This paper is focused on the study and the control of a deposition process of robotic arc welding. The process consists of a SMD (Shaped Metal Deposition) system, that is a novel rapid prototyping tungsten inert gas (TIG) welding technique leading to near-net-shape, using a layer by layer deposition technique. An experimental setup has been properly implemented in order to study the system and ...

For the successful root canal treatment, thorough cleaning and shaping of the root canal system is a necessary procedure. C-shaped canals are known to have a complex canal anatomy with numerous fins connecting individual canals, thus require supplementary effort to accomplish a successful root canal treatment. Generally, anthropologic differences in tooth shape is not an important issue in the ...

SUMMARY We devised the Ω-shaped incision as a technique for skin tumor resection on the areas of skin with an arc-shaped fold. With this technique, the dog-ear that is formed during 6 wound closure can be resected within the range of the first skin incision. We report this technique after performing it on the face or trunk of 18 patients and confirmed its usefulness.

Arc sensors have been used in seam tracking and widely studied since the 80s and commercial arc sensing products for T and V shaped grooves have been developed. However, it is difficult to use these arc sensors in narrow gap welding because the arc stability and sensing accuracy are not satisfactory. Pulse gas melting arc welding (P-GMAW) has been successfully applied in narrow gap welding and ...

Successes of endodontic treatment depend on cleaning and shaping of root canal and adequately obturate the prepared root canal space. 1-3 Obturation has historically been achieved with gutta percha and a sealer. The root canal system has many variations in anatomy such as irregularly shaped canals, lateral and accessory canals, anastomoses between canals and a variety of fins. All this leads to...

This article took the trevally crescent-shaped caudal fin mode fishes as bionic object, based on the biological observation and bionic research, established the fish swimming model of trevally crescentshaped caudal fin mode, and designed the three degrees of freedom, tailtail fins pectoral fin, robotic fish. It detailed focuses on the fish propulsion theory and robotic fish overall design, incl...