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Wu, Chengwei (author), Yao, Weiran (author), Luo, Wensheng (author), Pan, W. (author), Sun, Guanghui (author), Xie, Hui (author), Wu, Ligang (author)
The problem of learning-based control for robots has been extensively studied, whereas the security issue under malicious adversaries has not been paid much attention to. Malicious adversaries can invade intelligent devices and communication networks used in robots, causing incidents, achieving illegal objectives, and even injuring people....
journal article 2023
document
Shao, X. (author), Yao, Weiran (author), Li, Xiaolei (author), Sun, Guanghui (author), Wu, Ligang (author)
This letter investigates the direct trajectory optimization of the free-floating space manipulator (FFSM). The main purpose is to plan the joint space trajectories to reduce the spacecraft motion due to the joint rotation during the FFSM performing tasks. To improve the calculation efficiency, the adaptive Radau pseudospectral method (A-RPM)...
journal article 2022
document
Wu, Xiao Min (author), Xie, Fei (author), Yao, Yong Lin (author), Sun, Yue (author), Hua, Zhong Sheng (author), Zhao, Zhuo (author), Yang, Y. (author)
In order to take full advantage of the secondary resources, in this paper, we reported a template-free process to prepare porous Co microfibers from spent lithium-ion batteries (LIBs). First, the waste LiCoO<sub>2</sub> powders were leached by oxalic acid at a suitable temperature, and rod-like cobalt oxalate powders were obtained. Second,...
journal article 2022
document
Wu, Chengwei (author), Yao, Weiran (author), Pan, W. (author), Sun, Guanghui (author), Liu, Jianxing (author), Wu, Ligang (author)
This article investigates the secure control problem for cyber-physical systems when the malicious data are injected into the cyber realm, which directly connects to the actuators. Based on moving target defense (MTD) and reinforcement learning, we propose a novel proactive and reactive defense control scheme. First, the system (A,B) is...
journal article 2021
document
Yao, Liaojun (author), Cui, Hao (author), Sun, Yi (author), Guo, Licheng (author), Chen, Xiangming (author), Zhao, Meiying (author), Alderliesten, R.C. (author)
The influence of fibre bridging on delamination failure in multidirectional composite laminates with different thickness scales is characterized, and the dependence of fibre bridging significance on laminate thickness as well as loading regime is investigated in this paper. Both quasi-static and fatigue resistance curves (R-curve) are...
journal article 2018
document
Yao, L. (author), Cui, Hao (author), Alderliesten, R.C. (author), Sun, Yi (author), Guo, Licheng (author)
This paper provides an investigation on thickness effects on fibre-bridged fatigue delamination growth (FDG) in composite laminates. A modified Paris relation was employed to interpret experimental fatigue data. The results clearly demonstrated that both thickness and fibre bridging had negligible effects on FDG behaviors. Both energy...
journal article 2018
document
Yao, Liaojun (author), Sun, Yi (author), Guo, Licheng (author), Lyu, Xiuqi (author), Zhao, Meiying (author), Jia, Liyong (author), Alderliesten, R.C. (author), Benedictus, R. (author)
Fatigue delamination in multidirectional composite laminates was experimentally investigated in present study. Both the Paris relation and a modified Paris relation (with a new similitude parameter) were employed to interpret fatigue delamination with significant fibre bridging. The results clearly demonstrated that fatigue delamination was...
journal article 2018
document
Yao, L. (author), Sun, Y. (author), Alderliesten, R.C. (author), Benedictus, R. (author), Zhao, M (author)
Fibre bridging can significantly enhance delamination resistance making the use of a single Paris resistance curve to determine fatigue crack growth insufficient. An empirical Paris-type relation has been developed in a previous study to take fibre bridging into account in fatigue delamination growth. This relation was developed by correlating...
journal article 2017
document
Yao, L. (author), Sun, Y. (author), Zhao, M (author), Alderliesten, R.C. (author), Benedictus, R. (author)
This paper aims to investigate stress ratio effect on fibre bridging significance in mode I fatigue delamination growth of composite materials. Fatigue resistance curves (R-curves) of different stress ratios are determined and compared with the quasi-static R-curve. The fatigue R-curve of a high stress ratio is similar to the quasi-static...
journal article 2017
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