Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : September 05, 2021 - September 08, 2021
In order to understand the actual strength and shape of pipe joints, and the difference from the nominal values determined by the code, material certification data and shape measurement data in the previous studies were collected. It was found that the yield stress and ultimate strength were approximately 20-40% larger than the values determined by the Japanese industrial standard. As for the shape data, the outer diameters and the wall thicknesses were investigated. The outer diameters were almost same with the nominal value. It was confirmed that the wall thickness of the elbow pipe tended to be slightly thicker on the intrados side and slightly thinner on the extrados side, and the variation from the nominal value is up to about 8%. As for the tee pipe, the wall thicknesses were distributed unevenly in the pipe joint, and the thickest position was the bottom of the tee pipe. The maximum wall thickness was 38% larger than the nominal value.
