Abstract. The mark-tracking method was used in the uniaxial tensile test to determine the elastic properties of optical fibers. The mark-tracking method is based on the follow- up of two markers on the specimen with the help of an image processing technique. It allows us to determine the true strain with respect to the small strains assumption (e≤1%) or the finite strains (e>1%) without any impact of the rigid solid movement neither pulley fiber sliding on the measured strain. Optical fibers used in this study are commercial Verrillon single mode silica fibers, 125 µm in diameter with a two layers 62.5 µm thick epoxy-acrylate polymer coating. Both as-received optical fiber and stripped fiber were subjected to the uniaxial tensile test and the cantilever beam bending test. The stripped fiber Young’s modulus results under both tests were found to be very similar. Thus, the mark-tracking method is adaptable to the tensile test of optical fibers and the elastic behavior of both as-received optical fiber and stripped fiber is found to be linear. Their Young’s modulus are 22GPa and 83GPa, respectively. These results revealed that those coatings are playing a mechanical role in the fiber elongation.
The main purpose of this project master slave robot is to communicate between master and slave robot. The main objective is when master robot gives some movement and slave robot follows the movement. The other function of a master slave arm is a painting application is to paint some part that difficult to paint. For this project, we design that we can paint some other part by using arm robot and controlled by using master arm robot. Purpose of this master slave robot is to remove human from hazardous like painting. The material in painting is hazardous to human health. So this master slave robot is more useful when work that are harmful to human well being. Human can use master robot to conduct the slave robot to follow what are being commands. For this prototype, there are using 3 axis movements because depend on calculate the cost, stability, knowledge and design we take to make this project complete. Mostly, the painting application has large proportion in automotive painting works in automation industry, robotic painting application widely used to painting the mostly products like car. The development of master slave painting robot is regarded as a highly developed production technology which requires a concentration of potentials of global technologies such as CAD/CAM, robots, electronic and electrical, mechanical and IT.
The micro hardness of a substance is a key property to interpret the mechanical strength of the material which is basically related to the crystal structure and about the atomic package. It also reveals the electronic factors operating to make the stable structure. It is the resistance offered by the crystal for the movement of dislocations and for localized plastic deformation. This test affords useful details about the mechanical properties like elastic constants, yield strength etc., of materials. The variation of H v with the applied load for the
The size of these nanopillars puts them at a unique advantage to interact with biological strucutures and molecules. As cellular probes they are significantly smaller than cells, allowing them to be pressed into and through cell walls with little leakage. Figure 8.1 shows a set of pictures that show nanopillars placed on top of long, micron sized pillars. These structures were fabricated by first patterning aluminum oxide disks to mask the nanopillars, then aligning the micron sized photoresist mask to these pads of alumina. Then the micron sized pillars were etched with a cryogenic silicon etch as described in Henry et al., and finally the nanopillars were etched using the standard ‘pseudo-Bosch’ technique described in Chapter 2. The micropillars could be used as a stand-off from the electronics of a chip while the nanopillars would serve as tiny probes that could puncture the cell membrane. The figure shows an array of micron sized pillars as it was a calibration run; however simple aligned optical lithography could be used to line up a single micropillar to a single pad of nanopillars and create a single micro/nano probe instead of an array. By patterning arrays of these pillars with spacing large enough to allow contacting to individual or groups of pillars we can electronically monitor the movement or growth of cells. Such a previous test was done to measure cell traction force by directly imaging polymeric SU-8 arrays of nanowires. An example of two of their images is shown in 8.2. By knowing the strain dependent conductivity of a silicon nanopillar we can extract the deformation of the pillar in-situ and much more exactly than previously done.
In summary, numerous examples presented here demonstrate essential features that are common to propagation of hydrodynamics surface water gravity wave trains and quantum mechanical wavefunctions and electromagnetic pulses and optical beams. All these wave phenomena can be described at the linear level by the Schrödinger equation and by its extension to the nonlinear Schrödinger equation (NLSE) when nonlinear effects become prominent. For the hydrodynamic waves, these equations describe fairly accurately the evolution in space and time of the complex envelope of a narrow-banded wave train. It should be stressed that linear and nonlinear surface water-waves have been studied extensively since the groundbreaking work by Stokes in mid-ninetieth century. These studies included developments of more advanced theoretical models that overcame the limitations of the NLSE. Quantitative and qualitative experimental verification of the theoretical model equations has been carried out that established limits on the validity of their application for diverse conditions. The similarity of the governing equations suggests that some of the well known results accumulated in hydrodynamic studies may be readily applicable to other branches of physics dealing with wave propagation.
 D. Besnea, N. Băran, I. M. Călușanu, The determination of the oxigen transfer speed in water in nonstationary conditions, Proceedings of the 2nd International Conference on Mechanical Engineering, Robotics and Aerospace ICMERA, 2011, pp. 267-271;
procedure for low back pain based on according to McKenzie concept. Specially 7 directional movement techniques (EIL, FIL, EIS, FIS, FIL with Rotation, SGIS, FISS) were used for treating for low back pain. Among them most of the useable technique was extension in lying. Another study has shown McKenzie extension of spinal stabilizing exercise group attained significant improvement in a chronic low back pain. 12
When you start to learn china painting, it’s best to limit yourself to a small number of colors. Most colors may be mixed together, but there are exceptions, which you should keep in mind as you lay out your palette. For example, the gold-based colors sometimes will not mix with some of the iron-based colors. However, some particular com- binations will mix well, and gorgeous rosy reds
The guanidine tartarate crystal has been grown by slow evaporation method at room temperature. The crystalline nature of the grown crystals was confirmed by the powder XRD studies. FTIR spectral analysis confirmed the presence of functional groups in the crystals. From the UV-Visible spectrum of the Guanidine tartarate crystal shows low absorbance with cutoff 235 nm in the visible region and shows low absorbance in the entire near IR region. The optimum band gap (Eg) of the grown crystal is determined from optical absorption studies is found to be 4.07 eV. The PL spectrum shows the Green emission in the crystal. The microhardness studies confirmed that the Guaindine tartarate crystal exhibit improved mechanical behavior than and belongs to a soft material category and suggests the suitability of material in device fabrication Thus, the characterizations support the basic and complete suitability of the title compound for NLO applications.
As the film engages with the dichotomy between the mediums of painting and film, it also brings up another medium to complicate and add to the message of intermedia. In another scene featuring Tony Wilson’s artwork, as he first arrives to discover his new life as a painter, his erotic contemporary painting is in direct contact with a television screen. [Figure 13] These two distinct mediums juxtapose against one another, as depicted through the lens of the film. The way the shot is framed and panned, the inclusion of the television and painting are intentional, and allows the viewer to take in these representations. The camera stays on the television and painting for long periods as it switches back and forth between Rock Hudson’s face and his helper leaving out the door. The deliberate combination of the two mediums presented in the scene place film at the head of these three mediums, since the film is in full control. The cinematographer makes the artwork come into the foreground of the film and the narrative, by pausing to let the viewer acknowledge the painting.