Triwavelength simultaneous ESPI for 3D micro-deformation fields measurement

2021 ◽  
Author(s):  
Hanyang Jiang ◽  
Fujun Yang ◽  
xiangjun dai ◽  
Xiaoyuan He ◽  
Guangjian Peng
Keyword(s):  
Micro Deformation

Ultraprecision Ductile-Regime Cutting of Brittle Materials

2007 ◽  
Vol 339 ◽  
pp. 395-399 ◽  
Author(s):  
Ming Zhou ◽  
X.D. Liu ◽  
S.N. Huang
Keyword(s):  
Ultrasonic Vibration ◽  
Soda Lime ◽  
Depth Of Cut ◽  
Soda Lime Glass ◽  
Diamond Cutting ◽  
Vibration Cutting ◽  
Ductile Regime Machining ◽  
Critical Depth Of Cut ◽  
Micro Deformation ◽  
Micro Indentation

Soda-lime glass is a typical brittle material, which is difficult to realize ductile-regime machining by using conventional cutting technology due to the extremely small critical depth of cut. In this work, the micro-deformation characteristics of this kind of materials were analyzed by micro indentation. Ultrasonic vibration assisted diamond cutting was performed in order to investigate the effect of tool vibration on material removal process and surface quality. The profiles of cut surfaces were measured and compared with those obtained by conventional diamond cutting. Real depths of cut in ultrasonic vibration cutting correspond well with the nominal ones. The change in the tribology of the cutting process as well as the alteration of the deformation mechanism of the work material might be responsible for the reduction in tool wear in vibration cutting.

Micro-Deformation Mechanism of Granular Materials under Different Boundary Conditions Based on DEM Simulation

2012 ◽  
Vol 170-173 ◽  
pp. 3361-3366
Author(s):  
Zhao Xia Tong ◽  
Min Zhou ◽  
Yang Ping Yao
Keyword(s):  
Boundary Condition ◽  
Granular Materials ◽  
Biaxial Compression ◽  
Special Focus ◽  
Particle Rotation ◽  
Axis Orientation ◽  
Dem Simulation ◽  
Steel Bars ◽  
Strain Relationship ◽  
Micro Deformation

Series of biaxial compression simulations are carried out to investigate the effects of boundary condition on the deformation of granular materials by using DEM. The parameters used in DEM are validated by the biaxial compression experiments on elliptical steel bars. The effects of boundary condition on the stress-strain relationship are analyzed. And special focus are put in the analysis of particle displacement, particle rotation, void distribution, particle long axis orientation and contact force with the development of deformation.

Temperature sensor and display researched based on micro-deformation of beam splitting mirror in holographic system

2015 ◽  
Author(s):  
Delong Yang ◽  
Xiuyan Chen ◽  
Peng Gao ◽  
Ji Yu ◽  
Xue Sun ◽  
...  
Keyword(s):  
Temperature Sensor ◽  
Beam Splitting ◽  
Micro Deformation

Quantitative Measurement of Micro-Deformation of Electropolished Carbon Steel Using an Image Processing Technique

2003 ◽  
Vol 17 (08n09) ◽  
pp. 1691-1696
Author(s):  
Takayuki Fukuda ◽  
Hironobu Nisitani ◽  
Kikuhito Kawasue
Keyword(s):  
Image Processing ◽  
Quantitative Measurement ◽  
Surface Deformation ◽  
Great Influence ◽  
Processing Technique ◽  
Carbon Steels ◽  
Image Processing Technique ◽  
Banded Structure ◽  
Static Tensile ◽  
Micro Deformation

An automatic technique for the quantitative measurement of micro-surface deformation of a specimen using image-processing is introduced. Static tensile and torsional tests of two kinds of electropolished carbon steels are carried out. One has a banded structure and another has not. The banded structure gives a great influence on the micro-deformation depending on the type of loads. The characteristics of micro-deformations under these static loads are made clear from the results obtained by the image-processing technique.

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