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Articles by Z. Samad
Total Records ( 4 ) for Z. Samad
  A.B. Abdullah , L.Y. Chia and Z. Samad
  In this study, a sensitivity analysis method was used to identify the optimal machining conditions with respect to surface quality. Presently, programming Turbo C++ is used to evaluate the properties of machined surfaces with cutting parameters using arbitrary sets of experimental values. Based on the proposed equations and its differentiated function, the quality of surface roughness can be known clearly through the sensitivities of proper local deviations. This method shows the sensitivity of each surface roughness to the machining parameters. The variables investigated were cutting speed (Vc), depth of cut (d), feed rate (fr) and the surface roughness (Ra). The result indicates that machining parameter that had the highest influence on surface roughness is the feed rate followed by the cutting speed and the depth of cut. Finally experiment analysis was carried out to verify the analytical results.
  A.B. Abdullah , L.Y. Chia and Z. Samad
  A.B. Abdullah , K.S. Ling , Z. Samad and S. Sahudin
  An approach to optimal design of cold forging die is presented in this paper. The closed forging of the Universal joint was generated using three-dimensional CAD modeling software namely Solid works and analysis of stress and fatigue life were carried out. This study focused on the effects of corner radius of the die and part orientations to fatigue life of the die. The forging load is obtained by using Simplified Slab Method. The result indicate that corner radius and part orientation gives significant effect to reduction of stress on the die, thus increase the service life of the die.
  A.B. Abdullah and Z. Samad
  Die design in the forging process become crucial as the production cost and accuracy of the forged part being tighten. The study present a review of the current advanced of die design used in forging process and the system associated with in order to enhance the design process and performance of the die. At the end of this study future challenges of the die design area and the approach taken to develop a support system that can fulfilled the customer demand is also outlined.
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