...Toshimichi Fukuoka; Masataka Nomura; Takashi Nishikawa Sealing of contained fluids is the primary performance required for pipe flange connections. It is well known that the leakage is likely to occur when contained fluids at high temperature are concerned. Due to the differential thermal expansion...

...Gerry Slagis Piping thermal expansion stress limits for ASME Section III Class 2 and 3 piping are directly based on the original thermal expansion rules for B31.1 piping published in 1955. Temperature limits for B31 piping are much higher than for Class 2/3 nuclear piping. The fundamental concern...

... rise to stress in the film due to lattice mismatch, differing coefficient of thermal expansion, chemical reactions, or other physical effects. Therefore, in general, the weakest link in this composite system often resides at the interface between the thin film and the substrate. In order to make...

... firing and firing simulation suggests the following key failure mechanisms common to metals and Si 3 N 4 . (i) High near-bore transient temperatures increase thermal expansion compression and concurrently decrease the elevated temperature strength. For metals, the thermal compression stress greatly...

.... Traditionally though, using composites has been difficult because of the coefficient of thermal expansion mismatch between the steel substrate and the composite jacket, which causes a gap after manufacturing. Dealing with this mismatch has greatly complicated the manufacturing process in the past to the point...

... equations necessary to predict the temperature profiles and thermal expansion difference between the joint components necessary for the evaluation of the load redistribution for the two cases of a flange pair and a flange with a cover plate. The results from the theoretical models are verified by comparison...

... pressure caused by differential thermal expansion. Critical crack sizes for brittle fracture are generally very small, albeit larger for Si 3 N 4 than SiC due to lower liner stresses and higher fracture toughness for Si 3 N 4 . Contributed by the Pressure Vessels and Piping Division for publication...

...Junes A. Villarraga; Jose´ F. Rodrı´guez; Cora Martı´nez A formulation using the finite element method is presented in this paper to analyze stresses and displacements of underground pipelines with initial imperfections. The formulation includes both thermal expansion of the pipeline and internal...

... distribution T i inner temperature T o outer temperature x , y , z Cartesian coordinates Greek Symbols α thermal expansion coefficient ν Poisson’s ratio φ parametric angle for elliptical cracks θ angular...