One of the research directions renewable energy sources is production biohydrogen from dark fermentation organic matter. During this process, since hydrogen produced along with a complex mixture other gases and vapors, gas requires further purification. relatively easy solution to problem might be utilization separation membrane modules given their low consumption, simple operation ease upscali...

Humidification process is one of the applications of membrane contactor in which partial pressure of a vapor in the gas stream increases. In this study, two different polyethersulfone and polyetherimide hollow fiber membranes were fabricated and characterized by various test methods and their performance in humidification process under different operating conditions was investigated. The PES me...

The paper discusses the experimental and finite element investigation into the failure mechanisms of uniply graphite-epoxy composite plates with circular holes loaded in uniaxial compression. The effect of hole size on the failure mode is established. Test specimens composed of a single layer of uniply graphite-epoxy sandwiched between two layers of transparent polyetherimide plastic were desig...

Fused filament fabrication (FFF), a form of filament-based material extrusion additive manufacturing (AM), is an extremely useful technique for the rapid production highly customized products; however, empirical evidence heavily relied upon understanding process. Initial modeling attempts have traditionally focused on predicting heat transfer and either interlayer diffusion adhesion or stress d...