Measuring and testing – Hardness – By penetrator or indentor
Reexamination Certificate
2005-09-20
2005-09-20
Williams, Hezron (Department: 2856)
Measuring and testing
Hardness
By penetrator or indentor
C073S085000, C073S799000, C073S806000, C073S081000
Reexamination Certificate
active
06945097
ABSTRACT:
The invention involves an apparatus and method for calculating characteristics of materials, such as equivalent strain, using an indenter where the method used is independent of indenter geometry. The method includes performing a scratch test to calculate the strain for each of a plurality of indenter shapes, such as a theoretical sphere and cone, using known equations. The strain of a composite indenter, such as a cone with a rounded tip, can then be determined taking into account contributions from each of the plurality of theoretical shapes.
REFERENCES:
patent: 2801540 (1957-08-01), Rondeau
patent: 3021707 (1962-02-01), Haueisen
patent: 4791807 (1988-12-01), Oechsle
patent: 4852397 (1989-08-01), Haggag
patent: 4856326 (1989-08-01), Tsukamoto
patent: 4984453 (1991-01-01), Enomoto
patent: 5027650 (1991-07-01), Oblas et al.
patent: 5067346 (1991-11-01), Field
patent: 5359879 (1994-11-01), Oliver et al.
patent: 5490416 (1996-02-01), Adler
patent: 5546797 (1996-08-01), Dutta et al.
patent: 5553486 (1996-09-01), Bonin
patent: 5696327 (1997-12-01), Huang et al.
patent: 5866807 (1999-02-01), Elings et al.
patent: 5965896 (1999-10-01), Marton
patent: 6053034 (2000-04-01), Tsui et al.
patent: 6339958 (2002-01-01), Tsui et al.
patent: 6343502 (2002-02-01), Subhash et al.
patent: 6502455 (2003-01-01), Gitis et al.
patent: 6520004 (2003-02-01), Lin
patent: 2002/0104371 (2002-08-01), Gitis et al.
patent: 2146129 (1985-04-01), None
patent: 62245131 (1987-10-01), None
patent: 63015139 (1988-01-01), None
patent: 402095239 (1990-04-01), None
Vaughn et al., “Scratch Indentation, A Simple Adhesion Test Method for Thin Films on Polymeric Supports”, VSP, Adhesion Measurement of Films and Coatings, 1995, pp. 127-142.
Kattamis, T. Z., “On the Evaluation of Adhesion of Coatings by Automatic Scratch Testing”, VSP, Adhesion Measurement of Films and Coatings, 1995, pp. 143-160.
Venkatarama et al., “Continuous Microscratch Measurements of Thin Film Adhesion Strengths”, VSP, Adhesion Measurement of Films and Coatings, 1995, pp. 161-174.
Sarin, V. K., “Micro-scratch Test for Adhesion Evaluation of Thin Films”, VSP, Adhesion Measurement of Films and Coatings, 1995, pp. 175-188.
Fischer-Cripps, A. C., “Nanoindentation”, CSIRO, 2000, pp. 1-24.
Fischer-Cripps, A. C., “Introduction to UMIS II”, CSIRO, 2000, pp. 1-31.
Briscoe, B.J., “Isolated contact stress deformations of polymers; the basis for interpreting polymer tribology”. New Directions in Tribology, Plenary and Invited Papers from the World Tribology Congress, 1st, London, Sep. 8-12, 1997. pp. 191-196.
Bucaille, J.L. et al. “Finite-element analysis of deformation during indentation and scratch tests on elastic-perfectly plastic materials”. Philosophical Magazine A (Phys Conden Matt) vol. 82 (10), Jul. 10, 2002, pp. 2003-2012.
Gauthier, C. et al. Viscoelastic-viscoplastic analysis of a scratching and sliding single contact on a polymer surface. Euromat 2000 Conf Adv Mech Behav Plast Dam 2000, pp. 213-218.
Gauthier, C. et al. “Elastic recovery of a scratch in a polymeric surface: experiments and analysis”. Tribology International vol. 34 (2001) pp. 469-479.
Jardret, V.D. et al. “Understanding and quantification of elastic and plastic deformation during a scratch test”. Wear vol. 218 (1), Jun. 15, 1998, pp. 8-14.
Jardret, V.D. et al. “On the robustness of scratch testing for thin films: the issue of tip geometry for critical load measurement”. Mechanical Properties VIII, MRS Symp Proc vol 594, 2000, pp. 395-400.
Mutoh, Y. et al. “On evaluation of adhesive strength in scratch test of coating materials”. (English abstract) Transactions of the Japan Society of Mechanical Engineers vol. 68(6), Jun. 2002, pp. 909-915.
Randall, N.X. et al. “The effect of intrinsic parameters on the critical load as measured with the scratch test method”. Surface and Coatings Technology vol. 137(2), Mar. 15, 2001, pp. 146-151.
Szudrowicz, M. “About the mechanism of coatings damage during the scratch test”. (English abstract) Tribologia vol. 31 (4), 2000, pp. 723-730.
Xiaoyu, J. et al. “Frictional contact analysis of scratch test for elastic and elastic-plastic thin-coating/substrate materials”. Thin Solid Films vol. 414 (1), Jul. 2002, pp. 63-71.
Xie, Y. et al. “A controlled scratch test for measuring the elastic property, yield stress and contact stress-strain relationship of a surface”. Surface Coatings and Technology vol. 27 (2-3), May 22, 2000, pp. 130-137.
T.W. Wu, “Microscratch and load relaxation tests for ultra-thin films”, J. Mater. Res., vol. 6, No. 2, pp. 407-426, Feb. 1991. XP002900499.
Park et al., “An energy approach to quantification of adhesion strength from critical loads in scratch tests”, Thin Solid Films, Elsevier-Sequoia S.A. Lausanne, CH, vol. 307, No. 1-2, pp. 156-162, Oct. 10, 1997. XP004109332.
Jardret Vincent P.
Morel Pierre Jean
MTS Systems Corporation
Rogers David A.
Westman, Champlin and Kelly, PA
LandOfFree
Characteristic strain and fracture resistance for scratch... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Characteristic strain and fracture resistance for scratch..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Characteristic strain and fracture resistance for scratch... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3440263