Utilization Group, Department of Research and Development, Foundation Chalmers Industrial Technology, Gothenburg, Sweden;
Division of Dynamics, Department of Applied Mechanics, Chalmers University of Technology, Gothenburg, Sweden;
Acoustic; Monitoring; Gas; Liquid; or; Solid; Acoustic; Equation; Visoelastic; Media; Stress; Relaxation; Time; Average; Normal; Stress; the; Stokes-Type; Wave; Equation;