High speed stress measurement technique based on photoelastic modulator (PEM) and galvano-scanner

2021 ◽  
Vol 136 ◽  
pp. 106306
Author(s):  
Fei Su ◽  
Bowen Zhang ◽  
Tenghui Li
Keyword(s):  
Measurement Technique ◽  
High Speed ◽  
Stress Measurement ◽  
Photoelastic Modulator

Ripple Technique; a Novel Non-Contact Wafer Emissivity and Temperature Method for RTP

1991 ◽  
Vol 224 ◽  
Author(s):  
C. Schietinger ◽  
B. Adams ◽  
C. Yarling
Keyword(s):  
Optical Fiber ◽  
Measurement Technique ◽  
Thermal Processing ◽  
High Speed ◽  
Rapid Thermal Processing ◽  
Wafer Surface ◽  
Speed Measurement ◽  
Temperature Method ◽  
Emissivity Measurement ◽  
Emissivity Measurements

AbstractA novel wafer temperature and emissivity measurement technique for rapid thermal processing (RTP) is presented. The ‘Ripple Technique’ takes advantage of heating lamp AC ripple as the signature of the reflected component of the radiation from the wafer surface. This application of Optical Fiber Thermometry (OFT) allows high speed measurement of wafer surface temperatures and emissivities. This ‘Ripple Technique’ is discussed in theoretical and practical terms with wafer data presented. Results of both temperature and emissivity measurements are presented for RTP conditions with bare silicon wafers and filmed wafers.

Experimental results for high-speed jitter measurement technique

2005 ◽  
Author(s):  
K. Taylor ◽  
B. Nelson ◽  
A. Chong ◽  
H. Nguyen ◽  
H. Lin ◽  
...  
Keyword(s):  
Measurement Technique ◽  
High Speed ◽  
Experimental Results ◽  
Jitter Measurement

Evaluation of the Railway Substructure in the Turnout with the Movable Frog by Help of Decomposition

2016 ◽  
Vol 827 ◽  
pp. 300-303
Author(s):  
Lubos Pazdera ◽  
Jaroslav Smutny
Keyword(s):  
Signal Analysis ◽  
High Speed ◽  
Wavelet Transformation ◽  
Stress Measurement ◽  
Discrete Wavelet ◽  
Discrete Wavelet Transformation ◽  
Railway Substructure

The aim of the paper is focused on the analysis of the stress measurement in the railway substructure in the turnout with the movable frog prototype designed for a high speed. The evaluations were compared the measurement and the results obtained with theoretical presumptions. The Discrete Wavelet Transformation for the decomposition of the stress measurement and its evaluation is described. Two sections in the turnout with the movable frog were used for the measurement and signal analysis.

Study of Pbtio2 Formation Kinetics by an In-Situ Stress Measurement Technique

1993 ◽  
Vol 310 ◽  
Author(s):  
Chen C. Li ◽  
Seshu B. Desu
Keyword(s):  
Phase Formation ◽  
Measurement Technique ◽  
Stress Measurement ◽  
In Situ Stress ◽  
Primary Objective ◽  
Film Stress ◽  
Double Layers ◽  
Formation Kinetics ◽  
In Situ Stress Measurement

AbstractThe primary objective of this study is to demonstrate an in–situ stress measurement technique for the study of formation kinetics of multicomponent thin films such as PbTiO3. Film stress–temperature and film stress–time plots have been successfully used to monitor the phase formation of PbTiO3 films in a in–situ way. It is believed that the mechanism of this reaction was dominated by grain boundary diffusion of the participating cations. The activation energy of the PbTiO3 phase formation from PbO/TiO2 double layers was estimated to be 108 kcal/mole.

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