In this study, the tribological properties of hybrid polytetrafluoroethylene (PTFE)/Nomex fabric/phenolic resin composites were investigated under three operating conditions: dry sliding, dry sliding after soaking in water for 12 h, and water dripping lubrication.The friction coefficient (COF) was measured with a pin-on-disk tribometer.The wear sur
Abstract The profile of tephra concentration along a volcanic plume (i.e., the tephra segregation profile) is an important source parameter for the simulation of tephra VENAFORCE GEL transport and deposition and thus for the tephra sedimentation load.The most commonly-used approach is to treat an eruption as a single event (i.e., with a time-averag
Helicopters are still an indispensable addition to aviation in this day and age.They are characterized by their ability to master Hand both forward flight and hover.These characteristics result in a wide range of possible operations.Key for the design of the rotor blades is a blade design that always represents a compromise between the different fl
Community-university partnerships have been shown to produce significant value for both sets of partners by providing reciprocal learning opportunities, (re)building bonds of trust, and creating unique venues to formulate and apply research that responds to community interests and informs collaborative solutions to community problems.For such partn