Makale Koleksiyonu

Flame-retardant effects of cyclic phosphonate with HALS and fumed silica in polypropylene

Üreyen, Mustafa Erdem; Kaynak, Elif; Yüksel, Gamze (Wiley, 2019)

In this study, an N-alkoxy-hindered amine-based UV stabilizing agent (NOR-116) and nanosized silica particles (Aerosil R-972) were combined with a cyclic phosphonate based-flame retardant (FR; PCO-900) and incorporated ...
Energy, exergy analysis, and sustainability assessment of different engine powers for helicopter engines

Yıldırım, Elif; Altuntaş, Önder; Mahir, Necati; Karakoç, Tahir Hikmet (Taylor & Francis Inc, 2017)

The rapid decrease of energy resources has accelerated studies on energy efficiency. Energy efficiency refers to the effective use of energy, in other words, completing a specific task to the required standard by using ...
Dynamic instability of spinning launch vehicles modeled as thin-walled composite beams

Cihan, Melahat; Eken, Seher; Kaya, Metin Orhan (Springer Wien, 2017)

This paper presents the results of the dynamic stability analysis of a flexible spinning launch vehicle subjected to thrust modeled as a thin-walled composite beam with circular cross section. Due to the presence of ...