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Fusion characteristics of volcanic ash relevant to aviation hazards

Song, Wenjia; Hess, Kai-Uwe; Damby, David E.; Wadsworth, Fabian B.; Lavallée, Yan; Cimarelli, Corrado; Dingwell, Donald B.

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Authors

Wenjia Song

Kai-Uwe Hess

David E. Damby

Yan Lavallée

Corrado Cimarelli

Donald B. Dingwell



Abstract

The fusion dynamics of volcanic ash strongly impacts deposition in hot parts of jet engines. In this study, we investigate the sintering behavior of volcanic ash using natural ash of intermediate composition, erupted in 2012 at Santiaguito Volcano, Guatemala. A material science procedure was followed in which we monitored the geometrical evolution of cylindrical‐shaped volcanic ash compact upon heating from 50 to 1400°C in a heating microscope. Combined morphological, mineralogical, and rheological analyses helped define the evolution of volcanic ash during fusion and sintering and constrain their sticking potential as well as their ability to flow at characteristic temperatures. For the ash investigated, 1240°C marks the onset of adhesion and flowability. The much higher fusibility of ash compared to that of typical test sands demonstrates for the need of a more extensive fusion characterization of volcanic ash in order to mitigate the risk posed on jet engine operation.

Citation

Song, W., Hess, K., Damby, D. E., Wadsworth, F. B., Lavallée, Y., Cimarelli, C., & Dingwell, D. B. (2014). Fusion characteristics of volcanic ash relevant to aviation hazards. Geophysical Research Letters, 41(7), 2326-2333. https://doi.org/10.1002/2013gl059182

Journal Article Type Article
Acceptance Date Mar 7, 2014
Online Publication Date Apr 7, 2014
Publication Date Apr 16, 2014
Deposit Date Mar 20, 2018
Publicly Available Date Mar 28, 2024
Journal Geophysical Research Letters
Print ISSN 0094-8276
Electronic ISSN 1944-8007
Publisher Wiley
Peer Reviewed Peer Reviewed
Volume 41
Issue 7
Pages 2326-2333
DOI https://doi.org/10.1002/2013gl059182

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Copyright Statement
Song, Wenjia, Hess, Kai-Uwe, Damby, David E., Wadsworth, Fabian B., Lavallée, Yan, Cimarelli, Corrado & Dingwell, Donald B. (2014). Fusion characteristics of volcanic ash relevant to aviation hazards. Geophysical Research Letters 41(7): 2326-2333, 10.1002/2013GL059182 (DOI). To view the published open abstract, go to https://doi.org/ and enter the DOI.





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