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Proceedings Paper

Thermo-mechanical failure criteria for x-ray windows and filters and comparison with experiments
Author(s): Zhibi Wang; Tuncer M. Kuzay
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Paper Abstract

Synchrotron x-ray windows are vacuum separators and are usually made of thin beryllium metal. Filters are provided upstream of the window to filter out the soft x-rays to protect the window from overheating and failing. The filters are made of thin carbon products or sometimes beryllium, the same material as the window. Because the window is a vacuum separator, understanding its potential structural failure under thermal load is very important. Current structural failure models for the brazed windows and filters under thermal stresses are not very accurate. Existing models have been carefully examined and found to be inconsistent with the actual failure modes of windows tested. Due to the thinness of the filter/window, the most likely failure mode is thermal buckling. In fact, recent synchrotron tests conducted in Japan on window failures bear out this position. In this paper, failure criteria for filters/windows are proposed, and analyses are performed and compared with the experimental results from various sources. A consistent result is found between the analysis and reported experiments.

Paper Details

Date Published: 12 November 1993
PDF: 10 pages
Proc. SPIE 1997, High Heat Flux Engineering II, (12 November 1993); doi: 10.1117/12.163825
Show Author Affiliations
Zhibi Wang, Argonne National Lab. (United States)
Tuncer M. Kuzay, Argonne National Lab. (United States)

Published in SPIE Proceedings Vol. 1997:
High Heat Flux Engineering II
Ali M. Khounsary, Editor(s)

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