MaterialsDude
Materials
Well I am doing another anlysis on why some Type 304 stainless steel tubes failed by fretting in one of our exchangers. One of the things I noticed with the tubes located on the outrside perimeter of the tube bundle is that they tend to fail mainly by fretting. I know fretting in exhcnager tubes is usually a result of vibrations by high velocities, but can't understand why the outside tubes are the most vulnerable.