Dynamic and thermal mechanical analyzer having an optical encode

Details Dynamic and thermal mechanical analyzer having an optical encode Dynamic and thermal mechanical analyzer having an optical encode

1996-03-01

1998-01-20

Le, Que

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

2505594, 25023118, 73800, H01J 314

Patent

active

057104263

ABSTRACT:
A dynamic and thermal mechanical analyzer incorporating a slide driven vertically in an air bearing guidance system with a large displacement capacity, very low friction and low mass. The position of the slide is measured by digitizing and interpolating two quadrature output signals generated by an optical encoder with very high spatial resolution and a long stroke. A force is applied to the slide using a linear permanent magnet motor with high force, high force linearity and low sensitivity to temperature variations. Position signals derived from the digitized and interpolated quadrature output signals are analyzed as a function of the applied force to calculate viscoelastic properties of a sample of material.

REFERENCES:
patent: 4019365 (1977-04-01), Woo
patent: 4033181 (1977-07-01), Oeser
patent: 4034602 (1977-07-01), Woo et al.
patent: 4354764 (1982-10-01), Achermann et al.
patent: 4967601 (1990-11-01), Teramoto
patent: 4984469 (1991-01-01), Take et al.
patent: 5154085 (1992-10-01), Takeda
patent: 5187987 (1993-02-01), Anderson et al.
patent: 5200975 (1993-04-01), Kato
patent: 5486923 (1996-01-01), Mitchell et al.
patent: 5488240 (1996-01-01), Hlousek et al.
Wetton, R.E.; Fisher, J.S.; Pettitt, K.E.; Evans, A. and Duncan, J.C., "Third Generation DMTA Instrumentation," American Laboratory, Jan., 1993, pp. 15-20.

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