The principle of the novel ultrasonic spectroscopy utilizing a wide-band polymeric transducer and the FFT (fast Fourier transformation) analysis of a single pulse is introduced and its application to various polymeric materials is reviewed. Ultrasonic analysis of mechanical relaxation processes and phase transitions in solid polymers as well as practical non-destructive inspection of defects in composite materials are described.
All Science Journal Classification (ASJC) codes
- Chemical Engineering(all)
- Organic Chemistry
- Polymers and Plastics