- Measures internal friction of metal materials at a low frequency of 0.2 to 2 Hz -
Vertical torsion pendulum type internal friction measuring instrument for measuring internal friction at a low frequency. A trace amount of sample can be analyzed by the Snoek peak measurement of carbon and nitrogen because the sample is not heated to a high temperature.
1. Snoek peak separation of a trace amount of carbon and nitrogen mixed homogeneously in steels
1.
Tension applied to the sample can be held at a constant level by the
reverse pendulum method
2. The average logarithmic attenuation rate can
be measured by the free attenuation method
3. Analysis can be made by PC
| Temperature range | ① Room Temperature to 600 ℃ ② －150 to 250 ℃ |
| Sample size | Sheet: 5mm wide ´ 90mm long ´ 0.3 to 1.0mm thick Wire: 1.2mm to 2mm dia. ´ 90mm long (measurable length) |
| Frequency range | 0.2 to 2 Hz in the free attenuation method |
| Angular amplitude range | 1 ×10-3 to 1 × 10－2 rad |
| Measurement atmosphere | Vacuum, helium gas (low temperature type) |
