Fatigue damage detection of CFRP using the electrical resistance change method

Todoroki, Akira; Mizutani, Yoshihiro; Suzuki, Yoshiro; Haruyama, Daichi

doi:10.5139/ijass.2013.14.4.350

Cited by 13 publications

(12 citation statements)

References 21 publications

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“…Many researchers have utilized the electrical resistance change method to detect damage in CFRP composites [34,5,6]. ERCM applies a DC or AC current with constant amplitude at a particular frequency and measures the surface potential ( Fig.…”

Section: Impedance-based Cfrp Composite Characterizationmentioning

confidence: 99%

“…electrical resistance change method (ERCM) [34,5,6], electrical impedance spectroscopy (EIS) [32,17,57] and electrical impedance tomography (EIT) [28,15,56].…”

Section: Impedance-based Cfrp Composite Characterizationmentioning

confidence: 99%

“…electrical resistance or impedance methods) [34,5,6] have been found to be fast and low-cost methods that are suitable for offline or online inspection of carbon fiber reinforced polymer (CFRP) composites. Electrical impedance tomography (EIT) can be non-invasive and used for in-situ and real-time monitoring of structural integrity in terms of electrical impedance.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Laser-based surface preparation of composite laminates leads to improved electrodes for electrical measurements

Almuhammadi

Selvakumaran

Alfano

et al. 2015

Applied Surface Science

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Laserbased surface preparation of composite laminates leads to improved electrodes for electrical measurements, Applied Surface Science (2015), http://dx.doi.org/10.1016/j.apsusc. 2015.10.086 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.Page 1 of 32 A c c e p t e d M a n u s c r i p t AbstractElectrical impedance tomography (EIT) is a low-cost, fast and effective structural health monitoring technique that can be used on carbon fiber reinforced polymers (CFRP). Electrodes are a key component of any EIT system and as such they should feature low resistivity as well as high robustness and reproducibility. Surface preparation is required prior to bonding of electrodes. Currently this task is mostly carried out by traditional sanding. However this is a time consuming procedure which can also induce damage to surface fibers and lead to spurious electrode properties. Here we propose an alternative processing technique based on the use of pulsed laser irradiation. The processing parameters that result in selective removal of the electrically insulating resin with minimum surface fiber damage are identified.A quantitative analysis of the electrical contact resistance is presented and the results are compared with those obtained using sanding.

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Section: Impedance-based Cfrp Composite Characterizationmentioning

confidence: 99%

“…electrical resistance change method (ERCM) [34,5,6], electrical impedance spectroscopy (EIS) [32,17,57] and electrical impedance tomography (EIT) [28,15,56].…”

Section: Impedance-based Cfrp Composite Characterizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Laser-based surface preparation of composite laminates leads to improved electrodes for electrical measurements

Almuhammadi

Selvakumaran

Alfano

et al. 2015

Applied Surface Science

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“…by using piezo-actuator-sensor) guided-waves (like Lamb waves) based solutions or acoustical emission signal detectors or piezoimpedance-based solutions [2], [3], [4], [5], [6]. One new interesting research area is the measurement of the electrical resistivity of the carbon fibres directly or by the means of eddy current for the condition monitoring of the properties of the materials [7] .…”

Section: Introductionmentioning

confidence: 99%

Acceleration data acquisition and processing system for structural health monitoring

Herranen

Kuusik

Saar³

et al. 2014

2014 IEEE Metrology for Aerospace (MetroAeroSpace)

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A measurement system has been developed and investigated to acquire and process the acceleration data, from the array of MEMS sensors, for the structural health monitoring applications. The current solutions includes up to 20 analog sensor boards, each with ADXL326 and ADXL377 MEMS type sensors (from Analog Device, with range of ±16g or ±200g), the data acquisition box USB-6259 (from National Instruments) with the 16-bit aggregated 1Ms/s data throughput, and data acquisition and processing software, implemented as an LabView application for the PC.Accuracy, calibration and other metrological issues have been investigated, including noise parameters and its spectra in the system and non-linearity of the sensors. The estimation of the displacements from the acceleration has been investigated, to characterize the non-linearity of the sensors and also for possible special additional measurement feature of the system. It has found, that For calibration of the acceleration and further inclination calculation the use of the natural gravitation of the earth could be used. Accuracy of the retrieving of the inclination data from the 3D acceleration sensors is under research, as well as stability in the time and temperature. Also, an example of the practical usage of the proposed system has been investigated. A section of the real-life composite boat has been equipped with the array of the sensor boards and mechanical pulse excitation has been applied to the construction with sensors. Characteristic frequencies have been extracted in the experiments, for further analysis of the variations and deviations of the parameters of the structures, being under test.

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“…There are several techniques already developed to monitor the crack nucleation and propagation during the fatigue test. These techniques include the acoustic emission diagnostic method [25][26][27], electrical resistance change method [28,29], meandering winding magnetometer (MWM)-array eddy current sensing [30], and thermographic method [31]. All of these techniques require an additional sensor with intensive signal processing.…”

Section: Introductionmentioning

confidence: 99%

A Displacement Controlled Fatigue Test Method for Additively Manufactured Materials

et al. 2019

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A novel adaptive displacement-controlled test setup was developed for fatigue testing on mini specimens. In property characterization of additive manufacturing materials, mini specimens are preferred due to the specimen preparation, and manufacturing cost but mini specimens demonstrate higher fatigue strength than standard specimens due to the lower probability of material defects resulting in fatigue. In this study, a dual gauge section Krouse type mini specimen was designed to conduct fatigue tests on additively manufactured materials. The large surface area of the specimen with a constant stress distribution and increased control volume as the gauge section may capture all different types of surface and microstructural defects of the material. A fully reversed bending (R = −1) fatigue test was performed on simply supported specimens. In the displacement-controlled mechanism, the variation in the control signal during the test due to the stiffness variation of the specimen provides a unique insight into identifying the nucleation and propagation phase. The fatigue performance of the wrought 304 and additively manufactured 304L stainless steel was compared applying a control signal monitoring (CSM) method. The test results and analyses validate the design of the specimen and the effective implementation of the test bench in fatigue testing of additively manufactured materials.

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Fatigue damage detection of CFRP using the electrical resistance change method

Cited by 13 publications

References 21 publications

Laser-based surface preparation of composite laminates leads to improved electrodes for electrical measurements

Laser-based surface preparation of composite laminates leads to improved electrodes for electrical measurements

Acceleration data acquisition and processing system for structural health monitoring

A Displacement Controlled Fatigue Test Method for Additively Manufactured Materials

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