Ivanov, V. Acoustic emission: some problems, tasks and solutions. NDT International, 1984, 17, 323-328.V. I. Ivanov, "Acoustic emission: some problems, tasks and solutions," NDT interna- tional, vol. 17, no. 6, pp. 323-328, 1984....
These weakly-singular equations are denoted as R-phi-BIE, and R-q-BIE, respectively. General Petrov-Galerkin weak-solutions of R-phi-BIE, and R-q-BIE are discussed; and special cases of collocation-based boundary-element numerical approaches [denoted as BEM-R-phi-BIE, and BEM-R-q-BIE]...
Acoustic Communication in Insects and Anurans : Common Problems and Diverse Solutions Book Review: Acoustic Communication in Insects and Anurans: Common Problems and Diverse Solutions. By H. Carl Gerhard and Franz Huber. University of Chicago Press, Chicago, 2002, 531 pp. $100 hardcover, $35 pape...
Figure 1.Background and problems. When we use historical logging and 3D seismic data to search for the sandstone type uranium deposits, the following problems need to be solved: Many oil and gas wells lack acoustic logging data in the target stratum of the uranium reservoir in that they are...
Today, it is possible to detect and solve any exterior and interior acoustics problems upfront in the development cycle, using digital tools that leverage Finite Element Methods (FEM), Ray tracing and more, covering log and high frequencies. Organizations like Audi, Bentley, Nissan, and the US...
this task has relatively straightforward solutions and provides the corresponding Transfer Matrix (TM) entries as a function of the Laplace variable (complex frequency) s=σ+iω, where ω=2πf, (f signifies the linear frequency) while the real part σ indicates the growing/unstable (σ>0) ...
Numerical analysis of acoustic modes using the linear least squares method of fundamental solutions The method of fundamental solutions (MFS) has been proved to be an accurate and efficient meshless numerical method to solve acoustic eigenproblems. Tradit... CC Tsai,DL Young,CL Chiu,... - 《Jour...
One aspect of this research has been to determine fault plane solutions of AE source events from first motion data. These studies show that in addition to pure tensile and double couple events, a significant number of more complex event types occur in the period leading to fault nucleation. 4...
The accuracy of the solver is demonstrated by calculating eigenfrequencies and mode shapes for common acoustic modes across four orders of magnitude in frequency in several simple geometries and comparing the results to analytical solutions where available or to numerical solvers based on more ...
The material describes how to solve numerous problems theoretically, and how to obtain solutions from the theory using MATLAB engineering software, as well as analyzing the same problem using ANSYS Workbench and ANSYS Mechanical APDL. Developed for the Practicing Engineer Provides free downloads, ...