Numerical analysis of Lamb waves propagating through impact damage in a skin-stringer structure composed of interlaminar-toughened CFRP

2021 ◽  
pp. 114639
Author(s):  
Osamu Saito ◽  
Mengyi Liu ◽  
Yoji Okabe ◽  
Hideki Soejima
Keyword(s):  
Numerical Analysis ◽  
Lamb Waves ◽  
Impact Damage

scholarly journals Impact Damage Detection of FRP Laminates Based on Spectrum Analysis of Lamb Waves

2012 ◽  
Vol 78 (790) ◽  
pp. 879-889
Author(s):  
Akihiro WADA ◽  
Shinya MOTOGI ◽  
Tomohiro YAMASAKI
Keyword(s):  
Damage Detection ◽  
Spectrum Analysis ◽  
Lamb Waves ◽  
Impact Damage

scholarly journals Transmission of Lamb waves across a partially closed crack: Numerical analysis and experiment

Ultrasonics ◽  
2019 ◽  
Vol 92 ◽  
pp. 57-67 ◽  
Author(s):  
Mutsuki Matsushita ◽  
Naoki Mori ◽  
Shiro Biwa
Keyword(s):  
Numerical Analysis ◽  
Lamb Waves ◽  
Closed Crack

scholarly journals Experimental Study of Lamb Waves Propagation inside an Impact Damage in the Size of the Used Wavelength

2020 ◽  
Vol 56 (2) ◽  
pp. 141-150
Author(s):  
S. Taleb ◽  
L. Rittmeier ◽  
M. Sinapius ◽  
F. Boubenider ◽  
D. Schmidt
Keyword(s):  
Experimental Study ◽  
Lamb Waves ◽  
Impact Damage ◽  
Waves Propagation

Detection of Low-velocity Impact Damage in Composite Plates using Lamb Waves

2004 ◽  
Vol 3 (1) ◽  
pp. 33-41 ◽  
Author(s):  
K. Diamanti ◽  
J. M. Hodgkinson ◽  
C. Soutis
Keyword(s):  
Lamb Waves ◽  
Impact Damage ◽  
Composite Plates ◽  
Low Velocity Impact ◽  
Low Velocity ◽  
Velocity Impact

scholarly journals Influence and Compensation of Temperature Effects for Damage Detection and Localization in Aerospace Composites

Sensors ◽  
2020 ◽  
Vol 20 (15) ◽  
pp. 4153
Author(s):  
Guillermo Azuara ◽  
Eduardo Barrera
Keyword(s):  
Guided Waves ◽  
Lamb Waves ◽  
Impact Damage ◽  
Reconstruction Algorithm ◽  
Fiber Reinforced Polymers ◽  
Carbon Fiber Reinforced Polymers ◽  
Reinforced Polymers ◽  
Operational Conditions ◽  
Detection And Localization ◽  
Non Destructive

Structural Health Monitoring (SHM) of Carbon Fiber Reinforced Polymers (CFRP) has become, recently, in a promising methodology for the field of Non-Destructive Inspection (NDI), specially based on Ultrasonic Guided Waves (UGW), particularly Lamb waves using Piezoelectric Transducers (PZT). However, the Environmental and Operational Conditions (EOC) perform an important role on the physical characteristics of the waves, mainly the temperature. Some of these effects are phase shifting, amplitude changes and time of flight (ToF) variations. In this paper, a compensation method for evaluating and compensating the effects of the temperature is carried out, performing a data-driven methodology to calculate the features from a dataset of typical temperature values obtained from a thermoset matrix pristine plate, with a transducer network attached. In addition, the methodology is tested on the same sample after an impact damage is carried out on it, using RAPID (Reconstruction Algorithm for Probabilistic Inspection of Damage) and its geometrical variant (RAPID-G) to calculate the location of the damage.

Диагностика ударных повреждений монолитных и сотовых углепластиков с помощью ультразвуковых волн Лэмба

2021 ◽  
pp. 33-43
Author(s):  
М.В. Бурков ◽  
А.В. Еремин ◽  
А.В. Бяков ◽  
П.С. Любутин ◽  
С.В. Панин
Keyword(s):  
Damage Detection ◽  
Impact Energy ◽  
Cross Correlation ◽  
Lamb Waves ◽  
Impact Damage ◽  
Damage Index ◽  
The Other ◽  
State Testing ◽  
Accurate Data ◽  
Damage Location

The paper presents the results on Lamb waves based technique for impact damage detection and severity identification. The PZT network operates in the round-robin mode changing the actuator and sensor roles of the transducers in order to detect the response of the system in the presence of damage. The monitoring is performed via the analysis of three parameters: change of the amplitude (dA), change of the energy (dP) and cross-correlation (NCC) of the signals in baseline and damaged state. Testing of laminate CFRPs shows that the damage location is estimated within the 5–15 mm error, while the computed Damage index linearly is dependent on the applied impact energy. For honeycomb CFRPs the NCC parameter do not provide accurate results, however, the other parameters allow identification within the 5–20 mm error and reflect accurate data on the severity of the damage.

scholarly journals Composite Aerospace Structure Monitoring with use of Integrated Sensors

2015 ◽  
Vol 2015 (7) ◽  
pp. 12-17
Author(s):  
Krzysztof Dragan ◽  
Michał Dziendzikowski ◽  
Artur Kurnyta ◽  
Michal Salacinski ◽  
Sylwester Klysz ◽  
...  
Keyword(s):  
Lamb Waves ◽  
Impact Damage ◽  
Aerospace Industry ◽  
Piezoelectric Transducers ◽  
Damage Growth ◽  
Aerospace Structure ◽  
Structure Monitoring ◽  
Mathematical Algorithms ◽  
Main Component ◽  
The Impact

Abstract One major challenge confronting the aerospace industry today is to develop a reliable and universal Structural Health Monitoring (SHM) system allowing for direct aircraft inspections and maintenance costs reduction. SHM based on guided Lamb waves is an approach capable of addressing this issue and satisfying all the associated requirements. This paper presents an approach to monitoring damage growth in composite aerospace structures and early damage detection. The main component of the system is a piezoelectric transducers (PZT) network integrated with composites. This work describes sensors’ integration with the structure. In particular, some issues concerning the mathematical algorithms giving information about damage from the impact damage presence and its growth are discussed.

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