Results 51 to 60 of about 3,306,172 (262)

Integration of optical fibre sensors by material extrusion 3-D printing – The effect of bottom interlayer thickness

Materials & Design, 2022
Thermoplastic composites are becoming the materials of choice for lightweight structures. Distributed optical fibre sensors can be valuable for structural health monitoring of thermoplastic composites, improving safety against damage and extending the ...
Shaoquan Wang, Kaspar Lasn
doaj   +1 more source

White Matter and Perivascular Imaging Changes in Alzheimer's Disease and Cerebral Amyloid Angiopathy

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Peak‐width of skeletonized mean diffusivity (PSMD) and diffusion tensor imaging–analysis along the perivascular space (DTI‐ALPS), reflecting white matter integrity and glymphatic function, are altered in Alzheimer's disease (AD).
Debina Laishram, Guangwei Du, Sangam Kanekar, Nandakumar Nagaraja   +3 more
wiley   +1 more source

Efficacy of Fampridine on Refractory Optic Neuritis in Neuromyelitis Optica Spectrum Disorders

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Neuromyelitis optica spectrum disorders (NMOSD) usually occur with acute refractory optic neuritis (ON). However, there is a lack of efficacious treatments to improve recovery. Since fampridine has been found to improve the prognosis of multiple sclerosis (MS) and MS‐related ON, it is necessary to explore the efficacy of fampridine ...
Hongxuan Wang, Wanru Chen, Xiangpen Li, Hengjian Lu, Chenguang Li, Xiaoni Zhang, Lulu Bu, Xiaoyu Xu, Qingyu Shen, Ying Peng   +9 more
wiley   +1 more source

Applications of polymer optical fibre grating sensors to condition monitoring of textiles [PDF]

, 2009
Fibre Bragg gratings (FBGs) in polymer optical fibres (POFs) have been used to measure the strain in a woven textile. FBGs in both POFs and silica optical fibres were attached to a woven textile specimen, and their performance characterised.
Ye, Chen Chun, Dulleu-Barton, J. M., Chambers, A. R., Lennard, F. J., D. D. Eastop, Zhang, Chi, Peng, Gang-Ding, A. R. Chambers, Eastop, D.D., Dulieu-Barton, Janice M., 叶陈春, D. J. Webb, Webb, D. J., F. J. Lennard, C. C. Ye, Ye, C.C., Chambers, A.R., G.-D. Peng, Zhang, C., Lennard, F.J., Webb, D.J., Peng, G.-D., J. M. Dulieu-Barton, Ye, C. C., Eastop, D. D., C. Zhang, Webb, David J., Peng, G. D., Peng, G.D, Dulieu-Barton, J.M.   +29 more
core   +1 more source

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth, Tomáš Babinský, Jan Lars Riedel, Wen Hao Kan, Aijun Huang, Martin Heilmaier, Ivo Šulák   +6 more
wiley   +1 more source

Fibre grating refractometer sensors for composite process monitoring [PDF]

, 2007
Optimum performance from advanced composites requires careful control of the resin matrix during cure. This is to ensure there are no cure induced voids and to minimise the build up of internal stresses.
Ralph P. Tatam, Ivana K. Partridge, James, Stephen W., Athanasios Dimopoulos, Skordos, Alexandros A., Alexandros A. Skordos, Stephen J. Buggy, Tatam, Ralph P., Chehura, Edmon, Buggy, Stephen J., Stephen W. James, Dimopoulos, A., Partridge, Ivana K., Edmond Chehura   +13 more
core   +1 more source

Flexural Behavior of 3D‐Printed Porous Bouligand‐Structured Polymers: Influence of Pitch Angle and Porosity

Advanced Engineering Materials, EarlyView.
This study examines how helicoidal architectures with different porosities respond to bending. Adjusting layer angle and spacing in 3D‐printed polymers reveals clear tradeoffs between stiffness, strength, and energy absorption. Experiments and simulations highlight designs that distribute stress effectively, offering pathways for optimizing lightweight
Praveenkumar Subhash Patil, Edward D. McCarthy, Parvez Alam   +2 more
wiley   +1 more source

Studies and development of FBG based multi-point temperature sensor for vacuum chambers of synchrotron radiation source Indus-2

Results in Optics
This paper presents the development and deployment of a multi-point fiber Bragg grating (FBG) sensor system for precise temperature monitoring along the vacuum chamber walls of dipole and Pinger magnets in Indus-2, a synchrotron radiation source.
J. Kumar, S. Kumar, R. Mahakud, K.V.A.N.P.S. Kumar, B. Sindal, D.P. Yadav, P.K. Agrawal, M.K. Saxena, O. Prakash   +8 more
doaj   +1 more source

Fibre Optic Sensors with Nano-Structured Coatings. [PDF]

, 2006
A review of optical fibre devices employing nano-structured coatings is presented. Active and passive coatings, deposited using the Langmuirâ  Blodgett and electro-static self-assembly techniques, have been utilised to influence the transmission ...
Tatam, Ralph P., James, Stephen W.
core   +1 more source

Investigating the Effect of Inclination Angle and the Influence of Scan Parameters on the Appearance and Thermal and Mechanical Properties of Filigree Tension Rods of LPBF‐Manufactured NiTi Shape‐Memory Alloys

Advanced Engineering Materials, EarlyView.
This article investigates the dependence of the properties on the manufacturing orientation in the form of the inclination angle to the build plate of LPBF‐fabricated NiTi rods with a diameter of 150–220 µm. Metallographic, chemical, thermal, and mechanical characterization show behavior under identical manufacturing conditions that ranges from ...
Sandra Herzig, Michael Werner, Christian Rotsch   +2 more
wiley   +1 more source