The National Shipbuilding Research Program. Measuring a Complex Casting

Abstract : Within the last three years photogrammetry has been employed in real production situations by six shipbuilders in the United States. Five of them have applied the process repeatedly. This report describes a procedure for obtaining accurate dimensions of a complex casting. It should be of particular interest to quality assurance people and those responsible for fitting a casting to adjoining structure. Page 11 is especially noteworthy because it describes potential productivity gains in the entire process associated with complex castings including design, inspection and installation. It also identifies benefits that could be obtained, without the application of photogrammetry, if shipbuilders impose certain nominal dimensioning requirements on designers and if certain marking instructions are included in purchase specifications for castings.