Thermal measuring and testing – Thermal testing of a nonthermal quantity – Expansion or contraction characteristics
Patent
1989-01-24
1990-05-08
Shoap, Allan N.
Thermal measuring and testing
Thermal testing of a nonthermal quantity
Expansion or contraction characteristics
374 56, 336 30, 336136, G01N 2516
Patent
active
049233076
ABSTRACT:
An improved dilatometer suitable for testing the coefficient of thermal expansion (CTE) of a workpiece. The workpiece having a CTE in the range of -0.2.times.10.sup.-6 inch/inch .degree.F. to 0.2.times.10.sup.-6 inch/inch/.degree.F. The improvement includes a reference structure means for positioning and isolating the workpiece, and for maintaining an independent reference temperature, uninfluenced by a required workpiece temperature differential. The temperature independent reference structure means helps assure that measurements of expansions/contractions of the workpiece, as a function of temperature, are uniquely that of the workpiece, and not that of the reference structure means, or any other ambient temperature determinant. The improved dilatometer is particularly useful for determining the CTE of a workpiece having a relatively low value, e.g., a CTE less than 0.1.times.10.sup.-6 inch/inch .degree.F.
REFERENCES:
patent: 2627062 (1953-01-01), Graham
patent: 3151399 (1964-10-01), MacGeorge
patent: 3617964 (1971-11-01), Bocksruker
patent: 3680357 (1972-08-01), Clusener
patent: 3898836 (1975-08-01), Clusener
patent: 3919879 (1975-11-01), Betz
patent: 4521119 (1985-06-01), Stepke et al.
patent: 4548515 (1985-10-01), Cluesener
patent: 4762424 (1988-08-01), Baricevac et al.
Dupont 940 Thermomechanical Analyzer, Pamphlet (1967).
Lloyd, L. T. "Recording Quartz Differential Dilatometer", Argonne National Laboratory, ANL-5372 (Jul. 1959).
Hyde, G. R. et al., "Improved Dilatometer", The Review of Scientific Instruments, vol. 36, No. 2, pp. 204-205 (Feb. 1965).
Loubser, P. J. et al., "An Apparatus for Determining the Coefficient for Thermal Expansion of Rocks Mortars and Concretes", Magazine of Concrete Research, vol. 24, No. 79, pp. 97-100 (Jun. 1972).
Gilmore James F.
Lloyd Carl A.
Eastman Kodak Company
Gutierrez Diego F. F.
Kaufman Stephen C.
Shoap Allan N.
LandOfFree
Dilatometer does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Dilatometer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dilatometer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2345317