Development of sensitometric techniques for the characterization of stereolithographic resins

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Title: Development of sensitometric techniques for the characterization of stereolithographic resins
Author: Hardesty, Rudd Matthew
Abstract: Four desktop sensitometers of stereolithographic resins were created and tested against the characteristic curves of the resins produced under exposure conditions used with a Stereolithographic Apparatus. Two sensitometers measure the percent conversion as a function of exposure, one measures the optical density, and the fourth is an attempt to reproduce the characteristic curve with an alternate exposure source. It was concluded that the slopes of the characteristic curves can be determined by measuring the optical density of the resins. However, the slopes cannot be determined by measuring the percent conversion of the resins as a function of exposure. The critical exposures of the resins can be determined from the induction periods measured by the percent conversion sensitometers. The characteristic curves produced with the fourth sensitometer have no correlation with the actual characteristic curves.
Record URI: http://hdl.handle.net/1850/11735
Date: 1994-08

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