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Results 1 - 7 of 7

Strain and Temperature Monitoring of Asymmetric Composite Laminate using FBG Hybrid Sensors

by Zhan-sheng Guo
"... Fiber Bragg grating (FBG) hybrid sensors and thermocouples measure strain and temperature simultaneously during and after cure of asymmetric cross-ply composite laminates. FBG strain sensor is used to measure strain; FBG temperature sensor and thermocouple are used to measure temperature. The charac ..."
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Fiber Bragg grating (FBG) hybrid sensors and thermocouples measure strain and temperature simultaneously during and after cure of asymmetric cross-ply composite laminates. FBG strain sensor is used to measure strain; FBG temperature sensor and thermocouple are used to measure temperature

On-board Strain Measurement of a Cryogenic Composite Tank Mounted on a Reusable Rocket using FBG Sensors

by Tadahito Mizutani, Nobuo Takeda, Hajime Takeya
"... This article presents the real-time strain measurement of a composite liquid hydrogen (LH2) tank using fiber Bragg grating (FBG) sensors. The tank was composed of carbon fiber reinforced plastic (CFRP), and an aluminum liner was fabricated by the filament winding method and mounted on a reusable roc ..."
Abstract - Cited by 4 (1 self) - Add to MetaCart
structural integrity must be guaranteed. Thus, the authors have attempted a real-time strain measurement of the composite LH2 tank using FBG sensors during rocket operations. First, the adhesive properties of the FBG sensors were investigated at cryogenic temperatures. As a result, UV-coated FBG sensors

Simultaneous monitoring of strain and temperature during and after cure of unsymmetric composite lamninate using fibre-optic sensors

by Hyun-kyu Kang, Dong-hoon Kang, Chang-sun Hong, Chun-gon Kim - Smart Mater. Struct
"... In this paper, we present a simultaneous measurement of strain and temperature during and after cure of unsymmetric cross-ply composite laminate using fiber optic sensors. Fiber Bragg grating/extrinsic Fabry-Perot interferometric (FBG/EFPI) hybrid sensors are used to measure those measurands. The ch ..."
Abstract - Cited by 8 (3 self) - Add to MetaCart
In this paper, we present a simultaneous measurement of strain and temperature during and after cure of unsymmetric cross-ply composite laminate using fiber optic sensors. Fiber Bragg grating/extrinsic Fabry-Perot interferometric (FBG/EFPI) hybrid sensors are used to measure those measurands

Cure monitoring of composite laminates using fiber optic sensors

by Hyun-Kyu Kang , Dong-Hoon Kang , Hyung-Joon Bang , Chang-Sun Hong , Chun-Gon Kim - Smart Mater. Struct , 2002
"... Abstract In this paper, we present the simultaneous measurement of the strain and temperature during cures of various composite laminates using fiber optic sensors. Fiber Bragg grating/extrinsic Fabry-Perot interferometric (FBG/EFPI) hybrid sensors were used to measure those measurands. The charact ..."
Abstract - Cited by 4 (0 self) - Add to MetaCart
Abstract In this paper, we present the simultaneous measurement of the strain and temperature during cures of various composite laminates using fiber optic sensors. Fiber Bragg grating/extrinsic Fabry-Perot interferometric (FBG/EFPI) hybrid sensors were used to measure those measurands

Durability and survivability of piezoelectric wafer active sensors on metallic structure

by Bin Lin, Victor Giurgiutiu, Patrick Pollock, Buli Xu, James Doane - AIAA Journal 2010
"... Piezoelectricwaferactive sensorsare small, inexpensive, noninvasive, elasticwavegenerators/receptors that canbe easily affixed to a structure. Piezoelectric wafer active sensor installation on the health-monitored structure is an important step thatmay have significant bearing on the success of the ..."
Abstract - Cited by 13 (7 self) - Add to MetaCart
transducersundervarious exposures (cryogenic andhigh temperature, temperature cycling, outdoor environment, operational fluids, large strains, fatigue load cycling) were considered over a long period of time. Both free piezoelectric wafer active sensors and bonded piezoelectric wafer active sensors onmetallic structural

Unsteady Force Measurements in Pitching-Plunging Airfoils

by Luis P Bernal, Michael V. Ol, Douglas P. Szczublewski, Craig A. Cox
"... A new sensor for unsteady force measurements of pitching and plunging airfoils using Fiber Bragg Gratings (FBG) in a water channel facility has been the developed. Load cells having four or five FBG sensors written in a single optical fiber have been developed to measure the strain at flexures desig ..."
Abstract - Cited by 1 (0 self) - Add to MetaCart
A new sensor for unsteady force measurements of pitching and plunging airfoils using Fiber Bragg Gratings (FBG) in a water channel facility has been the developed. Load cells having four or five FBG sensors written in a single optical fiber have been developed to measure the strain at flexures

AGR 05

by Università Degli, Studi Della Tuscia, Dottorato Di Ricerca, Candidato Tutori, Alessandra Lagomarsino, Prof Paolo, De Angelis, Prof Stefano Grego, Prof Paolo, De Angelis
"... Responses of soil biological processes to elevated atmospheric [CO2] and nitrogen addition in a poplar plantation ..."
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Responses of soil biological processes to elevated atmospheric [CO2] and nitrogen addition in a poplar plantation
Results 1 - 7 of 7
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