Tribological performance of the blend PBT and short aramid fibers
Journal Title: INCAS BULLETIN - Year 2015, Vol 7, Issue 1
Abstract
Polybutylene terephthalate (PBT) and its aramid fiber composite (10 wt.%) were investigated in order to measure their wear and frictional properties under variations of applied load (5 N, 10 N, 15N) and velocity (0.25 m/s, 0.5 m/s and 0.75 m/s), in dry regime. The tribological properties of the composite were evaluated using a block-on-ring tribotester. The worn surface was investigated with a scanning electronic microscope and the authors pointed out particular processes taking place into the superficial layers of the friction couple. During the tests, temperature was measured by an infrared camera near to the contact of bodies that are involved and the friction coefficient was monitored by the help of the tribometer UMT-2 (Brucker-CETR®).
Authors and Affiliations
BOTAN Mihail , ROMAN Igor , GEORGESCU Constantin, CANTARAGIU Alina , DELEANU Lorena
An Interpretation of the “Black Energy” in Universe by Using a Hydro-Dynamical Analogy with Newton Gravity
There are arguments proving that what we see now as “normal energy” (including the equivalent mass-energy) represents only 5% of the total energy of the Universe [1]. The rest is invisible meaning that no widely accepted...
Analysis Regarding the Effects of Atmospheric Turbulence on Aircraft Dynamics
This paper will analyze the Gust Load Alleviation (GLA) systems which can be used to reduce the effects of atmospheric turbulences generated by wind gusts on vertical acceleration of aircraft. Their purpose is to reduce...
TOWARDS THE ELECTRIC PROPULSION
The paper presents benefits and drawbacks of the electric propulsion for the case of a ten seat commuter aircraft. An efficiency evaluation is made for an electric version of AEROTAXI, considered as a reference. The eval...
Integral LQR Control of a Star-Shaped Octorotor
The paper starts by presenting the model of the star-shaped octorotor. LQR control is chosen to stabilize the attitude and altitude of the vehicle. Waypoint navigation is also implemented. Numerical simulations demonstra...
Experimental Methods for UAV Aerodynamic and Propulsion Performance Assessment
This paper presents an experimental method for assessing the performances and the propulsion power of a UAV in several points based on telemetry. The points in which we make the estimations are chosen based on several cr...