investment casting is a versatile manufacturing process to produce high quality parts with high dimensional accuracy. the process begins with the manufacture of wax patterns. the dimensional accuracy of the model affects the quality of the finished part. the present study investigated the control and optimization of dimensional deviations in wax patterns. a mold for an h-shaped wax pattern was ...

in order to reduce both the weight of vehicles and the damage of occupants in a crash event simultaneously, it is necessary to perform a multi-objective optimization of the automotive energy absorbing components. in this paper, axial impact crushing behavior of the aluminum foam-filled thin-walled tubes are studied by the finite element method using commercial software abaqus. comparison of the...

Abstract In this study, a novel method is proposed to optimize the reinforced parameters influencing bearing capacity of shallow square foundation resting on sandy soil with geosynthetic. The be optimized are reinforcement length (L), number layers ( N ), depth topmost layer geosynthetic (U), and vertical distance between two (X). To achieve objective, 25 laboratory small-scale model tests were...

different approaches have been proposed for feature selection to obtain suitable features subset among all features. these methods search feature space for feature subsets which satisfies some criteria or optimizes several objective functions. the objective functions are divided into two main groups: filter and wrapper methods.  in filter methods, features subsets are selected due to some measu...

Many Multiple Objective Genetic Algorithms (MOGAs) have been designed to solve problems with multiple conflicting objectives. Incremental approach can be used to enhance the performance of various MOGAs, which was developed to evolve each objective incrementally. For example, by applying the incremental approach to normal MOGA, the obtained Incremental Multiple Objective Genetic Algorithm (IMOG...

A knowledge-based computer-aided design tool for microelectromechanical systems (MEMS) design synthesis called case-based synthesis of MEMS (CaSyn-MEMS) has been developed. MEMS-based technologies have the potential to revolutionize many consumer products and to create new market opportunities in areas such as biotechnology, aerospace, and data communications. However, the commercialization of ...

Natural fiber composites are a group of materials that have gained increasing attention in recent years due to their potential replace traditional various applications. However composite made up layers fibers and resin can separate from each other during drilling, leading delamination. This paper proposes multi-objective optimization approach for drilling natural composites, considering three k...

Abstract This paper presents a case study of applying Genetic Algorithm (GA) coupled with Monte Carlo N-Particle Transport (MCNP) and PARET codes for thermal-hydraulic safety analysis to optimize the fuel reload TRIGA Mark II Moroccan research reactor. Based on radial distribution 238U burnup ratio inside reactor core, five most burned elements were replaced by others fresh (12 % wt uranium) us...

This study focusses on a two objective type-2 simple assembly line balancing problem. Its primary is minimizing the cycle time, or equivalently, maximizing production rate of line. Minimization workload imbalance among workstations considered as secondary objective. Since problem known to be intractable, reactive tabu search algorithm proposed for solution. Although well-known meta-heuristic pr...

In this paper power quality of 3-bus solar-based hybrid system has been presented (where one or more than distribution generator unit is connected to the grid). The injection solar into grid-connected systems creates problems such as current consistency, electrical fluctuations, and inefficient demand. A control strategy based on a real-time self-regulation method for autonomous microgrid opera...