ISSN:
1573-4803
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract The plastic, elastic and flow properties of the near-surface region of poly(ethylene terephthalate), either amorphous or uniaxially drawn, are measured by means of a sub-microindentation technique with continuous depth recording. The depths investigated range from 0.2 to 6 Μm. The drawn material is harder, with a larger value of elastic recovery parameter and a depth-load characteristic that indicates a departure from typical bulk behaviour. From “slow loading” tests, values of plasticity indices and of Young's modulus are derived. In “abrupt loading” tests the total recoverable deformation is greater: at depths less than 300 nm the behaviour is pseudo-plastic, while at greater depths the deformation is dominated by a Chasset-type anelastic compliance.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00585463
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