Studying gear power loss theoretically and determining the efficiency of a helical drive depend on many geometrical working parameters, such as rotation speed, tooth number, ratio, helix angle, torque, among others. In this paper, Plackett–Burman screening design Box–Behnken response-surface method are used to consider how above parameters influence efficiency, experimental models provided eval...

The interaction effect of eight operating factors on the degradation three organic dyes different structures (Cibacron green, methylene blue and methyl orange) has been studied. Effect had evaluated statistically using Plackett-Burman screening design which ex-tracted valuable information most important parameters their interactions. goodness model fit was checked by determination coefficient R...