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A proper seating is important as an aid for cerebral palsy patients, and has good influence on patients' physical conditions and mentalities. Deformity of spine causes gaps between their backs and backrests of wheel chairs. Generally, urethane cushions are used to fill up the gaps. However, this method cannot handle their dynamic motion that will happen in daily life. In the previous study, we developed...
A Terahertz planar periodic structure (engineered material), which shows several sharp Fano resonances, is introduce. These resonances are due to the small asymmetries of the structure which allow excitation of trapped modes. These sharp resonances can be used for biomedical sensing applications. HFSS simulation results are presented.
This paper deals with miniaturization of wearable electro-textile antennas by the use of Minkowski fractal geometries. Two electro-textile materials namely Flectron and Zelt are considered for the design of flexible microstrip antennas. In both cases, polyester fabric material has been employed as dielectric medium. In the basic design both the antennas are designed for WLAN applications. The Flectron...
A single few-layer graphene (FLG) sheet is synthesized on a tungsten tip by using microwave plasma enhanced chemical vapor deposition method. The sheet density of FLG on a tungsten tip is controlled by the substrate surface structure and local plasma density. This method provides a new way to fabricate a field emission point electron source.
Laser Metal Deposition (LMD) is an additive manufacturing process whose dynamics are driven by complex heat transfer and fluid flow phenomena. The LMD process, along with every additive manufacturing process, is fundamentally a two-dimensional process possessing both temporal (or spatial) domain dynamics and propagation of information from layer to layer. However, modeling the two-dimensionality of...
The analytical solution of a plane problem for a bimaterial plane with a crack in the shape of the circular arc located near an interface is obtained. On the crack edges external load is applied. At infinity stresses and angles of rotation are given. Method of complex potentials of Kolosov — Muskhelishvili together with a superposition method is used for solving the problem. The boundary problem is...
Multi-Material Rapid Prototyping (MM-RP) is a promising fabrication process for compliant mechanisms, for instance when compactness is a concern. The Pseudo-Rigid Body Model (PRBM) approach is well-known for the synthesis of compliant mechanisms. It is usually based on the use of compliant joints to provide the mechanism mobilities. In this paper, we propose the HSC joint as a new type of revolute...
The Chinese genebank contains 6169 wild soybean (Glycine soja) accessions collected from 25 provinces. In this study, leaf shape and a suite of other morphological characteristics were analyzed in order to examine the relationship between leaf shape and other characteristics of wild soybeans. The accessions were classified into the following six groups based on leaf shape: accessions with round leaves,...
This paper discusses tendon friction effects regarding guiding and material selection. In order to extract valuable information for designers of tendon driven systems, several experiments are conducted to investigate e. g. the intrinsic friction or sliding effect. The results are used to build an experimental friction model and to derive a set of guidelines. The mechanical designer can use the proposed...
This paper resumes the frictionless fan concept which was introduced at itherm 2012 [1]. This concept was based on a flexible polymer blade, the vibration of which is, as opposite to the piezoelectric driven fan principle, driven by means of a magnetic field. This type of fan can be of interest in regions where otherwise the fluid flow would be stagnant.
Amputees at the Springfield YMCA and other YMCAs in the greater Springfield area want a prosthesis that would improve their swimming skills and mimic healthy body swimming mechanics. This way they can swim a lot better than they normally do with the prosthesis that they use for swimming now. Design Requirements include that the prosthesis should be able to do a breast stroke and the butterfly because...
A nerve block training phantom is being developed for use with ultrasound systems in low-resource environments. Two design options are being pursued: make-as-needed and temporally stable. The make-as-needed design is intended for production within the low-resource environment using locally available materials. The temporally stable design will be produced in the United States and transported to the...
This paper, aiming to decrease the amount of the transformation caused by the machining of the turbine blades material made of shape forging, investigates the optimal machining method for them. Accordingly, through merely the experiment that used the rectangular test pieces made of the rolled steel with the same chemical composition as the actual blades had been performed, we obtained the findings...
Active and passive vibration control of dynamic systems using Shape Memory Alloys (SMAs) have received significant attraction because of its effectiveness in wide range of applications including aerospace, automobile and biomedical domain. A vibration isolation system comprising four bar linkage mechanism along with SMA wire is proposed in the present work for space related applications. Two different...
Low Earth Orbit (LEO) is becoming increasingly populated by orbital debris of all sizes and shapes that is hazardous to operational spacecraft. NASA has recently determined that a collision with debris between 0.5 mm and a few centimeters would be “mission ending”. Recently, a novel technique to remediate small debris (less than 10 cm) from Low Earth Orbit (600 – 1100 km) has been proposed that uses...
With accelerating progress in the field of machining, use of newer and harder materials like titanium, stainless steel, high-strength temperature-resistant (HSTR) alloys and ceramics has become common and has resulted in a number of available Non-traditional machining (NTM) processes. With increased number of available options, the need arises to select the most efficient NTM process for machining...
In this paper we present a short-term robot edutainment for junior high school students. The theme of this robotic course is the walking motion of multi-legged robot. We provided the students with the robot educational material that contains assembled leg parts. The students devised the configuration and motion of the robot using given constraints. We conducted a robot contest for the students to...
High flexibility and high speed is the goal for industrial manufacturing using robots. However, it is difficult to put them together due to the fact that they are contradicting with each other. To solve this problem, a new high reconfigurable gripper is proposed for robotic manipulator to improve its flexibility, so that the robot can accomplish an assembly task with shorter time. In this paper, the...
We describe an experimental mass customization based manufacturing system which relies on a sophisticated IT infrastructure and CAE to produce novel wooden design products in a lean and flexible way. The main focus of this paper is on the IT infrastructure where several AI techniques for machine vision, search and planning are applied. The IT system has a service oriented architecture and is composed...
This paper describes the development of an endoscopic device that veers out a latex tube with jamming by granular materials. Colorectal cancer can be cured completely if it is discovered and treated early with a large intestine endoscope. A conventional endoscope can screen and heal the inside of the intestine, but such surgery is difficult for doctors, and it can take 300 or more training sessions...
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