Young's modulus and secondary mechanical dispersions in polypromellitimide
β Scribed by Enzo Butta; Silvano De Petris; Mario Pasquini
- Publisher
- John Wiley and Sons
- Year
- 1969
- Tongue
- English
- Weight
- 434 KB
- Volume
- 13
- Category
- Article
- ISSN
- 0021-8995
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
## Abstract The sound velocity was measured in bars for a number of lowβ and highβdensity polyethylene samples. The longitudinal oscillations in the bar were generated electrodynamically. It was observed that the sound velocity decreased somewhat with length. Therefore all sound velocity measuremen
The mechanical loss (Q-l) and Young's modulus (E) were measured as a function of temperature in the range 100 K<T<450 K on rectangular plate specimens of BaTi03 driven electrostatically in flexural vibration mode at resonance frequencies between 2-4 kHz. Q-I(T) and E(T) curves show the following thr