In this study, a 3 mm thickness of AlSi10Mg Casted alloy plates was used in the friction stir welding process. The experimentations were conducted Using design experiment to shorten number experiments and get optimal parameters by utilizing Gray relational analysis based on ultimate tensile hardness test results. Orthogonal array L9 (33) three main stages for each parameter, where tool velocity...

This research applied Fuzzy Delphi Analytic Hierarchy Process (FDAHP) to evaluate the critical success factors for New Product Development (NPD) by using a hybrid vehicle as an example. Grey Relational Analysis (GRA) is used to assess the level of gray relation among these factors, followed by empirical analysis to construct the NPD strategy. The empirical result illustrates that the indicators...

Warpage and shrinkage control are important factors in proving the quality of thin-wall parts in injection modeling process. In the present paper, grey relational analysis was used in order to optimize these two parameters in manufacturing plastic bush of articulated garden tractor. The material used in the plastic bush is Derlin 500. The input parameters in the process were selected according ...

In order to guarantee efficient query processing together with industrial strength, spatial index structures have to be integrated into fully-fledged object-relational database management systems (ORDBMSs). A promising way to cope with spatial data can be found somewhere in between replicating and non-replicating spatial index structures. In this paper, we use the concept of gray intervals whic...

In this paper, two sets of sufficient conditions are obtained to ensure the existence and stability of a unique equilibrium point of unforced first-order fuzzy relational dynamical systems by using two different approaches which are both based on the fuzzy relational matrix of the model.In the first approach, the equilibrium point of the system is one of the centers of the related membership fu...

The present research investigates cultural variation in conceptual frameworks for interpreting agency. A mind perception measure (Gray, Gray, & Wegner, 2007) was adapted for interviews with Indigenous Ngöbe adults in Panama and US college students. Participants ranked the agency capacities of various entities and provided explanations. Rankings varied systematically, with Ngöbe more likely to a...

This study investigated the optimization of three welding parameters (wire feed speed, arc voltage, and shielding gas flow rate) for SS 304H by using Taguchi based Grey relational analysis. In this research work, pure argon was used as shielding gas. Numbers of trials were performed as per L16 (4xx3) orthogonal array design and the mechanical quality such ultimate tensile strength, microhardnes...