Determination of residual stresses by means of a digital speckle pattern interferometry and local heating combined technique

2004 ◽  
Author(s):  
Matias R. Viotti ◽  
Guillermo H. Kaufmann ◽  
E. A. Fancello ◽  
A. Gaston ◽  
O. Moeller
Keyword(s):  
Residual Stresses ◽  
Speckle Pattern ◽  
Local Heating ◽  
Digital Speckle Pattern Interferometry ◽  
Digital Speckle ◽  
Combined Technique

scholarly journals Precise Detection of Wrist Pulse Using Digital Speckle Pattern Interferometry

2018 ◽  
Vol 2018 ◽  
pp. 1-7 ◽  
Author(s):  
Hengfei Zhang ◽  
Sijin Wu ◽  
Weixian Li ◽  
Yonghong Wang ◽  
Mingli Dong ◽  
...  
Keyword(s):  
Speckle Pattern ◽  
Precise Determination ◽  
Diagnostic Methods ◽  
Digital Speckle Pattern Interferometry ◽  
Efficient Detection ◽  
Comprehensive Information ◽  
Arterial Pulsation ◽  
Length Width ◽  
Digital Speckle

Pulse diagnosis is one of the four diagnostic methods of traditional Chinese medicine. However it suffers from the lack of objective and efficient detection method. We propose a noncontact optical method to detect human wrist pulse, aiming at the precise determination of the temporal and spatial distributions of pulse. The method uses the spatial-carrier digital speckle pattern interferometry (DSPI) to measure the micro/nanoscale skin displacement dynamically. Significant improvements in DSPI measurement have been made to allow the DSPI to detect the comprehensive information of the arterial pulsation at locations of Cun, Guan, and Chi. The experimental results prove that the spatiotemporal distributions of pulse can be obtained by the proposed method. The obtained data can be further used to describe most of the pulse parameters such as rate, rhythm, depth, length, width, and contour.

scholarly journals Determination of the zero-order fringe position in digital speckle pattern interferometry

1997 ◽  
Vol 36 (10) ◽  
pp. 2066 ◽  
Author(s):  
Rodrigo Henao ◽  
Héctor Rabal ◽  
Alberto Tagliaferri ◽  
Roberto Torroba
Keyword(s):  
Speckle Pattern ◽  
Zero Order ◽  
Digital Speckle Pattern Interferometry ◽  
Digital Speckle
Sign in / Sign up

Export Citation Format

Share Document