FIGURE 5 - uploaded by Lan Sun
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Source publication
The flow-accelerated corrosion (FAC) entrance effect results in enhanced wall thinning immediately downstream of a weld if the weld connects an upstream FAC-resistant material with a downstream less resistant material. The weld regions, especially those with local repairs, are susceptible to cracking due to the high residual stresses induced by fab...
Contexts in source publication
Context 1
... the same material prop- erties were applied to the upstream pipe, weld joint, and the downstream pipe. Table 2 presents material properties assumed for the feeder material, SA-106 Grade B. A multilinear isotropic hardening model was assumed, and the stress-strain curve is presented in Figure 5. ...
Context 2
... of the 1.5 mm step expansion due to FAC wall thinning, the local pressure increases, and the overall pressure drop from inlet to outlet is 6.9 × 10 4 Pa and this pressure drop is less than that calcu- lated in Case 1b. Correspondingly, as shown in Figure 15a, the MTC of Case 1c increases to 14.7 mm/s, greater than that of Case 1b. ...
Context 3
... Case 2c, the weld filler material has a low Cr content and similar to Case 2b, both the weld and the downstream pipe were corroded. The pressure contours near the weld region is given in Figure 14b, and the increases of MTC at the weld region is shown in Figure 15b. The overall trends of pressure contours and MTC values in Case 2c are consistent with those in Case 1c. ...
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Citations
... By determining the stress distribution from these combined effects, the load-carrying performance of these components can be effectively assessed. Sun and Ding (Sun and Ding, 2016) proposed a methodology for the fluid-structure interaction analysis of the welded pipe. In their study, the effect of FAC on the distribution of the residual stresses was investigated. ...
