TITLE

Study on the double pulse laser dynamic electronic speckle measurement based on FPGA

AUTHOR(S)
Fusheng Yu; Tengfei Li; Yanchao Wu; Zhongguo Sun; Shengjiang Yin
PUB. DATE
April 2014
SOURCE
Advanced Materials Research;2014, Issue 900, p617
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Speckle pattern interferometry can be used to measure he displacement, strain and vibration, surface deformation and surface roughness. And dynamic laser speckle measurement with high accuracy has been widely used in measurement of surface deformation. Tool breakage is the main bottleneck of high-speed intermittent cutting development, therefore, obtaining stress distribution of milling tools is a base of improving the tool design and tool life. Using a speckle measurement method of double pulsed digital based on FPGA, which involves the laser cutter, tools and CCD, transforms the high-speed dynamic measurement to quasi-static measurement. As a result, we can get two speckle images of front and back milling cutter surface and calculate the deformation, strain and stress distribution of the tool surface with analysis.
ACCESSION #
94739390

 

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