| Zugriffsnummer | 38060 |
| Dokumenttyp | Konferenzartikel |
| Sprache | Englisch |
| Titel | How to reach the world-wide unified scales for Rockwell hardness test with conical indenter |
| Autor(in); Institution |
Barbato, Giulio; Di. C.T.A., University of Messina, ITALY
Desogus, Sergio; Istituto di Metrologia "G. Colonnetti", CNR, Torino, ITALY
Germak, Alessandro; Istituto di Metrologia "G. Colonnetti", CNR, Torino, ITALY
Herrmann, Konrad; 5.21, Härte und Schichtdicke, PTB-Braunschweig und Berlin
Polzin, Thomas; Materialprüfungsamt Nordrhein-Westfalen, Dortmund, GERMANY
|
| Quelle/Jahr | New measurements - challenges and visions: in connection of the World Congress: 2. International Workshop on ADC Modelling and Testing, ISMCR '97 Topical Workshop on Virtual Reality and Advanced Man Machine Interfaches, International CD Symposium; cross directional web measurements, controls and actuator systems in paper machines / XIV IMEKO World Congress, 1-6 June 1997, Tampere, Finland:(1997) |
| Availability | [DVD-ROM] ; file name: TOPIC05\\239_000.htm |
| ISBN | 951-96042-9-4 |
| Verlag | Helsinki: |
| Konferenzangaben | XIV IMEKO World Congress, Tampere, 1-6, June, 1997, FINLAND |
| Freie Schlagworte | Rockwell hardness ; parameters influence ; diamond indenter |
| Zusammenfassung | The aim of achieving world-wide unification for hardness scales using diamond indenter is very important. A co-operative work of some National Metrological Laboratories is necessary, but, before, it shall be defined a common procedure of indentation. This should be performed by means of metrological examinations of influences due to the parameters themselves used for the definition of the scales. Some parameters, that showed to have a very significant influence on measurement results, have been experimentally tested: load dwell times, indentation velocity and indenter geometry. The results show that it is possible to establish a good metrological basis, at least in reference to load dwell times and velocity effects, whereas the measurement of indenter geometry, even with very high accuracy, is not sufficient to guarantee the indenter performances. The preparation of an extended comparison to define world-wide unified scales require, therefore, additional refinements. |
