scholarly journals Single SLM full-color holographic three-dimensional video display based on image and frequency-shift multiplexing

2019 ◽  
Vol 27 (11) ◽  
pp. 15926 ◽  
Author(s):  
Shu-Feng Lin ◽  
Hong-Kun Cao ◽  
Eun-Soo Kim
Keyword(s):  
Frequency Shift ◽  
Three Dimensional ◽  
Video Display ◽  
Full Color

Spin-Switched Three-Dimensional Full-Color Scenes Based on a Dielectric Meta-hologram

ACS Photonics ◽  
2019 ◽  
Vol 6 (11) ◽  
pp. 2910-2916 ◽  
Author(s):  
Hang Feng ◽  
Qitong Li ◽  
Weiping Wan ◽  
Jung-Hwan Song ◽  
Qihuang Gong ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Full Color

Frequency Shift in Drilling due to Margin Engagement

2005 ◽  
Vol 127 (2) ◽  
pp. 271-276 ◽  
Author(s):  
D. N. Dilley ◽  
D. A. Stephenson ◽  
P. V. Bayly ◽  
A. J. Schaut
Keyword(s):  
Frequency Shift ◽  
Three Dimensional ◽  
Hole Drilling ◽  
Frequency Increase ◽  
Element Analysis ◽  
Pilot Hole ◽  
Frequency Matching ◽  
The Past ◽  
Chatter Prediction ◽  
Embedded Model

Drill chatter degrades hole roundness, hole size, and tool life. This wastes time and money in tools, scrap, and hole rework. Chatter prediction in milling and turning has shown significant benefit to industry; however, researchers have been unable to accurately predict chatter in drilling applications. In the past, the drill, including the chisel edge, was modeled as either a fixed-fixed or fixed-pinned beam (Tekinalp, O., and Ulsoy, A. G., 1989, “Modeling and Finite Element Analysis of Drill Bit Vibrations,” ASME J. Eng. Indust. 111, pp. 148–154), but more recent research (Dilley, D. N., Bayly, P. V., and Schaut, A. J., 2005, “Effects of the Chisel Edge on the Chatter Frequency in Drilling,” J. Sound Vib., 281, pp. 423–428) has shown that a fixed-embedded model using springs improves frequency matching. The effects of the drill margins on dynamics have not been studied. The fixed-fixed or fixed-pinned model will be shown to be inappropriate for modeling the effects of margin engagement, while the spring-end boundary condition can better approximate the frequency increase observed experimentally as the drill margins engage deeper into the hole. In addition, the shifted frequency is well below the frequency found from an analytical fixed-fixed or fixed-pinned beam. Evidence that the margins cause the frequency shift is seen in three-dimensional waterfall plots that show this shift for pilot hole drilling (in which the margins are engaged), but not for tube drilling (in which margins are not engaged).

Real-Time Dynamic Holographic Three-Dimensional Video Display Based on a Super Fast Response Liquid Crystal Thin Film

2014 ◽  
Vol 41 (2) ◽  
pp. 0209013
Author(s):  
高洪跃 Gao Hongyue ◽  
于瀛洁 Yu Yingjie ◽  
郑华东 Zheng Huadong
Keyword(s):  
Thin Film ◽  
Liquid Crystal ◽  
Real Time ◽  
Three Dimensional ◽  
Fast Response ◽  
Video Display ◽  
Time Dynamic

Three dimensional light manipulation for full-color nano-projector

2014 ◽  
Author(s):  
Mu Ku Chen ◽  
Chia Min Chang ◽  
Ming Lun Tseng ◽  
Cheng Hung Chu ◽  
You Zhe Ho ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Light Manipulation ◽  
Full Color

scholarly journals Digital color management in full-color holographic three-dimensional printer

2012 ◽  
Vol 51 (19) ◽  
pp. 4343 ◽  
Author(s):  
Fei Yang ◽  
Yuri Murakami ◽  
Masahiro Yamaguchi
Keyword(s):  
Three Dimensional ◽  
Color Management ◽  
Full Color

scholarly journals Impact of postural variation on hand measurements: Three-dimensional anatomical analysis

PLoS ONE ◽  
2021 ◽  
Vol 16 (4) ◽  
pp. e0250428
Author(s):  
Mei-ying Kwan ◽  
Kit-lun Yick ◽  
Lung Chow ◽  
Annie Yu ◽  
Sun-pui Ng ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Dorsal Side ◽  
Pattern Design ◽  
Skin Deformation ◽  
Finger Length ◽  
Hand Functions ◽  
Full Color ◽  
Web Space ◽  
The Impact ◽  
The Web

In this article, the impact of postural variations on hand anthropometry and distribution of skin strain ratios has been investigated. The literature suggests the glove fit directly affects hand functions. However, gloves currently manufactured based on a static posture failed to provide optimum fit. Workers often do not wear protective gloves due to discomfort caused by improper design, which increases the risk of hand injury. Full-color three-dimensional scans of the hands are captured with thirty healthy subjects (20 females, 10 males) to analyze the hand measurements and skin deformation with various postures. 42 of the 57 hand dimensions were found to have significant differences (p >0.05) related to hand posture. The skin strain ratios further suggest that the slant of the web space, dorsal-length and surface area should be increased, while the angles of the web space and length of the palm reduced to advance glove patterns. This research contributes to constructing gloves with optimum fit, performance, and comfort. Results show that in consideration of hand postures, the angle of the slant of web space between digits 2 and 5 and the finger length on the dorsal side should be increased, whilst the finger length on the palm side should be reduced in glove pattern design. Gloves currently constructed based on a splayed posture cannot provide a good fit. Consideration should be given to hand measurements in dynamic postures.

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