Saturday 30 October 2010

Wseas Transactions

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Transactions: INTERNATIONAL JOURNAL of MATHEMATICAL MODELS AND METHODS IN APPLIED SCIENCES
Transactions ID Number: 19-602
Full Name: Adel Abdel-Rahman
Position: Professor
Age: ON
Sex: Male
Address: Beirut Arab University
Country: LEBANON
Tel: 01837298
Tel prefix: 961
Fax: 9617985499
E-mail address: adelabdel_rahman@hotmail.com
Other E-mails: a.abdelrahman@bau.edu.lb
Title of the Paper: A Closed-form Expression for an Abrasive Waterjet Cutting Model for Ceramic Materials
Authors as they appear in the Paper: Abdel-rahman Adel
Email addresses of all the authors:
Number of paper pages: 8
Abstract: The abrasive waterjet cutting technique is a controlled erosive process in which the impact of high velocity water and abrasives cause cutting of the target material. Advanced engineering ceramics materials have been used in many applications. Cutting of such materials by abrasive waterjet is becoming the recent cutting technique. In the present study, an elastic-plastic erosion model was adopted to develop an abrasive waterjet model for cutting brittle materials. As a result, a closed-form cutting model based on fracture mechanics was derived and introduced. The suggested model predicts the maximum depth of cut of the target material as a function of the fracture toughness and hardness, as well as process parameters. The maximum depth of cut predicted by the suggested model was compared with published experimental results for AD99.5 ceramic material. The effect of process parameters on the maximum depth of cut for the AD99.5 ceramic material is also studied!
and compared with experimental work. The comparison reveals that there is a good agreement between the model predictions and experimental results, where the difference between the predicted and experimental values of the maximum depth of cut was found to take an average value of 3.9%. The predicted depth of cut of the present model for 7 different ceramic materials was also compared with that by a previous model, where the two models were found to predict the same maximum depth of cut within an average value of 4%.
Keywords: Abrasive Waterjet, Cutting ceramics, Waterjet cutting, Waterjet modeling, High-pressure waterjet
EXTENSION of the file: .doc
Special (Invited) Session: An Abrasive Waterjet Model for Cutting Ceramics
Organizer of the Session: 202-134
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