Yongjing Wang

Yongjing Wang
University of Birmingham · School of Engineering

BEng (1st) PhD MIET CEng FHEA

About

44
Publications
14,274
Reads
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314
Citations
Additional affiliations
May 2020 - June 2020
University of Birmingham
Position
  • Lecturer
October 2016 - May 2020
University of Birmingham
Position
  • Research Associate
Education
September 2013 - September 2016
University of Birmingham
Field of study
  • Mechanical Engineering
September 2011 - July 2013
University of Birmingham
Field of study
  • Electronic and Electrical Engineering
September 2009 - July 2011
Harbin Institute of Technology
Field of study
  • Automatic Control

Publications

Publications (44)
Article
Full-text available
Self-healing composites are composite materials capable of automatic recovery when damaged. They are inspired by biological systems such as the human skin which are naturally able to heal themselves. This paper reviews work on self-healing composites with a focus on capsule-based and vascular healing systems. Complementing previous survey articles,...
Article
Remanufacturing is the rebuilding of a product to specifications of the original manufactured product using a combination of directly reused, repaired and new parts. Disassembly, the first and arguably most important process in remanufacturing, tends to be labour-intensive due to complexities in the conditions of end-of-life products returned for r...
Article
A key step in remanufacturing is disassembly of the "core" or the returned product to be remanufactured. Disassembly sequence planning is challenging due to uncertainties in the conditions of the cores. Rust, corrosion, deformation, and missing parts may require disassembly plans to be changed and adapted frequently. Conventional industrial automat...
Article
Robotic disassembly sequence planning (DSP) is a research area that looks at the sequence of actions in the disassembly intending to achieve autonomous disassembly with high efficiency and low cost in remanufacturing and recycling applications. A piece of key input information being factored in DSP is the interference condition of a product, i.e.,...
Preprint
Full-text available
Materials with programmable conductivity and stiffness offer new design opportunities for next-generation engineered systems in soft robotics and wearable devices. However, existing approaches fail to harness variable electrical and mechanical properties synergistically, and lack the ability to self-respond to environmental changes. We report an el...
Conference Paper
Increasing attention has been paid to remanufacturing which plays an important role in environmental protection and circular economy. Disassembly is a key operation in remanufacturing, repair, and recycling. Several robotic disassembly developments have shown that the use of robots in disassembly is feasible; however, the programming of robots is u...
Article
Full-text available
The weaving welding process is a key method used to improve the welding quality in multi-layer and multi-pass welding processes using robots. However, the heat-input fluctuation in the weaving welding process restricts its development. In this paper, we developed a novel weaving welding control algorithm to maintain a constant weld heat input throu...
Article
Due to high stiffness and quick response, dual-drive feed machines (DDFMs) are widely used in many precision CNC machines. The tracking errors of the two feed drives directly determine the machines’ accuracy. The performance of the position accuracy can be easily affected by the difference in the friction dynamic characteristics of the two axes. Th...
Chapter
This chapter examines the balancing of robotic disassembly lines. It details the modelling of the line balancing problem and presents various models developed in recent years. The chapter also discusses the use of probability distributions and fuzzy numbers to account for uncertainties in task durations.
Chapter
This chapter discusses serial paced mixed-model disassembly line balancing with multi-robot workstations (MDLB-MR). The main difference between MDLB-MR and classic simple disassembly lines is the number of robots that can be allocated to each workstation. In MDLB-MR, a set of EOL products can be simultaneously disassembled and each product has its...
Chapter
The performance of an evolutionary algorithm in solving disassembly sequence planning or disassembly line balancing greatly depends on six parts: the evolutionary operator; encoding scheme; solution selection and update strategy; population initialisation; solution maintenance; and terminal condition. This chapter introduces classical single-object...
Chapter
This chapter discusses the need for component and subassembly detection for robotic disassembly and introduces a two-pointer detection strategy to find removable components and subassemblies online during disassembly. The strategy is shown to be quick and simple to use for disassembly sequence planning and replanning. Only an interference matrix is...
Chapter
Most disassembly optimisation problems start with designing a mathematical representation that can describe component relations. This chapter discusses and compares three major groups of component relation models: the matrix-based model, graph-based model and hybrid-based model.
Chapter
This chapter briefly explains remanufacturing and its motivation and introduces the main classes of optimisation problems in remanufacturing.
Chapter
Based on the detection strategy introduced in Chapter 4, a ternary Bees Algorithm is presented to provide a re-planning solution, combining the disassembly order and the direction of not only detachable components but also the removable subassemblies. The algorithm possesses the merits of both the original Bees Algorithm and greedy search. Although...
Chapter
This chapter discusses the prerequisites of robotic disassembly sequence planning as opposed to manual disassembly planning. Optimisation variables, objectives and constraints are summarised and modelled mathematically. Multiple disassembly operations with direction change and tool change, additional adjustment strategies, backup strategies, and hu...
Chapter
This chapter demonstrates the use of the model proposed in Chapter 6 and presents the solution of the robotic disassembly line balancing problem (DLBP) for benchmark cases using different optimisation algorithms. The best algorithms for large-scale multi-objective disassembly line balancing problems are shown to be NSGA-III and IBEA.
Chapter
This chapter gives an overview of robotic disassembly for remanufacturing. The general concept, characteristics and enablers of robotic disassembly are reviewed. The chapter also outlines a systematic workflow for designing robotic disassembly cells based on techniques for assembly cell design.
Chapter
Uncertainties in the end-of-life conditions of products make disassembly difficult to robotise. A key problem is that existing industrial automation techniques use pre-determined robotic processes which cannot deal with unforeseen failed disassembly operations. This chapter models the completion rate of a disassembly plan and introduces the concept...
Book
This book illustrates the main characteristics, challenges and optimisation requirements of robotic disassembly. It provides a comprehensive insight on two crucial optimisation problems in the areas of robotic disassembly through a group of unified mathematical models. The online and offline optimisation of the operational sequence to dismantle a p...
Article
Disassembly of end-of-life products is a common step in remanufacturing and recycling. Disassembly sequence planning is the process that automatically finds the optimal sequence of components being removed. A key element of disassembly sequence planning is a suitable mathematical representation that describes the interference of any two components...
Article
Disassembly is the first operation in the remanufacture, repair and recycling of products that have reached the end of their service life. Both productivity and flexibility should be considered when using robots to carry out disassembly due to the complexities associated with the products returned for remanufacturing. Human-robot collaboration is a...
Chapter
This article gives an overview of the area of smart composites, classifies the composite materials that have been developed for various applications into different types, outlines the pillars supporting smart composites development, summarizes the benefits of smart composites and briefly discusses future development trends.
Article
Full-text available
Carbon fibre–reinforced composites (CFRCs) are increasingly used in aeroplanes, satellites and offshore wind turbines. Access those systems for repair when the material is damaged may be difficult. Researchers have incorporated vascular systems containing healing agents into CFRCs, enabling them automatically to recover from delamination and debond...
Article
Full-text available
The drive at the center of gravity (DCG) principle has been adopted in computer numerical control (CNC) machines and industrial robots that require heavy-duty and quick feeds. Using this principle requires accurate corrections of positioning errors. Conventional error compensation methods may cause vibrations and unstable control performances due t...
Article
Disassembly is a core procedure in remanufacturing. Disassembly is currently carried out mainly by human operators. It is important to reduce the labor content of disassembly through automation, to make remanufacturing more economically attractive. Threaded fastener removal is one of the most difficult disassembly tasks to be fully automated. This...
Conference Paper
Full-text available
In remanufacturing, disassembly is the first step to dismantle the end-of-life products into components, which is labour-intensive due to the variability of returned products. Compared to manual disassembly, robotic disassembly is a promising technique to automate remanufacturing processes, which liberates the human labours from the repetitive disa...
Article
Human–robot collaborative disassembly is an approach designed to mitigate the effects of uncertainties associated with the condition of end-of-life products returned for remanufacturing. This flexible semi-autonomous approach can also handle unpredictability in the frequency and numbers of such returns as well as variance in the remanufacturing pro...
Article
Full-text available
When considered in two-dimensional space, a cylindrical peg being withdrawn from a clearance-fit hole can exhibit one of four contact states: no contact, one-point contact, two-point contact and line contact. Jamming and wedging can occur during the two-point contact. Effective control of the two-point contact region can significantly reduce resist...
Article
Full-text available
This paper presents a variable span multistep straightening process (VSMSP) to improve straightening accuracy and reduce the number of straightening steps for the multistep straightening of long linear guideways. It can also efficiently deal with the ineffectiveness caused by the single-step straightening process. VSMSP adopts a sequence of three-p...
Article
Full-text available
Using humans and robots working together to disassemble end-of-life (EoL) products so that they can be remanufactured enables catering for the effects of uncertainties in the condition of those products and unpredictability in remanufacturing operations. Collaborative robots are one of the key elements of Industry 4.0. This paper presents a strateg...
Chapter
Full-text available
Extrinsic self-healing composites are capable of automatic recovery when damaged, inspired by biological systems that are naturally able to heal themselves. Nanocomposites have been employed in the development of extrinsic self-healing composites to either improve the healing performances or reduce the adverse effects introduced by the embedded cap...
Article
Full-text available
Self-healing composites are able to restore their properties automatically. Impressive healing efficiencies can be achieved when conditions are favourable. On the other hand, healing might not be possible under adverse circumstances such as very low ambient temperature. Here, we report a structural composite able to maintain its temperature to prov...
Article
Full-text available
The paper considers key limitation of the feedback linearisation controller designed for nonlinear systems based on the imperfect nominal dynamics model and sensors. The model-reality differences cause signal leakages in the feedback linearised dynamics. As the leakages are the functions of the process variables, the resulting overall dynamics are...
Article
Full-text available
Laser directed patterning of carbon nanotubes-based buckypaper for producing a diffractive optical device is presented here. Using a laser ablation method the buckypaper was patterned into a binary Fresnel zone plate lens. Computational modelling was performed which revealed excellent focusing performance of the lens for both visible and THz radiat...

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Projects

Project (1)
Project
Create a whole brand-new system include the methodology and line of reproduction to make the remanufaturing automatic.