Zobrazeno 1 - 10
of 80
pro vyhledávání: '"Hanling Mao"'
Publikováno v:
Results in Physics, Vol 42, Iss , Pp 105984- (2022)
Carburized case depth may be characterized by using nonlinear ultrasound. However, the excitation and receiving sensors are difficult to control in the same conditions in each experiment and the operation process is complicated, therefore, a speciali
Externí odkaz:
https://doaj.org/article/f9abac92b3894311ba747fa30da236b1
Publikováno v:
IEEE Access, Vol 9, Pp 7732-7742 (2021)
The time-frequency (TF) analysis (TFA) method is an effective tool for analyzing the time-variant features of non-stationary signals. Synchrosqueezing transform (SST) is a promising TFA method that has recently shown its usefulness in a wide range of
Externí odkaz:
https://doaj.org/article/0fffe44b4e404770afbbff5c64ac3431
Autor:
Feng Liu, Xinxin Li, Kexue Huang, Jiangshu Xiang, Wenxian Chen, Yanan Xiao, Hanling Mao, Zhenfeng Huang
Publikováno v:
IEEE Access, Vol 9, Pp 101030-101041 (2021)
The localized faults of bearings often produce a series of periodic impacts. However, how to extract these repetitive transients from the signals with strong noise interference is still a challenging problem. In this paper, a new method called collab
Externí odkaz:
https://doaj.org/article/b7b46d26b299465b9bde05fe1400ec35
Publikováno v:
Bulletin of the Polish Academy of Sciences: Technical Sciences, Vol 70, Iss 1 (2022)
Although the study of oscillatory motion has a long history, going back four centuries, it is still an active subject of scientific research. In this review paper prospective research directions in the field of mechanical vibrations were pointed out.
Externí odkaz:
https://doaj.org/article/33cc12be57cc4130b24e443a4e8078f7
Publikováno v:
Applied Sciences, Vol 13, Iss 3, p 1714 (2023)
Intelligent fault diagnosis is a hot research topic in machinery and equipment health monitoring. However, most intelligent fault diagnosis models have good performance in single fault mode, but poor performance in multiple fault modes. In real indus
Externí odkaz:
https://doaj.org/article/a6be2f1e036745b6b47cb3bcdc7ad2a8
Publikováno v:
Results in Physics, Vol 18, Iss , Pp 103173- (2020)
To improve the harvesting performance of bi-stable energy harvesters, this paper proposes a novel bi-stable piezoelectric energy harvester which consists of a piezoelectric cantilever beam with a tip magnet and a movable magnet. The movable magnet co
Externí odkaz:
https://doaj.org/article/d3fe32ed1a904e71902848ab2e521ee7
Publikováno v:
Shock and Vibration, Vol 2020 (2020)
The pillar porcelain insulator is an important protection device that is related to the safety of the entire power grid. Small damage of it may even cause a disaster. Nonlinear output frequency response functions (NOFRFs) can well reflect the nonline
Externí odkaz:
https://doaj.org/article/2fd346d4ba6a4a57ae5cc8443f954743
Publikováno v:
Applied Sciences, Vol 12, Iss 3, p 1236 (2022)
An ultrasonic coupling agent, as an acoustic medium between the ultrasonic probe and the surface of the specimens, is indispensable in Nondestructive Testing (NDT). Whether it is liquid, air, or solid coupling agent, the problem of improving the effi
Externí odkaz:
https://doaj.org/article/36eb4a699c23429ebd3bbf51e7fb1f58
Publikováno v:
Results in Physics, Vol 10, Iss , Pp 601-606 (2018)
The fatigue damage of gear in sugarcane presser is one of the most common damages, which is very difficult to detect in sugar factory. The nonlinear ultrasonic technique is used to evaluate the fatigue damage of gear in this paper. The perturbation m
Externí odkaz:
https://doaj.org/article/a48044bdcdd34740aef86823721f5e2a
Publikováno v:
Results in Physics, Vol 15, Iss , Pp - (2019)
Electrical impedance tomography (EIT) technology is widely used in the field of biomedical research. Its basic principle is to use the material's own impedance characteristics to characterize its internal structure. The study found that the damage pr
Externí odkaz:
https://doaj.org/article/25f6147da4754b28ae1f512dd59e3b97