Modulus of elasticity and internal friction of steel 110G13L with different amounts of phosphorus

1977 ◽  
Vol 19 (2) ◽  
pp. 142-144
Author(s):  
Yu. D. Chizhenko ◽  
A. Ya. Khrapov ◽  
L. E. Agryzkov
Keyword(s):  
Internal Friction ◽  
Modulus Of Elasticity ◽  
Steel 110G13l

scholarly journals Acoustic properties in Arizona cypress logs: A tool to select wood for sounding board

BioResources ◽  
2010 ◽  
Vol 6 (1) ◽  
pp. 386-399 ◽  
Author(s):  
Mehran Roonia ◽  
Mohammad-Ali Hossein ◽  
Seyed-Ehsan Alavi-Tabar ◽  
Ajang Tajdini ◽  
Ahmad Jahan-Latibari ◽  
...  
Keyword(s):  
Internal Friction ◽  
Conversion Efficiency ◽  
Modulus Of Elasticity ◽  
Growth Ring ◽  
Ring Width ◽  
Sound Radiation ◽  
Musical Instruments ◽  
Acoustic Properties ◽  
Growth Rings ◽  
Growth Ring Width

In this study, variation in acoustic properties of Arizona cypress wood was monitored from pith to bark as affected by tapering of the growth ring width. Specific modulus of elasticity, acoustic coefficient, damping, and acoustic conversion efficiency were calculated. It was shown that the outer parts of the stem, close to the bark containing narrower growth rings, exhibited lower damping due to internal friction and higher sound radiation. Our finding theoretically justified the luthier craftsmen’s traditional preference toward timbers with narrow growth rings to make sounding boards in musical instruments.

scholarly journals Mechanical properties of potato starch modified by moisture content and addition of lubricant

2014 ◽  
Vol 28 (4) ◽  
pp. 501-509 ◽  
Author(s):  
Mateusz Stasiak ◽  
Marek Molenda ◽  
Józef Horabik ◽  
Peter Mueller ◽  
Ireneusz Opaliński
Keyword(s):  
Mechanical Properties ◽  
Internal Friction ◽  
Moisture Content ◽  
Bulk Density ◽  
Modulus Of Elasticity ◽  
Potato Starch ◽  
Magnesium Stearate ◽  
Wall Friction ◽  
Considerable Influence ◽  
Angle Of Internal Friction

Abstract Laboratory testing was conducted to deliver a set of characteristics of structure and mechanical properties of pure starch and starch with an addition of a lubricant - magnesium stearate. Considerable influence of moisture content of potato starch was found in the case of density, parameters of internal friction, coefficients of wall friction and flowability. Elasticity was found to be strongly influenced by water content of the material. Addition of magnesium stearate affected density and parameters of flowability, internal friction and elasticity. Bulk density increased from 604 to 774 kg m-3 with decrease in moisture content of potato starch from 17 to for 6%. Addition of magnesium stearate resulted in approximately 10% decrease in bulk density. Angle of internal friction obtained for 10 kPa of consolidation stress decreased from 33 to 24º with increase in moisture content, and to approximately 22º with addition of the lubricant. With an increase of moisture content from 6 to 18% and with addition of the lubricant, the modulus of elasticity during loading decreased from approximately 1.0 to 0.1 MPa. Modulus of elasticity during unloading was found in the range from 19 to 42 MPa and increased with increase of moisture content and amount of lubricant.

Modulus of elasticity and internal friction of graphitized steel in relation to temperature

1978 ◽  
Vol 20 (11) ◽  
pp. 944-946 ◽  
Author(s):  
N. A. Chelyshev ◽  
L. V. Shchekurskaya ◽  
F. I. Ardovskii
Keyword(s):  
Internal Friction ◽  
Modulus Of Elasticity

Internal friction in a martensitic high-carbon steel

2001 ◽  
Vol 81 (12) ◽  
pp. 2797-2808
Author(s):  
Rustem Bagramov, Daniele Mari, Willy Benoi
Keyword(s):  
Carbon Steel ◽  
Internal Friction ◽  
High Carbon Steel ◽  
High Carbon

A simple system to measure internal friction and creep

1992 ◽  
Vol 2 (9) ◽  
pp. 1779-1786
Author(s):  
A. M. Bastawros ◽  
M. Z. Said
Keyword(s):  
Internal Friction ◽  
Simple System

Internal friction and some other properties of shape memory Fe-Mn-Si based alloys

2003 ◽  
Vol 112 ◽  
pp. 397-400 ◽  
Author(s):  
P. G. Yakovenko ◽  
O. Söderberg ◽  
K. Ullakko ◽  
V. K. Lindroos
Keyword(s):  
Internal Friction ◽  
Shape Memory
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