sources considered are surface heat flux, irradiation-induced creep and swelling, and coolant pressure. Simple examples, such as a beam or a plate, as well as finite element analyses of more realistic structures from recent design studies, are used to explain the problems that are anticipated. Detailed two- and three-dimensional finite element analyses of a grooved first wall are presented to show that grooving the first wall is a potential solution for high thermal stress.