Investigation Into Vibration Characteristic in Vibrothermography

Yin, Li; Ming, Anbo; Zhang, Ruimin; Zhang, Wei

doi:10.1007/s13320-019-0529-x

Cited by 8 publications

(6 citation statements)

References 11 publications

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“…The dynamic model in this work can be confirmed through comparing the results in [5] and [20]. For the simulation results in the two literatures, it is worth pointing out that the ultrasonic frequency in [5] is 20 kHz consistent with this model while the frequency in [20] is 40 kHz. As displayed in Fig.…”

Section: Model Verification and Validationsupporting

confidence: 78%

“…As displayed in Fig. 10, (a) is the frequency domain response of sample velocity in [5] and (b) is the frequency domain response of sample displacement in [20]. It is clearly observed that there are three harmonic components of f (20 kHz), 2f (40 kHz) and 3f (60 kHz) in Fig.…”

Section: Model Verification and Validationmentioning

confidence: 93%

“…Fig. 11 shows the experiment result of sample displacement measurement in [20], (a) the time domain responses and (b) the frequency domain response. The harmonic components 40 kHz, 80 kHz and 120 kHz is be obviously displayed in Fig.…”

Section: Model Verification and Validationmentioning

confidence: 99%

“…Moreover, He et al [18] evaluated the barely visible impact damage of CFRP (carbon fiber reinforced plastic) laminates using NUST. In previous researches, we have investigated the vibration characteristic of sample based on a FEM model [19] and a dynamic model [20] when the sample was stimulated under ultrasonic.…”

Section: Introductionmentioning

confidence: 99%

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Effects of Contact Interface Roughness and Sample Mass on Vibration Characteristics in Ultrasonic Infrared Thermography

et al. 2020

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Nonlinear vibration plays a vital role in ultrasonic infrared thermography testing due to contact-collision effect between a horn and sample, and the effects of contact roughness and sample mass on vibration characteristic of a horn-sample system are deeply investigated in this paper. A two-degree-offreedom dynamic model based on GW contact model is proposed for exploring the vibration characteristic of a horn-sample system. Then, the vibration characteristics of the horn and sample are calculated under different contact roughness and different sample mass. The results demonstrate that the contact roughness does not influence vibration characteristic of horn, but there are mainly 2f and 3f except the first harmonic f in velocity responses of the sample. Besides, the amplitude of sample velocity increases with the increase of real contact area as the contact interface is smoother, and there is a 1.8-fold approximate relation in the three amplitude of harmonic f under different contact roughness. On the other hand, with the increase of sample mass, the harmonic f becomes the main component and higher harmonics decreases little by little. This work will be extraordinarily meaningful to optimize testing parameters and evaluate surface quality of sample in ultrasonic infrared thermography testing.

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Section: Model Verification and Validationsupporting

confidence: 78%

Section: Model Verification and Validationmentioning

confidence: 93%

Section: Model Verification and Validationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effects of Contact Interface Roughness and Sample Mass on Vibration Characteristics in Ultrasonic Infrared Thermography

et al. 2020

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“…As mentioned above, the conventional VT usually uses the high-power ultrasonic horn as an actuator to stimulate the specimen by intermittent collisions [40,41]. The ultrasonic horn shown in figure 2(a) is mainly composed of piezoceramic stacks and an ultrasonic amplitude transformer.…”

Section: The Proposed Lvt Techniquementioning

confidence: 99%

Low-power vibrothermography detection technique for surface cracks on composite sucker rod

Liu¹,

Xu²,

Zhang³

et al. 2023

Smart Mater. Struct.

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Composite sucker rods are becoming increasingly popular in oil fields owing to their light weight and corrosion resistance. However, various defects may appear in the manufacturing and service of sucker rods. Unfortunately, research on defect detection is still insufficient for composite sucker rods. This study explores a surface crack detection technique for composite sucker rods based on low-power vibrothermography (LVT). First, an improved low-power piezoceramic actuator with a curved bottom is designed for rod-like structure. Second, the entire processes of LVT-based surface crack detection, including excitation signal generation, mechanical wave propagation, and heat generation at defects, are simulated and analyzed using the finite element method. The heat generation mechanism and characteristic at cracks are revealed by coupled thermo-electro-mechanical analysis. The superiority of the improved actuator is reflected by comparison with the conventional actuator. In addition, the simulation investigates the optimal excitation signal amplitude and circumferential angle between the actuator and the crack. Finally, a series of LVT detection experiments were conducted on a composite sucker rod with surface cracks, which not only proved the effectiveness of the LVT, but also validated the conclusions of the numerical simulations. The maximum temperature rise at the crack is 5.54 °C by using the improved actuator. Numerical simulation and experimental results demonstrate that the surface cracks of the composite sucker rod can be effectively detected using LVT with an improved piezoceramic actuator. This study provides a new direction for extending vibrothermography to the non-destructive testing of composite rod-like structures.

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New Trends of Damage Detection and Identification Based on Vibrothermography in Composite Materials

et al. 2023

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Investigation Into Vibration Characteristic in Vibrothermography

Cited by 8 publications

References 11 publications

Effects of Contact Interface Roughness and Sample Mass on Vibration Characteristics in Ultrasonic Infrared Thermography

Effects of Contact Interface Roughness and Sample Mass on Vibration Characteristics in Ultrasonic Infrared Thermography

Low-power vibrothermography detection technique for surface cracks on composite sucker rod

New Trends of Damage Detection and Identification Based on Vibrothermography in Composite Materials

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