The development of advanced metal products requires "clean" liquid metals as their basic materials. There are more and more applications for which the cleanliness of the liquid metals has to be qualified that the number and size of inclusions must be controlled below some acceptable limits. Such demands for quality have resulted in the development of measuring systems that can count the number and size distribution of inclusions. One such device, the so-called LiMCA (Liquid Metal Cleanliness Analyzer), which was developed at McGill University, measures inclusions in liquid metals and has been successfully used in the aluminum industry for years. / Digital Signal Processing (DSP) technology has been successfully applied to upgrade the LiMCA system. With this technology, the DSP-based LiMCA system is able to describe each LiMCA transient by a group of seven parameters, and with the help of them, classify it into a certain category. Moreover, it simultaneously counts the classified peaks based on their height and their time of occurrence. (Abstract shortened by UMI.)
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:QMM.22677 |
| Date | January 1994 |
| Creators | Shi, Xiaodong |
| Contributors | Carayannis, G. (advisor), Guthrie, R. I. L. (advisor) |
| Publisher | McGill University |
| Source Sets | Library and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada |
| Language | English |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
| Format | application/pdf |
| Coverage | Master of Engineering (Department of Mining and Metallurgical Engineering.) |
| Rights | All items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated. |
| Relation | alephsysno: 001448195, proquestno: MM05476, Theses scanned by UMI/ProQuest. |
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