The Subject of Engineering Practice Education

2000 ◽  
Vol 2000.4 (0) ◽  
pp. 599-600
Author(s):  
Hidetoshi HAYAFUJI ◽  
Yoshio MURAKAMI ◽  
Motomu YOKOMORI ◽  
Muneshige OKUDE

In a previous paper by the writer an examination was made of the torsional vibrations occurring in a reciprocating engine shaft. The case studied was that of a shaft driven by a six-cylinder engine, all parts except the shaft being considered rigid. Certain interesting results, arising from the action of the reciprocating parts, appeared. On account of the importance of the subject of torsional vibrations in engineering practice, and on account of the unexpected nature of the analytical results, it was considered of some interest to examine in greater detail the effect of the reciprocating parts in producing or modifying the vibrations. For this purpose a model is proposed which, it is considered, is as simple as can be conceived, and which, at the same time, involves the characteristics of reciprocating motion. The model is described and the analytical results obtained in Part I of this paper. To verify the analysis, the model was set up in the laboratory and the vibrations observed. Further, to simplify the experimental work, it was thought sufficient for the purposes of verification to arrange it in the first place so as to give only a qualitative agreement with theory, and therefore a precise quantitative agreement was not aimed at, and should not be looked for. An experiment on a much more refined method is being proceeded with to examine minutely into the numerical accuracy of the theory. The details of the present experiment and the numerical results are given in Part II.


2021 ◽  
Vol 6 (5) ◽  
pp. 138
Author(s):  
Wang Xi ◽  
Liu Jian ◽  
Zhang Xiaojun ◽  
Xue Zhengkun

Author(s):  
Lidia Sergeevna Napreenko

The object of this research is the transport hub in urban environment, while the subject is the engineering capacity of its design. Based on the previously conducted classification, the author determines the key trends in modern engineering practice, illustrated by the examples of Russian and foreign projects. The goal of this research is to explore the peculiarities of design characteristics of a transport hub in urban environment and give them a comprehensive description. Special attention is turned to characteristics as the range of colors and materials. The author examines the coloristic solution of the compositions of transport hub, as well as the impact of color perception upon the stress level of the passengers. The main results of this research consist in the determined coloristic characteristics of TPU-design depending on the spatial structure of the hub and its location in the urban environment. The novelty lies in the analysis of transport hubs from the perspective of design, as well as in outlining the term “TPU-design”, which characterizes the entirety of the elements of spatial composition and artistic-expressive means. The author's special contribution consists in accumulation and systematization of information on the most interesting projects of transport hubs from the perspective of the concept of “TPU-design”.


1964 ◽  
Vol 37 (2) ◽  
pp. 24-34 ◽  
Author(s):  
A. E. Juve

Abstract Measurements are basic to all natural sciences, in fact some say that science is measurement. Whether it is the measurement of the temperature on the moon or the hysteresis properties of a rubber compound, the measurements are intended to give us accurate data with which to proceed further in our understanding of nature. Measurements and analyses are essential in every stage of rubber science and technology from the synthesis of a new rubber chemical to measurements of performance of some complex product such as a tire in service. The all-pervading role of measurements is frequently not appreciated, but a simple observation which each of us can make will demonstrate this fact. A cursory examination of the slides presented at this and other Division of Rubber Chemistry meetings will show that at least 95% of them contain the results of physical or chemical tests required to demonstrate, illustrate or prove a point the speaker is attempting to make. Furthermore, many of the papers will be concerned solely with a new test method or method of analysis. Although as a compounder my work was only incidentally involved with testing, the subject of testing has been a most absorbing interest of mine and it seemed that a discussion of some aspects of it would be acceptable for this lecture. A rough distinction can be made between those tests involved with the fundamental science of rubber as a primary aim and those involved with the engineering practice of rubber technology, although there is an inevitable overlapping. My concern here will be with the latter group and, in general, with those methods which have been standardized by Committee D-11 of ASTM. My central theme will be that too much testing is done, that many of the methods are inadequate, that many are inadequately understood by the users and inadequate analysis and interpretation are made of the data obtained. In an attempt to brighten the picture a little, I will conclude by discussing some new methods which appear to be decided improvements, both from performance and in being adequate in respect to being easily understood by most users. What I have to say will be somewhat critical of the methods used and sympathetically critical of the people who use them. At the start I should point out that criticism of the methods is not a criticism of Committee D-11 of ASTM. It should be realized that D-11 almost invariably standardizes methods which are fairly widely used in the industry and for which a need for standarization is expressed by the industry. The Committee rarely develops new methods, although it can be said that in the process of standardization, methods are usually improved. One of the more important purposes of standardization is to formulate methods so that different laboratories will obtain reasonably reproducible values without which chaos would result.


2020 ◽  
Vol 3 (3) ◽  
pp. 63
Author(s):  
Li Li

<p>The application of computer in materials science, as a professional basic course for undergraduates majoring in materials science and engineering, is both theoretical and operational. At the same time, the practicality and applicability of this course are also obvious. Therefore, there are great challenges for teachers’ teaching and students’ learning. Based on this, combined with the teaching characteristics of the subject, this article explores the teaching reform and practice in terms of teaching content, teaching means and teaching methods, in order to improve the training of high-level applied talents in colleges and universities. The curriculum reform has changed the traditional one-way knowledge transmission teaching mode, which is of great benefit to cultivating students’ engineering literacy, engineering practice ability and innovation ability.</p>


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