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The purpose of this work was to study laser-assisted machining (LAM) according to the tool path inclination angle of a titanium alloy workpiece. Previous studies have investigated using LAM for the linear machining of difficult-to-cut materials. However, during the linear machining of an inclined planar workpiece, the laser spot is deformed into an elliptical shape, and then, the tool follows the long major axis of the elliptical laser spot. For tool path inclination angle machining, the tool follows the arbitrarily oriented direction of the elliptical laser spot. Thus, determining the preheating temperature of the workpiece by tool path inclination angle processing is different from that of linear processing. In this work, a study was carried out to optimize the preheating and machining based on the tool path inclination angle. The optimal laser power according to tool path inclination angle was determined through thermal analysis, and the thermal analysis results were compared with the results from preheating experiments. Also, machining experiments were conducted using the as-determined laser power. [ABSTRACT FROM AUTHOR]

This paper presents the development of a genetic algorithm for determining a common linear machine sequence for multi-products with different operation sequences and facilities with a limited number of duplicate machine types available for a job. This work aims to minimize the total flow distance traveled by products, reduce the number of machines arranged in the final linear sequence, and decrease the total investment cost of the machines used in the final sequence. We assume that product flow runs only in the forward direction, either via in-sequence or bypass movement. We demonstrate the effectiveness of the proposed algorithm by solving a typical layout design problem taken from literature, and several randomly generated problems. Results indicate that the proposed algorithm serves as a practical decision support tool for resolving layout problems in manufacturing facilities. [ABSTRACT FROM AUTHOR]