In this paper, the shape influence of piezoelectric beams including triangle, trapezoid, rectangle, inverted trapezoid, convex parabola, concave parabola, and comb-shaped (a combination of two triangular beams with a connector of 4 mm length) are addressed and analyzed by FEM. The analysis is performed for a bimorph piezoelectric beam. The analyzed parameters include the beam length, thickness ...

In laser powder bed fusion, process-inherited thermal residual stress is developed due to the strain misfit between each layer. Detailed analysis and a prediction of are needed because it can induce distortions components and, in some serious cases, stress-induced defects such as cracking. this work, effects heat treatment conditions on maraging 18Ni-300 steel, fabricated by were investigated. ...

The concept of trapezoidal valued hesitant fuzzy set is introduced. Notion for distance between any two trapezoidal valued hesitant fuzzy elements is given. Using this proposed distance measure, we extend the technique for order preference by similarity to ideal solution for trapezoidal valued hesitant fuzzy sets. An example is constructed to show usefulness of this extension for multicriteria ...