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Loukas Rentzos

Bio: Loukas Rentzos is an academic researcher from University of Patras. The author has contributed to research in topics: Augmented reality & Virtual reality. The author has an hindex of 12, co-authored 16 publications receiving 510 citations.

Papers
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Journal ArticleDOI
TL;DR: The study presented, comprises an assembly sequence generation algorithm, for the creation of assembly sequences and steps, carried out by engineers with the use of CAD data and any additional input concerning the product.

103 citations

Journal ArticleDOI
TL;DR: The Teaching Factory paradigm as discussed by the authors aims to align manufacturing teaching and training to the needs of modern industrial practice by providing a real-life environment for students and research engineers to develop their skills and comprehend the challenges involved in everyday industrial practice.

95 citations

Journal ArticleDOI
TL;DR: In this paper, the authors present the evolution of the Teaching Factory concept and its application to a real-life pilot, where the current status of the paradigm is tested on a real life pilot, between a university and a construction equipment factory.

81 citations

Journal ArticleDOI
TL;DR: In this paper, a dynamic job rotation tool is discussed that allows for the efficient allocation of assembly tasks to suitable operators, at any point of time, leading to more balanced workload distribution and thus, achieving "dynamic line balancing".
Abstract: The job rotation enables production systems to cope with the fluctuating market demand by exploiting the benefits of flexible workforce. It provides employees with a more engaging working environment, resulting in far less monotonous and repetitive tasks. A dynamic job rotation tool is discussed that allows for the efficient allocation of assembly tasks to suitable operators, at any point of time, leading to more balanced workload distribution and thus, achieving ‘dynamic line balancing’. A hierarchical approach to multiple criteria and decision making algorithms is used for the implementation of the tool. The tool generates alternative rotation schedules and evaluates them against predefined criteria.

56 citations

Journal ArticleDOI
01 Jan 2013
TL;DR: This paper presents a semantic-based AR system used for the integration of the existing information and knowledge, available in CAD/PDM systems, for real-time support of the human operator in an automotive use-case.
Abstract: Augmented Reality (AR) can help close the gap between product development and manufacturing operation, mainly because of its ability to reuse and reproduce digital information and knowledge, while supporting assembly operators. This paper presents a semantic-based AR system used for the integration of the existing information and knowledge, available in CAD/PDM systems, for real-time support of the human operator. This study is supported by an algorithm used for the generation of the AR instructions based on the product and process semantics. The results are demonstrated in an automotive use-case.

50 citations


Cited by
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Journal ArticleDOI
TL;DR: The Industry 4.0 environment is scanned on this paper, describing the so-called enabling technologies and systems over the manufacturing environment.

586 citations

Journal ArticleDOI
TL;DR: A review of the state of the art research in the areas of assembly system design, planning and operations in the presence of product variety is presented in this article, where methods for assembly representation, sequence generation and assembly line balancing are reviewed and summarized.

479 citations

Journal ArticleDOI
TL;DR: In this article, emerging technologies in the automotive assembly are discussed, along with techniques used in the vehicle assembly plants, and concepts integrating various new technologies into supporting both automated and human-based assembly operations are presented and discussed versus this identified inability for mass customization.
Abstract: In this paper, emerging technologies in the automotive assembly are discussed, along with techniques used in the vehicle assembly plants. The discussion involves technologies directly dealing with assembly processes such as handling, joining, human resources etc. as well as with supporting systems, mainly the information technologies. An overview of the existing technologies is provided. The assembly systems are unable to cope with the requirements of mass customization and need to be enriched with new technologies for a higher flexibility potential. Concepts integrating various new technologies into supporting both automated and human based assembly operations are presented and discussed versus this identified inability for mass customization. Future assembly plants need to utilize flexibility systematically, both for the system design and its operation. For this purpose, a close loop approach is discussed.

364 citations

Journal ArticleDOI
TL;DR: How the urge towards digitalisation of manufacturing in the context of the 4th Industrial revolution has shaped simulation in the design and operation of manufacturing systems is described and the new approaches that have arisen in the literature are reviewed.
Abstract: As the industrial requirements change at a rapid pace due to the drastic evolution of technology, the necessity of quickly investigating potential system alternatives towards a more efficient manuf...

362 citations

Journal ArticleDOI
TL;DR: In this article, the authors provide a concise overview of the technical features, characteristics and broad range of applications of AR-based assembly systems published between 1990 and 2015, and they are considered as recent pertinent works which will be discussed in detail.
Abstract: In the past two decades, augmented reality (AR) has received a growing amount of attention by researchers in the manufacturing technology community, because AR can be applied to address a wide range of problems throughout the assembly phase in the lifecycle of a product, e.g., planning, design, ergonomics assessment, operation guidance and training. However, to the best of authors’ knowledge, there has not been any comprehensive review of AR-based assembly systems. This paper aims to provide a concise overview of the technical features, characteristics and broad range of applications of AR-based assembly systems published between 1990 and 2015. Among these selected articles, two thirds of them were published between 2005 and 2015, and they are considered as recent pertinent works which will be discussed in detail. In addition, the current limitation factors and future trends in the development will also be discussed.

352 citations