The oxide dispersion strengthened (ODS) ferritic steels are one of the most important in fuel cladding materials for 4th Generation nuclear reactors because their excellent mechanical properties such as irradiation resistance, swelling and elevated temperature tensile/compressive strength. Mechanical alloying (MA) is promising routes developing nanocrystalline ODS steel materials. For productio...

Many engineering applications demand materials with hard surface and tough core. In the present study, the enhancement of this combination of properties was achieved in aluminium alloy AA6061 by Severe Surface Mechanical Treatment (SSMT). The process parameters were optimized using Taguchi L9 orthogonal design of experiments. The size of shots, speed of revolution of shaft and duration of treat...

Surface roughness is used to determine and evaluate the quality of a final product in turned parts. In order to get better surface finish, the proper setting of cutting parameters is crucial before the process takes place. Titanium Grade 5 material is one whose surface hardness is high and it is used for making Aerospace engine components, titanium rod and ideal materials for medical implements...

Calibrations to existing cost of doing business in space indicate that to establish human presence on the Moon and Mars with the Space Exploration Initiative (SEI) will require resources, felt by many, to be more than the national budget can afford. In order for SEI to succeed, we must actually design and build space systems at lower cost this time, even with tremendous increases in quality and...

This paper presents the use of the Taguchi-regression method in developing the optimal plasma transferred arc welding (PTAW) process for obtaining high hardfacing quality characteristics. An “optimal” process means that the best performance characteristic would be produced while the least number of process parameters are involved. In the experimental tests, the surface hardening process is cond...

The present investigation deals with the optimization of parameters for better formability behaviour brass sheet metal under uniaxial isothermal Tensile Test by using Taguchi Design Experiments (DoE). standard L 9 (3 3 ) Orthogonal Array was formulated to run experiments based on robust design and accordingly conducted at orientation (0 0 , 45 90 ), temperature (300°C, 400°C, 500 °C), strain ra...

This article investigates a JIT single machine scheduling problem with a periodic preventive maintenance. Also to maintain the quality of the products, there is a limitation on the maximum number of allowable jobs in each period. The proposed bi-objective mixed integer model minimizes total earliness-tardiness and makespan simultaneously. Due to the computational complexity of the problem, mult...