Damage detection in quasi-isotropic composite bends using ultrasonic feature guided waves

Yu, Xudong; Ratassepp, Madis; Fan, Zheng

doi:10.1016/j.compscitech.2017.01.011

Cited by 62 publications

(26 citation statements)

References 40 publications

(55 reference statements)

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“…To capture the trends in the ultrasonic measurements across a wide range of frequencies (0.2-2 MHz), the energy of the T-mode and R-mode ultrasonic signals was calculated based on the Parseval's theorem. According to Parseval's theorem (also called the Energy theorem or Rayleigh's theorem), the signal energy (E) can be obtained per Equation 1 (Chew, 1995;Dines & Kak, 1979;Yu et al, 2017):…”

Section: 1029/2020jb019526mentioning

confidence: 99%

Illumination of Damage in Intact Rocks by Ultrasonic Transmission‐Reflection and Digital Image Correlation

2020

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Laboratory‐scale experiments on intact rocks are critical to the development of physics‐based fundamental understanding of various geophysical phenomena. In this work, the capability of ultrasonic wave transmission (T‐mode) and reflection (R‐mode) to monitor damage progression in uniaxially loaded prismatic intact rock specimens has been analyzed, as it is imperative to study the observations and document the capabilities of these techniques in a controlled environment. This study is novel in the sense that the R‐mode linear ultrasonic testing (LUT) has been rarely employed in studying intact rock damage processes in a laboratory setting, with most of the studies utilizing a direct transmission (T‐mode) approach or focusing on macroscopically fractured material. The two‐dimensional digital image correlation (2‐D DIC) full‐field strain measurement approach was also used in‐sync with the LUT monitoring to explicitly correlate the stress‐induced damage in the specimens with the changes observed in the ultrasonic (T‐mode and R‐mode) signals. The results show that both the T‐mode and R‐mode LUT approaches are sensitive to detect the evolution of tensile and shear damage in the specimens, with the R‐mode ultrasonic signals showing higher degree of sensitivity to the damage in the rocks, immediately following the initiation of damage in the rock volume.

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Section: 1029/2020jb019526mentioning

confidence: 99%

Illumination of Damage in Intact Rocks by Ultrasonic Transmission‐Reflection and Digital Image Correlation

2020

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“…[3][4][5][6] Among the existing SHM techniques, the guided wave (GW)-based SHM method is popular. [7][8][9][10][11][12][13][14][15][16][17][18][19] It has been widely studied for its fast scanning capabilities, low cost, long-range inspection, inaccessible testing, and sensitivity to small damage. Besides, it can cover a relatively large monitoring area with a small number of sensors and can also be applied online both for damage monitoring and impact monitoring.…”

Section: Introductionmentioning

confidence: 99%

A stretchable and large-scale guided wave sensor network for aircraft smart skin of structural health monitoring

Wang

Qiu

Luo

et al. 2019

Structural Health Monitoring

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Aircraft smart skin technology requires the integration of large-scale, lightweight, and integrative sensor networks with aircraft structural skin, but it is difficult to directly manufacture such sensor networks in a large-scale, low-cost, reliable, and simple way. To study this issue, a design and manufacturing method of a stretchable and large-scale guided wave sensor network is proposed in this article. The key principle of the method is to design and manufacture the guided wave sensor network in a limited scale and expand it in a large-scale for aircraft smart skin of structural health monitoring. To ensure the excellent stretchability of the network, the design method of a serpentine-based fractal island-interconnect structure combined with the flexible printed circuit manufacturing process is proposed. The whole manufacturing process of the guided wave sensor network is realized by the mature flexible printed circuit process and the piezoelectric transducers (referred to as PZTs) are integrated with the network by reflow soldering which is compatible with the flexible printed circuit process, which greatly reduce manufacturing costs, simplify manufacturing process, and improve the yield and stability of the network. The guided wave sensor network can be uniaxially stretched to 500% of its original size and work well when fully expanded to cover 2500% of its original area. The test results of guided wave response show that the PZTs on the network can excite and receive guided wave signal normally. In addition, the network is placed on the surface of a carbon fiber composite laminate with stiffeners and the validation results show that the network can be applied to both active and passive guided wave–based structural health monitoring of composite structures, including damage imaging and impact imaging.

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“…Semianalytical finite-element (SAFE) analysis will be used throughout this study to characterize the ultrasonic behavior in the wedge-like structures. SAFE is an established method for evaluating wave behavior in waveguides of arbitrarily shaped cross section (for example, railway lines [11], [12], beams [12], [13], and stiffeners [14]- [16]) and in feature-guided waves (such as bends [17], [18] and welds [14], [19]). This study extends the current capabilities by specifically addressing waves in irregular wedge-like features and at low frequencies where dispersion may be significant.…”

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confidence: 99%

A Guided Wave Inspection Technique for Wedge Features

Corcoran

Leinov

Jeketo

et al. 2020

IEEE Trans. Ultrason., Ferroelect., Freq. Contr.

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Damage detection in quasi-isotropic composite bends using ultrasonic feature guided waves

Cited by 62 publications

References 40 publications

Illumination of Damage in Intact Rocks by Ultrasonic Transmission‐Reflection and Digital Image Correlation

Illumination of Damage in Intact Rocks by Ultrasonic Transmission‐Reflection and Digital Image Correlation

A stretchable and large-scale guided wave sensor network for aircraft smart skin of structural health monitoring

A Guided Wave Inspection Technique for Wedge Features

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