Assessing deformability of siltstone under compressive loading by ultrasonic wave propagation
Küçük Resim Yok
Tarih
2011
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Determination of stress-strain behaviour of rocks plays a crucial role in understanding the response of rocks during loading. However, it is a tedious, expensive and a time-consuming process to obtain such characteristics both in the laboratory and in situ. On the other hand, non-destructive testing methods such as ultrasonic velocities can produce a reliable and fast solution to indentify state of strain and stress in rocks. The present paper aims to provide insight into the relations amongst ultrasonic wave velocities, amplitudes and deformability properties of porous siltstone under compressive loading. For this purpose, pulse (v P) and shear wave velocities (v S) along with amplitudes (AP - AS), and applied loads with resultant strain were measured simultaneously so that response of siltstone to compression can be evaluated. In addition, initial v P and v S were recorded at the beginning of each test to calculate dynamic elastic properties of the specimens. This provided a comparison between static and dynamic elasticity properties of siltstone. Crack damage associated with the onset of dilation was also investigated. The results showed that there is a non-linear logarithmic relation between velocities and stress-strain level for siltstones.
Açıklama
MAPTEK
35th International Symposium of Application of Computers and Operations Research in the Minerals Industry, APCOM -- 24 September 2011 through 30 September 2011 -- Wollongong, NSW -- 92618
35th International Symposium of Application of Computers and Operations Research in the Minerals Industry, APCOM -- 24 September 2011 through 30 September 2011 -- Wollongong, NSW -- 92618
Anahtar Kelimeler
Applied loads, Compressive loading, Crack damage, Deformability properties, Dynamic elastic property, Fast solutions, In-situ, Nondestructive testing method, Shear wave velocity, Siltstones, Static and dynamic, Stress strain behaviours, Stress-strain, Ultrasonic wave velocity, Computer applications, Deformation, Elasticity, Operations research, Stress-strain curves
Kaynak
35th APCOM Symposium - Application of Computers and Operations Research in the Minerals Industry, Proceedings
WoS Q Değeri
Scopus Q Değeri
N/A
