Design of Embedded Wireless Sensors for Real-Time and In-Situ Strain Sensing of Fiber Reinforced Composites

Qhobosheane, Relebohile George; Islam, Sujjatul; Elenchezhian, Muthu Ram Prabhu; Vadlamudi, Vamsee; Raihan, Rassel; Reifsnider, Kenneth L.; Shen, Wen

doi:10.12783/shm2019/32238

Cited by 1 publication

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“…This was achieved by comparing the change in voltage from the excitation coil as the magnetization around the composite sample changed with strains. The sensor dependence on the magnetic field applied is shown in the Section 3 (Experimental Methodology) and previous work [13]. Measurements were taken at room temperature using the SR860 Lock-in amplifier with AC excitation signal at 50 kHz.…”

Section: Resultsmentioning

confidence: 99%

“…Measurements were taken at room temperature using the SR860 Lock-in amplifier with AC excitation signal at 50 kHz. Sensor response repeatability was studied in [13], where the authors characterize cyclic loading of the composite sample at different loading rates. The detection device was observed to have consistent results with change in strain and generation of damage precursors.…”

Section: Resultsmentioning

confidence: 99%

“…The fabricated smart composites show variations in magnetization as result of applied stress [12]. Numerous studies [13,14] have contributed to this area in developing smart composites. In this work, Terfenol-D magnetostrictive material was used to develop a smart self-sensing fiber-reinforced composite.…”

Section: Introductionmentioning

confidence: 99%

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Smart Self-Sensing Composite: Piezoelectric and Magnetostrictive FEA Modeling and Experimental Characterization Using Wireless Detection Systems

Qhobosheane

Elenchezhian

Das

et al. 2020

Sensors

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This research work focuses on the development of a piezoelectric magnetostrictive smart composite with advanced sensing capability. The composite piezoelectric property is achieved from the dispersion of single-walled carbon nanotubes (SWCNTs) and the magnetostrictive property from Terfenol-D nanoparticles. Finite element analysis (FEA) is used to examine the feasibility of modelling the piezoelectric (change in electric field) and magnetostrictive (change in magnetic field) self-sensing responses in the presence of applied stress. The numerical work was coupled with a series of mechanical tests to characterize the piezoelectric response, magnetostriction response and mechanical strength. Tensile tests of the composite samples manufactured as is (virgin), samples with SWCNTs, samples with Terfenol-D nanoparticles and samples with both SWCNTs and Terfenol-D nanoparticles were conducted. It was observed that an increase in volume fraction of Terfenol-d nanoparticles increases the change in magnetization, therefore increasing voltage response up to the point of saturation. The optimum change in amplitude was observed with 0.35% volume fraction of Terfenol-D nanoparticles. A constant ratio of SWCNTs was maintained, and maximum change in electrical resistance was at 7.4%. Fracture toughness for the samples with all nanoparticles was explored, and the results showed improved resistance to crack propagation.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%