Interference methods for measuring surface roughness

1960 ◽  
Vol 3 (2) ◽  
pp. 159-165
Author(s):  
G. Trumpold
Keyword(s):  
Surface Roughness ◽  
Measuring Surface

An objective device for measuring surface roughness of skin and scars

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
Keyword(s):  
Surface Roughness ◽  
Measuring Surface

scholarly journals The Effect of Selected Parameters of Vibro-Abrasive Processing on the Surface Quality of Products Made of 6082 Aluminium Alloy

Materials ◽  
2019 ◽  
Vol 12 (24) ◽  
pp. 4117 ◽  
Author(s):  
Marcin Stańczyk ◽  
Tomasz Figlus
Keyword(s):  
Surface Roughness ◽  
Aluminium Alloy ◽  
Research Effort ◽  
Mass Finishing ◽  
Measuring Surface ◽  
Finishing Process ◽  
Continuous Progress ◽  
Quality Of Products ◽  
Laser Devices

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.

Measuring surface roughness with optics

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

Comparison of optical and nonoptical methods for measuring surface roughness

1999 ◽  
Author(s):  
Ivan Ohlidal ◽  
Miloslav Ohlidal ◽  
Daniel Franta ◽  
Miroslav Tykal
Keyword(s):  
Surface Roughness ◽  
Measuring Surface

Recognition of Surface Roughness Based on Fractal Theory and the Microscopic Images

2012 ◽  
Vol 241-244 ◽  
pp. 3030-3033
Author(s):  
Zhen Zhen Guan ◽  
Ming Hui Ye ◽  
Xiao Chun Yin ◽  
Xiao He Luo
Keyword(s):  
Surface Roughness ◽  
Fractal Theory ◽  
Fractal Dimensions ◽  
Measurement Methods ◽  
Microscopic Images ◽  
Measuring Surface ◽  
Measurement Resolution ◽  
Measurement Results ◽  
Practical Engineering ◽  
Two Parameters

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.

scholarly journals Different methods for characterizing surface roughness using laser speckle technique

2019 ◽  
Vol 12 (23) ◽  
pp. 21-29
Author(s):  
Mayada B. Al-Quzweny
Keyword(s):  
Surface Roughness ◽  
Speckle Pattern ◽  
Point Of View ◽  
Laser Speckle ◽  
Image Texture ◽  
Object Surface ◽  
Image Texture Analysis ◽  
Measuring Surface ◽  
Wide Range

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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