Title :
Measurements of torsion fiber anelastic properties in preparation for a new measurement of G
Author :
Bantel, M.K. ; Newman, R.D.
Author_Institution :
Dept. of Phys. & Astron., California Univ., Irvine, CA, USA
Abstract :
We present results of measurements of anelastic properties of CuBe and Al5056 torsion fibers at low temperature, and discuss their implications for a planned measurement of G using a cryogenic torsion pendulum. It appears that anelastic behavior should not limit a G measurement at a level of a few ppm.
Keywords :
aluminium alloys; anelastic relaxation; beryllium alloys; copper alloys; fibres; gravitational constant; internal friction; low-temperature techniques; magnesium alloys; measurement uncertainty; pendulums; torsion; Al5056 fiber; AlMg; CuBe; CuBe fiber; anelastic properties measurement; anelastic relaxation; cryogenic torsion pendulum; dynamic mode; gravitational constant measurement; internal friction; low temperature; systematic error; torsion fibers; uncertainty; Astronomy; Cryogenics; Extraterrestrial measurements; Force measurement; Frequency measurement; Noise level; Noise reduction; Physics; Q measurement; Temperature sensors;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 1998 Conference on
Conference_Location :
Washington, DC, USA
Print_ISBN :
0-7803-5018-9
DOI :
10.1109/CPEM.1998.699830
