Determination of dynamic elastic constants of transversely isotropic rocks using a single cylindrical specimen

✍ Scribed by Liao, Jyh Jong ;Hu, Ting-Bin ;Chang, Chunn-Wei

• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 1001 KB
• Volume: 34
• Category: Article
• ISSN: 0148-9062
• DOI: 10.1016/s1365-1609(97)90198-2

✦ Synopsis

A new experimental procedure and its associated interpretation theories are proposed to determine the jive dynamic elastic constants of a transverse& isotropic rock. Using Christofel's equations, the elastic constants can be uniquely determined based on ultrasonic wave velocity measurements on a single cylindrical specimen. The new method requires that the orientation of planes of elastic symmetry be parallel to its longitudinal axis. The wave velocity measuring devices (i.e. transducers) can be mounted on the sides 01 ends of the specimen. The new method has been implemented in the laboratory on a transversely isotropic rock, argillite. Wave velocity measurements were taken on specimens with and without a tensile load applied at the en&. Consistent results were obtained in both cases. This paper describes details af the analytical background and the proposed experimental procedure. Availabie test results are presented to demonstrate the efficacy of the new method.