CFRP barely visible impact damage inspection based on an ultrasound wave distortion indicator

Zhang, Xiaofei; Wu, Xuan; He, Yunze; Yang, Shuming; Chen, Sheng; Zhang, Shigang; Zhou, Di

doi:10.1016/j.compositesb.2018.12.092

Cited by 39 publications

(12 citation statements)

References 34 publications

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“…However, ultrasonic detection is a kind of contact detection, which requires to add the coupling agent at the probe to reduce the attenuation of the signal when the ultrasonic signal enters the detection material, which will cause pollution to the surface of the test parts, and the rapid scanning detection cannot be carried out, especially for large parts [91,92].…”

Section: Ultrasound Detection Methodsmentioning

confidence: 99%

A review of FMLs performance test methods and index evaluation

et al. 2023

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With its excellent fatigue performance and high damage tolerance and other irreplaceable advantages, FMLs have gradually increased the demand in aerospace, rail transit, ship and other fields, and have put forward higher requirements for the speed and accuracy of its performance test and index evaluation. In this paper, the methods of performance test, analysis and index evaluation of FMLs are introduced from three aspects with carbon fiber and composite materials, mechanical properties and numerical simulation technology, details the common test methods, the latest technology and progress, and analyzes their advantages and disadvantages, so as to provide direction and reference for the performance test method and index evaluation of FMLs. Finally, the main development directions of the current performance testing methods and index evaluation of FMLs are briefly discussed.

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Section: Ultrasound Detection Methodsmentioning

confidence: 99%

A review of FMLs performance test methods and index evaluation

et al. 2023

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“…It is a good basis for detecting damage to scattering radiators, but information about the local minima of the correlation coefficient is important for locating the nonlinear scattering radiators. X. Zhang et al [99] proposed a nonlinear Lamb wave imaging technology to detect barely visible impact damage (BVID) in carbon fibre reinforced composites (CFRP). They did this at three different impact energies with corresponding impact surfaces.…”

Section: Wave Propagationmentioning

confidence: 99%

Nonlinear Vibration Analysis of Beam and Plate with Closed Crack: A Review

Tewelde

Krawczuk

2022

Acta Mechanica Et Automatica

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The effect of nonlinearity is high sensitivity in damage detection, especially for closed cracks and delamination. This review illustrates the results of several researchers dealing with nonlinear effects caused by the closure of cracks in the structure, i.e., beam and plate structures. Early detection of damage is an important aspect for the structure and, therefore, continuous progress is being made in developing new and effective methods that use nonlinear effects for early detection of damage and barely visible cracks, i.e., closed cracks and delamination, as well as for the determination of crack size and location. After analysing various methods, the merits, drawbacks and prospects of a number of nonlinear vibration methods for structural damage detection are discussed, and recommendations are made for future researchers.

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“…In most cases, the above scenarios are classified as low‐velocity impacts. Compared to high‐speed and hypervelocity impacts, such impacts do not cause particularly visible signs of damage to the surface of the composite structure, but irreversible damage often occurs to the interior of the structure, which not only is detrimental to the safety of the crew for inspection but also reduces the service life of the aircraft 5–7 . Consequently, the impact damage resistance of CFRP structures has gained significant attention.…”

Section: Introductionmentioning

confidence: 99%

Influence of various damage mechanisms on the low‐velocity impact response of composite laminates

Zou,

Gao,

2023

Polymer Composites

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This study exhibits the effect of different damage mechanisms on the mechanical behavior of composite laminates subjected to low‐velocity impact load. To achieve this, seven low‐velocity impact energies were applied to laminates with five different thicknesses and four unique stacking sequences. The extent of damage was quantitatively evaluated through contact measurements and ultrasonic C‐scan techniques. Numerical simulations, showing good agreement with experimental results, characterized the distribution and evolution of damage within the laminates. The findings reveal that when matrix and delamination damage are predominant, the dent depth increases slowly and is visually invisible, while the delamination area expands almost linearly. Conversely, When fiber damage prevails, the laminate absorbs more energy, leading to rapid increases in dent depth, the appearance of visible cracks, and the occurrence of sharp fluctuations with multiple peaks in contact force and displacement curves. Nonetheless, the delamination area and projection tend to be stable and unchanged. Furthermore, alterations in thickness and stacking sequence directly affect the damage characteristics and energy absorption properties. This research offers valuable theoretical insights and serves as a reference for enhancing the comprehension of the failure mechanism of laminates and optimizing their performance.Highlights Demonstrate the utility of dent depth in identifying changes in damage mechanisms. Evaluate the delamination damage of laminates after impacts by ultrasonic C‐scan techniques. Reveal the regulation of impact response parameters for different damage mechanisms. Investigate the effect of variation in thickness on damage characteristics and energy absorption. Evaluate the impact resistance of laminates with different stacking sequences.

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CFRP barely visible impact damage inspection based on an ultrasound wave distortion indicator

Cited by 39 publications

References 34 publications

A review of FMLs performance test methods and index evaluation

A review of FMLs performance test methods and index evaluation

Nonlinear Vibration Analysis of Beam and Plate with Closed Crack: A Review

Influence of various damage mechanisms on the low‐velocity impact response of composite laminates

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