Next Article in Journal
Web3DGIS-Based System for Reservoir Landslide Monitoring and Early Warning
Next Article in Special Issue
Wavelet Packet Decomposition to Characterize Injection Molding Tool Damage
Previous Article in Journal
Implementation of FPGA-Based Charge Control for a Self-Sufficient Solar Tracking Power Supply System
Previous Article in Special Issue
Proof of Concept of Crack Localization Using Negative Pressure Waves in Closed Tubes for Later Application in Effective SHM System for Additive Manufactured Components
Article Menu

Export Article

Open AccessArticle
Appl. Sci. 2016, 6(2), 43; doi:10.3390/app6020043

Identification of a Critical Time with Acoustic Emission Monitoring during Static Fatigue Tests on Ceramic Matrix Composites: Towards Lifetime Prediction

INSA de Lyon, MATEIS (UMR CNRS 5510), 7 avenue Jean Capelle, 69621 Villeurbanne Cedex, France
This paper is an extended version of paper presented in the 6th International Conference on Emerging Technologies in Non-destructive Testing (ETNDT6), Brussels, Belgium, 27–29 May 2015.
*
Author to whom correspondence should be addressed.
Academic Editor: Dimitrios G. Aggelis
Received: 15 December 2015 / Revised: 19 January 2016 / Accepted: 21 January 2016 / Published: 3 February 2016
(This article belongs to the Special Issue Acoustic and Elastic Waves: Recent Trends in Science and Engineering)
View Full-Text   |   Download PDF [4404 KB, uploaded 3 February 2016]   |  

Abstract

Non-oxide fiber-reinforced ceramic-matrix composites are promising candidates for some aeronautic applications that require good thermomechanical behavior over long periods of time. This study focuses on the behavior of a SiCf/[Si-B-C] composite with a self-healing matrix at intermediate temperature under air. Static fatigue experiments were performed below 600 °C and a lifetime diagram is presented. Damage is monitored both by strain measurement and acoustic emission during the static fatigue experiments. Two methods of real-time analysis of associated energy release have been developed. They allow for the identification of a characteristic time that was found to be close to 55% of the measured rupture time. This critical time reflects a critical local energy release assessed by the applicability of the Benioff law. This critical aspect is linked to a damage phase where slow crack growth in fibers is prevailing leading to ultimate fracture of the composite. View Full-Text
Keywords: ceramic matrix composite; static fatigue; lifetime assessment estimation; mechanical behavior; acoustic emission; damage identification ceramic matrix composite; static fatigue; lifetime assessment estimation; mechanical behavior; acoustic emission; damage identification
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Godin, N.; Reynaud, P.; R’Mili, M.; Fantozzi, G. Identification of a Critical Time with Acoustic Emission Monitoring during Static Fatigue Tests on Ceramic Matrix Composites: Towards Lifetime Prediction. Appl. Sci. 2016, 6, 43.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Appl. Sci. EISSN 2076-3417 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top