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The X‐ray measurement of axial stress on cylindrical curved surfaces
Author(s) -
DOIG P.,
FLEWITT P. E. J.
Publication year - 1978
Publication title -
strain
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.477
H-Index - 47
eISSN - 1475-1305
pISSN - 0039-2103
DOI - 10.1111/j.1475-1305.1978.tb01840.x
Subject(s) - residual stress , diffractometer , materials science , peening , curvature , diffraction , optics , shot peening , stress (linguistics) , geometry , composite material , structural engineering , physics , mathematics , engineering , scanning electron microscope , linguistics , philosophy
A theoretical analysis, which corrects for the geometrical effect of specimen curvature on the angular position of diffracted X‐ray peaks recorded using the diffractometer method, has been derived. The analysis has been used to correct the diffraction angles measured using the diffractometer method for the X‐ray measurement of longitudinal stress on cylindrically curved surfaces. Residual stress versus depth profiles on a semicircular, machined keyway in an L.P. turbine disc and the residual stress distribution around a shot‐peened, L.P. turbine blade, ‘fir‐tree’, notch root, both before and after fatigue loading, have been measured.