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Stress field estimation around a semi-constrained inclusion and its validation by interpreting hydride platelet orientation around a blister in a Zr-2.5Nb alloy
R.N. Singh, R. Kishore, T.K. Sinha, S. Banerjee,
Published in
Volume: 339
Issue: 1-2
Pages: 17 - 28
A methodology for estimating the stress field in the matrix surrounding a semi-constrained inclusion is proposed. The stress free misfit volume associated with the inclusion was partitioned into semi-constrained and constrained components. The objective was achieved by carrying out a series of sectioning, cutting and imposition of constrained misfit displacement on an imaginary notch of geometry identical to that of the inclusion-matrix contour. The stress field was computed using elastic finite element analysis for plane stress condition. The misfit displacement model thus developed was applied to compute the stress field around a hydride blister grown under controlled thermal boundary condition in Zr-2.5 Nb pressure tube (PT) alloy and was validated by interpreting the hydride platelet orientation in the matrix surrounding the blister. Finally, an assessment of the structural integrity of the Zr-2.5Nb PT material containing hydride blister was made in view of this analysis. © 2003 Elsevier Science B.V. All rights reserved.
About the journal
JournalMaterials Science and Engineering A