contributor author | B. Coluzzi | |
contributor author | A. Tuissi | |
contributor author | A. Biscarini | |
contributor author | G. Mazzolai | |
contributor author | F. M. Mazzolai | |
date accessioned | 2017-05-09T00:20:02Z | |
date available | 2017-05-09T00:20:02Z | |
date copyright | July, 2006 | |
date issued | 2006 | |
identifier issn | 0094-4289 | |
identifier other | JEMTA8-27084#254_1.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/133780 | |
description abstract | The internal friction Q−1 and the Young’s modulus E of NiTi based alloys have been measured as a function of temperature after various thermomechanical and hydrogen-doping treatments given to the materials. Hydrogen is found to play a major role introducing tall damping peaks associated with Snoek-type and H-twin boundary relaxations. Levels of Q−1 as high as 0.08 have been detected, which are among the highest to date measured in metal alloy systems. For appropriate alloy compositions, these peaks occur at around room temperature (for acoustical frequencies), thus providing a good opportunity to reduce machinery vibrations and noise pollution. In the paper, the conditions are highlighted under which maximum efficiency can be reached in the conversion of mechanical energy into heat. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | Effect of H-Doping on Damping Capacity of Various NiTi-Based Alloys at kHz Frequencies | |
type | Journal Paper | |
journal volume | 128 | |
journal issue | 3 | |
journal title | Journal of Engineering Materials and Technology | |
identifier doi | 10.1115/1.2203202 | |
journal fristpage | 254 | |
journal lastpage | 259 | |
identifier eissn | 1528-8889 | |
keywords | Temperature | |
keywords | Alloys | |
keywords | Damping | |
keywords | Frequency | |
keywords | Nickel titanium alloys | |
keywords | Elasticity | |
keywords | Hydrogen AND Internal friction | |
tree | Journal of Engineering Materials and Technology:;2006:;volume( 128 ):;issue: 003 | |
contenttype | Fulltext | |