Non-destructive evaluation (NDE) of composites: acoustic emission (AE)

Huang, Jerry

doi:10.1533/9780857093554.1.12

Cited by 25 publications

(17 citation statements)

References 3 publications

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“…The FE-SEM image shows a dense microstructure with low porosity and a uniform grain size distribution. The bulk density of the BZT-BCT ceramic is 5.59 g/cm 3 , and the relative density is 98.2%. Therefore, the properties of the BZT-BCT ceramic were expected to be good.…”

Section: Resultsmentioning

confidence: 99%

“…Acoustic emission (AE) is a non-destructive testing method [1][2][3] that refers to a phenomenon in which the energy is emitted as an elastic wave when discontinuous, sudden, and transient motion occurs on the surface or inside an elastic body. AE sensors have excellent sensitivity characteristics and detection capabilities regardless of structures or defects [4].…”

Section: Introductionmentioning

confidence: 99%

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Lead-Free AE Sensor Based on BZT–BCT Ceramics

Shin

Kang

Lím

et al. 2021

Sensors

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In this study, an acoustic emission (AE) sensor was fabricated using lead-free Ba(Zr0.2Ti0.8)O3–0.5(Ba0.7Ca0.3)TiO3 (BZT–BCT) ceramics. The acoustic and electromechanical properties of the AE sensor were determined by the shapes of the piezoelectric ceramics. To optimize the AE sensor performance, the shapes of the ceramics were designed according to various diameter/thickness ratios (D/T) = 0.5, 1.0, 1.5, 2.0, 2.5, 3.0. The BZT–BCT ceramic with D/T = 1.0 exhibited excellent values of a piezoelectric charge coefficient (d33), piezoelectric voltage coefficient (g33), and electromechanical coupling factor (kp), which were 370 (pC/N), 11.3 (10−3 Vm/N), and 0.58, respectively. Optimum values of resonant frequency (fr) = 172.724 (kHz), anti-resonant frequency (fa) = 196.067 (kHz), and effective electromechanical coupling factor (keff) = 0.473 were obtained for the manufactured BZT–BCT ceramic with D/T = 1.0. The maximum sensitivity and frequency of the AE sensor made of the BZT–BCT ceramic with a D/T ratio of 1.0 were 65 dB and 30 kHz, respectively.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Lead-Free AE Sensor Based on BZT–BCT Ceramics

Shin

Kang

Lím

et al. 2021

Sensors

View full text Add to dashboard Cite

show abstract

“…Secondly, flaws that do not move or grow cannot be detected [20]. Moreover, the noise, attenuation and anisotropic properties of polymer matrix composites (PMCs) may pose challenges for the AE data analysis [15]. Slight movement of riveted or bolted joints can also generate acoustic signals.…”

Section: Acoustic Emission Testingmentioning

confidence: 99%

“…AE monitoring of PMCs can be used to detect matrix cracking, delamination, debonding, or fibre breakage. AE measurements can be also used for real-time and continuous monitoring of the structure condition [15,3].…”

Section: Acoustic Emission Testingmentioning

confidence: 99%

A Brief Review on NDT&E Methods For Structural Aircraft Components

Wronkowicz-Katunin

2018

Fatigue of Aircraft Structures

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The paper presents a summary of non-destructive testing and evaluation (NDT&E) methods applied in inspections of structural aircraft components. This brief review covers the most commonly applied methods such as visual and penetrant inspections, tap-testing, eddy current inspections, shearography, thermography, acoustic emission testing, radiographic and tomographic inspections, and ultrasonic inspections. The general operating principles of these methods as well as their main advantages, limitations and application areas are described below.

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“…In [12] it was reported that similar damage progression scenario occurs under quasi-static loading. Different orientation of plies in a laminate, varying thickness, or internal defects may modify the damage evolution [3,13].…”

Section: Mechanisms Of Damage Propagation In Composite Structuresmentioning

confidence: 99%

Evaluation of Impact Damage in Composite Structures Using Ultrasonic Testing

Wronkowicz-Katunin

Dragan

2018

Fatigue of Aircraft Structures

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Barely visible impact damage is one of the problems commonly occurring in composite elements during an aircraft operation. The authors described the mechanisms of impact damage formation and propagation in composite structures. The paper presents a performed analysis of an influence of impact parameters on the resulting damage, i.e. its detectability by means of visual observation as well as its extent determined based on ultrasonic tests results. The tests were conducted on the CFRP specimens with a wide range of impact damage cases obtained with combinations of variable impact energy and shapes of impactors. Additionally, an algorithm based on image processing and image analysis methods is proposed for the purpose of the effective evaluation of the ultrasonic data obtained.

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Non-destructive evaluation (NDE) of composites: acoustic emission (AE)

Cited by 25 publications

References 3 publications

Lead-Free AE Sensor Based on BZT–BCT Ceramics

Lead-Free AE Sensor Based on BZT–BCT Ceramics

A Brief Review on NDT&E Methods For Structural Aircraft Components

Evaluation of Impact Damage in Composite Structures Using Ultrasonic Testing

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