منابع مشابه
Gray cast-iron water pipe metallurgy
The results of a metallographic study of grey cast iron water pipes are reported. These pipes had been installed between 1885 and 1973 in eight different water systems. Each pipe had been extracted during scheduled maintenance or failure repairs to provide data for a larger study to produce a methodology for determining the residual life of grey cast iron pipes. This metallographic study was co...
متن کاملFailure modes and mechanisms in gray cast iron pipe
Failures in cast iron water mains are more complex and diverse than is widely understood in the industry. This paper discusses the modes and causes of pipe failures that have been encountered during a three year investigation by the National Research Council Canada. In addition to corrosion, manufacturing defects, human error and unexpected levels of pipe loading all play a role in the large nu...
متن کاملResidual Stress Measurements of Cast Aluminum Engine Blocks Using Diffraction
Residual stresses and strains in as-cast and annealed aluminum engine blocks were mapped in the main web area above the bearing split using diffraction. Automated coordinate-mapping of the surface and bulk strains was accomplished with X-ray and neutron diffraction, respectively. LabVIEW-based software was developed for improved efficiency, flexibility and quality of data analysis. In the hoop ...
متن کاملThree dimensional mapping of corrosion pits in cast iron pipe using the remote field effect
The remote field effect is an electromagnetic method for inspecting pipes and tubing. It has recently been commercialised as a technique for inspecting gray cast iron and ductile iron water mains. However, commercial tools provide information on pits depths in the pipe and overall wall loss. Models of the mechanical behaviour of cast iron pipe also require information on pit width and length. T...
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ژورنال
عنوان ژورنال: Transactions of the Japan Society of Civil Engineers
سال: 1957
ISSN: 1884-4944,0047-1798
DOI: 10.2208/jscej1949.1957.44_22