Durability of Structural Health Monitoring Systems under Impact Loading

Thomas, G.; Khatibi, Akbar Afaghi

doi:10.1016/j.proeng.2017.04.493

Cited by 10 publications

(3 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…History of energy data observed from the piezoelectric sensor is used to localise the different impact. In another work, Thomas et al 24 developed SHM for multiple-impact damage monitoring using piezoelectric wafer active sensors (PWAS) by means of monitoring the force history data from the sensor. Similarly, in future, the study can be carried out to detect the multiple impacts on the polymer composite by monitoring the variation history data in piezoresistive response of the coated glass fibre.…”

Section: Resultsmentioning

confidence: 99%

Nanoparticles-coated glass fibre–based damage localisation and monitoring system for polymer composites

Sasikumar

Balaji

Vinothkumar

2018

Structural Health Monitoring

View full text Add to dashboard Cite

The polymer composites are extensively used as advanced materials for various engineering applications such as aviation, marine, automobile and civil structures because of its unique superior properties. The anisotropic nature of the composite makes it as a complicated material to predict strain and damage induced in it under the real-time loading. In order to improve safety and reliability of these composite materials, the real-time strain induced in the composite needs to monitor continuously. With that focus, nanoparticles such as reduced graphene oxide and nano-nickel-coated glass fibre are fabricated and characterised for damage sensing application for the polymer composites reported in this work. The concept of embedding nanoparticles-coated glass fibres in an array of rows and columns as damage sensor is demonstrated by studying its real-time piezoresistive response under medium-velocity impact. When embedded composites are subjected to impact, the corresponding row and column sensor show variation in the piezoresistance. Thus, by monitoring the piezoresistance of the coated glass fibre, the damage and its location can be predicted. Thus, localisation and degree of damage induced in the polymer composites can be predicted by monitoring the piezoresistance of the embedded glass fibre under impact loading.

show abstract

Section: Resultsmentioning

confidence: 99%

Nanoparticles-coated glass fibre–based damage localisation and monitoring system for polymer composites

Sasikumar

Balaji

Vinothkumar

2018

Structural Health Monitoring

View full text Add to dashboard Cite

show abstract

“…For that, the authors propose an algorithm for temperature compensation based on cross correlation, where the CCD index is applied to narrow bands of frequency but covering the total analysed frequency band. Thomas and Khatibi [50] evaluated the integrity of surface mounted and embedded PWAS on carbon fibre/epoxy composites under repeated impact loading, resorting to electromechanical impedance and capacitance measurements. Both methods revealed the superior integrity of embedded PWAS.…”

Section: Piezoelectric Sensorsmentioning

confidence: 99%

Sensors for process and structural health monitoring of aerospace composites: A review

Rocha

Semprimoschnig

Nunes

2021

Engineering Structures

158

View full text Add to dashboard Cite

“…In addition, PWASs commonly face issues such as sensor cracking, soldering breakage, and a decline in piezoelectric properties with aging [ 15 ]. These concerns have been highlighted through various tests aimed at promoting degradation mechanisms on mounted and free PWASs, including impact loading [ 16 , 17 ], quasi-static and fatigue loading [ 18 , 19 , 20 ], vibration [ 19 , 21 ], pressurization (altitude) [ 19 , 20 ], radiation [ 22 , 23 , 24 ], cryogenic [ 18 , 25 , 26 ], and high-temperature cycling [ 18 , 19 , 21 , 27 ], as well as humidity and submersion in diverse fluids [ 18 , 20 ]. In all these instances, electromechanical impedance (EMI) measurements were the preferred testing method for assessing the performance of PWASs upon accrued damage.…”

Section: Introductionmentioning

confidence: 99%

Durability Assessment of Bonded Piezoelectric Wafer Active Sensors for Aircraft Health Monitoring Applications

Eiras,

Gavérina,

Roche

2024

Sensors

View full text Add to dashboard Cite

This study conducted experimental and numerical investigations on piezoelectric wafer active sensors (PWASs) bonded to an aluminum plate to assess the impact of bonding degradation on Lamb wave generation. Three surface-bonded PWASs were examined, including one intentionally bonded with a reduced adhesive to create a defective bond. Thermal cyclic aging was applied, monitoring through laser Doppler vibrometry (LDV) and static capacitance measurements. The PWAS with the initially defective bond exhibited the poorest performance over aging cycles, emphasizing the significance of the initial bond condition. As debonding progressed, modifications in electromechanical behavior were observed, leading to a reduction in wave amplitude and distortion of the generated wave field, challenging the validity of existing analytical modeling of wave-tuning curves for perfectly bonded PWASs. Both numerical simulations and experimental observations substantiated this finding. In conclusion, this study highlights the imperative of a high-integrity bond for the proper functioning of a guided wave-based structural health monitoring (SHM) system, emphasizing ongoing challenges in assessing SHM performance.

show abstract

Durability of Structural Health Monitoring Systems under Impact Loading

Cited by 10 publications

References 8 publications

Nanoparticles-coated glass fibre–based damage localisation and monitoring system for polymer composites

Nanoparticles-coated glass fibre–based damage localisation and monitoring system for polymer composites

Sensors for process and structural health monitoring of aerospace composites: A review

Durability Assessment of Bonded Piezoelectric Wafer Active Sensors for Aircraft Health Monitoring Applications

Contact Info

Product

Resources

About