The design of equipment and thermal routines for annealing glass particles |
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| Authors: | J. Locke C.A. Hayes D.G. Sanger |
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| Affiliation: | Central Research Establishment, Home Office Forensic Science Service, Aldermaston, Reading, Berkshire, RG7 4PN U.K. |
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| Abstract: | Equipment for annealing casework sized glass particles is described. Investigations were carried out using a simple muffle furnace, a temperature programmed furnace and a metal sample holder. Because they produced a uniform and reproducible thermal environment, best results were obtained from a combination of the temperature programmed furnace and the metal sample holder. Refractive index changes for window and toughened glass specimens were investigated and a simple, reproducible annealing routine for casework was devised. |
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| Keywords: | Criminalistics Glass Refractive index Annealing Programmable furnace |
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