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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/13351

Title: Dynamic fracture of manufactured powder compacted cylindrical components
Authors: Es-Saheb, M
Keywords: Damage theory; Failure analysis of powder compacts; Fracture mechanics; Powder technology
Issue Date: 2006
Publisher: Elsevier
Citation: Journal of Materials Processing Technology Volume 178, Issue 1-3, 14 September 2006, Pages 143-147
Abstract: A theoretical model for dynamic failure of powder compacts is presented. The model is a modification of Chen's model for brittle materials to adapt with the special features of powder compacts. The model uses the damage mechanics to evaluate a linear isotropic damage parameter (D) from initial damage state of compacts (D0) to one at the final failure. The initial damage state (D0) depends on the degree of compaction and the variables incorporated in the compaction process of a pure material with assumed zero damage state. Series of cylindrical powder compacts made of di-pac sugar, sodium chloride, potassium bromide, and paracetamol d.c. powders are loaded dynamically according to the traditional known diametral compression (Brazilian) test. These materials are typical of the many powders used in the pharmaceutical industry. Thus, these experiments are utilized to obtain the fracture strain rate and the material constants involved in the model. The experimental results are found to be in a very good agreement with the suggested model.
URI: http://hdl.handle.net/123456789/13351
ISSN: 09240136
Appears in Collections:College of Engineering

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