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Technologies
Special Issues
Advances and Innovations in Manufacturing Technologies
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Advances and Innovations in Manufacturing Technologies

A special issue of Technologies (ISSN 2227-7080). This special issue belongs to the section "Manufacturing Technology".

Deadline for manuscript submissions: closed (31 July 2021) | Viewed by 18263

Special Issue Editor

Dr. Eugene Wong

E-Mail Website
Guest Editor
Engineering Cluster, Singapore Institute of Technology, 10 Dover Drive, Singapore 138683, Singapore
Interests: additive manufacturing; microwave processing; composite materials; repair of polymeric composites
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Manufacturing is rapidly evolving globally amid raising trade tensions, growing economic uncertainty, and increasing awareness of sustainability and the value of data. One of the key changes in manufacturing arises from Industry 4.0, which includes digitalisation and automation of processes, additive manufacturing, applications of machine learning and artificial intelligence in manufacturing, Industrial Internet of Things (IIoT), digital twin and cyber physical systems. Another key change in manufacturing comes from increasing environmental awareness and sustainability, which includes improving the energy and resource efficiency of manufacturing processes, reduction of plastics, and minimisation of wastes created in the development of new sustainable materials and processes, and life cycle assessment.

The Special Issue is intended to report on the latest advances and innovations in manufacturing technologies. Topics of interest include, but are not limited to:

  • Advances and innovations in traditional manufacturing processes
  • Additive manufacturing
  • Automation and robotics
  • Machine learning and artificial intelligence applications in manufacturing
  • Sustainable or green manufacturing
  • Energy efficiency and optimisation of manufacturing processes
  • New sustainable materials and manufacturing processes

Assoc. Prof. Eugene Wong
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. Technologies 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 1600 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

  • Additive manufacturing
  • Industry 4.0
  • Smart manufacturing
  • Advanced Robotics
  • Machine learning
  • Micro- and nanomanufacturing
  • Sustainable manufacturing
  • Sustainable materials
  • Energy optimisation
  • Advanced manufacturing
  • Industrial Internet of Things (IIoT)
  • Cyber-Physical Systems

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  • Greater discoverability: Special Issues support the reach and impact of scientific research. Articles in Special Issues are more discoverable and cited more frequently.
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  • External promotion: Articles in Special Issues are often promoted through the journal's social media, increasing their visibility.
  • Reprint: MDPI Books provides the opportunity to republish successful Special Issues in book format, both online and in print.

Further information on MDPI's Special Issue policies can be found here.

Published Papers (4 papers)

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Research

30 pages, 8357 KiB  
Article
Digitization of Manufacturing Processes: From Sensing to Twining
by Panagiotis Stavropoulos
Technologies 2022, 10(5), 98; https://doi.org/10.3390/technologies10050098 - 30 Aug 2022
Cited by 24 | Viewed by 4865
Abstract
Zero-defect manufacturing and flexibility in production lines is driven from accurate Digital Twins (DT) which monitor, understand, and predict the behavior of a manufacturing process under different conditions while also adapting to them by deciding the right course of action in time intervals [...] Read more.
Zero-defect manufacturing and flexibility in production lines is driven from accurate Digital Twins (DT) which monitor, understand, and predict the behavior of a manufacturing process under different conditions while also adapting to them by deciding the right course of action in time intervals relevant to the captured phenomenon. During the exploration of the alternative approaches for the development of process twins, significant efforts should be made for the selection of acquisition devices and signal-processing techniques to extract meaningful information from the studied process. As such, in Industry 4.0 era, machine tools are equipped with embedded sensors that give feedback related to the process efficiency and machine health, while additional sensors are installed to capture process-related phenomena, feeding simulation tools and decision-making algorithms. Although the maturity level of some process mechanisms facilitates the representation of the physical world with the aid of physics-based models, data-driven models are proposed for complex phenomena and non-mature processes. This paper introduces the components of Digital Twin and gives emphasis on the steps that are required to transform obtained data into meaningful information that will be used in a Digital Twin. The introduced steps are identified in a case study from the milling process. Full article
(This article belongs to the Special Issue Advances and Innovations in Manufacturing Technologies)
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13 pages, 4359 KiB  
Article
Robot Operations for Pine Tree Resin Collection
by Vladimir Gurau, Beau Ragland, Daniel Cox, Andrew Michaud and Lloyd Busby
Technologies 2021, 9(4), 79; https://doi.org/10.3390/technologies9040079 - 27 Oct 2021
Cited by 4 | Viewed by 3441
Abstract
A robotic technology consisting of an industrial robot mounted on an autonomous rover used to tap slash pine trees and collect their oleoresin for processing is introduced, and the technological challenges related to the robotic operations are discussed in detail. Unlike the case [...] Read more.
A robotic technology consisting of an industrial robot mounted on an autonomous rover used to tap slash pine trees and collect their oleoresin for processing is introduced, and the technological challenges related to the robotic operations are discussed in detail. Unlike the case of industrial automated manufacturing systems where the relative position between the tool and workpiece can be controlled within a few hundredths of a millimeter accuracy, when used in highly unstructured environments characteristic to forestry or agriculture, the positioning accuracy between the industrial robot and the target on which it operates can be much lower than the accuracy required for the operation of the industrial robot. The paper focuses on presenting the robotic operations necessary for drilling three converging boreholes in the pine tree, spraying the boreholes with chemicals, inserting a plastic tube with pre-attached collection bag in one borehole and inserting two plugs in other two boreholes. The challenges related to performing these robotic operations in conditions of large variations in the actual shape of the pine tree trunk and variations in the relative position between the robot and the pine tree after the autonomous vehicle positions itself in front of the tree are presented. The technical solutions used to address these challenges are also described. The strategies used to programmatically adjust the robot toolpath based on detection of the borehole entry points and on the measurement of the insertion force are presented. Full article
(This article belongs to the Special Issue Advances and Innovations in Manufacturing Technologies)
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10 pages, 3220 KiB  
Article
Surface Modification of Polyethersulfone (PES) with UV Photo-Oxidation
by Ibrahim Cisse, Sarah Oakes, Shreen Sachdev, Marc Toro, Shin Lutondo, Devon Shedden, Kristen Margaret Atkinson, Joel Shertok, Michael Mehan, Surendra K. Gupta and Gerald A. Takacs
Technologies 2021, 9(2), 36; https://doi.org/10.3390/technologies9020036 - 11 May 2021
Cited by 10 | Viewed by 3900
Abstract
Polyethersulfone (PES) films are widely employed in the construction of membranes where there is a desire to make the surface more hydrophilic. Therefore, UV photo-oxidation was studied in order to oxidize the surface of PES and increase hydrophilicity. UV photo-oxidation using low pressure [...] Read more.
Polyethersulfone (PES) films are widely employed in the construction of membranes where there is a desire to make the surface more hydrophilic. Therefore, UV photo-oxidation was studied in order to oxidize the surface of PES and increase hydrophilicity. UV photo-oxidation using low pressure mercury lamps emitting both 253.7 and 184.9 nm radiation were compared with only 253.7 nm photons. The modified surfaces were characterized using X-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM), and water contact angle (WCA) measurements. Both sets of lamps gave similar results, showing an increase of the oxygen concentration up to a saturation level of ca. 29 at.% and a decrease in the WCA, i.e., an increase in hydrophilicity, down to ca. 40°. XPS detected a decrease of sp2 C-C aromatic group bonding and an increase in the formation of C-O, C=O, O=C-O, O=C-OH, O-(C=O)-O, and sulphonate and sulphate moieties. Since little change in surface roughness was observed by AFM, the oxidation of the surface caused the increase in hydrophilicity. Full article
(This article belongs to the Special Issue Advances and Innovations in Manufacturing Technologies)
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10 pages, 13919 KiB  
Article
Hot Isostatic Pressing of Aluminum–Silicon Alloys Fabricated by Laser Powder-Bed Fusion
by Stephan Hafenstein, Leonhard Hitzler, Enes Sert, Andreas Öchsner, Markus Merkel and Ewald Werner
Technologies 2020, 8(3), 48; https://doi.org/10.3390/technologies8030048 - 18 Sep 2020
Cited by 13 | Viewed by 5032
Abstract
Hot isostatic pressing can be utilized to reduce the anisotropic mechanical properties of Al–Si–Mg alloys fabricated by laser powder-bed fusion (L-PBF). The implementation of post processing densification processes can open up new fields of application by meeting high quality requirements defined by aircraft [...] Read more.
Hot isostatic pressing can be utilized to reduce the anisotropic mechanical properties of Al–Si–Mg alloys fabricated by laser powder-bed fusion (L-PBF). The implementation of post processing densification processes can open up new fields of application by meeting high quality requirements defined by aircraft and automotive industries. A gas pressure of 75 MPa during hot isostatic pressing lowers the critical cooling rate required to achieve a supersaturated solid solution. Direct aging uses this pressure related effect during heat treatment in modern hot isostatic presses, which offer advanced cooling capabilities, thereby avoiding the necessity of a separate solution annealing step for Al–Si–Mg cast alloys. Hot isostatic pressing, followed by rapid quenching, was applied to both sand cast as well as laser powder-bed fused Al–Si–Mg aluminum alloys. It was shown that the critical cooling rate required to achieve a supersaturated solid solution is significantly higher for additively manufactured, age-hardenable aluminum alloys than it is for comparable sand cast material. The application of hot isostatic pressing can be combined with heat treatment, consisting of solution annealing, quenching and direct aging, in order to achieve both a dense material with a small number of preferred locations for the initiation of fatigue cracks and a high material strength. Full article
(This article belongs to the Special Issue Advances and Innovations in Manufacturing Technologies)
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