Fatigue and damage analysis on aeronautical CFRP elements under tension and bending loads: Two cases of study
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Abstract
Abstract The present work is focused on experimental monitoring procedures to investigate stresses and damage settlement during fatigue tests of CFRP elements under bending and tensile loads. Continuous damage accumulation, coupled with mechanical properties degradation are monitored with ultrasonic inspection and with thermographic full field analysis, during long lasting HC fatigue loads. Effects of localized bending loads and artificial composite wrinkle presence within a notch are source of delamination initiation, investigated two different types of specimens under fatigue. Combined monitoring approaches, based on thermo-elastic and dissipative phenomena, together with ultrasonic through thickness properties variations are claimed to offer precise damage state and localization during tests, subsequently aided by FEM damage model analysis in case of static failure zone identification, to be compared with experimental data; in addition, experimental DIC computation of deformation on specimen critical zones is performed in order to check failure and delamination initiation spot. The thermal parameters and experimental compliance correlation seem to indicate a similar signal variation during damage progress, verified also by contemporaneous ultrasonic inspections of some specimens in the failure zones of CFRP elements.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Mechanical Behavior of Composites · Ultrasonics and Acoustic Wave Propagation · Structural Health Monitoring Techniques
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (34)
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1. Jones Robert M. Mechanics of Composite Materials. 2nd ed. Taylor & Francis; ISBN 9781560327127; 1999.
2. A critical-element model of the residual strength and life of fatigue-loaded composite coupons
3. Vassilopoulos AP, Keller T. Experimental Characterization of Fiber-Reinforced Composite Materials. In: Vassilopoulos AP, Keller T., editors. Fatigue of Fiber-reinforced Composites, Springer; 2011, p. 25-67.10.1007/978-1-84996-181-3_2 ↗
4. Influence of stochastic variations in manufacturing defects on the mechanical performance of textile composites10.1016/j.compstruct.2018.04.003 ↗
5. Fracture mechanics concepts, stress fields, strain energy release rates, delamination initiation and growth criteria
6. The role of delamination in failure of fibre-reinforced composites10.1098/rsta.2011.0441 ↗
7. Fatigue delamination, initiation and growth, under mode I and II of fracture in a carbon-fiber epoxy composite10.1002/pc.20855 ↗
8. Progressive fatigue damage simulation method for composites10.1016/j.ijfatigue.2012.11.005 ↗
9. Talreja R. Fatigue of Composite Materials. Altenbach H., Becker W. (eds) Modern Trends in Composite Laminates Mechanics, Vienna, Springer, 2003, p. 281-294.10.1007/978-3-7091-2544-1_6 ↗
10. The effect of fiber waviness on the fatigue life of CFRP materials10.1016/j.ijfatigue.2016.04.029 ↗
11. Fatigue failure of sandwich beams with face sheet wrinkle defects10.1016/j.compscitech.2012.06.001 ↗
12. Partial Discharge Monitoring in Power Transformers Using Low-Cost Piezoelectric Sensors10.3390/s16081266 ↗
13. Fatigue damage evolution in thick composite laminates: Combination of X-ray tomography, acoustic emission and digital image correlation10.1016/j.compscitech.2019.107815 ↗
14. In-situ fatigue life prognosis for composite laminates based on stiffness degradation10.1016/j.compstruct.2015.05.006 ↗
15. Analysis of thermoplastic prepreg bending stiffness during manufacturing and of its influence on wrinkling simulations10.1016/j.compositesa.2014.08.020 ↗
16. Thermographic detection of fatigue damage of pressure vessel steels at 1,000 Hz and 20 Hz10.1016/S1359-6462(99)00358-9 ↗
17. A multi-analysis thermography-based approach for fatigue and damage investigations of ASTM A182 F6NM steel at two stress ratios10.1111/ffe.12903 ↗
18. Fatigue limit evaluation of metals using an infrared thermographic technique10.1016/S0167-6636(97)00047-1 ↗
19. A new rapid thermographic method to assess the fatigue limit in GFRP composites10.1016/j.compositesb.2016.08.007 ↗
20. Krapez J K, Pacou D, Gardette G. Lock-In Thermography and Fatigue Limit of Metals, Quantitative Infrared Thermography In Proceedings of the Quantitative Infrared Thermography (QIRT 2000), Reims, France, 18 - 21 July 2000, pp. 277-282. http://dx.doi.org/10.21611/qirt.2000.051.10.21611/qirt.2000.051 ↗
21. Medgenberg J On the Use of Infrared Thermography for the Analysis of Fatigue Damage Processes in Welded Joints10.1016/j.ijfatigue.2008.04.005 ↗
22. Fatigue behaviour of a GFRP laminate by thermographic measurements10.1016/j.proeng.2011.04.579 ↗
23. Fatigue damage on CFRP plates under bending by thermographic and UT analysis, aided with FEM-DIC prediction
24. Mechanical behavior of composite material in presence of wrinkles10.1016/j.prostr.2017.12.044 ↗
25. Fatigue behavior of composites10.1016/S0011-2275(97)00113-6 ↗
26. Ncorr: Open-Source 2D Digital Image Correlation Matlab Software10.1007/s11340-015-0009-1 ↗
27. Digital image correlation (DIC) technique in measuring strain using opensource platform Ncorr
28. Digital image correlation (DIC) for measuring strain in brick masonry specimen using Ncorr open source 2D MATLAB program
29. Evaluation of polypropylene based composites from thermal effects developing under cyclic bending tests10.1016/j.compstruct.2017.09.066 ↗
30. Study of damage evolution in composite materials base on the Thermoelastic Phase Analysis (TPA) method10.1016/j.compositesb.2017.02.040 ↗
31. Predictions of the original and truncated maximum-strain failure models for certain fibrous composite laminates10.1016/S0266-3538(97)00192-9 ↗
32. Failure criteria for Unidirectional fibre composites10.1115/1.3153664 ↗
33. Martina F, Correlazione numerico-sperimentale del danno in laminati CFRP sollecitati a flessione, 2019, Master Thesis, University of Salento, Lecce.
34. SOLID186 Element Description, 3-D 20-Node Structural Solid, © ANSYS - Inc. https://www.mm.bme.hu/~gyebro/files/ans_help_v182/ans_elem/Hlp_E_SOLID186.html.