Concrete fatigue experiment for sensor prototyping and validation of industrial SHM trials

Jack McAlorum; Grzegorz Fusiek; Tim Rubert; Paweł  Niewczas

doi:10.1109/I2MTC.2019.8827036

Concrete fatigue experiment for sensor prototyping and validation of industrial SHM trials

Jack McAlorum, Grzegorz Fusiek, Tim Rubert, Paweł Niewczas

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution book

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Abstract

In this paper, preliminary results from a concrete fatigue experiment using a custom built machine are demonstrated. A pre-cracked concrete member is instrumented with bespoke metallic-bonded and epoxy-bonded fiber Bragg grating (FBG) displacement sensors, retrofitted over the crack. Fatigue loading is applied to the beam, with cycle magnitudes replicating results from a previous industrial trial concerning structural health monitoring (SHM) of a wind turbine foundation. Results are compared to an FEM model for verification. The new metallic-bonded crack displacement sensor design is compared in performance with the traditional epoxy-bonded design. Both sensors were sufficiently resilient under dynamic loading to successfully undergo 10⁵ cycle fatigue test. The sensors display a linear relationship with respect to one another; however, from the initial thermal characterization of the devices between 20 and 65 °C, the epoxy-bonded sensor exhibited considerable drift with every subsequent temperature cycle while the metallic-bonded construction was stable within the experimental error. The set up can be used over a long term to validate in situ results from distributed SHM sensors and for initial testing of sensors and data analytics strategies prior to any future field installations.

Original language	English
Title of host publication	2019 IEEE International Instrumentation and Measurement Technology Conference (I2MTC)
Place of Publication	Piscataway, NJ
Publisher	IEEE
Number of pages	6
ISBN (Electronic)	9781538634608
DOIs	https://doi.org/10.1109/I2MTC.2019.8827036
Publication status	Published - 9 Sept 2019
Event	I2MTC 2019 - Auckland, New Zealand Duration: 20 May 2019 → 23 May 2019

Conference

Conference	I2MTC 2019
Country/Territory	New Zealand
City	Auckland
Period	20/05/19 → 23/05/19

Keywords

concrete fatigue
machine
metallic-bonded
epoxy-bonded
FBG
fatigue test-bench

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10.1109/I2MTC.2019.8827036

McAlorum-etal-I2MTC2019-Concrete-fatigue-experiment-for-sensor-prototyping-and-validationAccepted author manuscript, 1.27 MB

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title = "Concrete fatigue experiment for sensor prototyping and validation of industrial SHM trials",

abstract = "In this paper, preliminary results from a concrete fatigue experiment using a custom built machine are demonstrated. A pre-cracked concrete member is instrumented with bespoke metallic-bonded and epoxy-bonded fiber Bragg grating (FBG) displacement sensors, retrofitted over the crack. Fatigue loading is applied to the beam, with cycle magnitudes replicating results from a previous industrial trial concerning structural health monitoring (SHM) of a wind turbine foundation. Results are compared to an FEM model for verification. The new metallic-bonded crack displacement sensor design is compared in performance with the traditional epoxy-bonded design. Both sensors were sufficiently resilient under dynamic loading to successfully undergo 105 cycle fatigue test. The sensors display a linear relationship with respect to one another; however, from the initial thermal characterization of the devices between 20 and 65 °C, the epoxy-bonded sensor exhibited considerable drift with every subsequent temperature cycle while the metallic-bonded construction was stable within the experimental error. The set up can be used over a long term to validate in situ results from distributed SHM sensors and for initial testing of sensors and data analytics strategies prior to any future field installations.",

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author = "Jack McAlorum and Grzegorz Fusiek and Tim Rubert and Pawe{\l} Niewczas",

note = "{\textcopyright} 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.; I2MTC 2019 ; Conference date: 20-05-2019 Through 23-05-2019",

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AU - Fusiek, Grzegorz

AU - Rubert, Tim

AU - Niewczas, Paweł

N1 - © 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

PY - 2019/9/9

Y1 - 2019/9/9

N2 - In this paper, preliminary results from a concrete fatigue experiment using a custom built machine are demonstrated. A pre-cracked concrete member is instrumented with bespoke metallic-bonded and epoxy-bonded fiber Bragg grating (FBG) displacement sensors, retrofitted over the crack. Fatigue loading is applied to the beam, with cycle magnitudes replicating results from a previous industrial trial concerning structural health monitoring (SHM) of a wind turbine foundation. Results are compared to an FEM model for verification. The new metallic-bonded crack displacement sensor design is compared in performance with the traditional epoxy-bonded design. Both sensors were sufficiently resilient under dynamic loading to successfully undergo 105 cycle fatigue test. The sensors display a linear relationship with respect to one another; however, from the initial thermal characterization of the devices between 20 and 65 °C, the epoxy-bonded sensor exhibited considerable drift with every subsequent temperature cycle while the metallic-bonded construction was stable within the experimental error. The set up can be used over a long term to validate in situ results from distributed SHM sensors and for initial testing of sensors and data analytics strategies prior to any future field installations.

AB - In this paper, preliminary results from a concrete fatigue experiment using a custom built machine are demonstrated. A pre-cracked concrete member is instrumented with bespoke metallic-bonded and epoxy-bonded fiber Bragg grating (FBG) displacement sensors, retrofitted over the crack. Fatigue loading is applied to the beam, with cycle magnitudes replicating results from a previous industrial trial concerning structural health monitoring (SHM) of a wind turbine foundation. Results are compared to an FEM model for verification. The new metallic-bonded crack displacement sensor design is compared in performance with the traditional epoxy-bonded design. Both sensors were sufficiently resilient under dynamic loading to successfully undergo 105 cycle fatigue test. The sensors display a linear relationship with respect to one another; however, from the initial thermal characterization of the devices between 20 and 65 °C, the epoxy-bonded sensor exhibited considerable drift with every subsequent temperature cycle while the metallic-bonded construction was stable within the experimental error. The set up can be used over a long term to validate in situ results from distributed SHM sensors and for initial testing of sensors and data analytics strategies prior to any future field installations.

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KW - machine

KW - metallic-bonded

KW - epoxy-bonded

KW - FBG

KW - fatigue test-bench

UR - https://i2mtc2019.ieee-ims.org/

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DO - 10.1109/I2MTC.2019.8827036

M3 - Conference contribution book

BT - 2019 IEEE International Instrumentation and Measurement Technology Conference (I2MTC)

PB - IEEE

CY - Piscataway, NJ

T2 - I2MTC 2019

Y2 - 20 May 2019 through 23 May 2019

ER -

Concrete fatigue experiment for sensor prototyping and validation of industrial SHM trials

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