Ultrasonic characteristic of phase shift of layered structure and the determination of layer thickness

2013 ◽  
Vol 60 (12) ◽  
pp. 2545-2552
Author(s):  
Gui-jin Yao ◽  
Hai-rong Zhang ◽  
Ke-xie Wang
Keyword(s):  
Phase Shift ◽  
Layer Thickness ◽  
Layered Structure

Complete determination of polarization state in the hard X-ray region

1991 ◽  
Vol 24 (6) ◽  
pp. 982-986 ◽  
Author(s):  
T. Ishikawa ◽  
K. Hirano ◽  
S. Kikuta
Keyword(s):  
Phase Shift ◽  
Linear Polarization ◽  
Amplitude Ratio ◽  
Polarization State ◽  
Perfect Crystal ◽  
Electric Vector ◽  
X Ray ◽  
Complete Determination ◽  
Unpolarized Radiation

A new method for complete determination of polarization state in the hard X-ray region is described. The system consists of a perfect-crystal phase retarder and a linear polarization analyzer. This method gives not only the amplitude ratio of mutually perpendicular electric vector components and the phase shift between them but also the proportion of unpolarized radiation.

Application of 3D-printing technologies for production of master-model in engineering industry

2021 ◽  
Vol 0 (9) ◽  
pp. 17-21
Author(s):  
O. A. Dvoryankin ◽  
◽  
N. I. Baurova ◽  
Keyword(s):  
3D Printing ◽  
Layer Thickness ◽  
Ultimate Strength ◽  
3D Models ◽  
Engineering Industry ◽  
Master Model ◽  
Parameter Influence ◽  
Printing Parameter

Analysis of 3D-printing methods used in the molding production to manufacture master-models has been carried out. The technology was selected, which allowed one to make high-precision parts, combining the molding and the 3D-printing. Factors effecting on the quality of 3D-models printed by this technology were analyzed. Experimental studied for determination of the printing parameter influence (layer thickness, filling percentage, printing velocity) on ultimate strength of specimens made of ABS-plastic were carried out.

Determination of the layered structure of baryta based heritage photographs by infrared ellipsometry

2019 ◽  
Vol 36 ◽  
pp. 174-182
Author(s):  
J.M. Flores-Camacho ◽  
A. Nieto-Villena ◽  
J.R. Martínez ◽  
J.A. de la Cruz-Mendoza ◽  
G. Ortega-Zarzosa ◽  
...  
Keyword(s):  
Layered Structure ◽  
Infrared Ellipsometry

The Influence of Diagnostic Signal Measurement Period on Blades Technical Condition Images Determined from Phase Shift Difference

2013 ◽  
Vol 199 ◽  
pp. 67-72 ◽  
Author(s):  
Rafał Grądzki
Keyword(s):  
Phase Shift ◽  
Damage Detection ◽  
Technical Condition ◽  
New Method ◽  
Diagnostic Model ◽  
Inductive Sensor ◽  
Blade Tip ◽  
Space Range ◽  
Measurement Period

In the article, new method of monitoring of rotor machine blades technical condition is presented. This method is based on diagnostic model φT12T01 [ which uses phase shift difference of signal fragments resulting from blade operation y (t) during blade recession from sensor and during approach of blade tip towards the sensor as well as signal of its environment x (t) described using proper distribution. The assumed diagnostic model also indirectly includes actual blade environment x (t) without necessity of its measurement [3,. Contactless inductive sensor constantly measures the signal of operating blade transition below the sensor. However, several difficulties with determination of last sample of blade receding from the sensor with first sample of blade approaching the sensor exist. Additionally the problem occurs with measurement of space between blades. So far, the case was solved by use 90% of this space range (in order to eliminate the overlapping of adjacent blades signals). Hence the problem of assessment of measurement period breadth on obtained models (images) of blades. The possibility of blade damage detection by analysis of less than 90% signal course was tested.

scholarly journals Cs[Tf2N]: a second polymorph with a layered structure

2018 ◽  
Vol 74 (4) ◽  
pp. 551-554
Author(s):  
Jared T. Stritzinger ◽  
Janelle E. Droessler ◽  
Brian L. Scott ◽  
George S. Goff
Keyword(s):  
Ionic Liquid ◽  
Solid State ◽  
Opposite Direction ◽  
Layered Structure ◽  
Layer Structure ◽  
Structural Determination ◽  
Polar Surface ◽  
Trifluoromethyl Groups

The structural determination of the ionic liquid, caesium bis[(trifluoromethyl)sulfonyl]imide or poly[[μ4-bis[(trifluoromethyl)sulfonyl]imido]caesium(I)], Cs[N(SO2CF3)2] or Cs[Tf2N], reveals a second polymorph that also crystallizes in a layer structure possessing monoclinic P21/c symmetry at 120 K instead of C2/c for the known polymorph [Xue et al. (2002). Solid State Sci. 4, 1535–1545]. The caesium ions in the cationic layers are coordinated by the sulfonyl groups of the bistriflimide molecules from anion layers while the trifluoromethyl groups are oriented in the opposite direction, forming a non-polar surface separating the layers. The layer direction is (100).

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