Application of optical fiber as strain gauges in polymer composite materials

Каблов, Е. Н.; Сиваков, Д В; Gulyaev, I.N.; Сорокин, К В; Fedotov, M. Yu.; Dianov, E. M.; Васильев, С. А.; Medvedkov, O. I.

doi:10.1134/s1995421211030063

Cited by 16 publications

(5 citation statements)

References 1 publication

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“…Для решения задач мониторинга состояния авиационных конструкций в последнее время активно используются оптоволоконные датчики различного типа [3][4][5][6][7][8][9][10][11][12][13][14]. Наиболее распространенными из них, обеспечивающими хорошую точность измерений с приемлемой стоимостью как самих датчиков, так и регистрирующей аппаратуры, являются датчики на основе решеток Брэгга (ВБР) (рис.…”

Section: рис 2 результаты численного моделирования шпангоута реверсunclassified

Numerical Simulation for Development of Methodology of Stress-Strain State Control of Composite Bulkhead for Aviation Application With the Usage of FBG Sensors

2018

PNRPU MB

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Волоконно-оптические датчики применяются для мониторинга состояния конструкций в различных отраслях промышленности. С целью контроля изделий из полимерных композиционных материалов лучшим решением для мониторинга деформаций являются волоконные Брэгговские решетки (ВБР). Основная цель данной работы-разработка методологии обнаружения и идентификации различных типов повреждений и предельной нагрузки в течение срока службы конструкции. В работе рассматривается возможность изучения напряженно-деформированного состояния (НДС), отслеживания структурных изменений конструкции с помощью ВБР на примере П-образного композитного шпангоута авиационного двигателя. На основании выявленных закономерностей и особенностей работы ВБР определены основные точки контроля. В ходе исследований создана трехмерная компьютерная модель композитного шпангоута авиационной двигательной установки для анализа напряженно-деформированного состояния при различных условиях нагружения. Разработанная модель позволяет выполнять послойный анализ композитной конструкции шпангоута для оценки межслойных нормальных и сдвиговых напряжений, которые и определяют разрушение конструкции. Численное моделирование этой задачи проводилось методом конечных элементов (МКЭ) в программном пакете ANSYS Workbench. Численные результаты сравнивались с экспериментальными данными, полученными при лабораторных испытаниях сегмента композитного шпангоута, оснащенного волоконнооптическими датчиками. Испытания проводились на оборудовании научной установки «Уникальный научно-технологический комплекс автоматизированной выкладки» с помощью сервогидравлической машины Zwick и интеррогатора Astro X327. Полученные результаты могут быть использованы для определения размера эффективной «чувствительной зоны» для встраивания волоконно-оптических датчиков (ВОД) на основе Брэгговских решеток в конструкцию композитного шпангоута.

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Section: рис 2 результаты численного моделирования шпангоута реверсunclassified

Numerical Simulation for Development of Methodology of Stress-Strain State Control of Composite Bulkhead for Aviation Application With the Usage of FBG Sensors

2018

PNRPU MB

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“…For the quartz optical fiber, which does not interact with other solids at the place of the Bragg grating location, the strain coefficient is K ε ≈ 0.78 with sufficiently high accuracy . In the case when the optical fiber with the Bragg grating interacts with the surface of some material (e.g., through a glue joint) or is embedded in the material, the value of the coefficient K ε in Relation , which is used to evaluate the strain, must be refined, that is, calibrated.…”

Section: Object Of Studymentioning

confidence: 99%

“…A detailed description of optical phenomena, which occur in the FBGs and permit measuring the strains, can be found in literature …”

Section: Object Of Studymentioning

confidence: 99%

Measurement of strains by optical fiber Bragg grating sensors embedded into polymer composite material

Матвеенко

Шардаков

Voronkov

et al. 2017

Struct Control Health Monit

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Summary This paper presents the experimental results of strain measurements made by the fiber Bragg grating sensors embedded into polymer composite materials (PCMs). A series of performed experiments are described to demonstrate the capability of fiber optic sensors to measure strains in the case of their pronounced gradient distribution within the material, under compression and tension, at cyclic variation of strains with time and at different temperatures. A measuring technique is presented, and the results of strain measurements during the process of preparation of PCM including measurements of residual process‐induced strains are discussed.The results of strain measurements made by fiber optic strain sensors (FOSS) are compared with the results of numerical modeling based on the finite element method and independent measurement data obtained with the use of a digital optical system Vic‐3D and other experimental devices. The comparison made shows good agreement between the results obtained by the experimental methods and numerical simulation.The results of numerical computations demonstrate that the embedment of optical fibers in a PCM introduces perturbations in the strain distribution pattern in the vicinity of optical fibers but practically does not cause changes in the value of the strain tensor component measured by the FOSS. The conclusions about applicability range of FOSS embedded into PCM were made based upon the numerical simulation. The interrelation model between Bragg wavelength peak shift and the strain of the optical fiber in the fiber Bragg grating area for the sensor that is not affected by the environment is proposed.

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“…The importance of such knowledge increases along with using PCM to manufacture various aircraft designs [1][2][3]. In the technological process of manufacturing, testing, and operation of samples and structures made of PCM, non-destructive and built-in methods are the preferred control methods [4][5][6][7]. Introducing a monitoring system is necessary due to assessing the actual load, which often differs significantly from the planned one, in determining the aircraft resource.…”

Section: Introductionmentioning

confidence: 99%

Registration of the Growth of Manufacturing Defects by the Monitoring System During the Operation of the Structure

Tinchurina,

Kononov,

Permyakov

et al. 2023

E3S Web Conf.

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Structural composite materials are currently increasingly used in various fields of modern technology. The potential capabilities of composites exceed those of traditional materials due to particular mechanical characteristics and fundamentally new qualities arising from the simultaneous creation of material and structure. This paper describes the experience of using fiber-optic distributed and piezoelectric sensors to monitor the state of samples of materials used in the construction of aircraft. Characteristic forms of responses from fiber-optic and piezoelectric sensors are presented, which make it possible to determine the growth of delamination that occurs in polymer composite materials under various impacts.

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Application of optical fiber as strain gauges in polymer composite materials

Cited by 16 publications

References 1 publication

Numerical Simulation for Development of Methodology of Stress-Strain State Control of Composite Bulkhead for Aviation Application With the Usage of FBG Sensors

Numerical Simulation for Development of Methodology of Stress-Strain State Control of Composite Bulkhead for Aviation Application With the Usage of FBG Sensors

Measurement of strains by optical fiber Bragg grating sensors embedded into polymer composite material

Registration of the Growth of Manufacturing Defects by the Monitoring System During the Operation of the Structure

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