UNIVERSAL MEASURING MODULE BASED ON A THREE-COMPONENT FERROSONDE SENSOR AND A MAGNETIZATION STATION BASED ON ITS BASIS

The work is devoted to the description of the design of the measuring module (fluxgate magnetic compass) and the magnetovariation station (geophysical device) created on its basis. This station is designed to carry out geomagnetic work in various conditions - both stationary observation points and for work in the field.

ESTIMATION OF ERRORS OF MEASUREMENT METHODS ON A UNIVERSAL MEASURING MICROSCOPE

The article presents the results of evaluating the errors of measurement methods on a universal measuring microscope, determines the causes of their occurrence and their impact on the measurement result, and also provides a comparative analysis of the resulting errors in comparison with other measuring microscopes.

Practical Aspects of Roundness Measurements with the use of Coordinate Measuring Machines Equipped with Scanning Probe Heads

One of the most universal measuring techniques in contemporary industry is a coordinate measuring technique. This paper focuses on a problem of measurements of form deviations with the use of coordinate measuring machines (CMMs). Nowadays, such measurements are usually carried out using a scanning probe-heads. The paper discusses the problem of measurements of roundness deviations by a scanning probe-head. Authors conducted an experiment aiming at the study of the influence of the number of probing points and the scanning speed on parameters of roundness error. The results were compared to the reference values obtained from the radius change instrument for highly accurate roundness and cylindricity measurements. The paper presents the introduction to the problem, the methodology of the study, the results of the experiment, discussion and final conclusions including the plan of further research.

Space­time coordinates of society: accessible and inaccessible time

The article is devoted to the analysis of prospects for a sociological study of the space­time coordinates of society. The philosophical interpretation of the categories “time” and “space” are considered in the framework of German ide- alism. The transition of I. Kant’s transcendental ideas to sociology is represented. The origin of the concepts of social space and social time is considered in the framework of the research program of E. Durkheim. Attention is focused on the study of social time in the works of P. Sorokin, R. Merton, P. Shtompka, E. Zerubavel. The dichotomy of astronomical and social time is considered as a point of problematization in sociological research. This dichotomy seems to be insufficiently correct, because the astronomical concept of time does not reflect “objective time”, but acts as a generally accepted scale, according to which people correlate their actions. In order to avoid terminological inaccuracy, it is proposed to distinguish the following categories: “time” as a meta­phenomenon that permeates all spheres of reality; “time scale” as a universal measuring con- struct; “temporary regularity” as the rhythm of events. The productivity of using the category “temporality” in the analysis of social phenomena is justified in the article.

Investigation of discontinuous periodic signals using the measuring labview complex

General approaches to the analysis of the Gibbs phenomenon for discontinuous periodic signals approximated by the truncated Fourier series are considered. Methods for smoothing the truncated Fourier series and improving its convergence are discussed. The software means for modeling is a universal measuring complex LabVIEW, which possesses a convenient environment for analyzing electrical signals, on the basis of this complex a laboratory experiment is carried out. The advantages of the measuring LabVIEW complex and its capabilities for in-depth study of discontinuous periodic signals are noted.

Desenvolvimento de material didático para uso em aulas práticas de metrologia industrial

<p>In the current economic scenario of the Brazilian federal universities, it is a great challenge to acquire high resolution and high accuracy equipment for use in metrology practical classes. As an alternative, it is common the development of projects aiming the design and construction of low-cost courseware equipment. They are built within extension activities involving graduation students. This paper reports the development of two pieces of equipment for use in practical classes of the discipline “Principles of Industrial Metrology”, of the Mechanical Engineering course at the Federal University of São Carlos (UFSCar). The activity was supported by the Extension Office (ProEx) and had, as a premise, the use of low-cost materials and manufacturing processes. Within the proposed scope, a universal measuring table and a linear measuring machine were developed. The constructive process allowed to verify that the exercise of simple practices is a motivating experience for the student who was directly involved in the activity and for the students who use the produced equipment.</p>