Analysis of Acoustic Emission energy release during static fatigue tests at intermediate temperatures on Ceramic Matrix Composites: Towards rupture time prediction
Source abstract
Abstract
Abstract Ceramic Matrix Composites (CMCs) such as woven SiCf/[Si–B–C] are used in aeronautical engines. Expected lifetimes in service conditions are tens of thousands of hours and therefore unattainable in laboratory tests. This paper shows the potential of Acoustic Emission (AE) based approach to lifetime prediction of CMCs. The energy of AE events is used as a measure of stress-induced damage during static fatigue at intermediate temperatures. The energy released by sources was determined from the signal energy received by two sensors, the effects of attenuation due to propagation distance were eliminated. A method for real-time analysis of energy release has been developed. It allows the identification of a characteristic time at 55% of the measured rupture time. This characteristic time reflects a local critical behavior described by the Benioff law and it indicates a second damage phase when subcritical crack growth in fibers is predominant.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Rock Mechanics and Modeling · Ultrasonics and Acoustic Wave Propagation · Geophysical Methods and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (24)
Show source-provided references
1. A micromechanics-based approach to the mechanical behavior of brittle matrix composites10.1016/S0266-3538(01)00120-8 ↗
2. CVI SiC/SiC composites
3. Prediction of lifetime in static fatigue at high temperatures for ceramic matrix composites10.4028/www.scientific.net/AMR.112.129 ↗
4. Delayed failure at intermediate temperatures (600–700°C) in air in silicon carbide multifilament tows10.1111/j.1551-2916.2004.00888.x ↗
5. Delayed failure of Hi-Nicalon and Hi-Nicalon S multifilament tows and single filaments at intermediate temperatures10.1111/j.1551-2916.2009.02924.x ↗
6. Analysis of damage mechanisms and associated acoustic emission in two SiC/[Si–B–C] composites exhibiting different tensile curves. Part I: damage patterns and acoustic emission activity10.1016/j.compscitech.2007.12.001 ↗
7. Analysis of damage mechanisms and associated acoustic emission in two SiC/[Si–B–C] composites exhibiting different tensile curves. Part II: unsupervised acoustic emission data clustering10.1016/j.compscitech.2007.12.002 ↗
8. Gutenberg · 1954
9. Study of the elastic shocks caused by the fracture of heterogeneous materials and its relations to earthquake phenomena
10. Indicators of critical point behavior prior to rock failure inferred from pre-failure damage10.1016/j.tecto.2006.04.023 ↗
11. Experimental studies of the change of spatial correlation length of acoustic emission events during rock fracture process10.1016/j.ijrmms.2010.08.002 ↗
12. Predictive modeling of the seismic cycle of the Greater San Francisco Bay Region10.1029/93JB00357 ↗
13. An observational test of the critical earthquake concept10.1029/98JB00792 ↗
14. Asymptotic distributions for the failure of fibrous materials under series-parallel structure and equal load-sharing10.1115/1.3157595 ↗
15. Time dependent fiber-bundles with local load sharing10.1103/PhysRevE.63.021507 ↗
16. Can damage mechanics explain temporal scaling laws in brittle fracture and seismicity?10.1007/s00024-006-0058-6 ↗
17. Accelerated seismic release and related aspects of seismicity patterns on earthquakes faults10.1007/s00024-002-8740-9 ↗
18. Critical ruptures10.1007/s100510070089 ↗
19. An experimental test of the critical behaviour of fracture precursors10.1007/s100510050521 ↗
20. Andrade and critical time-to-failure laws in fiber–matrix composites: experiments and model10.1016/j.jmps.2004.12.001 ↗
21. Statistical properties of microcracking in polyurethane foams under tensile test10.1007/s10704-006-0051-1 ↗
22. Experimental study of crackling noise: conditions on power law scaling correlated to fracture precursors10.1088/1742-5468/2009/01/P01018 ↗
23. Acoustic emission and lifetime prediction during static fatigue tests on ceramic matrix composite at high temperature under air10.1016/j.compositesa.2010.03.008 ↗
24. Modal acoustic emission of damage accumulation in a woven SiC/SiC composite10.1016/S0266-3538(98)00121-3 ↗