Saha, I and Vidya Sagar, R (2022) Effect of Steel Fibre Content on the Information Entropy of Acoustic Emission Waveforms Generated During Mode I Fracture Process in Cementitious Composites. In: Virtual Seminar on Applied Mechanics, VSAM 2021, 28-29 May 2021, Virtual, Online, Chennai, pp. 135-150.
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This article reports the variation of ‘information entropy’ of Acoustic Emission (AE) waveforms in steel fibre reinforced concrete (SFRC) as the volume fraction of the steel fibre (Vf) is increased from 0.0 to 1.6%. Information entropy is the measure of uncertainty in the probability distribution of a random variable. The random variable is the amplitude (volts) of the AE waveforms. Three-point bend tests were performed on notched SFRC beam specimens to record the generated AE waveforms by following EN-14651 recommendations. As the damage in the SFRC specimens developed under the loading, it was observed that the logarithm of the cumulative AE information entropy becomes almost constant. The AE information entropy may be useful to identify the damage in SFRC by observing the change in slope of the logarithm of cumulative AE information entropy curve during structural health monitoring. The reason is due to the existence of a relation between AE based damage index (D) and AE information entropy.
| Item Type: | Conference Paper |
|---|---|
| Publication: | Lecture Notes in Mechanical Engineering |
| Publisher: | Springer Science and Business Media Deutschland GmbH |
| Additional Information: | The copyright for this article belongs to Springer Science and Business Media Deutschland GmbH |
| Department/Centre: | Division of Mechanical Sciences > Civil Engineering |
| Date Deposited: | 23 May 2022 06:34 |
| Last Modified: | 23 May 2022 06:34 |
| URI: | https://eprints.iisc.ac.in/id/eprint/72051 |
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