Noncontact Sonic NDE and Defect Imaging Via Local Defect Resonance

Solodov, Igor; Rahammer, Markus; Gulnizkij, Nikolai; Kreutzbruck, Marc

doi:10.1007/s10921-016-0364-6

Cited by 28 publications

(14 citation statements)

References 17 publications

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“…Recently, nonlinear ultrasound based NDE measurements have showed promising results to characterize microstructural changes in a material. 21 Literature studies reveal that the nonlinear parameter is sensitive to both changes in dislocation density, and amount of precipitate formation during solution annealing of M250 grade maraging steels. 22 Attempts have also been made in using these techniques to study hydrogen loading into zircaloy, and there is an existing body of literature that attempted to assess the hydrogen levels in zircaloy (up to 100 mg kg À1 or ppm) using combinations of ultrasound and eddy current based NDE techniques.…”

Section: Introductionmentioning

confidence: 99%

An electrochemical technique for controlled dissolution of zirconium based components of light water reactors

et al. 2019

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Section: Introductionmentioning

confidence: 99%

An electrochemical technique for controlled dissolution of zirconium based components of light water reactors

et al. 2019

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“…Such an effect is typically known as “nonlinear LDR” [ 121 ], and the combination of thermosonics with this effect is known as “Nonlinear Ultrasonic Stimulated Thermography” (NUST). Solodov et al [ 122 ] used NUST to improve the driving frequency-selection process for the generation of frictional heat on a composite sample using commercial loudspeakers. They matched the NUST thermal results with those obtained using a shearography system.…”

Section: Ultrasonic Stimulated Thermographymentioning

confidence: 99%

Recent Advances in Active Infrared Thermography for Non-Destructive Testing of Aerospace Components

Ciampa

Mahmoodi

Pinto

et al. 2018

Sensors

366

185

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Active infrared thermography is a fast and accurate non-destructive evaluation technique that is of particular relevance to the aerospace industry for the inspection of aircraft and helicopters’ primary and secondary structures, aero-engine parts, spacecraft components and its subsystems. This review provides an exhaustive summary of most recent active thermographic methods used for aerospace applications according to their physical principle and thermal excitation sources. Besides traditional optically stimulated thermography, which uses external optical radiation such as flashes, heaters and laser systems, novel hybrid thermographic techniques are also investigated. These include ultrasonic stimulated thermography, which uses ultrasonic waves and the local damage resonance effect to enhance the reliability and sensitivity to micro-cracks, eddy current stimulated thermography, which uses cost-effective eddy current excitation to generate induction heating, and microwave thermography, which uses electromagnetic radiation at the microwave frequency bands to provide rapid detection of cracks and delamination. All these techniques are here analysed and numerous examples are provided for different damage scenarios and aerospace components in order to identify the strength and limitations of each thermographic technique. Moreover, alternative strategies to current external thermal excitation sources, here named as material-based thermography methods, are examined in this paper. These novel thermographic techniques rely on thermoresistive internal heating and offer a fast, low power, accurate and reliable assessment of damage in aerospace composites.

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“…This can be implemented as a result of the interaction between the acoustic/ultrasonic waves and the damaged area at frequencies that match the defect resonance [55][56][57][58][59]. Solodov et al [60] employed Nonlinear Ultrasonic Stimulated Thermography (NUST) to improve the method for the selection of the driving frequency, which is used for the heat generation on the surface of materials undergone the test. It is worth to note that commercial loudspeakers were used to generate the required frictional heat.…”

Section: Applications Of Thermography For Aircraft Compositesmentioning

confidence: 99%

Diagnosis of Composite Materials in Aircraft Applications–Brief Survey of Recent Literature

Alhammad¹,

Fragonara²,

Avdelidis³

2020

Preprint

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Diagnosis and prognosis of failures for aircrafts’ integrity are some of the most important regular functionalities in complex and safety-critical aircraft structures. Further, development of failure diagnostic tools such as Non-Destructive Testing (NDT) techniques, in particular, for aircraft composite materials, has been seen as a subject of intensive research over the last decades. The need for diagnostic and prognostic tools for composite materials in aircraft applications rises and draws increasing attention. Yet, there is still an ongoing need for developing new failure diagnostic tools to respond to the rapid industrial development and complex machine design. Such tools will ease the early detection and isolation of developing defects and the prediction of damages propagation; thus allowing for early implementation of preventive maintenance and serve as a countermeasure to the potential of catastrophic failure. In this paper, following a short introductory summary and definitions, this paper provides a brief literature review of recent research on failure diagnosis of composite materials with an emphasis on the use of NDT techniques in aerospace industry. In addition to this, within a some of significant NDT application extents, prognosis of composites is also briefly discussed.

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Noncontact Sonic NDE and Defect Imaging Via Local Defect Resonance

Cited by 28 publications

References 17 publications

An electrochemical technique for controlled dissolution of zirconium based components of light water reactors

An electrochemical technique for controlled dissolution of zirconium based components of light water reactors

Recent Advances in Active Infrared Thermography for Non-Destructive Testing of Aerospace Components

Diagnosis of Composite Materials in Aircraft Applications–Brief Survey of Recent Literature

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