Experimental study of the absorption characteristics of some porous fibrous materials

2001 ◽  
Vol 62 (4) ◽  
pp. 447-459 ◽  
Author(s):  
Chao-Nan Wang ◽  
Jiunn-Hwan Torng
Keyword(s):  
Experimental Study ◽  
Fibrous Materials ◽  
Absorption Characteristics

scholarly journals Experimental study on the capillary absorption characteristics of rammed earth

2021 ◽  
Vol 283 ◽  
pp. 122689
Author(s):  
Margaux L. Indekeu ◽  
Chi Feng ◽  
Hans Janssen ◽  
Monika Woloszyn
Keyword(s):  
Experimental Study ◽  
Rammed Earth ◽  
Capillary Absorption ◽  
Absorption Characteristics

COMPUTATIONAL AND EXPERIMENTAL STUDY OF THE EFFECTIVE THERMAL CONDUCTIVITY OF FIBROUS MATERIALS

2021 ◽  
pp. 95-102
Author(s):  
N.N. Vorobev ◽  
◽  
D.Ya. Barinov ◽  
A.V. Zuev ◽  
S.I. Pakhomkin ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Experimental Study ◽  
Heat Flow ◽  
Porous Structure ◽  
Effective Thermal Conductivity ◽  
Fibrous Materials ◽  
Zone Method ◽  
Factors Influencing ◽  
Main Factors ◽  
Hot Zone

The article is devoted to the evaluation of the effect of porosity on the effective thermal conductivity of thermal insulation materials. The main factors influencing the thermal conductivity of the material, such as density, the type of porous structure of the material and humidity, are considered. The method of measuring the thermal conductivity by the stationary heat flow method and the hot zone method is described. A method for calculating the effective thermal conductivity of fibrous materials is presented. A computational and experimental study of the effective thermal conductivity is carried out and the results are analyzed.

Experimental Study on Ytterbium-Doped Single-Cladding Fiber Absorption Characteristics

2013 ◽  
Vol 40 (6) ◽  
pp. 0605003
Author(s):  
姜曼 Jiang Man ◽  
肖虎 Xiao Hu ◽  
周朴 Zhou Pu ◽  
王小林 Wang Xiaolin ◽  
刘泽金 Liu Zejin
Keyword(s):  
Experimental Study ◽  
Absorption Characteristics

Double Perforated Honeycomb Panel as a Low Frequency Acoustic Absorber

1997 ◽  
Vol 4 (1) ◽  
pp. 21-37
Author(s):  
C.F. Ng ◽  
Qin Hao-Ming
Keyword(s):  
Experimental Study ◽  
Sound Absorption ◽  
Low Frequency ◽  
Air Gap ◽  
Light Weight ◽  
Frequency Sound ◽  
Honeycomb Sandwich ◽  
Perforated Sheets ◽  
Absorption Characteristics ◽  
Honeycomb Panel

This report deals with a theoretical and experimental study of the low frequency sound absorption characteristics of perforated honeycomb sandwich panels. The derivations of formulae for absorption in terms of double perforation ratio and air gap are presented. Results show that the honeycomb absorber, with double perforated sheets, can be an effective low frequency absorber for frequencies down to 63 Hz. In addition, honeycomb panels have advantages over other low frequency absorbers in that they are light weight and strong.

scholarly journals Experimental study on the absorption characteristics of resonance-type brick/block walls.

1999 ◽  
Vol 20 (6) ◽  
pp. 433-438 ◽  
Author(s):  
Hikari Mukai ◽  
Shinichi Sakamoto ◽  
Hideki Tachibana
Keyword(s):  
Experimental Study ◽  
Absorption Characteristics

scholarly journals Experimental study on energy absorption characteristics of motorcycle front wheel—tyre assembly in frontal impact

2006 ◽  
Vol 11 (2) ◽  
pp. 131-142
Author(s):  
K S Tan ◽  
S V Wong ◽  
R S Radin Umar ◽  
A M S Hamouda ◽  
M M H Megat Ahmad
Keyword(s):  
Experimental Study ◽  
Energy Absorption ◽  
Front Wheel ◽  
Frontal Impact ◽  
Absorption Characteristics

Experimental study of corrugated tubes under lateral loading

2012 ◽  
Vol 226 (2) ◽  
pp. 109-118 ◽  
Author(s):  
A Eyvazian ◽  
I Akbarzadeh ◽  
M Shakeri
Keyword(s):  
Experimental Study ◽  
Energy Absorption ◽  
Lateral Loading ◽  
Lateral Direction ◽  
Static Tests ◽  
Crushing Force ◽  
Innovative Solution ◽  
Thin Walled ◽  
Energy Absorbers ◽  
Absorption Characteristics

Thin-walled tubes are widely used as energy absorbers in various vehicles and moving parts. The objective of this study is to investigate the energy absorption characteristics of tubes with corrugations in different geometries, under lateral loading. In order to produce corrugations, an innovative solution is introduced. Quasi-static tests were conducted to study the effect of changing the corrugation geometry (type and amplitude). The results show that tubes with corrugations have a higher mean crushing force which is directly proportional to the number of corrugations and their amplitudes. Moreover, it was observed that corrugated tubes can absorb approximately four times more energy than the tubes without corrugations in the same sizes and weights. Finally, it was found that corrugated tubes are more effective in lateral direction as energy absorbers, as they present suitable force–deflection responses.

scholarly journals Experimental study on the sound absorption characteristics of continuously graded phononic crystals

AIP Advances ◽  
2016 ◽  
Vol 6 (10) ◽  
pp. 105205 ◽  
Author(s):  
X. H. Zhang ◽  
Z. G. Qu ◽  
X. C. He ◽  
D. L. Lu
Keyword(s):  
Experimental Study ◽  
Sound Absorption ◽  
Phononic Crystals ◽  
Absorption Characteristics
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