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| THE ERROR CAUSED BY THE SIDE DECLINING ANGLE OF THE COUNTER SCANNING PLANE AND ITS EFFECT TO THE X-RAY STRESS MEASUREMENT |
| Li Jiabao Institute of Metal Research; Academia Sinica |
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Cite this article:
Li Jiabao Institute of Metal Research; Academia Sinica. THE ERROR CAUSED BY THE SIDE DECLINING ANGLE OF THE COUNTER SCANNING PLANE AND ITS EFFECT TO THE X-RAY STRESS MEASUREMENT. Acta Metall Sin, 1979, 15(3): 421-432.
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Abstract The error in the X-ray stress measurement caused by the side declining angle, γ,of the counter scanning plane is shown to be: Δσ_X=-(σ_Ysin~2γ+τ_(XY)csin2ψ_i)in which D_i=∑sin~2ψ_i-nsin~2ψ/(∑sin~2ψ_i)~2-n∑sin~4ψ_i; n is the number of ψ. Such a relation isbeing supported by experimental results obtained in our laboratory. The error in stress measurements along axial direction of a cylindrical surfaceand certain problems encountered in the X-ray stress measurements of anomalous-ly shaped machine parts are discussed based on the above formula.
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Received: 18 March 1979
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[1] 金属研究所疲劳研究组,金属学报,13(1977) ,1．
[2] 史连友,待发表工作.
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[4] 日本材料学会,X線応力测定法,養贤堂,1966,p.180．
[5] 小岛公平,材料试验,11(1962) ,637．
[6] 金属研究所疲劳研究组,侧倾法X射线应力测定技术--原理、特点及应用,金属研究所资料,1978． |
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