An Analysis of Aging Characteristics of Tilting Train under Accelerated Aging Environment |
| Journal |
Key Engineering Materials (Volumes 385 - 387) |
| Volume |
Advances in Fracture and Damage Mechanics VII |
| Edited by |
H.S. Lee, I.S. Yoon and M.H. Aliabadi |
| Pages |
33-36 |
| DOI |
10.4028/www.scientific.net/KEM.385-387.33 |
| Online since |
July, 2008 |
| Authors |
Jeong Pyo Nam,
Sung Ho Yoon,
Young Eun Hwang,
Hong Li,
Qing Fen Li
|
| Keywords |
DMA, Environmental Factor, Thermo-Mechanical Couple, Tilting Train, UTM |
| Abstract |
In this study, the effect of combined environmental factors such as ultraviolet ray, high
temperature and high moisture on mechanical and thermal analysis properties of glass fabric and
phenolic composites are evaluated through a 2.5KW accelerated environmental aging tester. The
environmental factors such as temperature, moisture and ultraviolet ray applied of specimens. A
xenon-arc lamp is utilized for ultraviolet light and exposure time of up to 3000 hours are applied.
Several types of specimens - tensile, bending, and shear specimens that are warp direction and fill
direction are used to investigate the effects of environmental factors on mechanical properties of the
composites. Mechanical degradations for tensile, bending and shear properties are evaluated
through a Universal Testing Machine (UTM). Also, storage shear modulus, loss shear modulus and
tan δ are measured as a function of exposure time through a Dynamic Mechanical Analyzer (DMA).
From the experimental results, changes in material properties of glass fabric and phenolic
composites are shown to be slightly degraded due to combined environmental effects. |
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