Title :
Ultrasonic tomographic imaging of an encased highly-attenuating solid media
Author :
Gan, T.H. ; Hutchins, D.A. ; Billson, D.R. ; Wong, F.C.
Author_Institution :
Sch. of Eng., Warwick Univ., Coventry, UK
Abstract :
Ultrasonic tomographic imaging has been performed on a highly-attenuating filled hydroxyl-terminated polybutadiene, cast into a steel case. Extremely low signal levels due to the attenuation and scattering properties of the polymer were present. Complications also arose from high amplitude guided waves within the steel case, which tended to mask directly-transmitted signals through the propellant. These were solved using specially-designed and pulse-compression signal processing. Images will be presented to demonstrate the technique
Keywords :
acoustic signal processing; acoustic tomography; filled polymers; ultrasonic absorption; ultrasonic imaging; ultrasonic materials testing; ultrasonic scattering; US attenuation; US scattering; filled polymer; high-amplitude guided wave; hydroxyl terminated polybutadiene; propellant; pulse compression signal processing; solid medium; steel case; ultrasonic tomographic imaging; Attenuation; Performance evaluation; Propulsion; Rockets; Signal processing; Solids; Steel; Tomography; Ultrasonic imaging; Ultrasonic variables measurement;
Conference_Titel :
Ultrasonics Symposium, 2000 IEEE
Conference_Location :
San Juan
Print_ISBN :
0-7803-6365-5
DOI :
10.1109/ULTSYM.2000.922669
