scholarly journals Average Surface Roughness Measurement Using Photometric Stereo Method

2016 ◽  
Vol 4 (3) ◽  
pp. 73-79
Author(s):  
Thammarat Somthong ◽  
Qing-Ping Yang
Keyword(s):  
Surface Roughness ◽  
Photometric Stereo ◽  
Average Surface Roughness ◽  
Roughness Measurement ◽  
Average Surface ◽  
Surface Roughness Measurement

Surface Roughness Measurement With Fiber-Optics

1983 ◽  
Vol 105 (4) ◽  
pp. 295-297 ◽  
Author(s):  
W. P. T. North ◽  
A. K. Agarwal
Keyword(s):  
Surface Roughness ◽  
Experimental Investigation ◽  
Fiber Optics ◽  
Fiber Optic ◽  
Incident Light ◽  
Average Surface Roughness ◽  
Object Surface ◽  
Roughness Measurement ◽  
Average Surface ◽  
Surface Roughness Measurement

This paper describes an experimental investigation of a technique for the measurement of surface roughness of “ground” surfaces using fiber-optics. A pair of fiber-optic bundles of similar specifications are used to carry both the incident light to and the reflected from the object surface at different angles of incidence. It has been shown that the ratio of reflected intensities is found to vary inversely as the cube of the average surface roughness.

The Influence of Scratches to Metallic Counterfaces on the Wear of Ultra-High Molecular Weight Polyethylene

1995 ◽  
Vol 209 (4) ◽  
pp. 263-264 ◽  
Author(s):  
J Fisher ◽  
P Firkins ◽  
E A Reeves ◽  
J L Hailey ◽  
G H Isaac
Keyword(s):  
Molecular Weight ◽  
High Molecular Weight ◽  
Average Surface Roughness ◽  
Reciprocating Motion ◽  
Roughness Measurement ◽  
Average Surface ◽  
Surface Roughness Measurement ◽  
Metallic Particles ◽  
Steel Surfaces ◽  
Ultra High Molecular Weight

A number of studies of explanted metallic femoral heads have shown scratches or damage caused by bone cement, bone or metallic particles. This damage has been cited as a cause of increased wear of ultra-high molecular weight polyethylene (UHMWPE) acetabular cups. In this laboratory study, small scratches 2 μm deep were made on smooth stainless steel surfaces at a spacing of 10 mm. These individual scratches were found to increase the wear rate of UHMWPE by a factor of 30 in unidirectional sliding and a factor of 70 in reciprocating motion. It is of particular concern that a single small scratch, which is not detected by the average surface roughness measurement Ra can cause such a dramatic increase in the wear of ultra-high molecular weight polyethylene.

Surface Roughness Measurement of Thermal Barrier Coating using Terahertz Waves

2017 ◽  
Vol 137 (3) ◽  
pp. 147-152 ◽  
Author(s):  
Tetsuo Fukuchi ◽  
Norikazu Fuse ◽  
Mitsutoshi Okada ◽  
Tomoharu Fujii ◽  
Maya Mizuno ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Thermal Barrier Coating ◽  
Thermal Barrier ◽  
Roughness Measurement ◽  
Terahertz Waves ◽  
Surface Roughness Measurement ◽  
Barrier Coating

scholarly journals Ultrasonic dispersion method used in glass polishing experiment

2021 ◽  
Vol 13 (4) ◽  
pp. 168781402110118
Author(s):  
Zenan Chu ◽  
Tao Wang ◽  
Qiang He ◽  
Kai Zhao
Keyword(s):  
Surface Roughness ◽  
Rare Earth ◽  
Surface Morphology ◽  
Ultrasonic Method ◽  
Average Surface Roughness ◽  
Polishing Process ◽  
Ultrasonic Dispersion ◽  
Processing Efficiency ◽  
Average Surface ◽  
Evaluation Indexes

To solve the problems of low processing efficiency and poor glass surface quality when using rare earth polishing powder to grind super-hard K9 glass. The potential, phase structure, surface morphology, and particle size distribution of the nano-rare earth polishing powder were characterized. Compare the evaluation indexes such as polishing efficiency, surface morphology, and contact angle after the polishing process is changed. The results of the comparative study show that the average surface roughness of the glass after heating ultrasonic polishing process is 0.9064 nm, the polishing rate reaches 0.748 μm/min, the average surface roughness of the glass without heating ultrasonic polishing process is 1.3175 nm, and the polishing rate reaches 0.586 μm/min, the ultrasonic assisted polishing process is superior to the conventional polishing process. The heating ultrasonic method provides experimental basis for precise and rapid processing.

Digital Object Memory Integration into Indirect Surface Roughness Measurement in Turning

2013 ◽  
Vol 465-466 ◽  
pp. 764-768 ◽  
Author(s):  
Tanel Aruväli ◽  
Tauno Otto
Keyword(s):  
Surface Roughness ◽  
Tool Wear ◽  
Digital Object ◽  
Roughness Measurement ◽  
Object Memory ◽  
Surface Roughness Measurement ◽  
Memory Integration ◽  
Evaluation Time ◽  
Roughness Evaluation ◽  
Influencing Parameters

The paper investigates in-process signal usage in turning for indirect surface roughness measurement. Based on theoretical surface roughness value and in-process signal, a model is proposed for surface roughness evaluation. Time surface roughness and in-process signal surface roughness correlation based analysis is performed to characterize tool wear component behavior among others. Influencing parameters are grouped based on their behavior in time. Moreover, Digital Object Memory based solution and algorithm is proposed to automate indirect surface roughness measurement process.

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