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Article
Publication date: 10 April 2009

Faruq Al‐Omari, Mohammad Al‐Jarrah, Mohammad Omari and Mohammed Hayajneh

The purpose of this paper is to study the effect of the height and diameter of the dies as well as work‐piece dimensions, on stresses and strains on dies in the forging process…

Abstract

Purpose

The purpose of this paper is to study the effect of the height and diameter of the dies as well as work‐piece dimensions, on stresses and strains on dies in the forging process. This helps in developing a better understanding of the effect of process parameters. As a result, the manufacturing task could be accomplished with minimal number of trials.

Design/methodology/approach

After determining the most influencing parameters on the forging process, the mechanical part is drawn, size of initial billet and shape of punch and die are also determined to build a finite‐element model to represent the process. Several outputs are taken as an indication for die wear and process performance. Finally, a computer numerical control (CNC) code to manufacture the selected die is generated.

Findings

It was found that when the die diameter increases, the effective stress decreases. On other hand, it was found that the work required to finish the forging process is highly affected by the dimensions of work‐piece. Therefore, it is possible to save power if work‐piece dimensions are adjusted.

Originality/value

This paper was meant to be a universal step or guide in developing a computer aided design/computer aided manufacturing (CAD/CAM) system to design, simulate, and manufacture molds for the forging process using a statistical method.

Details

Engineering Computations, vol. 26 no. 3
Type: Research Article
ISSN: 0264-4401

Keywords

Article
Publication date: 9 November 2012

Faruq A. Al‐Omari, Osama D. Al‐Khaleel, Ghassan A. Rayyashi and Sameh H. Ghwanmeh

The purpose of this paper is to develop an innovative information hiding algorithm.

Abstract

Purpose

The purpose of this paper is to develop an innovative information hiding algorithm.

Design/methodology/approach

The proposed algorithm is based on image histogram statistics. Cumulative‐peak histogram regions are utilized to hide multiple bits of the secret message by performing histogram bin substitution. The embedding capacity, otherwise known as payload, and peak signal to noise ratio (PSNR), as well as security, are the main metrics used to evaluate the performance of the proposed algorithm.

Findings

According to the obtained results, the proposed algorithm shows high embedding capacity and security at comparable PSNR compared with existing hiding information techniques.

Originality/value

The simplicity, security, random distribution of embedding pixels, and on‐demand high capacity are the key advantages of the proposed approach.

Details

Journal of Systems and Information Technology, vol. 14 no. 4
Type: Research Article
ISSN: 1328-7265

Keywords

Article
Publication date: 10 August 2012

Faruq A. Al‐Omari, Osama D. Al‐Khaleel, Ghassan A. Rayyashi and Sameh H. Ghwanmeh

The purpose of this paper is to develop an innovative information hiding algorithm.

Abstract

Purpose

The purpose of this paper is to develop an innovative information hiding algorithm.

Design/methodology/approach

The proposed algorithm is based on image histogram statistics. Cumulative‐peak histogram regions are utilized to hide multiple bits of the secret message by performing histogram bin substitution. The embedding capacity, otherwise known as payload, and peak signal to noise ratio (PSNR), as well as security, are the main metrics used to evaluate the performance of the proposed algorithm.

Findings

According to the obtained results, the proposed algorithm shows high embedding capacity and security at comparable PSNR compared with existing hiding information techniques.

Originality/value

The simplicity, security, random distribution of embedding pixels, and on‐demand high capacity are the key advantages of the proposed approach.

Details

Journal of Systems and Information Technology, vol. 14 no. 3
Type: Research Article
ISSN: 1328-7265

Keywords

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