Abstract
The effects of stress gradients in beryllium surface layers on traditional X-ray stress measurements are investigated by relationship analysis of d vs. (sin ψ)2 plots with stress gradient in the surface layers of beryllium. The results show that over the range of (sin ψ)2≤0.5, there are significant effects of stress gradient on the measurement results. The stress measurement error resulting from the stress gradient is decreased using a vanadium target and high ψ range.
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