Structural response of an aircraft fuselage to hydraulic system - A wave and mobility approach

Effects of mobility matrices completeness on component-based transfer path analysis methods with and without substructuring applied to aircraft-like components

“…13 for each source behavior and the OOP, TDOF and Z completenesses. The boxplots related to the FULL completeness are not shown, since the u 2 3 is perfectly predicted similarly to the case of the single interface point structure (see Fig. 9.a-d).…”

“…Multiple vibrating systems (or sources) are integrated in aircraft and can induce annoying noise in the cabin [1,2]. This noise, so-called structure borne noise, could be mitigated if the vibrating system, receiving structure and interfaces are well designed during the development phase.…”

Analysis and Characterization of Noise Generated in Heavy-Haul Railways in Brazil

“…Despite the convenience and advances provided by technological development, environmental degradation is accelerating as other sources of pollution arise. Amongst them, the environmental noise caused by sirens, automotive and domestic alarms, religious temples, horns, transportation systems and other sources, has become a cause of incidents in urban areas (Zannin and Bunn 2014;Fiorentin et al 2013Fiorentin et al , 2016Fiorentin et al , 2017. As a result of urbanization, economic growth and motorized traffic, noise pollution is one of the main sources of complaints in urban areas since it can be detrimental to health, being associated to hearing damage, cardiovascular diseases, irritability, sleep disturbance, headaches, high blood pressure and nervous stress reactions (Stassen et al 2008;Sánchez et al 2017).…”

“…The literature offers solutions for cars, aircraft, electrical systems and others (Fiorentin et al 2013(Fiorentin et al , 2016Oliveira et al 2008). There are, also, some solutions that can be applied to railways, but they are expensive and need to be customized for each railroad.…”

Experimental Characterization of Hydraulic System Sound

“…Isolation can be an effective noise control solution for hose clip designs but it is most suitable for higher frequencies [35]. This approach is also used when designing mounts for the machine cabs [36].…”