Quantitative Ultrasonic Coda Wave (Diffuse Field) NDE of Carbon-Fiber Reinforced Polymer Plates

Livings, Richard

doi:10.31274/etd-180810-5180

Cited by 5 publications

(7 citation statements)

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“…Ultrasound testing to study the health of materials has been widely used and developed. It is a technique existing since middle of the 20 th century [3]. One instance of ultrasound use is in testing to detect flaws in concrete of civil structures, using a practice called ultrasonic echo testing [4].…”

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confidence: 99%

“…Monitoring of coda waves to examine alterations in structures over time has been explored for various materials. Some experimentation researches the variation of coda waves in carbon-fiber reinforced polymer (CFRP) specimens as they develop fractures [3]. The experiments present an instrumentation where sensors are semi-permanent or permanently adhered to the specimen.…”

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confidence: 99%

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Ultrasonic Coda Wave Comparison for Quality Control of Manufactured Parts: Proof of Feasibility

Marin-Cortes¹

2020

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Manufactured parts are a staple of modern urban life, visible in homes (e.g., kitchen appliances), offices (e.g., printers), the automobile and aerospace industries (e.g., body parts), and more. This M.S. project intended to determine whether ultrasonic testing could be used in a simple and rapid manner to perform quality control of manufactured parts. Ultrasonic testing is employed for this purpose using two surface-coupled transducers, one being a transmitter and the other one a receiver. An ultrasonic pulse, which is generated by the transmitting transducer, propagates through the part, collecting information about material and geometry, as well as potential unwanted features. The resulting response is recorded at the receiving transducer for a long duration, i.e. until the wave amplitude has dampened out. Coda wave analysis, which studies the later portions of a recorded signal, is then used to compute a similarity index between a signal from a part and a signal from a reference part that has been examined and approved. Coda wave fields have been found significantly more sensitive to minute differences in two signals compared to the first wave arrival. This MS project report introduces the setup and instrumentation, testing methodology, coda wave analysis and similarity indices, and discusses the feasibility of the proposed approach on a set of manufactured parts made of different materials with different alterations. ULTRASONIC CODA WAVE COMPARISON FOR QUALITY CONTROL OF MANUFACTURED PARTS: PROOF OF FEASIBILITY I. Introduction/Background Manufactured parts are ubiquitous in modern urban life, visible in homes (e.g., kitchen appliances), offices (e.g., pens, printers), the automobile and aerospace industries, and more. Manufactured parts are defined as physical elements produced in a mechanized manufacturing process, where the elements are either a part of larger product or the final product by itself. These parts can be manufactured of a myriad of materials. They can be of a single material, such as a wood block, steel plate, or a single polymer piece, or they can be a composite, consisting of multiple integrated materials such as a CFRP laminate. Numerous techniques have been developed for the quality control of these parts. The techniques include physical and chemical principles, ranging from laser-induced spectroscopy to measurement of oxygen to electromagnetic spectroscopy [1]. The techniques apply for traditional subtractive manufacturing as well as the emerging additive manufacturing process [2].

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Ultrasonic Coda Wave Comparison for Quality Control of Manufactured Parts: Proof of Feasibility

Marin-Cortes¹

2020

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“…Category 1 includes those damages which go undetected by scheduled inspection and allowable manufacturing defects. Including design tolerances of such defects with composite inherent damage tolerance thresholds make designers over design components (Livings, 2017). Ultrasonic guided waves travel farther than bulk waves, and upon interaction with the damage, they generate mechanical vibrations.…”

Section: Department Of Transportation Federal Aviation Administration and Federal Aviationmentioning

confidence: 99%

“…In fact, damage need not to be in the direct path of coda waves. However, this advantage is also disadvantageous because environmental effects interfere with information from the testing specimen (Livings, 2017). Coda wave is defined by many researchers (Snieder et al, 2006), (Anugonda et al, 2001), (Egle, 1981) as late-arriving elastic waves with multiple scatter from defects and boundaries which superimpose at the receiver with no discernable wave modes.…”

Section: Department Of Transportation Federal Aviation Administration and Federal Aviationmentioning

confidence: 99%

“…The analysis from signal differencing in time-domain, spectral-domain, and local temporal coherence shows a good correlation in detecting and characterizing damage. The extension of this work included carbon fiber reinforced polymer (CFRP) with a focus to detect changes caused by small drilled in composites (Livings, 2017). In the following chapters, an outline of this work, experiments, and results are explained.…”

Section: Department Of Transportation Federal Aviation Administration and Federal Aviationmentioning

confidence: 99%

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Low-velocity impact damage detection using coda waves on CFRP laminates

Sharma¹

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Static and dynamic diffuse wave inspection of delaminations in carbon fiber reinforced composites

Zhu,

Zhang,

Wang

et al. 2024

Ultrasonics

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Quantitative Ultrasonic Coda Wave (Diffuse Field) NDE of Carbon-Fiber Reinforced Polymer Plates

Cited by 5 publications

References 100 publications

Ultrasonic Coda Wave Comparison for Quality Control of Manufactured Parts: Proof of Feasibility

Ultrasonic Coda Wave Comparison for Quality Control of Manufactured Parts: Proof of Feasibility

Low-velocity impact damage detection using coda waves on CFRP laminates

Static and dynamic diffuse wave inspection of delaminations in carbon fiber reinforced composites

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