| Zugriffsnummer | 11664 |
| Dokumenttyp | Zeitschriftenartikel |
| Sprache | Englisch |
| Titel | An interferometric device for precise thermal expansion measurements on bar-shaped materials |
| Autor(in); Institution |
Suska, Johannes; 5.22, Längen- und Winkelteilungen, PTB-Berlin
Tschirnich, Josef; 5.22, Längen- und Winkelteilungen, PTB-Berlin
|
| Quelle/Jahr | Measurement Science and Technology: 10 (1999), 5, N55 - N59 |
| ISSN | 0957-0233 |
| DOI | |
| Verlag | IOP |
| Freie Schlagworte | thermal expansion ; length measurement ; interferometers ; thermostats |
| Zusammenfassung | This design note describes a special device for dilatometric measurements on bar-shaped materials (length standards in particular). The main part of the device is a new Fizeau-type interferometer with two cube-corner reflectors. The test piece is placed between these reflectors, inside a thermostatically controlled box. Its thermal expansion coefficients are measured completely automatically. Measurement results obtained on various materials and length standards are presented. The overall uncertainty for measurements of bars 1 m in length amounts to less than 2 x 10-8 K-1. |
| Rechteinformation | 1999, IOP Publishing Ltd |