Bigger Influence by Smaller Particles in Tactile-Visual Cross-Modal Roughness Perception of Fine Surface

This study investigated the relationship between median frequency levels and roughness perception for jittered stimuli. Five median frequency levels were combined with four jitter excursions to form stimuli which were submitted to 32 listeners, who judged roughness by paired comparisons, rating scale, and magnitude estimation techniques. The results showed the same trends in each of the procedures. Stimuli of lower median frequency were judged to be rougher than those of higher median frequency, for all jitter conditions. The conclusion is that the median frequency levels of jittered wavetrains do affect the perception of roughness in analog stimuli. Whether the same relationship holds for human rough voices must be experimentally verified.

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Physical-Mechanical Properties of Paving Block from Plastic Shopping Bags Waste and Sand

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.849.61 ◽

2020 ◽

Vol 849 ◽

pp. 61-66

Author(s):

Iswahyuni ◽

Indri Hermiyati ◽

Suharyanto ◽

Uma Fadzilia Arifin ◽

Dewi Nur Hidayati

Keyword(s):

Mechanical Properties ◽

Compressive Strength ◽

Water Absorption ◽

Economic Value ◽

Plastic Waste ◽

Alternative Solution ◽

Friction Resistance ◽

Plastic Bags ◽

Fine Surface

Plastic shopping bags are easy to obtain for free or at low prices, hence contribute as the highest quantity among plastic waste. The plastic shopping bags waste has no economic value. Usually they are just thrown away. An alternative solution is by utilizing them to produce paving block by mixing with sands. The objective of this experiment is to evaluate the best ratio composition of plastic shopping bags waste and sand, followed by evaluation of the physical-mechanical properties of this particular paving block. Several different mixture ratios of weights of plastic shopping bag and sand were evaluated to obtain the best physical-mechanical properties of the paving block. The mixture ratios of weight of plastic shopping bags waste and sand were 1:1, 1:2, 1:3, 1:4 and 1:5, respectively. The shopping plastic bags waste was melted before mixed with sand. The different mixture ratios were mixed with same pressure. The paving block mixture with ratio of 1:4 exhibited the best physical-mechanical properties as revealed by no defect, no crack and fine surface. The compressive strength of 17.4 MPa, friction resistance of 0.138 mm/sec and water absorption of 2.518% can be achieved, which is suitable for parking area construction.

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Surface Defects in Drawn Aluminum Magnet Wire

Journal of Lubrication Technology ◽

10.1115/1.3452519 ◽

1975 ◽

Vol 97 (1) ◽

pp. 134-141 ◽

Cited By ~ 8

Author(s):

R. N. Wright ◽

A. T. Male

Keyword(s):

Defect Structure ◽

Surface Characterization ◽

Surface Defect ◽

Potential Role ◽

Surface Defects ◽

Repair Process ◽

Fine Surface ◽

Magnet Wire ◽

Characterization Studies

The fine surface defect structure of commercial EC grade aluminum magnet wire has been characterized and four basic component types have been identified. A grading system has been established for each of the component defects. Intermediate process surface characterization studies and laboratory drawing experiments have been performed to clarify the origin of the defects. The potential role of drawing lubrication in repairing or compounding the defect structure has been demonstrated and the mechanics of a drawing related repair process have been clarified through study of the effects of rod drawing on hardness indentations.

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Roughness Perception of Micro-particulate Plate: A Study on Two-Size-Mixed Stimuli

Haptics: Neuroscience, Devices, Modeling, and Applications - Lecture Notes in Computer Science ◽

10.1007/978-3-662-44193-0_56 ◽

2014 ◽

pp. 446-452 ◽

Cited By ~ 5

Author(s):

Hiroki Tsuboi ◽

Makoto Inoue ◽

Scinob Kuroki ◽

Hiromi Mochiyama ◽

Junji Watanabe

Keyword(s):

Roughness Perception

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Ultra-fine surface solid-state electrolytes for long cycle life all-solid-state lithium–air batteries

Journal of Materials Chemistry A ◽

10.1039/c8ta08095j ◽

2018 ◽

Vol 6 (43) ◽

pp. 21248-21254 ◽

Cited By ~ 23

Author(s):

Sheng Wang ◽

Jue Wang ◽

Jingjing Liu ◽

Hucheng Song ◽

Yijie Liu ◽

...

Keyword(s):

Solid State ◽

Energy Density ◽

High Energy ◽

Cycle Life ◽

High Energy Density ◽

Safety Issues ◽

Long Cycle Life ◽

Fine Surface ◽

Solid State Electrolytes ◽

Lithium Air Batteries

Solid-state electrolytes (SSEs) are potential candidates for developing high-energy-density and safe all-solid-state lithium (Li)-metal batteries due to the elimination of most of the safety issues encountered with liquid electrolytes.

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A New Stitching Method for Dark-Field Surface Defects Inspection Based on Simplified Target-Tracking and Path Correction

Sensors ◽

10.3390/s20020448 ◽

2020 ◽

Vol 20 (2) ◽

pp. 448

Author(s):

Chen ◽

Li ◽

Sui

Keyword(s):

Target Tracking ◽

Surface Defects ◽

Imaging System ◽

Dark Field ◽

Dark Field Imaging ◽

Fine Surface ◽

Camera Perspective ◽

Scanning Path ◽

Field Imaging ◽

Small Field Of View

A camera-based dark-field imaging system can effectively detect defects of microns on large optics by scanning and stitching sub-apertures with a small field of view. However, conventional stitching methods encounter problems of mismatches and location deviations, since few defects exist on the tested fine surface. In this paper, a highly efficient stitching method is proposed, based on a simplified target-tracking and adaptive scanning path correction. By increasing the number of sub-apertures and switching to camera perspective, the defects can be regarded as moving targets. A target-tracking procedure is firstly performed to obtain the marked targets. Then, the scanning path is corrected by minimizing the sum of deviations. The final stitching results are updated by re-using the target-tracking method. An experiment was carried out on an inspection of our specially designed testing sample. Subsequently, 118 defects were identified out of 120 truly existing defects, without stitching mismatches. The experiment results show that this method can help to reduce mismatches and location deviations of defects, and it was also effective in increasing the detectability for weak defects.

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