the static pull-in instability of beam-type micro-electromechanical systems is theoretically investigated. two engineering cases including cantilever and double cantilever micro-beam are considered. considering the mid-plane stretching as the source of the nonlinearity in the beam behavior, a nonlinear size-dependent euler-bernoulli beam model is used based on a modified couple stress theory, c...

drying properties of high moisture potato slices with initial moisture content of about 4.06 (db) under thin layer fixed, semi fluidized and fluidized bed conditions were studied. drying air temperatures of 40, 50, 60 and 70°c were applied in experiments using a laboratory fluidized bed convective dryer. in order to predict the drying behavior of potato slices, seven thin layer drying models we...

recently, a large amount of studies have been related to nonlinear systems with multi-degrees of freedom as well as continuous systems. the purpose of this paper is to optimize passive vibration absorbers in linear and nonlinear states for an euler-bernoulli beam with a nonlinear vibratory behavior under concentrated moving load. the goal parameter in the optimization is maximum deflection of t...

This study demonstrated that the gas flow direction in laser beam powder bed fusion (PBF-LB) significantly affects crystallographic texture evolved products. The effect on is attributed to difference melt pool depth, which depends direction. was shallower when scanning and directions were parallel than they perpendicular. phenomenon should be of particular concern applying Scan Strategy_XY wher...

This work reports the additively manufactured NiAl bronze alloys via electron beam powder bed fusion (EB-PBF) that exhibit improved wear resistance without an increase of friction, exceeding those conventional hot-rolled counterparts. High is attributed to formation a Cu–O-rich transfer layer, and exceptional mechanical strength induced by integrated effects including uniformly distributed prec...

Abstract In additive manufacturing, the thermal history of a part determines its final microstructural and mechanical properties. The factors leading to specific temperature profile are diverse. For integrity parameter setting established, periphery variations must also be considered. present study, iron was processed by electron beam powder bed fusion. Parts realized two process runs featuring...

several methods are used to decrease seed drying time and enhance the quality of dried seeds. influidization methods, good aeration occurs during the drying process. in this research, conditioned seedswith 20% d.b. moisture content were dried at 30°, 40°, 50° and 60°c using three bed conditions (fixed,minimum fluidized, fluidized). all experiments were done using a batch-type fluidized bed drye...