Nano indentation is an effective method for materials mechanical characterisation at grain scale. Literature underlined relevance of testing machine calibration to measurement uncertainty of the mechanical characterisation. ISO 14577-2 defines multi-step iterative methods for calibrating frame compliance and indenter area function that do not require high-resolution microscopes. Previous research demonstrated that standard’s recommendations are unsatisfactory and result in high calibration uncertainty. This work defines an improved calibration method based on a single-step procedure that achieves, as proved by experimental tests, definite advantages in terms of implementation and measurement uncertainty of both calibration and mechanical characterisation with respect to current procedures.
Single-step calibration method for nano indentation testing machines / GALETTO, MAURIZIO; GENTA, GIANFRANCO; MACULOTTI, GIACOMO. - In: CIRP ANNALS. - ISSN 0007-8506. - ELETTRONICO. - (In corso di stampa).
|Titolo:||Single-step calibration method for nano indentation testing machines|
|Data di pubblicazione:||Being printed|
|Appare nelle tipologie:||1.1 Articolo in rivista|