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- W2079789984 abstract "The rolling noise reduction effectiveness of wheel and rail vibration absorbers was evaluated at Trimet in Portland, Oregon. Tests included tangent ballast and concrete tie track and curved track slab track with bi-block concrete ties. Under-car noise data were recorded throughout the system with and without wheel vibration absorbers. Results of the rolling noise tests are summarized for various combinations of treated and untreated rails and wheels. The wheel and especially the rail vibration absorbers significantly reduced rail vibration at audio frequencies, but had little effect on wayside rolling noise. Wayside noise at tangent track was slightly higher with rail vibration absorbers than without. However, the “singing rail” noise was eliminated entirely. The “singing rail” vertical vibration transmission spectrum had a pass-band characteristic as expected for periodic supports. The vibration data indicate that above 250 Hz the wheel was the dominant source of noise relative to the rail. A reduction of stick-slip noise was observed over most curves, though results were inconsistent." @default.
- W2079789984 created "2016-06-24" @default.
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- W2079789984 date "2013-11-01" @default.
- W2079789984 modified "2023-09-25" @default.
- W2079789984 title "Noise reduction performance of wheel and rail vibration absorbers" @default.
- W2079789984 doi "https://doi.org/10.1121/1.4831050" @default.
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