ACOUSTIC EMISSIONS IN FRACTURING SEA ICE PLATE SIMULATED BY PARTICLE SYSTEM
ABSTRACT: In-plane dynamic fracture jumps and acoustic emissions in sea ice floes of different sizes are simulated by the particle system. Fracture patterns and time sequences similar to those observed in experiments are achieved. For the given spatial location of hydrophone, the acoustic signals fr...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.694.6366 2023-05-15T18:17:15+02:00 ACOUSTIC EMISSIONS IN FRACTURING SEA ICE PLATE SIMULATED BY PARTICLE SYSTEM Zhengzhi Lit Zdenek P. Bazant Fellow The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.694.6366 http://www.civil.northwestern.edu/people/bazant/PDFs/Papers/372.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.694.6366 http://www.civil.northwestern.edu/people/bazant/PDFs/Papers/372.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.civil.northwestern.edu/people/bazant/PDFs/Papers/372.pdf text ftciteseerx 2016-01-08T18:34:34Z ABSTRACT: In-plane dynamic fracture jumps and acoustic emissions in sea ice floes of different sizes are simulated by the particle system. Fracture patterns and time sequences similar to those observed in experiments are achieved. For the given spatial location of hydrophone, the acoustic signals from crack jumps in ice are calculated in the frequency domain by a modified Farmer and Xie's acoustic model for ice plate floating in shallow sea. The acoustic pressure-time histories are synthesized by the Fourier inverse transform. The calculated acoustic signals resemble the recorded signals. Their overall character is found to depend on the plate size. This is a size effect that is manifested in the calculated root-mean-square history of the acoustic pressure at hydro-phone. Differences among the acoustic records for different fracture lengths are found. They offer the possibility of making inferences on the fracture characteristics of sea ice from the acoustic records. Text Sea ice Unknown |
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ftciteseerx |
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English |
description |
ABSTRACT: In-plane dynamic fracture jumps and acoustic emissions in sea ice floes of different sizes are simulated by the particle system. Fracture patterns and time sequences similar to those observed in experiments are achieved. For the given spatial location of hydrophone, the acoustic signals from crack jumps in ice are calculated in the frequency domain by a modified Farmer and Xie's acoustic model for ice plate floating in shallow sea. The acoustic pressure-time histories are synthesized by the Fourier inverse transform. The calculated acoustic signals resemble the recorded signals. Their overall character is found to depend on the plate size. This is a size effect that is manifested in the calculated root-mean-square history of the acoustic pressure at hydro-phone. Differences among the acoustic records for different fracture lengths are found. They offer the possibility of making inferences on the fracture characteristics of sea ice from the acoustic records. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Zhengzhi Lit Zdenek P. Bazant Fellow |
spellingShingle |
Zhengzhi Lit Zdenek P. Bazant Fellow ACOUSTIC EMISSIONS IN FRACTURING SEA ICE PLATE SIMULATED BY PARTICLE SYSTEM |
author_facet |
Zhengzhi Lit Zdenek P. Bazant Fellow |
author_sort |
Zhengzhi Lit |
title |
ACOUSTIC EMISSIONS IN FRACTURING SEA ICE PLATE SIMULATED BY PARTICLE SYSTEM |
title_short |
ACOUSTIC EMISSIONS IN FRACTURING SEA ICE PLATE SIMULATED BY PARTICLE SYSTEM |
title_full |
ACOUSTIC EMISSIONS IN FRACTURING SEA ICE PLATE SIMULATED BY PARTICLE SYSTEM |
title_fullStr |
ACOUSTIC EMISSIONS IN FRACTURING SEA ICE PLATE SIMULATED BY PARTICLE SYSTEM |
title_full_unstemmed |
ACOUSTIC EMISSIONS IN FRACTURING SEA ICE PLATE SIMULATED BY PARTICLE SYSTEM |
title_sort |
acoustic emissions in fracturing sea ice plate simulated by particle system |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.694.6366 http://www.civil.northwestern.edu/people/bazant/PDFs/Papers/372.pdf |
genre |
Sea ice |
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Sea ice |
op_source |
http://www.civil.northwestern.edu/people/bazant/PDFs/Papers/372.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.694.6366 http://www.civil.northwestern.edu/people/bazant/PDFs/Papers/372.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766191357724983296 |