Zobrazeno 1 - 10
of 48
pro vyhledávání: '"Dejian Sun"'
Autor:
Dejian Sun, Linfei Guo, Guanhua Wu, Yaqian Tong, Yang Gao, Songqin Xia, Lei Fan, Xiaoqin Guo, Linan An
Publikováno v:
Journal of Materials Research and Technology, Vol 30, Iss , Pp 8482-8487 (2024)
A powder metallurgy superalloy prepared by hot pressing (HP) was forged under static and oscillatory pressures. The microstructure, mechanical properties and fracture behavior of the sample before and after forging were characterized in detail. The r
Externí odkaz:
https://doaj.org/article/d16ce6b2733b4a76ba124dec4c59bff3
Publikováno v:
Heliyon, Vol 10, Iss 6, Pp e27986- (2024)
In allusion to solve the issue of fault diagnosis for bearing and other rotatory machinery, a technique based on fined-grained multi-scale Kolmogorov entropy and whale optimized multi-class support vector machine (abbreviated as FGMKE-WOA-MSVM) is pr
Externí odkaz:
https://doaj.org/article/d4115bce81d94091aa7f6e2242367eba
Autor:
Xuewei Yan, Xuemei Yang, Guoqiang Tian, Dejian Sun, Shilong Liu, Zhihui Xiong, Zhenhua Wen, Qingyan Xu
Publikováno v:
Metals, Vol 12, Iss 10, p 1711 (2022)
Microstructure has significant effects on the mechanical properties of AlSi10Mg alloy. Therefore, an in-depth understanding of microstructure evolution, such as dendrite and Al-Si eutectic, is of great significance to obtain the desirable microstruct
Externí odkaz:
https://doaj.org/article/d25010c5525149258a1b919c9f8588ab
Publikováno v:
Metals, Vol 12, Iss 10, p 1652 (2022)
The effect of the hot oscillatory pressing (HOPing) temperature on the microstructure and tensile behavior of the powder metallurgy superalloys was investigated and compared with those of the hot pressed (HPed) sample. The results show that as the HO
Externí odkaz:
https://doaj.org/article/e673cd4bba8240bca7e3085425c2a621
Publikováno v:
Jixie chuandong, Vol 43, Pp 148-153 (2019)
In order to solve the degenerative feature extraction issue of hoisting mechanism gearbox, an online extraction method for degeneration feature based on mathematical morphological fractal dimension and sliding window Weibull fitting is proposed. Firs
Externí odkaz:
https://doaj.org/article/d333cf81058f4e1298f6eca3a5bd3bcb
Publikováno v:
Journal of Materials Research and Technology, Vol 8, Iss 1, Pp 1347-1352 (2019)
A new grain selection method assisted by un-melted short seed was proposed to control the primary and secondary orientations of Ni-based single-crystal superalloy. The results showed that the use of short seeds could effectively avoid the formation o
Externí odkaz:
https://doaj.org/article/dec7c7e824b340cfb6b3fa68e2e46adc
Publikováno v:
Shock and Vibration, Vol 2019 (2019)
Shore bridge and other port cranes have some working condition characters including high speed, heavy load, and large impact. In order to solve the degradation feature extraction issue of hoisting mechanism gearbox, an online degradation feature extr
Externí odkaz:
https://doaj.org/article/405519c742314dd7b75fe2f1b5cb25e8
Publikováno v:
Advances in Mechanical Engineering, Vol 10 (2018)
A fault diagnosis method using improved pattern spectrum and fruit fly optimization algorithm–support vector machine is proposed. Improved pattern spectrum is introduced for feature extraction by employing morphological erosion operator. Simulation
Externí odkaz:
https://doaj.org/article/e9da5e3363a145fca8674329830a1774
Bearing condition degradation assessment based on basic scale entropy and Gath-Geva fuzzy clustering
Publikováno v:
Advances in Mechanical Engineering, Vol 10 (2018)
A method based on basic scale entropy and Gath-Geva fuzzy clustering is proposed in order to solve the issue of bearing degradation condition recognition. The evolution rule of basic scale entropy for bearing in performance degradation process is ana
Externí odkaz:
https://doaj.org/article/f0fcc60846904a7b9a76be2965418f6e
Publikováno v:
Advanced Engineering Materials.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2534766b7f6309cf756079cf07b653a9
https://doi.org/10.1002/adem.202201899
https://doi.org/10.1002/adem.202201899