... of 65°C and an internal pressure of 130 bars for 1000 hours and fatigue failure behavior of the GRE pipes were investigated. Pipes with a surface crack a/t = 0.5 and 0.3 were exposed to alternating internal pressure of 25 cycles/min and a load ratio of R = 0.05. Fatigue tests were performed at two load...

... and 0.05 to 0.10 μm for a set of smooth rods. SEM analyses revealed different kinds of flaws in the as-deposited films (virgin coating). Two samples, one from each set, were fatigue tested under uni-axial tension to determine the effect of the substrate surface roughness on the performance of the coating...

..., Measurement and Control. 123 : pp. 449 – 456 . feedback linearization input-output linearization pressure tracking force tracking electrohydraulic actuator state feedback with integral control fatigue testing Under simple practical assumptions, the theory of feedback linearization can...