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Articles 301 - 304 of 304
Full-Text Articles in Engineering
Interfacial Characteristics And Mechanical Properties Of Duplex Stainless Steel Bimetal Composite By Heat Treatment, Zhou Li, Jingwei Zhao, Fanghui Jia, Xiaojun Liang, Qingfeng Zhang, Xiangqian Yuan, Sihai Jiao, Zhengyi Jiang
Interfacial Characteristics And Mechanical Properties Of Duplex Stainless Steel Bimetal Composite By Heat Treatment, Zhou Li, Jingwei Zhao, Fanghui Jia, Xiaojun Liang, Qingfeng Zhang, Xiangqian Yuan, Sihai Jiao, Zhengyi Jiang
Faculty of Engineering and Information Sciences - Papers: Part B
© 2020 Elsevier B.V. The interfacial morphologies play a crucial role in mechanical properties of laminated/bimetal composite. This study investigates the effects of heat treatments on the interfacial characteristics, mechanical properties and fracture behaviour of a 2205 duplex stainless steel/AH36 carbon steel bimetal composite with varying interface situations fabricated by the hot-rolling and subsequent heat treatments. The bimetal composite was annealed from 850 °C to 1150 °C in steps of 100 °C with soaking 1 h. Heterogeneities of grain size and element concentration exist in the microstructural evolution of bonding zone adjacent to interface after annealing treatments, which were observed …
Cartan Subalgebras For Non-Principal Twisted Groupoid C⁎-Algebras, Anna L. Duwenig, E Gillaspy, R Norton, S Reznikoff, S Wright
Cartan Subalgebras For Non-Principal Twisted Groupoid C⁎-Algebras, Anna L. Duwenig, E Gillaspy, R Norton, S Reznikoff, S Wright
Faculty of Engineering and Information Sciences - Papers: Part B
2020 Elsevier Inc. Renault proved in 2008 [22, Theorem 5.2] that if G is a topologically principal groupoid, then C0(G(0)) is a Cartan subalgebra in Cr⁎(G,Σ) for any twist Σ over G. However, there are many groupoids which are not topologically principal, yet their (twisted) C⁎-algebras admit Cartan subalgebras. This paper gives a dynamical description of a class of such Cartan subalgebras, by identifying conditions on a 2-cocycle c on G and a subgroupoid S⊆G under which Cr⁎(S,c) is Cartan in Cr⁎(G,c). When G is a discrete group, we also describe the Weyl groupoid and twist associated to these Cartan …
An Unsupervised Deep Learning Technique For Susceptibility Artifact Correction In Reversed Phase-Encoding Epi Images, Soan Duong, Son Lam Phung, Abdesselam Bouzerdoum, Mark M. Schira
An Unsupervised Deep Learning Technique For Susceptibility Artifact Correction In Reversed Phase-Encoding Epi Images, Soan Duong, Son Lam Phung, Abdesselam Bouzerdoum, Mark M. Schira
Faculty of Engineering and Information Sciences - Papers: Part B
© 2020 Elsevier Inc. Echo planar imaging (EPI) is a fast and non-invasive magnetic resonance imaging technique that supports data acquisition at high spatial and temporal resolutions. However, susceptibility artifacts, which cause the misalignment to the underlying structural image, are unavoidable distortions in EPI. Traditional susceptibility artifact correction (SAC) methods estimate the displacement field by optimizing an objective function that involves one or more pairs of reversed phase-encoding (PE) images. The estimated displacement field is then used to unwarp the distorted images and produce the corrected images. Since this conventional approach is time-consuming, we propose an end-to-end deep learning technique, …
Period-One Microwave Photonic Sensing By A Laser Diode With Optical Feedback, Bairun Nie, Yuxi Ruan, Yanguang Yu, Qinghua Guo, Jiangtao Xi, Jun Tong
Period-One Microwave Photonic Sensing By A Laser Diode With Optical Feedback, Bairun Nie, Yuxi Ruan, Yanguang Yu, Qinghua Guo, Jiangtao Xi, Jun Tong
Faculty of Engineering and Information Sciences - Papers: Part B
With external optical feedback (EOF), a laser diode (LD) can operate at different dynamic states. In this work, an LD with EOF is set at period-one (P1) oscillation state to generate microwave photonic (MWP) signal for sensing. Firstly, the P1 state boundary of the LD is determined and then the influence of the LD controllable parameters on the boundary is studied by solving the well-known Lang-Kobayashi equations. A set of parameters selection rule for designing an LD based MWP sensing system is obtained. In addition, a measurement algorithm for recovering the displacement from an MWP sensing signal is developed. By …