Impact damage detection of a carbon-fibre-reinforced-polymer plate employing self-sensing time-domain reflectometry

2015 ◽  
Vol 130 ◽  
pp. 174-179 ◽  
Author(s):  
Akira Todoroki ◽  
Kazuhiro Yamada ◽  
Yoshihiro Mizutani ◽  
Yoshiro Suzuki ◽  
Ryosuke Matsuzaki
Keyword(s):  
Carbon Fibre ◽  
Damage Detection ◽  
Time Domain ◽  
Impact Damage ◽  
Time Domain Reflectometry ◽  
Reinforced Polymer ◽  
Carbon Fibre Reinforced Polymer ◽  
Fibre Reinforced Polymer ◽  
Sensing Time

Analysis of barely visible impact damage severity with ultrasonic guided Lamb waves

2019 ◽  
Vol 19 (4) ◽  
pp. 1104-1122 ◽  
Author(s):  
Ifan Dafydd ◽  
Zahra Sharif Khodaei
Keyword(s):  
Carbon Fibre ◽  
Lamb Waves ◽  
Impact Damage ◽  
Laser Doppler Vibrometer ◽  
Laser Doppler ◽  
Acquisition Time ◽  
Reinforced Polymer ◽  
Carbon Fibre Reinforced Polymer ◽  
Text Mode ◽  
Fibre Reinforced Polymer

Barely visible impact damage is one of the most common types of damage in carbon-fibre-reinforced polymer composite structures. This article investigates the potential of using ultrasonic guided Lamb waves to characterise the through thickness severity of barely visible impact damage in thin carbon-fibre-reinforced polymer structures. In the first step, a laser Doppler vibrometer was used to capture the full damage interaction of the wavefield excited by a piezoelectric actuator. Damage-scattered wavefield for four different severities were studied to find the best parameters for characterising the severity of damage. To reduce the overall acquisition time and size of data collected using the laser Doppler vibrometer, the measured signals were reconstructed from a singular broadband chirp response using a post-processing algorithm. From the full wavefield analysis obtained at a wide range of toneburst frequencies, the results showed that barely visible impact damage severity could be characterised using ultrasonic guided Lamb waves and that the [Formula: see text] mode, dominant at lower frequencies, gave better results than the [Formula: see text] mode. In the second step, the parameters for characterising the damage severity were applied to a sparse network of transducers as an in-service structural health monitoring methodology. The damage was successfully detected and located. In addition, the transducer path close to the predicted damage location was utilised to successfully quantify the damage severity based on the proposed damage index.

Temperature and damage influence on electromechanical impedance method used for carbon fibre–reinforced polymer panels

2016 ◽  
Vol 28 (6) ◽  
pp. 782-798 ◽  
Author(s):  
Tomasz Wandowski ◽  
Pawel H Malinowski ◽  
Wieslaw M Ostachowicz
Keyword(s):  
Carbon Fibre ◽  
Damage Detection ◽  
Low Frequency ◽  
Guided Wave ◽  
Impedance Method ◽  
Electromechanical Impedance ◽  
Reinforced Polymer ◽  
Guided Wave Propagation ◽  
Carbon Fibre Reinforced Polymer ◽  
Fibre Reinforced Polymer

This article deals with damage detection process under varying temperature. Carbon fibre–reinforced polymer samples are investigated using electromechanical impedance method. In the article, influence of changing temperature on resistance in electromechanical impedance is investigated. Authors propose new approach for compensation of temperature influence on damage detection. Damage detection is based on root mean square deviation index. Due to strong damping of utilized composite material, low-frequency range is utilized in this research. Real part of electromechanical impedance is measured for frequency band 1–20 kHz. Damage is in the form of artificially made delamination with different sizes. Authors also discuss the problem of influence of structure’s boundary condition on low-frequency measurements. In the research, scanning laser vibrometry for guided wave propagation method is utilized for visualization of the introduced delamination.

scholarly journals Hierarchical approach for uncertainty quantification and reliability assessment of guided wave-based structural health monitoring

2020 ◽  
pp. 147592172094064
Author(s):  
Nan Yue ◽  
M.H. Aliabadi
Keyword(s):  
Structural Health Monitoring ◽  
Carbon Fibre ◽  
Health Monitoring ◽  
Impact Damage ◽  
Guided Wave ◽  
Hierarchical Approach ◽  
Structural Health ◽  
Reinforced Polymer ◽  
Carbon Fibre Reinforced Polymer ◽  
Fibre Reinforced Polymer

In this article, a hierarchical approach is proposed for the design and assessment of a guided wave-based structural health monitoring system for the detection and localisation of barely visible impact damage in composite airframe structures. The hierarchical approach provides a systemic and practical way to establish guided wave-based structural health monitoring systems for different structures in the presence of uncertainties and to quantify system performance. The proposed approach is carried out in four steps: (1) determine optimal sensor placement for the target structure and its plausible impact scenarios, (2) set detection threshold for global damage index based on the noise level present in the required environmental and operations conditions, (3) detect damage in critical locations and quantify detection performance by calculating the probability of detection, probability of false alarm and detection accuracy and (4) locate the detected damage while also quantifying the accuracy of location estimation and the probability of correctly indicating if the damage is in an area critical to the integrity of the structure. The proposed approach is demonstrated in aircraft carbon fibre-reinforced polymer structures from coupon level (simple flat panels) to sub-component level (large flat panel with multiple carbon fibre-reinforced polymer stringers and aluminium frames) for the detection and localisation of barely visible impact damage.

Damage Evaluation of Carbon-Fibre Reinforced Polymer Composites Using Electromagnetic Coupled Spiral Inductors

2015 ◽  
Vol 24 (3) ◽  
pp. 096369351502400 ◽  
Author(s):  
Z. Li ◽  
A. D. Haigh ◽  
C. Soutis ◽  
A.A.P. Gibson ◽  
R. Sloan ◽  
...  
Keyword(s):  
Carbon Fibre ◽  
Impact Damage ◽  
Reinforced Polymer ◽  
Micro Cracks ◽  
Fibre Composites ◽  
Carbon Fibre Reinforced Polymer ◽  
Spiral Inductors ◽  
Fibre Reinforced Polymer ◽  
Carbon Fibre Composites ◽  
Subsurface Defects

This paper presents the application of electromagnetic coupled spiral inductors for the non-destructive evaluation of carbon-fibre reinforced polymer (CFRP) plates. Three types of representative damage in carbon fibre composites are evaluated, i.e. barely visible impact damage (BVID), subsurface defects and internal micro-cracks. This work indicates that the size and location of the subsurface defects can be quantitatively assessed from the signal data acquisition.

In situ fabrication of carbon fibre–reinforced polymer composites with embedded piezoelectrics for inspection and energy harvesting applications

2020 ◽  
Vol 31 (16) ◽  
pp. 1910-1919
Author(s):  
Xue Yan ◽  
Charles RP Courtney ◽  
Chris R Bowen ◽  
Nicholas Gathercole ◽  
Tao Wen ◽  
...  
Keyword(s):  
Carbon Fibre ◽  
Damage Detection ◽  
Polymer Composites ◽  
Reinforced Polymer ◽  
Fibre Composites ◽  
Carbon Fibre Reinforced Polymer ◽  
Fibre Reinforced Polymer ◽  
The Impact ◽  
Piezoelectric Devices

Current in situ damage detection of fibre-reinforced composites typically uses sensors which are attached to the structure. This may make periodic inspection difficult for complex part geometries or in locations which are difficult to reach. To overcome these limitations, we examine the use of piezoelectric materials in the form of macro-fibre composites that are embedded into carbon fibre–reinforced polymer composites. Such a multi-material system can provide an in situ ability for damage detection, sensing or energy harvesting. In this work, the piezoelectric devices are embedded between the carbon fibre prepreg, and heat treated at elevated temperatures, enabling complete integration of the piezoelectric element into the structure. The impact of processing temperature on the properties of the macro-fibre composites are assessed, in particular with respect to the Curie temperature of the embedded ferroelectric. The mechanical properties of the carbon fibre–reinforced polymer composites are evaluated to assess the impact of the piezoelectric on tensile strength. The performance of the embedded piezoelectric devices to transmit and receive ultrasonic signals is evaluated, along with the potential to harvest power from mechanical strain for self-powered systems. Such an approach provides a route to create multi-functional materials.

scholarly journals Active infrared sensing of impact damage in carbon fibre reinforced polymer

2014 ◽  
Author(s):  
Tong Kuan Chuah ◽  
Liping Zhao ◽  
Shaochun Ye ◽  
Kwek Tze Tan ◽  
Pramoda Kumari Pallathadka ◽  
...  
Keyword(s):  
Carbon Fibre ◽  
Impact Damage ◽  
Infrared Sensing ◽  
Reinforced Polymer ◽  
Carbon Fibre Reinforced Polymer ◽  
Fibre Reinforced Polymer

Influence of Ply Stacking Sequences on the Impact Response of Carbon Fibre Reinforced Polymer Composite Laminates

2019 ◽  
Author(s):  
Kristian Gjerrestad Andersen ◽  
Gbanaibolou Jombo ◽  
Sikiru Oluwarotimi Ismail ◽  
Segun Adeyemi ◽  
Rajini N ◽  
...  
Keyword(s):  
Carbon Fibre ◽  
Polymer Composite ◽  
Composite Laminates ◽  
Impact Response ◽  
Reinforced Polymer ◽  
Carbon Fibre Reinforced Polymer ◽  
Fibre Reinforced Polymer ◽  
The Impact
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