Optics: measuring and testing – By light interference – Having wavefront division
Reexamination Certificate
2011-07-12
2011-07-12
Lyons, Michael A (Department: 2877)
Optics: measuring and testing
By light interference
Having wavefront division
C374S055000
Reexamination Certificate
active
07978342
ABSTRACT:
Methods for measuring expansion of a test sample. One method includes establishing a diffraction slit between two blades, with the position of at least one of the blades being dependent upon the length of a test sample of material. As the temperature of the sample changes, the width of the slit changes. Light is projected through the slit onto a target and an diffraction pattern is measured. Changes in the light diffraction pattern correspond to the thermal expansion of the sample. Another method includes establishing a diffraction slit between two blades, with the position of at least one of the blades being dependent upon a length along a test sample of material. As a load is applied to the test sample, the width of the slit changes. Changes in the light diffraction pattern correspond to Young's Modulus for the sample.
REFERENCES:
patent: 2351572 (1944-06-01), Kingston
patent: 2546796 (1951-03-01), Swanson et al.
patent: 3884581 (1975-05-01), Pryor
patent: 4014613 (1977-03-01), Sharpe et al.
patent: 4591996 (1986-05-01), Vachon
patent: 4924477 (1990-05-01), Gilmore et al.
patent: 4989980 (1991-02-01), Berg
patent: 5121987 (1992-06-01), Berg
patent: 5221142 (1993-06-01), Snow
patent: 5231285 (1993-07-01), Berg
patent: 5298970 (1994-03-01), Takamatsu et al.
patent: 5362151 (1994-11-01), Ollivier et al.
patent: 5479261 (1995-12-01), Hansen
patent: 5870195 (1999-02-01), Sasan
patent: 6687011 (2004-02-01), Lee et al.
patent: 9512802 (1995-05-01), None
Hasan Fakhruddin, Quantitative Investigation of Thermal Expansion Using Single-Slit Diffraction, The Physics Teacher, 2006, pp. 47-49, vol. 44, The Indiana Academy for Science, and Humanities, Ball State University, Muncie, Indiana.
S.S.R. Inbanathan, K. Moorthy, and G. Balasubramanian, Measurement and Demonstration of Thermal Expansion Coefficient, The Physics Teacher, Dec. 2007, pp. 566-567, vol. 45, Apparatus for Teaching Physics, Department of Physics & Astronomy, SUNY-Stony Brook, Stony Brook, NY.
R. Mostert, Classroom Experiments on Thermal Expansion of Solids, The Physics Teacher, Jan. 1992, p. 15, vol. 30, Vondelstraat 270, 1814 MC Alkmaar, The Netherlands.
Ricardo Trumper and Moshe Gelbman, Measurement of a Thermal Expansion Coefficient, The Physics Teacher, Oct. 1997, pp. 437-438, vol. 35, School of Education of the Kibbutz Movement, Haifa University, Israel, and Physics Project—Tomorrow 98, Hebrew University, Jerusalem.
Carl H. Hayn, Thermal Contraction and Stretching, The Physics Teacher, Jan. 1998, p. 14, vol. 36, Department of Physics, Santa Clara University, Santa Clara, CA.
Peter Insley, Chris Chiaverina and Jim Hicks, Doing physics—Physics activities for groups, The Physics Teacher, Nov. 1984, pp. 530-531, Department of Physics, Illinois Institute of Technology, Chicago, Illinois.
C.H. Blanchard, Thermal-expansion heat engine, The Physics Teacher, May 1983, p. 319, Department of Physics, University of Wisconsin, Madison, Wisconsin.
Hasan Fakhruddin, Thermal Expansion “Paradox”, The Physics Teacher, Apr. 1993, p. 214, vol. 31, Indiana Academy for Science, Mathematics, and Humanities, Ball State University, Muncie, IN.
John D. Cutnell and Kenneth W. Johnson, Linear Thermal Expansion, Physics, 2004, pp. 341-348, Chapter 12, 6th Edition, John Wiley & Sons, Inc., Hoboken, NJ.
John D. Cutnell and Kenneth W. Johnson, Thin-Slit Diffraction, Physics, 2004, pp. 831-836, Chapter 27, 6th Edition, John Wiley & Sons, Inc., Hoboken, NJ.
Dilatometers and Thermal Expansion, Anter Corporation, http://www.anter.com, Jan. 23, 2006, Pittsburgh, PA.
PMIC (Precision Measurements and Instruments Corporation), http://www.pmiclab.com, Nov. 1, 2006, Corvallis, OR.
Theta Industries, Inc., http://theta-us.com, Nov. 1, 2006, Port Washington, NY.
National Physical Laboratory, http://www.npl.co.uk, Nov. 1, 2006, Middlesex, United Kingdom.
Orton Ceramic (USA), http://www.ortonceramic.com/industrial/testing.html, Nov. 1, 2006, Westerville, OH.
Vishay America, business-americas@vishay.com, Nov. 1, 2006, Shelton, CT.
Ball State University Board of Trustees
Bingham McHale LLP
Boots Daniel L.
Lyons Michael A
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