Following of the relaxations in a polymer's behavior part II: Characterization by quasistatic and dynamic forced bending

✍ Scribed by G. M. Guerrin; J. M. Genevaux

• Publisher: John Wiley and Sons
• Year: 1992
• Tongue: English
• Weight: 519 KB
• Volume: 45
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/app.1992.070450813

✦ Synopsis

The aim of this work is to quantify the internal loss in polymers, for frequencies near 1 Hz, and including the domain (100 and 3000 Hz). The quasistatic experiment used the double-pendulum method; the other experiments were forced vibrations in bending. Two materials were tested between 20 and 60°C, PMMA and wood. Owing to the anisotropy of the wood, the different mechanisms that induce internal loss are located in the matrix or in the reinforcement (fiber) of this composite. The results were plotted on the correlation diagrams, presented in the first part of this study.