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Creep Characteristic of the Polymethyl Methacrylate(PMMA) at Stresses and Temperatures  

Kang, Suk-Choon (Department of Mechanical Engineering, Suwon Univ.)
Publication Information
Journal of the Korean Society for Precision Engineering / v.28, no.12, 2011 , pp. 1403-1410 More about this Journal
Abstract
Creep characteristic is an important failure mechanism when evaluating engineering materials that are soft material as polymers or used as mechanical elements at high temperatures. One of the popular thermo-elastic polymers, Polymethyl methacrylate(PMMA) which is used broadly for engineering polymer, as it has excellent mechanical and thermal properties compared to other polymers, was studied for creep characteristic at various level of stresses and temperatures. From the experimental results, the creep limit of PMMA at room temperature is 85 % of tensile strength. which is higher than that of PE (75%)at room temperature. Also the creep limits decreased to nil linearly as the temperatures increased, up to $120^{\circ}C$ of the melting point($267^{\circ}C$). Also the first and third stage among the three creep stages were non-existent nor were there any rupture failure which occurred for many metals at high temperatures.
Keywords
Polymethyl Methacrylate(PMMA); Creep; Creep Limit; Tensile Strength; Secondary(steady) Stage Creep; Rupture; Amorphous;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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