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All Outputs (35)

Implementing large-scale Aerospace Assembly 4.0 demonstration systems? (2020)
Journal Article
Sanderson, D., Turner, A., Shires, E., Chaplin, J. C., & Ratchev, S. (2020). Implementing large-scale Aerospace Assembly 4.0 demonstration systems?. IFAC papers online, 53(2), 10267-10274. https://doi.org/10.1016/j.ifacol.2020.12.2759

The Future Automated Aerospace Assembly phase 1 technology Demonstrator (FA3D) was commissioned at the University of Nottingham and used to demonstrate concepts from the EPSRC Evolvable Assembly Systems project in specific industrial use cases. A num... Read More about Implementing large-scale Aerospace Assembly 4.0 demonstration systems?.

Tool Wear Classification using Time Series Imaging and Deep Learning (2019)
Journal Article
Martínez-Arellano, G., Terrazas, G., & Ratchev, S. (2019). Tool Wear Classification using Time Series Imaging and Deep Learning. International Journal of Advanced Manufacturing Technology, 104(9-12), 3647–3662. https://doi.org/10.1007/s00170-019-04090-6

Tool Condition Monitoring (TCM) has become essential to achieve high quality machining as well as cost-effective production. Identification of the cutting tool state during machining before it reaches its failure stage is critical. This paper present... Read More about Tool Wear Classification using Time Series Imaging and Deep Learning.

Demonstration of Transformable Manufacturing Systems through the Evolvable Assembly Systems Project (2019)
Journal Article
Sanderson, D., Turner, A., Shires, E., Chaplin, J., & Ratchev, S. (2019). Demonstration of Transformable Manufacturing Systems through the Evolvable Assembly Systems Project. SAE Technical Papers, Article 2019-01-1363. https://doi.org/10.4271/2019-01-1363

© 2019 SAE International. All Rights Reserved. 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 va... Read More about Demonstration of Transformable Manufacturing Systems through the Evolvable Assembly Systems Project.

Trade-off study of a variation aware determinate wing assembly against a traditional assembly strategy (2018)
Journal Article
Bacharoudis, K., Bakker, O. J., Popov, A., & Ratchev, S. (2018). Trade-off study of a variation aware determinate wing assembly against a traditional assembly strategy. MATEC Web of Conferences, 233, Article 00008. https://doi.org/10.1051/matecconf/201823300008

The present study introduces a trade-off framework to evaluate assembly concepts to make informed decisions for aircraft wing structures. This includes (1) the design of the assembly concepts and the estimation of the probability of achieving specifi... Read More about Trade-off study of a variation aware determinate wing assembly against a traditional assembly strategy.

Online Tool Wear Classification during Dry Machining Using Real Time Cutting Force Measurements and a CNN Approach (2018)
Journal Article
Terrazas, G., Martínez-Arellano, G., Benardos, P., & Ratchev, S. (2018). Online Tool Wear Classification during Dry Machining Using Real Time Cutting Force Measurements and a CNN Approach. Journal of Manufacturing and Materials Processing, 2(4), Article 72. https://doi.org/10.3390/jmmp2040072

The new generation of ICT solutions applied to the monitoring, adaptation, simulation and optimisation of factories are key enabling technologies for a new level of manufacturing capability and adaptability in the context of Industry 4.0. Given the a... Read More about Online Tool Wear Classification during Dry Machining Using Real Time Cutting Force Measurements and a CNN Approach.

A Comparison of Centralised and Decentralised Scheduling Methods Using a Simple Benchmark System (2018)
Journal Article
Tochev, E., Pfifer, H., & Ratchev, S. (2018). A Comparison of Centralised and Decentralised Scheduling Methods Using a Simple Benchmark System. IFAC papers online, 51(11), 1287-1292. https://doi.org/10.1016/j.ifacol.2018.08.355

This paper is intended to provide a comparison of a centralised scheduling system, a simple Multi-Agent System (MAS), and a Mixed Integer Linear Programming (MILP) formulation. The systems are tested on a simulation of a small scale flexible job shop... Read More about A Comparison of Centralised and Decentralised Scheduling Methods Using a Simple Benchmark System.

Redesign methodology for mechanical assembly (2017)
Journal Article
El-Nounu, A., Popov, A., & Ratchev, S. (in press). Redesign methodology for mechanical assembly. Research in Engineering Design, https://doi.org/10.1007/s00163-017-0255-6

Design for assembly is the concept of carrying out critical thought early in the design stage to create assembly easement at the production stage. In the aerospace industry, products have very long lives, frequently being optimised rather than introd... Read More about Redesign methodology for mechanical assembly.

A multi-agent framework for capability-based reconfiguration of industrial assembly systems (2016)
Journal Article
Antzoulatos, N., Castro, E., de Silva, L., Rocha, A. D., Ratchev, S., & Barata, J. (in press). A multi-agent framework for capability-based reconfiguration of industrial assembly systems. International Journal of Production Research, https://doi.org/10.1080/00207543.2016.1243268

Rapidly changing market requirements and shorter product lifecycles demand assembly systems that are able to cope with frequently changing resources, resource capabilities and product specifications. This paper presents a multi-agent framework that c... Read More about A multi-agent framework for capability-based reconfiguration of industrial assembly systems.

Evaluation of control methods for thermal roll forming of aerospace composite materials (2016)
Journal Article
Land, P., De Sousa, L., Ratchev, S., Branson, D. T., Brookes, H., & Wright, J. (2016). Evaluation of control methods for thermal roll forming of aerospace composite materials. SAE International Journal of Aerospace, 9(2), https://doi.org/10.4271/2016-01-2118

With increased demand for composite materials in the aerospace sector there is a requirement for the development of manufacturing processes that enable larger and more complex geometries, whilst ensuring that the functionality and specific properties... Read More about Evaluation of control methods for thermal roll forming of aerospace composite materials.

Manufacturing in the cloud: a human factors perspective (2016)
Journal Article
Golightly, D., Sharples, S., Patel, H., & Ratchev, S. (2016). Manufacturing in the cloud: a human factors perspective. International Journal of Industrial Ergonomics, 55, 12-21

Cloud manufacturing adopts a cloud computing paradigm as the basis for delivering shared, on-demand manufacturing services. The result is customer-centric supply chains that can be configured for cost, quality, speed and customisation. While the tech... Read More about Manufacturing in the cloud: a human factors perspective.

Automated experience-based learning for plug and produce assembly systems (2016)
Journal Article
Scrimeri, D., Antzoulatos, N., Castro, E., & Ratchev, S. M. (2017). Automated experience-based learning for plug and produce assembly systems. International Journal of Production Research, 55(13), 3674-3685. https://doi.org/10.1080/00207543.2016.1207817

This paper presents a self-learning technique for adapting modular automated assembly systems. The technique consists of automatically analysing sensor data and acquiring experience on the changes made on an assembly system to cope with new productio... Read More about Automated experience-based learning for plug and produce assembly systems.

Technology review of thermal forming techniques for use in composite component manufacture (2015)
Journal Article
Land, P., Crossley, R., Branson, D. T., & Ratchev, S. (2016). Technology review of thermal forming techniques for use in composite component manufacture. SAE International Journal of Aerospace, 9(1), https://doi.org/10.4271/2015-01-2610

There is a growing demand for composites to be utilised in the production of large-scale components within the aerospace industry. In particular the demand to increase production rates indicates that traditional manual methods are no longer sufficien... Read More about Technology review of thermal forming techniques for use in composite component manufacture.

Implementing Determinate Assembly for the Leading Edge Sub-Assembly of Aircraft Wing Manufacture (2014)
Journal Article
Irving, L., Ratchev, S., Popov, A., & Rafla, M. (2014). Implementing Determinate Assembly for the Leading Edge Sub-Assembly of Aircraft Wing Manufacture. SAE International Journal of Aerospace, 7(2), 246-254. https://doi.org/10.4271/2014-01-2252

Copyright © 2014 SAE International. The replacement for the current single-aisle aircraft will need to be manufactured at a rate significantly higher that of current production. One way that production rate can be increased is by reducing the process... Read More about Implementing Determinate Assembly for the Leading Edge Sub-Assembly of Aircraft Wing Manufacture.

Learning and reuse of engineering ramp-up strategies for modular assembly systems (2013)
Journal Article
Scrimieri, D., Oates, R. F., & Ratchev, S. M. (2015). Learning and reuse of engineering ramp-up strategies for modular assembly systems. Journal of Intelligent Manufacturing, 26(6), 1063-1076. https://doi.org/10.1007/s10845-013-0839-6

We present a decision-support framework for speeding up the ramp-up of modular assembly systems by learning from past experience. Bringing an assembly system to the expected level of productivity requires engineers performing mechanical adjustments a... Read More about Learning and reuse of engineering ramp-up strategies for modular assembly systems.