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P. 105
given in the table so that it is can be substituted in
Equation 4.13. After substitution at least three sim-
ulataneous equation can be derived.
For a known Poisson ratio and Elastic constant, the
residual stress in the material can be calculated based
on the strain obtain in neutron diffraction experiment.
The relationship between the residual stress with the
strain of lattice is given in Equation 4.14.
σ11 ε11 + νhkl B (4.14)
σ22 ε22 + 1–νhνkhlkl B
σ33 ε11 + 1–νhνkhlkl B
1–νhkl
=A
With A= Ehkl and B=(ε11 + ε22 + ε33). Equation
1+νhkl
4.14 is a basis in calculation of the residual stress in
the material.
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