Heuristics In The Alloy Designing
نویسندگان
چکیده
A systematic approach to the alloy designing problem, which is one of the typical ill-structur-ed problems considered to be solvable only by inspirations of a genius metallurgist, is discussed with respect to the heuristic approach. The procedure to design an alloy of required properties consists of two parts;searching of a starting point(a root) and constructing a tree in order to improve the properties of the material corresponding to the root by applying tactics. A CAD system having a data base for metallurgy is used in order to establish a method to perform this procedure.
منابع مشابه
Parameter Analysis and optimization of equal channel angular pressing extrusion for titanium alloy using Taguchi design of experiments method
In this paper the influence of different parameters on equal channel angular pressing (EADAP) of titanium alloy is investigated. In the first step the most important parameters are selected, and then a table of experiments is designed using Taguchi method. After designing the table of experiments, all of the experiments are simulated using Abacus software and the results are optimized using Tag...
متن کاملHub Covering Location Problem Considering Queuing and Capacity Constraints
In this paper, a hub covering location problem is considered. Hubs, which are the most congested part of a network, are modeled as M/M/C queuing system and located in placeswhere the entrance flows are more than a predetermined value.A fuzzy constraint is considered in order to limit the transportation time between all origin-destination pairs in the network.On modeling, a nonlinear mathematica...
متن کاملEffective heuristics and meta-heuristics for the quadratic assignment problem with tuned parameters and analytical comparisons
Quadratic assignment problem (QAP) is a well-known problem in the facility location and layout. It belongs to the NP-complete class. There are many heuristic and meta-heuristic methods, which are presented for QAP in the literature. In this paper, we applied 2-opt, greedy 2-opt, 3-opt, greedy 3-opt, and VNZ as heuristic methods and tabu search (TS), simulated annealing, and pa...
متن کاملAtomization of Alloy Constraints
Constraints in Alloy, a declarative modeling language, can be translated into Boolean logic and solved with a SAT solver. Atomization is a technique for improving the performance of Alloy analyses; it exploits typing relationships in an Alloy model and produces a semantically equivalent model that can be translated into Boolean form using fewer variables, hence creating a formula that can be so...
متن کاملSpectral descriptors for bulk metallic glasses based on the thermodynamics of competing crystalline phases
Metallic glasses attract considerable interest due to their unique combination of superb properties and processability. Predicting their formation from known alloy parameters remains the major hindrance to the discovery of new systems. Here, we propose a descriptor based on the heuristics that structural and energetic 'confusion' obstructs crystalline growth, and demonstrate its validity by exp...
متن کامل