Characterization of Polyvinylchloride by Means of Sound Velocity and Longitudinal Modulus Measurements

Autor:	Hiroyasu Nomura, Shinobu Koda, Kiyoo Yamashita, Katsuyuki Matsumoto
Rok vydání:	1993
Předmět:	Bulk modulus Materials science General Engineering General Physics and Astronomy Modulus Mineralogy Poisson's ratio Shear modulus Shear (sheet metal) symbols.namesake Computer Science::Sound otorhinolaryngologic diseases symbols Particle velocity Shear velocity Composite material Elastic modulus
Zdroj:	Japanese Journal of Applied Physics. 32:2234
ISSN:	1347-4065 0021-4922
DOI:	10.1143/jjap.32.2234
Popis:	The longitudinal and transverse sound velocities for polyvinylchloride and polycarbonate with different molecular weights were measured at 30°C. The temperature dependence of the longitudinal sound velocity was measured up to 110°C. The longitudinal sound velocity decreased with increasing molecular weight, while the transverse sound velocity was nearly independent of the molecular weight. The longitudinal, shear and bulk moduli were obtained from the sound velocity and density data. Longitudinal and bulk moduli depended on the molecular weight strongly, but the shear modulus, Young's modulus and Poisson's ratio were insensitive to the molecular weight. The longitudinal sound velocity decreased with increasing temperature and the temperature dependence of the velocity changed drastically around the glass transition temperature.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b3b651206148059bc2389249394484b3 https://doi.org/10.1143/jjap.32.2234 Zobrazit plný text záznamu