Symmetry and Its Application in Industrial Engineering

A special issue of Symmetry (ISSN 2073-8994). This special issue belongs to the section "Engineering and Materials".

Deadline for manuscript submissions: closed (31 January 2024) | Viewed by 7805

Special Issue Editor

Campus de Arrosadía, Universidad Pública de Navarra, 31006 Pamplona, Spain
Interests: manufacturing engineering; machining

Special Issue Information

Dear Colleagues,

The occurrence of phenomena or symmetric geometries is common when observing behavior in industrial systems. The treatment and analysis of the symmetrical nature of the operations, processes and/or systems that make them up can allow them to be understood in a more comprehensive way.

The behavior of industrial systems and the application of symmetry can by approached at multiple levels, from the perspective of production to the microscale material behavior level.

The aim of this Special Issue is to encourage the publication of original research papers in a wide variety of fields related to industrial engineering, in which theoretical or practical results of symmetry can be applied. We are soliciting contributions (research and review articles) covering a broad range of topics on symmetry and its application on engineering, including (though not limited to) the following:

1) inspection or geometric modeling of symmetry features in all kinds of produced parts (transport, electronic, mechanical civil, aeronautic, etc. applications);

2) symmetrical design and circular economy processes;

3) continuous process modeling;

4) symmetrical material behavior and mechanical performance,

5) digital twins of symmetrical materials during production processes and treatments;

6) symmetry on industrial process monitoring (application of machine learning techniques based on symmetry/asymmetry);

7) symmetry in production overview and workflow analysis;

This Special Issue is open to other industrial applications and approaches. Review articles covering symmetry in engineering applications are also encouraged.

Prof. Dr. Fernando Veiga-Suárez
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Symmetry is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • asymmetry
  • industrial process fluctuating asymmetry
  • developmental instability
  • part quality
  • monitoring of symmetry and asymmetry evolution of monitoring processes
  • applied problems focusing on the role of symmetry in industrial devices

Published Papers (3 papers)

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Research

14 pages, 5724 KiB  
Article
A Method to Design Profiled Cutting Tools for Inner Turning
by Mircea-Viorel Dragoi, Luminita Parv, Adrian Mija and Gheorghe Oancea
Symmetry 2022, 14(12), 2690; https://doi.org/10.3390/sym14122690 - 19 Dec 2022
Viewed by 1400
Abstract
Designing the profile of cutting tools is a specific problem in manufacturing engineering. The profile of the cutting tool has a direct influence on the dimensional and shape precision of the machined parts. When it comes to cutting tools for internal turning, the [...] Read more.
Designing the profile of cutting tools is a specific problem in manufacturing engineering. The profile of the cutting tool has a direct influence on the dimensional and shape precision of the machined parts. When it comes to cutting tools for internal turning, the problem of profile design becomes even more complex, because of the added restrictions the profile and the cutting tool itself are subjected to. Despite its importance and complexity, this problem has been rather poorly considered in the literature. Some side aspects, such as measuring the profile, its wear, and its influence on the part’s geometrical precision have been studied, but not the design process of the profiled shape of cutting edges. This research fills a gap in the literature. It considers profiled cutting tools, in general; and, in particular, investigates tilted cutting edges. The novelty of the present article lies in a method to determine the profile of cutting tools for turning inner-profiled surfaces. The method is CAD-based and provides accurate results. It considers the part’s inner profile, its inner diameter, and the tilting angle of the cutting edge. In addition, possible undercuts are taken into account. The method was validated using two relevant case studies. Despite profiled cutting tools having a certain drawback, which is emphasized in the article, this is balanced by the advantages that their use offers manufacturing. Full article
(This article belongs to the Special Issue Symmetry and Its Application in Industrial Engineering)
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16 pages, 23883 KiB  
Article
Effect of the Metal Transfer Mode on the Symmetry of Bead Geometry in WAAM Aluminum
by Fernando Veiga, Alfredo Suárez, Eider Aldalur and Trunal Bhujangrao
Symmetry 2021, 13(7), 1245; https://doi.org/10.3390/sym13071245 - 10 Jul 2021
Cited by 15 | Viewed by 2598
Abstract
The symmetrical nature in the case of wall fabrication by wire arc additive manufacturing (WAAM) has been observed in the literature, but it has not been studied as a source of knowledge. This paper focuses on the comparative study of three drop transfer [...] Read more.
The symmetrical nature in the case of wall fabrication by wire arc additive manufacturing (WAAM) has been observed in the literature, but it has not been studied as a source of knowledge. This paper focuses on the comparative study of three drop transfer methods employing Gas Metal Arc Welding (GMAW) technology, one of the most reported for the manufacture of aluminum alloys. The transfer modes studied are the well-known pulsed GMAW, cold arc, and the newer pulsed AC. The novelty of the last transfer mode is the reversal of the polarity during the preparation phase of the substance for droplet deposition. This study compares the symmetry of zero beads to determine the best parameters and transfer modes for wire arc additive manufacturing of 5 series aluminum. The pulsed transfer modes show values of 0.6 for symmetry ratio, which makes them more interesting strategies than cold arc with a symmetry ratio of 0.5. Furthermore, the methodology proposed in this study can be extrapolated to other materials manufactured with this technology. Full article
(This article belongs to the Special Issue Symmetry and Its Application in Industrial Engineering)
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14 pages, 311 KiB  
Article
An Inventory Ordering Model for Deteriorating Items with Compounding and Backordering
by Cenk Çalışkan
Symmetry 2021, 13(6), 1078; https://doi.org/10.3390/sym13061078 - 16 Jun 2021
Cited by 10 | Viewed by 1931
Abstract
We consider the optimal order quantity problem for exponentially deteriorating items where the opportunity cost is based on compound interest and backorders are allowed. Our objectives in this research are to develop a model that accurately models deterioration, compound interest and backordering, and [...] Read more.
We consider the optimal order quantity problem for exponentially deteriorating items where the opportunity cost is based on compound interest and backorders are allowed. Our objectives in this research are to develop a model that accurately models deterioration, compound interest and backordering, and determine a near-optimal and intuitive closed-form solution for the proposed model. Deteriorating items include various chemicals, gasoline and petroleum products, fresh produce, bulk and liquid food products, batteries, and some electronic components. These items incur losses over time due to spoilage, evaporation, chemical decomposition, breakdown, or deterioration in general. Exponential deterioration is commonly used to model this phenomenon, which results in a negative exponential inventory level function, which is asymmetric in the sense that the rate of depletion is highest at the beginning of an ordering cycle, and lowest at the end. On the other hand, the rate of deterioration for individual items is the same at both ends of the cycle, which means it is symmetric. Compounding also leads to exponential terms in the opportunity cost function. Both of these factors result in a total cost function that does not have a closed-form optimal solution. We therefore approximate the total cost function using a Taylor series expansion approximation of the exponential function and derive a closed-form solution that is simple and logical, and very close to the exact optimum, which makes it attractive to the practitioners as a quick and accurate calculation. Our closed form solutions for both the basic and the planned backorders models are very close to the exact optimum, as shown by extensive numerical experiments. Full article
(This article belongs to the Special Issue Symmetry and Its Application in Industrial Engineering)
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