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On stick-slip homoclinic chaos and bifurcations in a mechanical system with dry friction
(World Scientific Publ Co Pte Ltd, 2001-07-01)
In this paper we consider a self-excited mechanical system by dry friction in order to study the bifurcational behavior of the arisen vibrations. The oscillating system consists of a mass block-belt-system which is ...
Internal friction measurements in Nb-0.3wt.%Ti containing oxygen
(Editions Physique, 1996-12-01)
Internal friction measurements were made in the Nb-Ti alloy containing 0.3 wt. % of Ti, doped with various quantities of oxygen (0.04 to 0.08 wt. %) utilizing a torsion pendulum. These measurements were performed in the ...
Influence of interstitial elements on internal friction measurements in Nb and Nb-Zr alloys
(Editions Physique, 1996-12-01)
Internal friction and frequency measurements as a function of temperature have been carried out in Nb and Nb-Zr policrystalline samples, using a torsion pendulum in the temperature range between 300K and 700K the heating ...
Internal friction and frequency measurements in molybdenum containing oxygen and nitrogen
(Editions Physique, 1996-12-01)
We have measured internal friction and frequency as a function of temperature in molybdenum containing oxygen and nitrogen in solid solution. These measurements were performed by a torsion pendulum operating in the temperature ...
Friction coefficient and wear mode transition in micro-scale abrasion tests
(2011)
The purpose of this work was to conduct ball-cratering wear tests to monitor both normal and tangential forces. Balls of 52100 steel, a specimen of H10 tool steel and an abrasive slurry prepared with silicon carbide particles ...
Stress-induced ordering due heavy interstitial atoms in Nb-0.3 wt.% Ti alloys
(Elsevier B.V., 2005-04-15)
The mechanical properties of metals with bee structure, such as niobium and their alloys, are changed of a significant way by the introduction of heavy interstitial elements. These interstitial elements (oxygen, for example) ...
Oxygen mobility in SmBa2Cu3O7-delta measured by anelastic spectroscopy
(Elsevier B.V., 2006-12-20)
Anelastic spectroscopy has been performed on a sample of superconducting oxide SmBa2Cu3O7-delta (SBCO) using a torsion pendulum operating with frequency around 10 Hz. A thermally activated relaxation peak is observed near ...
Tool wear evaluations in friction stir processing of commercial titanium Ti-6Al-4V
(2013)
This research addresses the application of friction stir welding (FWS) of titanium alloy Ti-6Al-4V. Friction stir welding is a recent process, developed in the 1990s for aluminum joining; this joining process is being ...