Zobrazeno 1 - 10
of 91
pro vyhledávání: '"Jinjie Zhou"'
Publikováno v:
Micromachines, Vol 15, Iss 10, p 1261 (2024)
In order to solve the problem that small defects hidden behind pipeline support parts are difficult to detect effectively in small spaces, such as offshore oil platforms, a meander-coil-type dual magnetic group circumferential magnetostrictive guided
Externí odkaz:
https://doaj.org/article/4c62baf44dfc4435a13839d221bc06f0
Publikováno v:
Micromachines, Vol 15, Iss 8, p 977 (2024)
In view of the low signal-to-noise ratio (SNR) of shear wave electromagnetic acoustic transducers (EMAT) in the detection of high-temperature equipment, the use of low excitation voltage (LEV) further deteriorates the detection results, resulting in
Externí odkaz:
https://doaj.org/article/a4631a2cde5e419d88a75de4a5219974
Publikováno v:
Micromachines, Vol 15, Iss 7, p 812 (2024)
The 1-3 piezoelectric composite is the key component of the acoustic transducer, which is widely used in detection, due to the high energy conversion efficiency, cheap raw material, and low aging. To reveal the influence of epoxy mixture, used to con
Externí odkaz:
https://doaj.org/article/a968f8e6eb1b404aa5397cbb5e453078
Publikováno v:
Applied Sciences, Vol 14, Iss 11, p 4952 (2024)
At present, many high-temperature pipelines need to carry out non-stop detection under high-temperature conditions, and an ultrasonic guided wave is undoubtedly one of the solutions with the highest potential to solve the problem. However, there is a
Externí odkaz:
https://doaj.org/article/6a994c042e024fe1995daaf1f0bacfd6
Publikováno v:
Journal of Materials Research and Technology, Vol 23, Iss , Pp 2147-2159 (2023)
Graphene/Aluminum (Gr/Al) composites with different graphene chirality and distribution patterns were established. The contribution of graphene interfaces to the mechanical properties of composites was investigated by using molecular dynamics methods
Externí odkaz:
https://doaj.org/article/0bda4146af4f48d2b5055478282d9724
Publikováno v:
Micromachines, Vol 15, Iss 4, p 550 (2024)
When pipe defects are generated above the T-type support structure location, it is difficult to distinguish the reflection signals caused by the weld bead at the support structure from the reflection echoes of pipe defects. Therefore, in order to eff
Externí odkaz:
https://doaj.org/article/fdd3f9d0e59940768e6e8893790241ed
Publikováno v:
Chinese Journal of Mechanical Engineering, Vol 36, Iss 1, Pp 1-13 (2023)
Abstract Pinhole corrosion is difficult to discover through conventional ultrasonic guided waves inspection, particularly for micro-sized pinholes less than 1 mm in diameter. This study proposes a new micro-sized pinhole inspection method based on se
Externí odkaz:
https://doaj.org/article/e2d47671601b4206875d329ae65a8f38
Autor:
Dawn E. Holmes, Haiyan Tang, Trevor Woodard, Dandan Liang, Jinjie Zhou, Xinying Liu, Derek R. Lovley
Publikováno v:
mLife, Vol 1, Iss 4, Pp 443-447 (2022)
Externí odkaz:
https://doaj.org/article/5cedf9f17b36495682f870f98e88756f
Publikováno v:
mLife, Vol 1, Iss 3, Pp 272-286 (2022)
Abstract Direct interspecies electron transfer (DIET) may be most important in methanogenic environments, but mechanistic studies of DIET to date have primarily focused on cocultures in which fumarate was the terminal electron acceptor. To better und
Externí odkaz:
https://doaj.org/article/cfd3ee27ee08448f9c3991cdc64ac617
Publikováno v:
Chinese Journal of Mechanical Engineering, Vol 35, Iss 1, Pp 1-14 (2022)
Abstract Low excitation voltage for an electromagnetic acoustic transducer (EMAT) is necessary for the petrochemical equipment and facilities inspection, which work at high-temperatures, to avoid potential explosion. However, low excitation voltage c
Externí odkaz:
https://doaj.org/article/631b3192267c47d0a5ab6b91baa2d34a