Dominik Wojtkowiak

Perforacja pasów do transportu podciśnieniowego - metody, materiały oraz problemy

The analysis of suitable perforation methods for polymer composites belts with regard to modern material trends in manufacturing the conveyor and timing belts for the vacuum transport was presented. Authors also discussed problems, which occurs during belt perforation and specified the research area, which will help to develop the production process of perforated belts.

Concept of the hexa-quad bimorph walking robot and the design of its prototype

Abstract Present-day walking robots can increasingly successfully execute locomotive as well as manipulative functions, which leads to their expansion into more and more applications. This article presents the design of a hexa-quad bimorph walking robot with the ability to move at a relatively high speed in difficult terrain. It also has manipulation capabilities both at a standstill and in motion. This feature of the robot is made possible by the ability to easily change the configuration from six-legged to four-legged by elevating the front segment of its body. Presented prototype will be used in further research to develop the hexa-quad bimorph walking robot.

Method of programming the nitinol springs in the space of the kiln chamber

This paper shows a method of programming the NiTinol springs by heating them up in the furnace chamber filled with technical nitrogen. A fully specified methodology, which consists of preparing the spring forms, the numerical analysis of the heating time and the description of the heating process are presented in this article. The effectiveness of the following method is confirmed using research of shape retention after a series of duty cycles performed by an activated NiTinol spring.

Dry Ice Compaction in Piston Extrusion Process

Abstract The article presents the results of research on the effect of extrusion tube geometry on the axial force being the key parameter of the dry ice piston extrusion process. The tests were carried out with the experimental set-up based on a cylindrical extrusion tube used alone and supplemented with reducer (orifice). The focus of the experiments was to determine the effect of compression tube reducer on the value of the force of resistance FOP in the dry ice compression process. Its value can subsequently be used as the basis for establishing guidelines for designing and building machines for compression and pelletizing of dry ice.