Abstract
An unbonded resistance wire strain gage is described that is sensitive to small forces, has high precision and accuracy, and is simple to construct. The low inertia and high stability of this gage make it especially suitable for the precise measurement of stress relaxation in single textile fibers over periods lasting from milliseconds to as long as 2 months or more. The output of the gage is sufficient for direct coupling to recording potentiometers.
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References
1.
Ballou, J.W.
, Am. Soc. Testing Materials Bull . No. 150 , 38 (1948 ).
2.
Baxter, S.
, and
Vodden, H.A.
, J. Sci. Instruments
27 , 187 (1950 ).
3.
Burr, G.S.
, Electronics
22 , No. 5 , 101 (1949 ).
4.
Driver-Harris Co., Harrison, N. J., "Nichrome Electrical Alloys," Cat. R-50.
5.
Hill, A.V.
, J. Sci. Instruments
26 , 128 (1949 ).
6.
Hindman, H.
, and
Krook, C.M.
, TEXTILE RESEARCH JOURNAL
15 , 233 (1945 ).
7.
Kubu, E.T.
, TEXTILE RESEARCH JOURNAL
22 , 765 (1952 ).
8.
McLoughlin, J.
, Rev. Sci. Instruments
23 , 459 (1952 ).
9.
Meyer, R.D.
, Instruments
19 , 136 (1946 ).
10.
Minneapolis-Honeywell Regulator Co., servo-amplifier No. 351921, Instrumentation Data Sheet No. 10.20-3 and two phase balancing motor (27, 54, 162 r.p.m., 13.5 watt), Instrumentation Data Sheet No. 10.20-2a.
11.
Minneapolis-Honeywell Regulator Co., servo-amplifier type 12X, No. 354574, Instrumentation Data Sheet No. 10.20-4.
12.
Reichardt, C.H.
,
Schaevitz, H.
, and
Dillon, J.H.
, Rev. Sci. Instruments
20 , 509 (1949 ).
13.
Sookne, A.M.
, and
Rutherford, H.A.
, J. Research Natl. Bur. Standards
31 , 25 ( 1943 ).
14.
Statham Laboratories
, "Instrument Notes " No. 18 (Nov.-Dec. 1950 ).
15.
Stein, R.S.
, and
Schaevitz, H.
, Rev. Sci. Instruments
19 , 835 (1948 ).