Disassembly 4.0/5.0 in the automotive industry
Awareness of global warming has put ecology at the heart of the conversation. This has led to the emergence of a new sector in the automotive industry—disassembly. The École de technologie supérieure research team proposes an overview of this process.
image: The challenges of dissembly view more
Credit: ÉTS
Disassembly is a relatively new practice, and much less developed than automobile production. In industrialized countries, most current dismantling facilities function like a workshop. However, an increase in car production and the evolution of legislation require improvements to the process. For instance, since 2006, the European Union requires that 85% of the car weight be recycled and since 2015, this requirement has increased to 95%.
The need to dismantle and recycle a larger number of cars raises several issues. Such issues correspond to the sustainable business model described by Ahner et al. (2022), advocating reconciling the economic, social and ecological dimensions.
The first challenge is to establish a partnership between production and dismantling industries (Kazmierczak et al., 2004), and to set up a well-thought-out design for disassembly at the outset. The second is to develop new tools for dismantling (Kazmierczak et al., 2004), and the last issue is environmental. The automotive industry must become more ecological. This means that a larger proportion of the car must be recycled or recovered and that the process must be as environmentally friendly as possible.
This article identifies different ways to improve automotive disassembly while addressing these challenges. The improvements are intended to move current disassembly towards a disassembly 4.0/5.0 more respectful of workers and the environment.
Development Paths
Automotive disassembly, in workshop mode, could be more efficient and it involves occupational health and safety risks, including ergonomic risks, for mechanics. Upcoming developments must meet expectations and future demand.
To achieve this, it is essential to first reduce non-value-added work time (Kazmierczak et al., 2007). This can be achieved by optimizing the disassembly process, but also by improving communication between manufacturers and disassemblers. This would bring the standardization of parts and the development of planned disassembly concepts. The proportion of destructive disassembly would then decrease and, at the same time, the recovery rate of parts would increase. The automotive industry would be greener and compliance with new environmental standards would be easier.
Second, technology is a powerful and essential tool to becoming a 4.0/5.0 disassembly industry. Various articles have highlighted the interest in exoskeletons. These would help reduce physical exertion and fatigue experienced by mechanics (Huysamen et al., 2018). Wearing connected glasses could reduce human error as well as unproductive comings and goings of mechanics (Averbukh et al., 2020). They would have a direct impact on production. Finally, the advantage of human/robot collaboration is twofold—optimizing production and entrusting repetitive tasks to the robots (Wegener et al., 2015).
Full automation is not yet achievable (Wegener et al., 2015) in automotive disassembly. The proposed improvements allow humans to be supported in their tasks without replacing them. They remain in control of production and technology, for now, is a tool to improve performance and well-being at work. The work of humans is still essential for many stages of disassembly, which cannot be done otherwise.
About the authors
Mathieu Grange is a M.Eng. student in Aerospace Engineering at École de technologie supérieure (ÉTS). His application project focused on 4.0/5.0 disassembly.
Sylvie Nadeau is full professor and director of the master’s program in Occupational Health and Safety Risk Engineering at the École de technologie supérieure (ÉTS). She is also head of the Applied Human Factors lab.
Lucas Hof is a professor in the Department of Mechanical Engineering at École de technologie supérieure ÉTS. His research interests include advanced and circular manufacturing, micromachining, mechatronics and electrochemical manufacturing.
About ÉTS
École de technologie supérieure is one of ten constituents of the Université du Québec network. It trains engineers and researchers who are recognized for their practical and innovative approach, the development of new technologies and their skill at transferring their knowledge to companies. Almost one-quarter of all engineers in Québec graduated from ÉTS, which boasts 11,000 students, including 2,650 at the graduate and post-graduate level. ÉTS specializes in applied training and research in engineering, and maintains a unique partnership with the business sector and with industry. For more information, please visit etsmtl.ca.
References
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