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http://dx.doi.org/10.9726/kspse.2014.18.1.076

Failure Criterion of Straight Pipe with Outer Local Wall Thinning under Internal Pressure  

Kim, Soo-Young (UR Interdisciplinary program of Mechanical Engineering, Pukyong National University)
Nam, Ki-Woo (Materials Science and Engineering, Pukyong National University)
Publication Information
Journal of Power System Engineering / v.18, no.1, 2014 , pp. 76-83 More about this Journal
Abstract
This study was carried out an experimental and finite element analysis on the fracture behavior of straight pipes with local wall thinning under internal pressure. Local wall thinning was machined on the pipes in order to simulate erosion/corrosion metal loss. The configurations of the eroded area has an eroded ratio of d/t=0.80~0.92 and an eroded length of l=25, 50 and 102 mm. Three-dimensional elastic-plastic analyses were also carried out using the finite element method, which is able to accurately simulate failure behaviors. In regards to the relation ship between pressure and eroded ratio, the criterion that can be used safely under operating pressure and design pressure were obtained from this calculation. The results of this calculation were in relatively good agreement with that of the experiment.
Keywords
Straight Pipe; Outer Wall Thinning; Failure Criterion; Internal Pressure; Finite Element Method;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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