Abstract: This paper provides an overview of the aircraft turbine engine control research at NASA Glenn Research Center (GRC). A brief introduction to the engine control problem is first provided with a description of the state-of-the-art ...

Abstract: Several functional problems have been reported on pin and hanger system truss bridges, such as frozen pins, stress spikes in hangers, lack of expansion joint movements, etc. It has been difficult to develop a pin and hanger ...

Abstract: In this brief note, we present the results of a full finite deformation analysis of a system similar to the Oakland-San Francisco Bay Bridge saddle repair system. The dimensions used are for illustration purposes but are ...

Abstract: A cost-efficient sol–gel method was utilized to synthesize tin-doped copper oxide (Sn–CuO) capillary nanoporous coatings on copper substrates in this study. The micro/nanostructured surfaces exhibited superhydrophilicity ...

Abstract: Large cyclic loading on ballasted railroad tracks is now inevitable owing to an increased demand for freight and public transport. This leads to a progressive deterioration and densification of railroad ballast and ...

Abstract: In this paper we present a theory of finite deformation viscoelasticity. The presentation is not restricted to small perturbations from the elastic equilibrium in contrast to many viscoelasticity ...

Abstract: Focused ion beam (FIB) instruments have recently started to be seen in applications to organic materials such as polymers and biological samples. FIB provides a novel tool for sectioning ...