Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Hamed O. Ghaffari"'
Publikováno v:
Solid Earth, Vol 13, Pp 137-160 (2022)
Geological carbon sequestration provides permanent CO2 storage to mitigate the current high concentration of CO2 in the atmosphere. CO2 mineralization in basalts has been proven to be one of the most secure storage options. For successful implementat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8dfcdf792b48593c2049bfd79f3de222
https://doi.org/10.5194/se-13-137-2022
https://doi.org/10.5194/se-13-137-2022
Publikováno v:
The Journal of the Acoustical Society of America. 150:2503-2513
We present a method for calibrating piezoelectric sensors using a laser Doppler vibrometer. Our method uses an average of Fourier transform terms of the recorded signal from the piezoelectric sensor, which is compared with the laser probe measurement
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9800c4bd40872ec2445612a45a8a791f
https://doi.org/10.1121/10.0006445
https://doi.org/10.1121/10.0006445
Geological carbon sequestration provides permanent CO2 storage to mitigate the current high concentration of CO2 in the atmosphere. CO2 mineralization in basalts has been proven to be one of the most secure storage options. For successful implementat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e3649dfc0aacbea23336dd9105bd93c7
https://doi.org/10.5194/se-2021-114
https://doi.org/10.5194/se-2021-114
Publikováno v:
Rock Mechanics and Rock Engineering. 52:2523-2534
Cohesion and internal friction angle are the two material parameters used in the Coulomb model to predict rock failure in many rock engineering applications. Although these two parameters have been extensively quantified under static conditions using
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0e9487aefd5aa8bfbfbcf1481d92604a
https://doi.org/10.1007/s00603-019-1744-x
https://doi.org/10.1007/s00603-019-1744-x
Publikováno v:
Geophysical Journal International. 217:1034-1046
SUMMARYThe formation of fragments due to avalanche-like growth of damage under impulsive forces is a process central to numerous studies ranging from shaped charge jet break up and rock blasting to bolide impacts, and, more recently, earthquake ruptu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7dfb0ad89cb19c601cf933ad9d0c5fc4
https://doi.org/10.1093/gji/ggz064
https://doi.org/10.1093/gji/ggz064
Publikováno v:
Journal of Geophysical Research: Solid Earth. 123:7055-7073
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a69548c2bfc23bd424491b526ad7a0d7
https://doi.org/10.1029/2018jb015786
https://doi.org/10.1029/2018jb015786
Autor:
Matej Pec, Hamed O. Ghaffari
Publikováno v:
Prof. Pec
Inelastic deformation of minerals and rocks is associated with activation of various defects such as fractures, twins, and dislocations. Active and passive ultrasound probes are potential tools to examine the nature of these defects under a broad ran
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::260602d6f659d6d536a2fbd896913fc2
https://doi.org/10.1063/5.0004035
https://doi.org/10.1063/5.0004035
Publikováno v:
Scientific Reports, Vol 9, Iss 1, Pp 1-9 (2019)
Scientific Reports
Scientific Reports
Onset of permanent deformation in crystalline materials under a sharp indenter tip is accompanied by nucleation and propagation of defects. By measuring the spatio-temporal strain field near the indenter tip during indentation tests, we demonstrate t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::358f375e01090bd2f071ab854dd1374a
Publikováno v:
Ghaffari, H O, Griffith, W A & Benson, P M 2017, ' Microscopic evolution of laboratory volcanic hybrid earthquakes ', Scientific Reports, vol. 7, 40560 . https://doi.org/10.1038/srep40560
Scientific Reports
Scientific Reports
Characterizing the interaction between fluids and microscopic defects is one of the long-standing challenges in understanding a broad range of cracking processes, in part because they are so difficult to study experimentally. We address this issue by
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e54899be91f2fdf6f34363a0bbea22e5
https://doi.org/10.1038/srep40560
https://doi.org/10.1038/srep40560
Publikováno v:
Nonlinear Processes in Geophysics, Vol 21, Iss 4, Pp 763-775 (2014)
Understanding the physics of acoustic excitations emitted during the cracking of materials is one of the long-standing challenges for material scientists and geophysicists. In this study, we report novel results of applications of functional complex
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::77f8d99fe02e35c233b3f786602a8cbe
http://www.nonlin-processes-geophys.net/21/763/2014/npg-21-763-2014.pdf
http://www.nonlin-processes-geophys.net/21/763/2014/npg-21-763-2014.pdf