Failure Criterion of Straight Pipe with Outer Local Wall Thinning under Internal Pressure
내압을 받는 외부 국부 감육 직관의 파손 기준

Soo-Young Kim, Ki-Woo Nam
2014 Journal of the Korea Society For Power System Engineering  
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
more » ... rately 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.
doi:10.9726/kspse.2014.18.1.076 fatcat:3bygvbnyivgtpd5ipyp3tvp6jm