Micron-scale indentation of amorphous and drawn PET surfaces

Autor:	H. M. Pollock, C. Roques-Carmes, R. H. Ion
Rok vydání:	1990
Předmět:	Depth recording Materials science Mechanics of Materials Mechanical Engineering Indentation Solid mechanics Micron scale Modulus General Materials Science Plasticity Deformation (engineering) Composite material Amorphous solid
Zdroj:	Journal of Materials Science. 25:1444-1454
ISSN:	1573-4803 0022-2461
DOI:	10.1007/bf00585463
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::15fbef5aab1cc1ff4272b377be273a71 https://doi.org/10.1007/bf00585463 Zobrazit plný text záznamu Full text from SpringerLink