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All Outputs (86)

Measurement assisted assembly for high accuracy aerospace manufacturing (2018)
Conference Proceeding
Drouot, A., Zhao, R., Irving, L., Sanderson, D., & Ratchev, S. (2018). Measurement assisted assembly for high accuracy aerospace manufacturing.

Measurement Assisted Assembly is a key concept for the modernisation of aerospace assembly processes, i.e. improving their efficiency while reducing the manufacturing costs. This concept suggests a paradigm shift in the assembly of high-complexity pr... Read More about Measurement assisted assembly for high accuracy aerospace manufacturing.

Common shared system model for evolvable assembly systems (2018)
Conference Proceeding
Sanderson, D., Chaplin, J., & Ratchev, S. (2018). Common shared system model for evolvable assembly systems.

A vital aspect of distributed control in an adaptable production system is coherence between each system resource. The Evolvable Assembly Systems project addresses this challenge using a common shared system model. This paper provides an overview of... Read More about Common shared system model for evolvable assembly systems.

Functional modelling in evolvable assembly systems (2018)
Conference Proceeding
Sanderson, D., Chaplin, J. C., & Ratchev, S. (2018). Functional modelling in evolvable assembly systems.

The design and reconfiguration of adaptive production systems is a key driver in modern advanced manufacturing. We summarise the use of an ap-proach from the field of functional modelling to capture the function, behaviour, and structure of a system.... Read More about Functional modelling in evolvable assembly systems.

Process Plan Controllers for Non-Deterministic Manufacturing Systems (2017)
Conference Proceeding
Felli, P., De Silva, L., Logan, B., & Ratchev, S. (2017). Process Plan Controllers for Non-Deterministic Manufacturing Systems. In Proceedings of the Twenty-Sixth International Joint Conference on Artificial Intelligence (1023-1030). https://doi.org/10.24963/ijcai.2017/142

Determining the most appropriate means of producing a given product, i.e., which manufacturing and assembly tasks need to be performed in which order and how, is termed process planning. In process planning, abstract manufacturing tasks in a process... Read More about Process Plan Controllers for Non-Deterministic Manufacturing Systems.

Toward process control from formal models of transformable manufacturing systems (2017)
Journal Article
Bakker, O. J., Chaplin, J. C., de Silva, L., Felli, P., Sanderson, D., Logan, B., & Ratchev, S. (2018). Toward process control from formal models of transformable manufacturing systems. Procedia CIRP, 63, 521-526. https://doi.org/10.1016/j.procir.2017.03.159

The automation and flexibility of production systems is a key step towards improved profitability and competitiveness in high labour cost areas, when producing high-complexity, low-volume products. In the Evolvable Assembly Systems (EAS) project, the... Read More about Toward process control from formal models of transformable manufacturing systems.

Variation analysis of automated wing box assembly (2017)
Journal Article
Bakker, O. J., Popov, A. A., & Ratchev, S. M. (2017). Variation analysis of automated wing box assembly. Procedia CIRP, 69, 406-411. https://doi.org/10.1016/j.procir.2017.02.034

Manufacturing process variability is a major issue of concern in high value industries. Manufacturing small batches and in some cases batches of one is a very expensive process with specific requirements for manufacturing operations, tooling and fixt... Read More about Variation analysis of automated wing box assembly.

Synthesising industry-standard manufacturing process controllers (2017)
Conference Proceeding
de Silva, L., Felli, P., Chaplin, J. C., Logan, B., Sanderson, D., & Ratchev, S. (2017). Synthesising industry-standard manufacturing process controllers. In Proceedings of the 16th International Conference on Autonomous Agents and Multiagent Systems (AAMAS 2017) (1811-1813)

Flexible robot sealant dispensing cell using RGB-D sensor and off-line programming (2017)
Journal Article
Maiolino, P., Woolley, R., Branson, D. T., Benardos, P., Popov, A. A., & Ratchev, S. (in press). Flexible robot sealant dispensing cell using RGB-D sensor and off-line programming. Robotics and Computer-Integrated Manufacturing, 48, https://doi.org/10.1016/j.rcim.2017.04.004

In aerospace manufacture the accurate and robust application of sealant is an integral and challenging part of the manufacturing process that is still performed by human operator. Automation of this process is difficult and not cost effective due to... Read More about Flexible robot sealant dispensing cell using RGB-D sensor and off-line programming.

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.

Realisability of production recipes (2016)
Conference Proceeding
de Silva, L., Felli, P., Chaplin, J. C., Logan, B., Sanderson, D., & Ratchev, S. (2016). Realisability of production recipes. In ECAI 2016 - 22nd European Conference on Artificial Intelligence (1449-1457). https://doi.org/10.3233/978-1-61499-672-9-1449

There is a rising demand for customised products with a high degree of complexity. To meet these demands, manufacturing lines are increasingly becoming autonomous, networked, and intelligent, with production lines being virtualised into a manufacturi... Read More about Realisability of production recipes.

Development of in-situ monitoring systems for the thermoforming of pre-preg composite laminates (2016)
Conference Proceeding
Land, P., Branson, D. T., Crossley, R. J., & Ratchev, S. (2016). Development of in-situ monitoring systems for the thermoforming of pre-preg composite laminates.

Recent developments in automated composite manufacturing technologies, such as Automated Fibre Placement, AFP, and Automated Tape Layup, ATL, have enabled larger components to be produced efficiently, leading to an increased use of prepreg composites... Read More about Development of in-situ monitoring systems for the thermoforming of pre-preg composite laminates.

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.

Variation Aware Assembly Systems for Aircraft Wings (2016)
Conference Proceeding
Vaughan, D. R., Bakker, O. J., Branson, D. T., & Ratchev, S. (2016). Variation Aware Assembly Systems for Aircraft Wings. In SAE Technical Paper Series. https://doi.org/10.4271/2016-01-2106

Aircraft manufacturers desire to increase production to keep up with anticipated demand. To achieve this, the aerospace industry requires a significant increase in the manufacturing and assembly performance to reach required output levels. This work... Read More about Variation Aware Assembly Systems for Aircraft Wings.

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.

Design requirements for effective hybrid decision making with Evolvable Assembly Systems (2016)
Conference Proceeding
Golightly, D., Sanderson, D., Holmes, P., Ratchev, S., & Sharples, S. (2016). Design requirements for effective hybrid decision making with Evolvable Assembly Systems. In ECCE '16: Proceedings of the European Conference on Cognitive Ergonomics. https://doi.org/10.1145/2970930.2970949

This paper examines 10 challenges for making automation a team player in the context of Evolvable Assembly Systems (EAS) with the aim of delivering requirements for effective hybrid human-automation decision making. Specific decision making use cases... Read More about Design requirements for effective hybrid decision making with Evolvable Assembly Systems.

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.

A decision support methodology for embodiment design and process chain selection for hybrid manufacturing platforms (2016)
Journal Article
Gleadal, A., Vladov, N., Segal, J., Ratchev, S., Plasch, M., Kimmig, D., & Dickerhof, M. (2016). A decision support methodology for embodiment design and process chain selection for hybrid manufacturing platforms. International Journal of Advanced Manufacturing Technology, 87(1-4), 553-569. doi:10.1007/s00170-016-8514-7

This paper presents a methodology for the transformation of a product concept into a detailed design and manufacturing process chain for hybrid manufacturing platforms. Hybrid platforms offer new capabilities and opportunities for product design. How... Read More about A decision support methodology for embodiment design and process chain selection for hybrid manufacturing platforms.

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.

Apparent beam size definition of focused ion beams based on scanning electron microscopy images of nanodots (2015)
Journal Article
Vladov, N., Segal, J., & Ratchev, S. (2015). Apparent beam size definition of focused ion beams based on scanning electron microscopy images of nanodots. Journal of Vacuum Science and Technology B Microelectronics and Nanometer Structures, 33, Article 041803. https://doi.org/10.1116/1.4926388

In this paper the new term apparent beam size of Focused Ion Beam (FIB) is introduced and an original method of its evaluation is demonstrated. Traditional methods of measuring the beam size, like the knife edge method, provide information about the... Read More about Apparent beam size definition of focused ion beams based on scanning electron microscopy images of nanodots.