Zobrazeno 1 - 10
of 71
pro vyhledávání: '"Francesco Villecco"'
Publikováno v:
Journal of Applied and Computational Mechanics, Vol 10, Iss 1, Pp 152-163 (2024)
In order to improve the design of the actuators of a Dragon Fly prototype, we study the loads applied to the actuators in operation. Both external and inertial forces are taken into account, as well as internal loads, for the purposes of evaluating t
Externí odkaz:
https://doaj.org/article/d275788c3c5341018acf3b760b1ee6f2
Publikováno v:
Fractal and Fractional, Vol 8, Iss 8, p 485 (2024)
For lithium-ion batteries and supercapacitors in hybrid power storage facilities, both steady degradation and random shock contribute to their failure. To this end, in this paper, we propose to introduce the degradation-threshold-shock (DTS) model fo
Externí odkaz:
https://doaj.org/article/6d096e5d50dd47198b0a1c571ab9c6ab
Autor:
Wanqing Song, Mingdeng Zhong, Minjie Yang, Deyu Qi, Simone Spadini, Piercarlo Cattani, Francesco Villecco
Publikováno v:
Fractal and Fractional, Vol 8, Iss 4, p 183 (2024)
Roller bearing degradation features fractal characteristics such as self-similarity and long-range dependence (LRD). However, the existing remaining useful life (RUL) prediction models are memoryless or short-range dependent. To this end, we propose
Externí odkaz:
https://doaj.org/article/f007d9a06989449b932bddf7406eb617
Publikováno v:
Alexandria Engineering Journal, Vol 63, Iss , Pp 17-43 (2023)
Nonlinear partial differential equations emerge in an extensive variants of physical problems inclusive of fluid dynamics, solid mechanics, plasma physics, quantum field theory as well as mathematics and engineering. It has also been noticed that sys
Externí odkaz:
https://doaj.org/article/3010292215894e778a26fbdf3e9ecbca
Autor:
Deyu Qi, Zijiang Zhu, Fengmin Yao, Wanqing Song, Aleksey Kudreyko, Piercarlo Cattani, Francesco Villecco
Publikováno v:
Fractal and Fractional, Vol 8, Iss 1, p 55 (2024)
Remaining useful life prediction guarantees a reliable and safe operation of turbofan engines. Long-range dependence (LRD) and heavy-tailed characteristics of degradation modeling make this method advantageous for the prediction of RUL. In this study
Externí odkaz:
https://doaj.org/article/31da1b3a0679457dac6ac412c6851727
Publikováno v:
Fractal and Fractional, Vol 8, Iss 1, p 14 (2023)
The remaining useful life (RUL) prediction of wind turbine planetary gearboxes is crucial for the reliable operation of new energy power systems. However, the interpretability of the current RUL prediction models is not satisfactory. To this end, a m
Externí odkaz:
https://doaj.org/article/e94f83750b9a443196e476018c3c8e6a
Publikováno v:
Fractal and Fractional, Vol 7, Iss 4, p 325 (2023)
Tool wear will reduce workpieces’ quality and accuracy. In this paper, the vibration signals of the milling process were analyzed, and it was found that historical fluctuations still have an impact on the existing state. First of all, the linear fr
Externí odkaz:
https://doaj.org/article/b644a6ee1eb14abe8967cccf65965a25
Publikováno v:
Entropy, Vol 24, Iss 9, p 1199 (2022)
Automated segmentation of brain tumors is a difficult procedure due to the variability and blurred boundary of the lesions. In this study, we propose an automated model based on Bendlet transform and improved Chan-Vese (CV) model for brain tumor segm
Externí odkaz:
https://doaj.org/article/05f0e5ec5b7e4334958fd9da1e24971e
Publikováno v:
Entropy, Vol 24, Iss 7, p 869 (2022)
Magnetic resonance imaging (MRI) plays an important role in disease diagnosis. The noise that appears in MRI images is commonly governed by a Rician distribution. The bendlets system is a second-order shearlet transform with bent elements. Thus, the
Externí odkaz:
https://doaj.org/article/710da10ace8d4ee4b12e4bb3f7369b4a
Publikováno v:
Shock and Vibration, Vol 2021 (2021)
Multipoint optimal minimum entropy deconvolution adjusted (MOMEDA) is a powerful method that can extract the periodic characteristics of signal effectively, but this method needs to evaluate the fault cycle a priori, and moreover, the results obtaine
Externí odkaz:
https://doaj.org/article/e7b2acbc08774b3da28722054bf6e37a