Method for detecting density gradients
AssigneeThe Ohio State University Research Foundation
InventorJohn J. Lannutti
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Abstract
The present invention includes molding additives and molded materials. This invention also includes machines or electronic apparatus using these aspects of the invention. The present invention also includes methods and processes for making and using these devices and systems. In a preferred embodiment, a dye that fluoresces via ultraviolet absorption is dispersed in an organic additive. The additive is mixed with a molding material that is then formed into a shaped article by compaction. The resultant shaped article is then observed under an ultraviolet lamp to determine fluorescence variation, such variation corresponding to density gradients in the article.
Claims16
A method for detecting density gradients in a sand mold, said method comprising the steps of:
- (a) disbursing a material additive in a formable sand material, said material additive comprising a fluorescence-capable dye;
- (b) molding said formable sand material into a sand mold;
- (c) examining the fluorescence of a region of said sand mold;
- and
- (d) determining the density gradient in said sand mold.
Dependencies are inferred from the claim text.