This paper describes an investigation into the effect of preferred orientation on X-ray stress measurements in NS.5 aluminium-alloy sheet. When the sin2 ψ technique (1)∗ of X-ray stress measurement is applied to practical engineering problems it is necessary that the correct values of the elastic constants of the material be used to calculate the X-ray stress values. In this investigation, the X-ray values of Young's modulus E and Poisson's ratio v were found to vary significantly with the direction of stress measurement relative to the rolling direction of the sheet.
RutledgeA. L.X-ray stress measurement by the back reflection technique1970 Thesis presented to the University of Canterbury for the degree of M.E.
3.
ThomasD. E.‘The measurement of stresses by X-rays’, J. scient. Instrum.194118, 135.
4.
BRITISH STANDARDS INSTITUTION, B.S. 1470:1969. Wrought aluminium and aluminium alloys. Plate sheet and strip (London).
5.
WoodW. A.SmithS. L.‘A stress-strain curve for the atomic lattice of aluminium’, J. Inst. Metals194167, 315.
6.
KlugH. P.AlexanderL. E.X-ray diffraction procedures1954 (John Wiley & Sons Inc., New York).
7.
TairaS.HayashiK.WataseZ.‘X-ray investigation on the deformation of polycrystalline metals’, Proc. 12th Jap. Congr. Mater. Res.1969, 1.
8.
DonachieM. J.jun.NortonJ. T.‘X-ray studies of lattice strains under elastic loading’, Trans. Am. Soc. Metals196255, 51.
9.
FrommerL.LloydE. H.‘The measurement of residual stresses in metals by the X-ray back-reflection method, with special reference to industrial components in aluminium alloys’, J. Inst. Metals194470, 91.
10.
DonachieM. J.jun.NortonJ. T.‘Residual stresses in shot-peened aluminum bars’, Proc. Soc. Exp. Stress Analysis196219, 222. AND Expl Mech. 1962 2, 222.
