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http://dx.doi.org/10.7779/JKSNT.2014.34.2.141

Degradation Assessment of Thermoplastic Synthetic Resin Using Propagation Characteristics of Ultrasound  

Jeon, Woo-Sang (Department of physics, Andong National University)
Kim, Gi-Jin (Department of physics, Andong National University)
Kwon, Sung-Duk (Department of physics, Andong National University)
Publication Information
Journal of the Korean Society for Nondestructive Testing / v.34, no.2, 2014 , pp. 141-147 More about this Journal
Abstract
A nondestructive ultrasonic technique was applied to evaluate the thermal characteristics and degradation of synthetic polymer resin (plastics) with better cost-effectiveness and functionality than glass and metal. Thermoplastic and transparent acrylic resin (PMMA) specimens were annealed at below the glass transition temperature ($T_g$), and the propagation characteristics (attenuation and velocity) were measured. The attenuation increased and the velocity decreased with thermal degradation. The results showed that the thermal aging of the specimens could be evaluated quantitatively and that the Tg could be evaluated qualitatively.
Keywords
Plastics; PMMA; Thermal Degradation; Ultrasonic Attenuation; Ultrasonic Velocity;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
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