LIGO Document G1701306-v1

Comparing the low-frequency performance of maraging and glassy metal cantilever blade springs

Document #:
Document type:
G - Presentations (eg Graphics)
Other Versions:
Virtually all cantilever blade springs used in gravitational wave detectors for seismic attenuation are made with maraging steel. Geometric anti-spring filters made from this material and designed to reach arbitrarily low resonant frequencies have shown instabilities that impede their tuning below 1⁄2 Hertz. The instability and low frequency noise can be attributed to self-organized criticality effects within the material. The suspects are avalanches of disentangling/re-entangling dislocations that randomly change the filterís equilibrium point.
Files in Document:
Associated with Events:
Amaldi 12 held on 09 Jul 2017 in Hilton Hotel, Pasadena, CA

DCC Version 3.4.3, contact Document Database Administrators