Results 151 to 160 of about 15,067 (255)

New multiplexing scheme for monitoring fiber optic Bragg grating sensors in the coherence domain

, 1997
A new multiplexing scheme for monitoring fiber optic Bragg gratings in the coherence domain has been developed. Grating pairs with different grating distances are distributed along a fiber line, and interference between their reflections is monitored ...
Dakin, J.P., Ecke, W., Rothardt, M., Schauer, J., Usbeck, K., Willsch, R.   +5 more
core   +1 more source

Evaluation of prestress losses in concrete beams using destructive and non‐destructive methods

Structural Concrete, EarlyView.
Abstract Over the past few decades, prestressing techniques have become essential in the construction of key structures, infrastructure, and bridges. The serviceability and safety of prestressed concrete (PC) elements are closely tied to the effectiveness of the prestressing process.
A. N. Consiglio, G. Muciaccia, G. Rosati
wiley   +1 more source

A Dual‐Frequency Sensitivity Model for Optical Fibre Ultrasonic Sensors in Power Transformer Partial Discharge Detection

High Voltage, EarlyView.
ABSTRACT The detection of partial discharges (PD) on the power transformer tank demands higher sensitivity in ultrasonic detection. To target the detection frequency band for sensor optimisation and enhance sensitivity, this paper presents a dual‐frequency sensitivity model for optical fibre ultrasonic sensors.
Sihan Wang, Jihang Sun, Jialin Wang, Bin Wei, Guoming Ma   +4 more
wiley   +1 more source

Advanced fibre Bragg grating structures: design and application

, 2004
This thesis presents experimental and computational work on a variety of advanced fibre Bragg grating structures covering long dispersion compensating chirped Bragg gratings, superstructured Bragg gratings for identical multiple channel operation, Bragg ...
Ibsen, Morten
core  

Read My Leads: Subject‐Specific RF Hazard Assessment and Mitigation for DBS Implants in MRI

Magnetic Resonance in Medicine, Volume 95, Issue 4, Page 2316-2330, April 2026.
ABSTRACT Purpose To develop and validate a framework for personalized, implant‐specific MRI safety assessments using feedback from commercial deep brain stimulation (DBS) systems. To further use this framework to suppress RF‐induced heating with minimum compromise in imaging performance.
Berk Silemek, Frank Seifert, Mevlüt Yalaz, Michael Höft, Günther Deuschl, Arzu Has Silemek, Rüdiger Brühl, Bernd Ittermann, Lukas Winter   +8 more
wiley   +1 more source

Thickness Effects on Distributed Backface Strain Sensing of Adhesively Bonded Joints Under Mixed Mode Fatigue Loading

Fatigue &Fracture of Engineering Materials &Structures, Volume 49, Issue 3, Page 963-978, March 2026.
ABSTRACT Adhesively bonded structures often consist of parts with different or varying thicknesses, which can influence their mechanical behavior and performance. Distributed backface strain monitoring using optical fiber sensors offers a promising solution for the real‐time structural monitoring of adhesive joints.
Alessandra Panerai, Luca Michele Martulli, Andrea Bernasconi, Michele Carboni   +3 more
wiley   +1 more source

Short-wavelength transmission-loss suppression in fibre Bragg gratings

, 1997
Fibre Bragg Gratings (FBGs) are known to suffer from short-wavelength, transmission losses due to resonant coupling into backward-propagating cladding modes. Figure 1 shows a typical transmission spectrum of a 10cm standard FBG.
Ibsen, M., Laming, R.I., Zervas, M.N.
core  

Mechanically Tunable Bone Scaffolds: In Vivo Hardening of 3D‐Printed Calcium Phosphate/Polycaprolactone Inks

Advanced Functional Materials, Volume 36, Issue 12, 9 February 2026.
A 3D bone scaffold with osteogenic properties and capable of hardening in vivo is developed. The scaffold is implanted in a ductile state, and a phase transformation of the ceramic induces the stiffening and strengthening of the scaffold in vivo. Abstract Calcium phosphate 3D printing has revolutionized customized bone grafting.
Miguel Mateu‐Sanz, Pablo Varela, Laura del‐Mazo‐Barbara, Irene Lodoso‐Torrecilla, Emilio Jiménez‐Piqué, Jordi Franch, Miguel Alaminos, Maria‐Pau Ginebra   +7 more
wiley   +1 more source

Analysis of Demodulation Methods of Tilted Fibre Bragg Gratings Based on the Local Shift of the Cladding Mode Group

Applied Sciences
Tilted fibre Bragg gratings are optical fibre structures used as sensors of various physical quantities. However, their most popular application is to measure the refractive index of liquids.
Sławomir Cięszczyk, Krzysztof Skorupski, Patryk Panas   +2 more
doaj   +1 more source

MEMS‐Based Magnetoelectric Antennas for Wireless Power Transmission in Brain‐Implantable Devices

Advanced Materials Technologies, Volume 11, Issue 3, 5 February 2026.
Magnetoelectric (ME) antennas allow the minimization of the invasiveness of brain implantable devices, via powering wirelessly systems able to actuate neural tissue. In order to achieve the necessary power efficiency transmission, the choice of the materials and the system assembly is vital.
Laura Mazón‐Maldonado, Jungang Zhang, María Cerezo‐Sánchez, Mahdieh Shojaei Baghini, Roghaieh Parvizi, Hadi Heidari   +5 more
wiley   +1 more source