Interference methods for measuring surface roughness

1960 ◽  
Vol 3 (2) ◽  
pp. 159-165
Author(s):  
G. Trumpold
2011 ◽  
Vol 64 (4) ◽  
pp. 706-715 ◽  
Author(s):  
Monica C.T. Bloemen ◽  
Maaike S. van Gerven ◽  
Martijn B.A. van der Wal ◽  
Pauline D.H.M. Verhaegen ◽  
Esther Middelkoop

Materials ◽  
2019 ◽  
Vol 12 (24) ◽  
pp. 4117 ◽  
Author(s):  
Marcin Stańczyk ◽  
Tomasz Figlus

Vibro-abrasive processing is the basic method for the mass finishing of parts and components in various industries. Continuous progress in the development of processing media and machine design solutions means that every research effort into vibro-abrasive processing broadens the scope of knowledge in the selection of media, parameters, and applications in various industry fields. In this paper, an attempt is made to parametrize the vibratory grinding process, which is one of the three stages of high gloss finishing. Samples of the 6082 aluminium alloy intended for use in loaded machine parts and forged car wheel rims were subject to a research analysis. The samples were processed in a rotary vibrator equipped with a sample fixing system, using resin media and auxiliary com-pounds. On the basis of the analysis, the processing capacities were determined for the selected conditions and abrasive media. The influence of time and applied processing media on the change in samples’ roughness was determined. The effects of processing were examined with the use of laser devices measuring surface roughness in the areas of 3D and 2D analysis. The analysis of the test results showed that the use of S12TZ type resin media in a 12-hour finishing process of the 6082 aluminium alloy allowed for a 75.5% reduction in surface roughness, which corresponds to approximately 6.3% per hour of processing.


1984 ◽  
Vol 17 (5) ◽  
pp. 267
Author(s):  
Optische Werke G. Rodenstock

1999 ◽  
Author(s):  
Ivan Ohlidal ◽  
Miloslav Ohlidal ◽  
Daniel Franta ◽  
Miroslav Tykal

2012 ◽  
Vol 241-244 ◽  
pp. 3030-3033
Author(s):  
Zhen Zhen Guan ◽  
Ming Hui Ye ◽  
Xiao Chun Yin ◽  
Xiao He Luo

Values of surface roughness are usually unstable with conventional measurement methods because of the affection of measurement resolution and signal sampling, in order to make the measurement results reflect the practical engineering surface accurately, a new method of measuring surface roughness based on microscopic images and fractal theory is proposed. The microscopic images are acquired and pretreated, the structure function method is used to calculate the fractal dimension and fractal proportion coefficient, experiment results show that the fractal dimensions of tested samples with same making method are equal basically, while the fractal proportion coefficients are changed with different surface roughness, the two parameters can express the surface state preferably.


2019 ◽  
Vol 12 (23) ◽  
pp. 21-29
Author(s):  
Mayada B. Al-Quzweny

In this work, results from an optical technique (laser speckle technique) for measuring surface roughness was done by using statistical properties of speckle pattern from the point of view of computer image texture analysis. Four calibration relationships were used to cover wide range of measurement with the same laser speckle technique. The first one is based on intensity contrast of the speckle, the second is based on analysis of speckle binary image,  the third is on size of speckle pattern spot, and the latest one is based on characterization of the energy feature of the gray level co-occurrence matrices for the speckle pattern. By these calibration relationships surface roughness of an object surface can be evaluated within these relations ranges from single speckle pattern image which was taken from the surface.


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