Full Chapter Advances in Mechanical Engineering Selected Contributions From The Conference Modern Engineering Science and Education Saint Petersburg Russia June 2020 Alexander N Evgrafov PDF
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Lecture Notes in Mechanical Engineering
Advances in
Mechanical
Engineering
Selected Contributions
from the Conference “Modern
Engineering: Science and Education”,
Saint Petersburg, Russia, June 2020
Lecture Notes in Mechanical Engineering
Series Editors
Francisco Cavas-Martínez, Departamento de Estructuras, Universidad Politécnica
de Cartagena, Cartagena, Murcia, Spain
Fakher Chaari, National School of Engineers, University of Sfax, Sfax, Tunisia
Francesco Gherardini, Dipartimento di Ingegneria, Università di Modena e Reggio
Emilia, Modena, Italy
Mohamed Haddar, National School of Engineers of Sfax (ENIS), Sfax, Tunisia
Vitalii Ivanov, Department of Manufacturing Engineering Machine and Tools,
Sumy State University, Sumy, Ukraine
Young W. Kwon, Department of Manufacturing Engineering and Aerospace
Engineering, Graduate School of Engineering and Applied Science, Monterey,
CA, USA
Justyna Trojanowska, Poznan University of Technology, Poznan, Poland
Lecture Notes in Mechanical Engineering (LNME) publishes the latest develop-
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• Dynamical Systems, Control
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Indexed by SCOPUS. The books of the series are submitted for indexing to
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Advances in Mechanical
Engineering
Selected Contributions from the Conference
“Modern Engineering: Science
and Education”, Saint Petersburg, Russia,
June 2020
123
Editor
Alexander N. Evgrafov
Saint Petersburg Polytechnic University
Saint Petersburg, Russia
This Springer imprint is published by the registered company Springer Nature Switzerland AG
The registered company address is: Gewerbestrasse 11, 6330 Cham, Switzerland
Preface
Alexander N. Evgrafov
v
Contents
vii
viii Contents
Peter the Great St. Petersburg Polytechnic University, Saint Petersburg, Russia
lagmarina@gmail.com
1 Introduction
During the period of distance learning, university lecturers faced many problems:
In this paper, we share our experience and some of the results obtained.
To begin with, in two streams of mechanical engineering students of the Institute of
Metallurgy, Mechanical Engineering and Transport (IMMET) and in one stream of the
Institute of Energy (IE), a distance course in higher mathematics has been widely used for
a long time, covering all three semesters of the course, which mechanical engineering
students study [1–3]. This course contains video lectures, text files of recommended
textbooks, questions and tasks for self-testing, as well as control and final tests. A year
© The Editor(s) (if applicable) and The Author(s), under exclusive license
to Springer Nature Switzerland AG 2021
A. N. Evgrafov (Ed.): MMESE 2020, LNME, pp. 1–8, 2021.
https://doi.org/10.1007/978-3-030-62062-2_1
2 M. V. Lagunova et al.
ago, two courses were released on the open portal “Open Education”: https://openedu.ru/
course/spbstu/HIMAT/ and https://openedu.ru/course/spbstu/HIMAT2/. They cover the
materials of the first and second terms [4–6]. It should be noted that this is so far the only
course on the Russian open portal that covers exactly the course of higher mathematics
being studied in the general technical educational programs of universities. More than
3000 participants signed up for this course. We are constantly in touch with them - we
answer questions that arise in the learning process.
The third semester has not yet been released due to the great complexity of the work.
But, given the current situation, we plan to speed up the process and place the third
semester on the Open Portal in the near future. As for the university site https://lms.spb
stu.ru/, which is being used by students of Peter the Great St. Petersburg Polytechnic
University (SPbPU), it is based on the Moodle platform, which is more convenient and
has a lot of features that are not available on the Open Portal. For this reason, we prefer
to use this site when working with our students.
2 New Challenges
At the very beginning of the quarantine measures, on March 16, 2020, an order was issued
to start distance learning. Against the background of general confusion, and in some cases
even panic, we invited many lecturers of our Department of Higher Mathematics to our
course. For each lecturer his/her own forum was created, which was open to access only
to groups studying with this lecturer. In this forum a task was given for each study day. In
addition, each student had an opportunity to submit his/her work to this site for review.
As for the material that they had to master, the site, as already mentioned, has a full set
of video lectures (40 in total), assignments for independent solving and control tests.
In addition to the distance course, social networks were involved. Each of the authors
of this report has a personal page on Vkontakte (VK), as well as specially created groups
on this social network, where we post materials for preparing for exams and tests, as well
as the results of exams, colloquia and tests. In order to gather students, we used a general
conversation with the group leaders. By the evening of Monday, March 16, almost all
students, except for inveterate truants, went to the site lms.spbstu.ru and registered in
the forum. The forum was set up so that the mark of participation was reflected in the
table of results for both the student and the lecturer.
Since March 25, the entire SPbPU has switched to remote learning using various sites
on the same Moodle platform. All lecturers, having entered their electronic timetable,
went to the LMS website (Learning Management System), where they had an opportunity
to conduct webinars, answer questions and conduct other educational activities: surveys,
questionnaires, testing, receiving and issuing calculation assignments [7, 8].
We use the following method to check attendance: we make a forum for each specific
study day and students should go to the special topic “Attendance” and put +, and they
can do this only in a limited period of time, during the lesson itself.
Organization of Remote Education for Higher Mathematics 3
Fig. 1. Screen shot of the lecture about function level lines. Students see the behavior of level
lines for some function of several variables. Next, they need to answer the question about the level
lines of another function.
control tests, the colloquium and the final test, as well as bonuses in the form of extra
points for participating in the Olympiads and completing additional tasks, which students
themselves named «carrots», reflecting typical stimulation of domestic animals like
donkeys.
Every month, the group leaders are provided with an Excel files with intermediate
results. The task of the group leader is to convey this information to all students in the
group. Figure 2 shows the results of part of group 3331504/90001 as of May 6 of this
year. The colored cells are debts that should be closed in the near future. As mentioned
above, the student’s work is assessed throughout the term. Points can be earned for home
tests (T6 - T8 in the table), which must be completed on time. These points are taken
with a weight of 1/3. Practical exercises (the table shows that the majority is gaining
100%) are not included in the rating at all. But students know that if they score less
than 66%, they will not get the final test. The rest of the points can be obtained for the
colloquium, which we will talk about later, and, in fact, for the exam. If, for example,
the maximum possible number of points received is 100, then the marks are distributed
as follows: starting from 51 - satisfactory, from 71 - good, above 90 – excellent.
Organization of Remote Education for Higher Mathematics 5
Fig. 2. Distance learning results for one of the student groups /May 6, 2020/.
4 Methods of Proctoring
The most difficult issue when organizing distance learning is the issue of proctoring. We
need to be sure that we give a well-deserved mark to a student who did everything on his
own. According to the rules approved by order of the Ministry of Education and Science
of Russia No. 816 of 23.08.2017, SPbPU approved the Internal Regulations for Interim
Certification using exclusively e-learning and distance learning technologies (the full
text can be found on the university website).
Interim certification can be carried out in the following forms:
• computer testing,
• oral interview;
• a combination of the listed forms.
Taking into account the large number of students in study streams passing higher
mathematics, and the specifics of the discipline itself, we stopped at the first approach -
computer testing. Computer testing is carried out using the specialized free software Safe
Exam Browser, which blocks the opening of windows on the student’s computer, except
for the window with the task (test). In this case, before testing begins, the teacher in the
MS Teams webinar room begins the meeting by turning on video recording, conducting
identification of individuals and inspecting the premises of all students participating
in the testing, fixing students who did not appear for interim certification. A student
who has begun to perform the test before the identification of his personality, according
to the results of the intermediate certification, receives an unsatisfactory grade. The
advantage of this type of certification is the ability to conduct it for several groups at
the same time (for a stream). The disadvantages include, firstly, that the Safe Exam
Browser software must be installed on the student’s computer prior to the start of the
intermediate certification. Secondly, the very process of performing computer testing
by a student cannot be recorded, i.e. students take the test without proctor supervision.
Thirdly, for a large stream, identification of individuals and inspection of the premises
of all students is simply impossible.
For our part, we tested the capabilities of the webinar in MS Teams and would
like to share the following observations. At the beginning of May, at the numerous
6 M. V. Lagunova et al.
requests of students, a traditional colloquium in our course was held according to a very
unconventional scheme. First, a survey was created on the desire to participate in the
colloquium and on the availability of the necessary funds. This refers to uninterrupted
Internet access and the availability of an acceptable web camera. 143 students out of
159 registered on the site indicated their desire to participate. The number 159 does
not quite correspond to reality; unfortunately, it also includes already expelled students,
there are about 10 of them. The colloquium was held in two days, with only 3 volunteers
participating on the first day. This allowed us to test our capabilities in a sparing manner.
On the second day, the number of participants was already 140.
For the colloquium, a special test was compiled, as expected, of 30 tasks. For each
task, 10–15 variants were created, so the test variants were equivalent, but not the same. A
small part of the questions was borrowed from those tests that students already completed
as homework, the rest were created a new. Test writing time is limited to two hours. Only
one attempt planned. Login is carried out with a password, which was changed after the
first 3 students passed the test. They learned their results only together with classmates.
Since the colloquium includes not only practical questions, but also theoretical ones,
the student had to prove something, derive or write down one of the formulas. For this
purpose, questions of the “Essay” type were introduced into the test, in which the student
had to either type the required text, including formulas, or write it on paper, photograph
and insert the answer as a file. In order not to use homework, the theoretical tasks were
concretized, that is, the derivation of the formula was required not in general form, but
in a particular case. The big disadvantage of this type of questions is that they are tested
separately, and the student does not see his result in points immediately after testing. We
had 5 such questions in each test, it is probably worth reducing this number to one or
two.
Before the test, the students’ record-books were checked, not for all, but selectively,
for two reasons - firstly, we already know our students by sight, and secondly, it was
technically impossible, given the number of participants. A video was included that
recorded the entire process of passing the colloquium. In total, there were three lecturers
who supervised the work of students. The students did not know what the two of them
saw, but the observation was carried out constantly. The lecturers’ cameras were turned
off. The students’ microphones were also turned off, but at the right moment it was
possible to select any student, display his image on the screen, ask a question or answer
a question that arose. After completing the work, in question 31, any student had to take
a photo of his draft and upload it to the test. This was the sixth Essay question that was
not scored. This was where his participation ended. We must say that the ability to send
large files to the LMS-site is not the same for everyone. It all strongly depends on the
quality of the local Internet connection. Therefore, those who were unable to do this
within two hours of testing could send drafts to the social network VK, but no later than
within 20 min after the end of testing. The students were able to find out their results the
next day because the lecturers had to check the essay. Analysis of errors was carried out
at the webinar, during the practical sessions. Any student could see his/her answers, the
lecturer explained mistakes in MS Teams.
Organization of Remote Education for Higher Mathematics 7
Fig. 3.
The highest score is 69, it was received by a single student, as is usually the case
when conducting a colloquium in the classroom. Two students lost contact for various
reasons - they will rewrite work with those who scored less than 50% of the points.
Rewriting, by the way, also entails the accrual of penalty points, but this, of course, will
not apply to those who have lost communication.
In conclusion, a few words about how you can use the gained experience in the normal
learning mode. It seems to us that practical exercises in the «Lecture» format may well
replace the usual homework assignments, the completion of which is easy to check. Even
if the student enters the answers known in advance, this is no different from the fact that
he copied the answer from the end of a textbook. The fact is that whoever wants to learn
will learn, and whoever wants to deceive someone will be deceived himself/herself. In
the regular (not remote) mode, the student will have to solve similar problems on a
full-time exam or on a test.
You can successfully use the distance test while in the classroom. At the same time,
there is no doubt that the student performs the test on his/her own, especially if we take
into account the fact that he/she will certainly have to pass a draft. The great advantage
of this approach is that the time for verification is significantly reduce and free up in
order to further improving the distance course. Information about distance learning both
in Russia and other countries and experience obtained during pandemic time can also
be found in [10–16].
8 M. V. Lagunova et al.
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IIRTS 2019. Lecture Notes in Mechanical Engineering. Springer, Cham (2020)
Industrial Cyber-Physical Systems Engineering:
The Educational Aspect
juho.maekioe@hs-emden-leer.de
Abstract. This work discusses issues and approaches to organizing training for
specialists in the field of engineering of industrial cyber-physical systems (ICPS)
at technical universities. An overview of the current state of research in the field
of competence models of a future specialist, expectations of industrial enterprises
is presented. This work proposes a novel educational approach T-CHAT and its
application in education of engineers in the field of ICPS. Additionally, a com-
prehensive organization and provision of students are examined connecting the
competency model, the architectural model of the “smart factory”, the forma-
tion of curricula, and individual educational trajectories of students. Furthermore,
this work formulates recommendations for the use of the indicated practices and
approaches in the training of specialists in the framework of consideration of the
educational aspect of the engineering of industrial cyber-physical systems.
1 Introduction
Modern industry is interested in the new generation of specialists who will design and
create “smart” factories with a high degree of automation, flexibility, self-organization,
and the ability to quickly respond to individual consumer requests. The training of such
specialists is based on the study of new information and manufacturing technologies,
such as digital design, modeling and simulation, digital manufacturing, additive and
hybrid technologies, robotics, industrial sensing, industrial Internet of things (IIoT),
service-oriented architecture (SOA), processing large data (Big Data), artificial intelli-
gence, machine learning, information systems for production and enterprise management
and others.
A modern industrial enterprise that operates and organizes its production processes
on the basis of aforementioned technologies can be considered as an ICPS. In general
terms, cyber-physical systems are understood as a network technical system consisting
© The Editor(s) (if applicable) and The Author(s), under exclusive license
to Springer Nature Switzerland AG 2021
A. N. Evgrafov (Ed.): MMESE 2020, LNME, pp. 9–19, 2021.
https://doi.org/10.1007/978-3-030-62062-2_2
10 O. A. Abyshev et al.
of digital (virtual) and physical systems (components) interacting with each other. In an
ICPS physical components are machines and robots, devices and tools, transport systems
and any other active (that is, identified, capable of interacting with other objects and
control system) material objects used in the manufacturing processes of products. Virtual
objects are digital representations (digital twins in perspective) of physical objects. The
software is provided upon request from the ICPS components as cloud services when
the system performs the corresponding tasks. The basic technology for organizing the
communication of all components is the industrial Internet of things (IIoT). Thus, the
main parameters of an ICPS allow us to consider it as one of the basic concepts of
Industry 4.0 [22].
The new requirements put forward by the industry require constant improvement of
master’s programs, within the framework of which it is possible to organize the study of
the construction and operation of ICPS. This is an urgent task for the Russian Federation
and is being actively discussed abroad [2, 3]. The content of the program is determined
by the chosen direction of training and the need to form competencies among students
in accordance with accepted standards.
The purpose of the research is to select or develop educational approaches that could
take into account the specifics of this topic, determine and justify the application of
the basic methodology that logically connects the proposed academic disciplines, and
propose an approach to organizing a real production and technological environment for
experimental research and development of ICPS components.
ICPS is an interdisciplinary field of knowledge that requires the use of special teach-
ing methods. The use of interdisciplinary teaching allows learners to integrate informa-
tion, data, methods, tools, concepts and theories from two or more disciplines to create
ideas and models, explain phenomena, or solve problems in ways that are difficult to
describe and logically construct using the approaches of only one discipline [4]. Thus,
teaching methods that support interdisciplinary learning are the preferred choices for
ICPS teaching.
Today, despite the use of modern educational approaches, graduates of engineering
specialties do not meet industry expectations in hard-skills and soft-skills [8–10]. One
of the options for solving the significant gap between the requirements of the industry
and the system of training engineers is the use of a holistic adaptive educational app-
roach T-CHAT, focused on solving problems in the process of training engineers in the
field of industrial cyber physical systems [6, 7]. This approach is aimed at improving
the methodological, social and personal competencies of students along with the devel-
opment of disciplinary knowledge and skills. The main idea of T-CHAT, according to
the authors, is to use five pedagogical teaching approaches: perceptual, design, prob-
lem, research and full-time, and combine them in order to increase the efficiency of this
process by flexibly varying pedagogical methods in accordance with changing needs
students and industry. This educational approach is being introduced and developed as
part of a new curriculum for the preparation of undergraduates at ITMO University in
the field of ICPS. Teaching students is carried out in accordance with the accepted model
of modular training of students [5].
Fig. 1. The choice of academic disciplines based on the reference architectural model RAMI
the student can change the order or structure of educational modules. For example, hav-
ing received the task to implement the integration of software modules for monitoring
equipment with an enterprise resource management system, the student will need skills
in software engineering, network protocols, and system integration. These aspects can
be studied by students by introducing additional modules by replacing them, rotating or
expanding the curriculum. To consolidate the acquired knowledge in practice and test
the hypotheses and solutions developed, the student will need a learning environment for
prototyping and debugging. This task can be solved in several ways: building a prototype
in an educational factory, pilot projects with industrial partners, etc.
The role of technical universities today is to be a center for the creation of advanced
technologies and innovative development projects for various industries, to act as the
organizer of a new educational ecosystem, integrating the current and future needs of
industry with advanced research, technologies and approaches in training specialists.
This determines the key task of universities, namely, predicting the sources of future
scientific breakthroughs and working “ahead of the curve”: preparing specialists for the
requirements of future reality, considering the duration of the academic training cycle.
Industrial Cyber-Physical Systems Engineering 15
the RAMI 4.0 architecture notation, which ensures that the project relates to the proposed
model for constructing an educational trajectory by students.
In 2019, in collaboration with international industrial and academic partners, in
collaboration with international industrial and academic partners, as part of the creation
and provision of an educational environment, a new master’s program “Industrial Cyber-
Physical Systems” was created. This program is focused on training a new generation of
specialists for the development of high-tech industry in the format of “smart” industries
with a high degree of automation, flexibility, self-organization, the ability to quickly
respond to individual consumer requests.
The program covers such advanced information and production technologies as
digital design and modeling, digital manufacturing, additive and hybrid technologies,
robotics, industrial sensing, the industrial Internet of things (IIoT) and services, big data
and artificial intelligence, and also information systems for production and enterprise
management in general. This set of technologies meets and supports the development of
new competencies among students in accordance with future technology development
trends for Industrie 4.0 (Fig. 2).
It should be noted that ITMO University has extensive experience in creating Engi-
neering Centers that meet the challenges of building educational factories [24]. There is
considerable experience based on the PLM paradigm - product life cycle management.
So, in order to ensure a holistic educational approach and in order to develop a new
direction for training masters at the university, together with industrial partners, a labo-
ratory “Digital production technologies” was created based on the conceptual provisions
of the RAMI reference architecture - the basis for future smart industries:
• BiPitron JV LLC, as an expert in the field of PLM class information systems and
digital Internet of things platforms. Partner of ITMO University in the ICPS corporate
master’s program;
• Schneider Electric, a global leader in providing digital solutions for power manage-
ment and automation. Partner of ITMO University in the ICPS corporate master’s
program;
• PJSC Techpribor, a historical partner of the university, supports the concept of dig-
ital production in a joint laboratory. The company is engaged in the development,
production, certification and maintenance of on-board avionics.
7 Conclusion
The educational aspect of the engineering of ICPS is a complex task requiring the
revision of classical approaches in the training of technical specialists in view of its
multidisciplinary structure and the high expectations placed by the industry. The use
of new combinations of methods, the rethinking of classical approaches along with the
study of the achievements of leading international centers, can become the basis of a new
intellectual philosophy and attitude towards the construction of the educational process
in academic environments and universities.
18 O. A. Abyshev et al.
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System Analysis of Cold Axial Rotary Forging
of Thin-Walled Tube Blanks
Peter the Great St. Petersburg Politechnic University, St. Petersburg, Russia
l_axenov@mail.spbstu.ru, kunkin@spbstu.ru, nicitanic@yadex.ru
Abstract. The paper presents the results of a system analysis of the process of
cold axial rotary forging of parts from thin-walled tube blanks with a conical
roll. The technology is designed for manufacturing axisymmetric hollow parts of
various shapes. A feature of the process is the possible loss of stability of the shape
of the tube blanks, which does not allow getting the parts of the required geometry.
On the basis of experiments and computer simulation of the process, six types of
metal flow of the tube blank during rotary forging are determined, three of which
are associated with the loss of stability of the tube blank. The main ten parameters
that affect the technological process, including the kinematic characteristics of the
machine and the geometric parameters of the tube blanks are systematized. Only
three parameters can actually be used to control the metal flow. Recommendations
are offered to reduce the time of adequate computer simulation of metal flow when
forming tube blanks in the Deform 3D complex, which is used to determine the
rational values of the parameters of a stable rotary forging process.
1 Introduction
Axial rotary forging is a representative of technology with local deformation of the
formed metal. In this case, only a part of the blank is in contact with the deforming tool.
That reduces the contact area and the amount of contact stresses, and, accordingly, the
necessary forming force, which ensures the effectiveness of the process, especially in
small-scale production. The capabilities of this relatively new technology are not yet
fully established. At the present stage, considerable attention is paid to the development
of new kinematic schemes of machines and the type of forming tool [1–3], as well as to
the expansion of the application of rotary forging to obtain specific parts [4], including
from new materials [5–7].
Parts made by axial rotary forging from thin-walled tube blanks can have a variety of
shapes: with external and internal flanges, with conical bell mouth or spherical surfaces
(Fig. 1).
Manufacturing of parts from thin-walled tube blanks by axial rotary forging has a
number of technological features. Non-wide flanges with a thickness of the flanged part
© The Editor(s) (if applicable) and The Author(s), under exclusive license
to Springer Nature Switzerland AG 2021
A. N. Evgrafov (Ed.): MMESE 2020, LNME, pp. 20–29, 2021.
https://doi.org/10.1007/978-3-030-62062-2_3
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