Environmental stress cracking (ESC) is one of the important causes of failure of a polymer product such as a pipe for chemicals. Both mechanical loading and diffusion of chemical from the surfa of material are dominant factors of ESC. In this study, growth ehavior of ESC was simulated by FEM analysis as a structure-diffusion interaction problem. The results show that the crack growt rate and the crack surface shape were affected by the diffusional rate and diffused concentration distribution in the materia...
英字タイトル:
FEM analysis on environmental stress cracking for plastic pipe materials

The present status of structural material development for Japanese long-life sodium cooled fast breeder reactor (LLSFR) is reported. Structural material is vital for maintaining i ts integrity of such a huge complicated plant throughout the life and is expected to play an important role to contain the risk in the plant when accidents occur in LLSFR. Most of appeared risks of the plant seem to be caused by the uncertainties of the material, scattering of material properties, uncertainty of operational condi...
英字タイトル:
The Present Status of Advanced Structural Material Development for the Long-Life Fast Reactor