scholarly journals Assessment of assembly complexity of electronic units

2021 ◽  
pp. 54-60
Author(s):  
A. N. Tynynyka
Keyword(s):  
Human Factor ◽  
Complexity Analysis ◽  
Production Systems ◽  
Computer Experiments ◽  
Assembly Lines ◽  
Performance Quality ◽  
Harvesting Systems ◽  
Complexity Assessment ◽  
Crucial Part ◽  
Constant Growth

The article is devoted to the complexity assessment of harvesting systems. The author considers peculiarities of assembly lines as production systems and the reasons for the constant growth of their complexity. Complex assembly systems are expensive to implement, run, control and maintain, while their complexity affects performance, quality and reliability. Thus, when designing any assembly system, one must look for compromises between its future operation features, its cost and its complexity. To do this, you need to be able to quantify the complexity. This study made it possible to classify the methods of complexity analysis and propose a model that allows quantifying, to some extent, the complexity of the assembly of electronic units and can be used to work with complex multi-subject lines. The study considers the complexity indicators for the operator`s work. To numerically assess the complexity indicators, it is proposed to use the Likert scale. It is assumed that further research should take into account the following issues. The assembly should be designed with consideration of the human factor and the interrelation of technological operations, tools and ergonomics. This is due to the fact that in manual and semi-automatic workplaces, the human operator plays the crucial part. The connection between ergonomics and complexity must be established using the utility function, methods of fuzzy logic, and computer experiments with a test dummy.

scholarly journals Blockchain-Based Application for Certification Management

2020 ◽  
Vol 14 (4) ◽  
pp. 488-492
Author(s):  
Jovan Karamachoski ◽  
Ninoslav Marina ◽  
Pavel Taskov
Keyword(s):  
Supply Chain ◽  
Business Models ◽  
Human Factor ◽  
Computer Code ◽  
Chain Management ◽  
Practical Applications ◽  
Sustainable Technologies ◽  
Blockchain Technology ◽  
Smart Contract ◽  
Crucial Part

Blockchain technology will bring a disruption in plenty of industries and businesses. Recently it proved the robustness, immutability, auditability, in many crucial practical applications. The blockchain structure offers traceability of actions, alterations, alerts, which is an important property of a system needed for development of sustainable technologies. A crucial part of the blockchain technology regarding the optimization of the processes is the smart contract. It is a self-executable computer code, open and transparent, encoding the terms of a regular contract. It is able to automate the processes, thus decreasing the human-factor mistakes or counterfeits. In this paper, we are presenting the feasibility of the blockchain technology in the certification processes, with an application developed for university diploma certification. The example is easily transferable in other areas and business models such as logistics, supply chain management, or other segments where certification is essential.

Human factor policy testing in the sequencing of manual mixed model assembly lines

2004 ◽  
Vol 31 (1) ◽  
pp. 39-59 ◽  
Author(s):  
Giovanni Celano ◽  
Antonio Costa ◽  
Sergio Fichera ◽  
Giovanni Perrone
Keyword(s):  
Mixed Model ◽  
Human Factor ◽  
Assembly Lines ◽  
Mixed Model Assembly Lines ◽  
Policy Testing ◽  
Mixed Model Assembly

scholarly journals OEE measurement at the automotive semi-automatic assembly lines

2021 ◽  
Author(s):  
Peter Dobra ◽  
János Jósvai
Keyword(s):  
Literature Review ◽  
Automotive Industry ◽  
Performance Indicators ◽  
Key Performance Indicators ◽  
Automatic Assembly ◽  
Manufacturing Companies ◽  
Assembly Lines ◽  
Performance Quality

Manufacturing companies continuously evaluate their achieved performance based on different Key Performance Indicators (KPI). This article gives an overview about the OEE values. The study aims to provide practical OEE data of semi-automatic assembly lines used in the automotive industry. Its novelty is the revealed relationship between seat assembly lines and seat subassembly lines. Firstly, a literature review shows the scientific relevance and several cases are collected to increase OEE percentage. Secondly, the connection between chassis, tracks, recliner and mechanism assembly lines is described. Each part of OEE (availability, performance, quality) are analysed in terms of their impact.

scholarly journals The Complexities of the Automotive Industry: positive and negative feedbacks in production systems

2008 ◽  
Vol 33 (2) ◽  
Author(s):  
Dale Spencer ◽  
Niki Carlan
Keyword(s):  
Automotive Industry ◽  
Complexity Analysis ◽  
Production Systems ◽  
Health And Safety ◽  
Automotive Manufacturing ◽  
Safety Issues ◽  
Negative Feedback Loops ◽  
Local Plant ◽  
Automotive Production ◽  
Nous Examinons

Abstract (English): This paper utilizes complexity theory to analyze the implications of systemic changes that have occurred over the last 30 years in the automotive industry. We argue by dint of complexity analysis that the networked automotive production system characterized by just in time and lean production creates states far from equilibrium in individual parts manufacturers and assembler plants. Positive feedback creates system disturbances and adverse health and safety issues in the local plant environments. In addition, we examine four mechanisms that serve as negative feedback loops to absorb stresses in local plant environments and rectify health and safety related issues. This paper draws on thirty interviews with health and safety representatives at automotive manufacturing and assembly plants. Abstract (French): Ce papier utilise la théorie de complexité pour analyser les implications de changements systémiques qui se sont produits pendant les trente dernières années dans l'industrie automotrice. Nous soutenons, au moyen de l'analyse de complexité, que le système de production automoteur en réseau, caractérisé par la production juste à temps et mince, crée des états loin de l'équilibre dans les fabricants de parties individuels et les usines d'assembleur. Les rétroactions positives créent des dérangements dans le système qui causent des conditions défavorables de santé et sécurité dans les environs locaux de l’usine. En plus, nous examinons quatre mécanismes qui servent comme boucles de rétroactions négatives pour absorber ces tensions environnementales, et résoudre les problèmes de santé et sécurité. Ce papier est comprit de trente entretiens avec des représentants de santé et sécurité venant des usines fabricants et d’assemblage automotrices.

scholarly journals System Modeling and Real-Time Simulator for Highly Model-Mixed Assembly Systems

1999 ◽  
Vol 121 (2) ◽  
pp. 282-289 ◽  
Author(s):  
Chung-Hsien Kuo ◽  
Han-Pang Huang ◽  
Kuang C. Wei ◽  
Steve S. H. Tang
Keyword(s):  
Real Time ◽  
Automobile Industry ◽  
Production Systems ◽  
System Modeling ◽  
Rapid Change ◽  
Assembly Systems ◽  
Assembly Lines ◽  
Flexible Assembly ◽  
Automobile Assembly ◽  
Demand Fluctuations

In recent years, the automobile industry is facing more challenge than ever due to rapid model change requirements and demand fluctuations. Traditional fixed-type production systems are less capable in coping with the rapid change, while flexible production systems can better meet the requirement of low-volume production with model variations. Flexible machines integrated with model-mixed assembly lines form flexible assembly systems (FASs). In this paper, Colored Timed Petri Net (CTPN) is used to model a highly model-mixed automobile assembly system. Based on this CTPN model, a real-time simulator was developed along with different dispatching rules. Besides, the algorithm of balanced budget work standard (BWS) for a small batch production is developed for adjusting the loading balance of the operators in the highly model-mixed assembly lines. The simulator can be used as an effective tool for developing scheduling strategies.

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