Phase change measurement, and speed of sound and attenuation determination, from underwater acoustic panel tests

2003 ◽  
Vol 113 (3) ◽  
pp. 1518-1525 ◽  
Author(s):  
Jean C. Piquette ◽  
Anthony E. Paolero
Keyword(s):  
Phase Change ◽  
Speed Of Sound ◽  
Underwater Acoustic ◽  
Change Measurement

Study of optical phase change measurement using the Hilbert Transform and interferometric techniques

2011 ◽  
Author(s):  
Joseph A. Duperre III ◽  
Carlos O. Font ◽  
G. Charmaine Gilbreath ◽  
David Bonanno ◽  
Eshani Tarpara ◽  
...  
Keyword(s):  
Phase Change ◽  
Hilbert Transform ◽  
Optical Phase ◽  
Change Measurement ◽  
The Hilbert Transform

Precise interferometric length and phase-change measurement of gauge blocks based on reproducible wringing

2000 ◽  
Vol 39 (4) ◽  
pp. 526 ◽  
Author(s):  
Alexandre Titov ◽  
Igor Malinovsky ◽  
Hakima Belaïdi ◽  
Ricardo S. França ◽  
Carlos A. Massone
Keyword(s):  
Phase Change ◽  
Change Measurement

Experimental study of the heat generations of Li/SOCl2 and Li/SO2 batteries using a phase-change measurement method

2014 ◽  
Vol 116 (2) ◽  
pp. 1011-1017 ◽  
Author(s):  
Wenwei Zhang ◽  
Xingjuan Zhang ◽  
Chao Wang ◽  
Guangfeng Yu ◽  
Chunxin Yang
Keyword(s):  
Experimental Study ◽  
Phase Change ◽  
Measurement Method ◽  
Change Measurement

Phase change measurement of birefringent optical devices with white light interferometry

2013 ◽  
Vol 53 (1) ◽  
pp. 141 ◽  
Author(s):  
Khos-Ochir Tsogvoo ◽  
Purevdorj Munkhbaatar ◽  
Byung Kwan Yang ◽  
Jin Seung Kim ◽  
Kim Myung-Whun
Keyword(s):  
Phase Change ◽  
White Light ◽  
Optical Devices ◽  
White Light Interferometry ◽  
Change Measurement

Acoustic Analysis Using Finite Element Method Considering Effects of Damping Caused by Air Viscosity in Audio Equipment

2010 ◽  
Vol 36 ◽  
pp. 282-286 ◽  
Author(s):  
Manabu Sasajima ◽  
Takao Yamaguchi ◽  
Akira Hara
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Numerical Calculation ◽  
Phase Change ◽  
Speed Of Sound ◽  
Acoustic Analysis ◽  
Sound Propagation ◽  
The Finite Element Method ◽  
Absorbing Materials ◽  
Element Method

The acoustic pathway in the enclosure of small headphones is very narrow. Therefore, the speed of sound propagation and the phase change because of the air viscosity. We have developed a new finite element method that considers the effects of damping due to air viscosity in the sound pathway. The new finite element method is obtained by improving the finite element method proposed by Yamaguchi for porous sound-absorbing materials. Moreover, we have attempted to obtain a numerical calculation of damping due to air viscosity by using the proposed finite element method.

Sign in / Sign up

Export Citation Format

Share Document