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Mixture Distributions in Autonomous Decision-Making for Industry 4.0

SAE International Journal of Materials and Manufacturing

Oakland University, USA-Christopher Slon, Vijitashwa Pandey, Sam Kassoumeh
  • Journal Article
  • 05-12-02-0011
Published 2019-05-29 by SAE International in United States
Industry 4.0 is expected to revolutionize product development and, in particular, manufacturing systems. Cyber-physical production systems and digital twins of the product and process already provide the means to predict possible future states of the final product, given the current production parameters. With the advent of further data integration coupled with the need for autonomous decision-making, methods are needed to make decisions in real time and in an environment of uncertainty in both the possible outcomes and in the stakeholders’ preferences over them. This article proposes a method of autonomous decision-making in data-intensive environments, such as a cyber-physical assembly system. Theoretical results in group decision-making and utility maximization using mixture distributions are presented. This allows us to perform calculations on expected utility accurately and efficiently through closed-form expressions, which are also provided. The practical value of the method is illustrated with a door assembly example and compared to traditional random assembly methods and results.
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Development of an Emergency Stop Assist System

Toyota Motor Corp.-Kazuhiro Morimoto, Masato Takagi, Takashi Oda
Tri-AD-Masaki Takano, Naoki Nishimura
Published 2019-04-02 by SAE International in United States
Social concern with traffic accidents caused by driver’s medical emergencies has been growing for the last several years. In Japan, the government issued technical guidelines in June 2016 to promote systems that deal with such accidents. Based on those guidelines, the Emergency Stop Assist system was manufactured in October 2017 to help reduce such accidents. This article first describes its purpose and core design, then presents an overview of the system, and finally discusses its effectiveness.
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Metal 3D Printing for Complex Heat Exchangers

  • Magazine Article
  • TBMG-34154
Published 2019-04-01 by Tech Briefs Media Group in United States

Renishaw West Dundee, IL


Mobile Laser Trackers for Aircraft Manufacturing: Increasing Accuracy and Productivity of Robotic Applications for Large Parts

FFT Produktionssysteme GmbH & Co KG-Fabian Ehmke
Fraunhofer IFAM-Christoph Brillinger, Till Staude, Kevin Deutmarg, Maximilian Klemstein, Christian Boehlmann
Published 2019-03-19 by SAE International in United States
The demand for higher production rates of large parts in aircraft industry requests more flexible manufacturing solutions. High-accurate mobile robots show a promising alternative in comparison with high-invest special machines. With mobile robot-based solutions processes can be executed simultaneously which increases the productivity significantly. However, the freedom of mobility results in insufficient positioning accuracy of these machines. Hence fast and accurate referencing processes are required to achieve cost-effectiveness and meet production tolerances. In this publication a Mobile Laser Tracker (MLT) system and a holistic approach for future manufacturing systems with mobile robots will be introduced and discussed.
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Demonstration of Transformable Manufacturing Systems through the Evolvable Assembly Systems Project

University of Nottingham-David Sanderson, Alison Turner, Emma Shires, Jack Chaplin, Svetan Ratchev
Published 2019-03-19 by SAE International in United States
Evolvable Assembly Systems is a five year UK research council funded project into flexible and reconfigurable manufacturing systems. The principal goal of the research programme has been to define and validate the vision and support architecture, theoretical models, methods and algorithms for Evolvable Assembly Systems as a new platform for open, adaptable, context-aware and cost effective production. The project is now coming to a close; the concepts developed during the project have been implemented on a variety of demonstrators across a number of manufacturing domains including automotive and aerospace assembly. This paper will show the progression of demonstrators and applications as they increase in complexity, specifically focussing on the Future Automated Aerospace Assembly Phase 1 technology demonstrator (FA3D). The FA3D Phase 1 demonstrated automated assembly of aerospace products using precision robotic processes in conjunction with low-cost reconfigurable fixturing supported by large volume metrology. This was underpinned by novel agent-based control for transformable batch-size-of-one production. The paper will conclude by introducing Phase 2 of the Future Automated Aerospace Assembly Demonstrator - currently in development - that…
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Aircraft Deicing Vehicle - Self-Propelled

G-12E Equipment Committee
  • Aerospace Standard
  • ARP1971D
  • Current
Published 2019-02-13 by SAE International in United States
This SAE Aerospace Recommended Practice (ARP) covers requirements for a self-propelled, boom-type aerial device, equipped with an aircraft deicing/anti-icing fluid spraying system. The unit shall be highly maneuverable for deicing all exterior surfaces of commercial aircraft, of sizes agreed upon between purchaser and manufacturer, in accordance with AS6285. The vehicle shall be suitable for day and night operations.
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Digital Transformation for a CONNECTED ENTERPRISE

  • Magazine Article
  • TBMG-33019
Published 2018-10-01 by Tech Briefs Media Group in United States

Manufacturers around the world are grappling with the challenge of continuous innovation in the face of increasing complexity. In aerospace and defense (A&D), complexity is nothing new, but digital transformation to become a more connected enterprise that allows programs to run independently while achieving enterprise-wide processes remains an elusive goal. Today, organizations around the world are rethinking their strategies and turning to more open and agile approaches to create a connected enterprise that can enable faster innovation.


VinFast: Vietnam's first car company has big ambitions

Automotive Engineering: October 2018

Paul A. Eisenstein
  • Magazine Article
  • 18AUTP10_06
Published 2018-10-01 by SAE International in United States

Vietnam's economy is expected to grow as much as 7% annually in the near-term, and with a population of around 90 million, its automotive market is expected to surge rapidly from the current 300,000 annual pace. And where sales are dominated by brands like Toyota and Hyundai, Pham Nhat Vuong is determined to grab a share for his new company, VinFast, which aims to become Vietnam's first major carmaker.

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Principles of Laser Scanning Confocal Microscopes

  • Magazine Article
  • TBMG-29736
Published 2018-07-01 by Tech Briefs Media Group in United States

Today’s high-resolution laser scanning confocal microscopes (LSCM), also referred to simply as laser scanning microscopes, are powerful high-magnification surface metrology instruments with a vast application range, from simple metal surfaces to high-end electronic components. Software capabilities make this possible by taking high-resolution surface images and producing accurate, repeatable nanometer measurements. This article will discuss the basic functions of a laser scanning microscope, as well as the software capabilities that enable manipulation of the imaging aspects after hardware acquisition.


Data, Data Everywhere: Why the Medical Device Industry Must Embrace the Fourth Industrial Revolution

  • Magazine Article
  • TBMG-29115
Published 2018-06-01 by Tech Briefs Media Group in United States

We live in a fast-changing world that is delivering rapid advances in technology and greater consumer expectations. Along with changing healthcare reimbursement models, which are moving to support improved patient outcomes, there is increasing demand for personalized products and precision medicines requiring increased complexity in medical devices. This is spawning a new era of digital and mobile medical devices and healthcare techniques, which are using the Internet of Medical Things (IoMT) to connect technology, people, and processes. These include innovations such as lab on a chip and remote monitoring of patient testing devices. One company has even introduced the concept of cloth-based diagnostic monitoring technology; using undergarments to remotely monitor cardiac performance. To respond to these modern demands and to survive in the future marketplace, medical device manufacturers need to be more agile, innovate more quickly, and adapt to remain competitive.