Details

Autor(en) / Beteiligte

• Rao, M. V. M. S.
• Lakshmi, K. J. Prasanna

Titel

Analysis of b-value and improved b-value of acoustic emissions accompanying rock fracture

Ist Teil von

• Current science (Bangalore), 2005-11, Vol.89 (9), p.1577-1582

Ort / Verlag

Current Science Association

Erscheinungsjahr

2005

Quelle

EZB Free E-Journals

Beschreibungen/Notizen

• Acoustic emissions (AE) produced during the compressive fracture of a brittle rock have been subjected to detailed analysis using an advanced software for the computation of b-value as well as improved b-value. Conventionally, the b-value of AE is calculated using the Gutenberg–Richter relationship, which is widely used in seismology. Determination of improved b-value is a new approach, which is computed from AE amplitude distribution data. It involves filtering of high and low amplitude AE hits (or events) in a selective manner. The results obtained by both these methods to evaluate the fracture process in the rock are compared and discussed.