Abstract
This study deals with the simultaneous measurement of the flow and stress of ultraviolet (UV) curable resin illuminated at UV ray. The flow is observed as particle trajectory patterns obtained using a particle tracking velocimetry technique, and stress as isochromatics, principal-stress directions and shear 45° obtained using a photoelastic technique, respectively; The specimens consist of glass plates, acrylic plates and UV curable resin in liquid form with acrylic powder. The specimens are illuminated with UV rays downwards from the upper side of the specimens, and the visual and photoelastic images of the resin in curing process are captured at a constant time interval using a digital and CCD cameras, respectively. Results indicated that the stresses in the resin during the curing, process depended on the degree of contact between the mold and the cured part of the resin and were almost independent on the flow of the uncured resin.
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