Resume
Name: Roger B. Clough Born 9/7/41
Roger Clough has introduced a number of innovations to the fields of
nondestructive
evaluation,using acoustic emission, and the mechanical characterization of
materials.
He was co-inventor of the multichannel acoustic emission technique, which is
now accepted
world-wide as the theoretical basis of laboratory acoustic emission
measurements.
He was one of the prime contributors in advancing and implementing the energy
theory of
acoustic emission into a practical quantitative method of source
characterization in complex structures.
In addition, he pio- neered its use in monitoring industrial applications such
as electron
beam surface modification, laser drilling, fracture of materials during
processing, and the
measurement of interface strength in fiber composites. These methods are being
widely adopted
by other researchers. In the area of mechanical properties of materials,
he developed a dislocation theory of multiaxial plasticity, and more recently
has developed a
theory of the densification and distortion of particulate materials which is
being implemented in
finite element calculations in several outside laboratories
that are studying the consolidation of metal powders.
He :
developed the modern theory of acoustic emission with John Simmons
Chairman, NDE In the Nuclear Industry
Edited book, Quantitative NDE in the Nuclear Industry
International Advisory Committee, 14th World Conference on NDT
Member, ASME Committee on Materials Characterization
Was asked to contribute definition of Acoustic Emission for Encyclopeia of
Advanced Materials
Isreal Negev Reaearch followed up on use of his using his method of measuring
proportional limit of materials.
Education:
B.S. (Cum Laude), (1963), Metallurgical Engineering, Lafayette College, Alcoa
Scholar,
member of Phi Beta Kappa and Sigma Xi.
MS (1965) and PhD (1967), Metallurgical Engineering (Physics minor), University
of Arizona.
Fully supported by NASA 4-Year Doctoral Fellowship.
Work Experience:
(1962-1963) Summer student researcher, Westinghouse Atomic Research (Bettis),
Pittsburgh.
Research subject: multiaxial creep.
(1966-69) RCA Sarnoff Laboratories, Princeton, NJ. Research subject:
vapor-phase epitaxial growth of III-V compounds
(1969-2000) National Institute of Standards and Technology (NIST).
Research subjects at NIST:
deformation and fracture of materials and correlations of these with
microstructure and acoustic emission . Applications of acoustic
emission to industrial processes (electron beam surface resolidification,
laser drilling and hydrogen embrittlement cracking).
Publications: About 70 publications, including the book "Quantitative NDE in
the Nuclear Industry".
Professional and International Recognition:
1974-1984, Member of Advisory Board, series of conferences on NDE in the
Nuclear Industry.
In 1982, Chairman of the Fifth International Conference on NDE in the Nuclear
Industry
held in La Jolla, Ca, sponsored by ASM, ASNT, and ASN.
Selected to write the article on "acoustic emission" for the Encyclopedia of
Advanced Materials (1994).
Member of International Advisory Board, 14th World Conference on
Non-Destructive Testing.
Listed in "Marquis' Who's Who in Science and Engineering".
Professional Memberships:
American Society for Metals, the American Society for Testing and Materials,
American Society of Mechanical Engineers, Sigma Xi and Phi beta Kappa.
Patent: Composite Solder, (May 28, 1996) No. 5,520,752 with George Lucey Jr.
and Jennie S. Hwang
Bibliography
1. R. B. Clough, "The Activation Energy for Plastic Flow in Stress Relaxation,"
Physica Status Solidi, Vol.17, p. K175 (1966).
2. R.B. Clough and J. J. Tietjen, "Vapor-Phase Growth of GaAs1-xSbx Alloys
Using Arsine and Stibine,"
Trans. Met. Soc. AIME<-"> Vol. 245, p.583 (1969).
3. J. J. Tietjen, H. P. Maruska, and R. B. Clough, "The Preparation and
Properties of Vapor-
Deposited InAs(1-x)P(x) Alloys Using Arsine and Phosphine," Journal of The
Electrochemical Society Vol. 116, p. 492 (1969).
4. R. B. Clough and L. J. Demer, "Stress Relaxation and the Activation Energy
for Plastic Flow in Solids
- Commercially-Pure Aluminum," Physica Status Solidi, Vol. 36, p. 221 (1969).
5. R.B.Clough and G. W. Geil, Appendix to "Temperature Changes in Specimens in
Microplasticity
Tests", Metallurgical Transactions, Vol.1, p. 1845 (1970).
6. R. B. Clough and L. J. Demer, "Anomalous Dynamic Strain-Aging in
Supersaturated Aluminum Alloys, "
in "Proceedings of the Second International Conference on the Strength of
Metals and Alloys", ASM, p. 356 (1970).
7. C. J. Nuese, D. Richman, and R. B. Clough, "The Preparation and Properties
of Vapor-Grown
In-Ga-P Alloys", Metallurgical Trans., Vol.2, p. 789, (1971).
8. R. B. Clough, "Mobile Dislocation Density and Velocity in Plastically
Deformed Aluminum
at Room Temperature," Scripta Metallurgica, Vol.6, p. 293, (1972).
9. R. B. Clough and J. A. Simmons, "A Theory of Multiaxial Plasticity Based on
Integral
Dislocation Dynamics," <+">Acta Metallurgica, <-">Vol. 22, pp. 513-521 (1974).
10. R. B. Clough and J.A. Simmons, "Thermodynamics of Dislocation Motion in
Multiaxial Stress Fields,"
in "Rate Processes in Plastic Deformation " (Proceedings of the Dorn Memorial
Symposium),
J. C. M. Li and A. K.Mukherjee (eds.), ASM, (1975). (Invited paper.)
11. R.B. Clough, "A New Method for Determination of Proportional Limit and
Machine Stiffness ",
Journal of Testing and Evaluation, ASTM, Vol. 3, No.2, p.143 (1975).
12. R. B. Clough, "The Effects of Specimen Size and Microstructure on the
Larson-Miller Parameter,"
Scripta Metallurgica, Vol. 9, p. 1325, (1975).
13. R. B. Clough, "Rational Basis and New Methods for Proportional Limit,
Machine Stiffness,
Critical Stress Intensity and Crack Velocity Measurements," in Recent
Developments in Mechanical
Testing, STP 608, ASTM (1976).
14. R. B. Clough, "A Note on the Measurement of Proportional Limit Under
Multiaxial Stress",
Journal of Testing and Evaluation, Vol.4, p. 139 (1976).
15. J.A.Simmons and R. B. Clough, "Theoretical Aspects of Acoustic Emission
Spectral Measurements,"
Proceedings of the Eight World Conference on Nondestructive Testing, Cannes,
France, Sept., pp. 1-8 (1976).
16. J. A. Simmons and R.B. Clough, "Theoretical Elements of Acoustic Emission
Spectra,"
Proceedings of the ARPA/AFML Review of Progress in Quantitative NDE, Tech.
Report AFML-
TR-77-44 (1977).
17. R. B. Clough, D. J.Chwirut and R. L. Bloss, "Impact Testing of Frangible
Couplings,"
NBS Tech. Report 10-810 (1972).
18. D. C. Robinson and R. B. Clough, "Evaluation of the Thrown Objects Test For
Proposed
Lawnmower Safety Standard," NBS Tech. Report<+"> <-">76-1022 (1976).
19. "Acoustic Emission in Nuclear Applications--The State of the Art",
Nondestructive
Evaluation in the Nuclear Industry, Salt Lake City, (Feb. 1980) (Invited paper)
20. D. G. Eitzen, F. R. Breckenridge, R. B. Clough, E. R. Fuller, N. Hsu and J.
A. Simmons,
"Fundamental Developments for Quantitative Acoustic Emission Measurements,"
Electric Power
Research Institute, Report RP608-1, Palo Alto, CA (1981).
21. L. J. Swartzendruber, W. J. Boettinger, L. K. Ives, S. R.Coriell, D. B.
Ballard, D. E.
Laughlin, R. B. Clough, F. S. Biancaniello, P. J. Blau, J. W. Cahn, R.
Mehrabian, G. Free,
H. Berger and L. Mordfin, "NBS Nondestructive Evaluation of Nonuniformities in
2219
Aluminum Alloy Plate- Relation to Processing," NBS IR 2069 (1981).
22. D. G. Eitzen, F. R. Breckenridge, R. B. Clough, E. R. Fuller, N. N. Hsu and
J. A. Simmons,
"Summary of Fundamental Developments for Quantitative Acoustic Emission
Measurements,"
Electric Power Research Institute, International Report No. N8-1877 (1981).
23. D. G. Eitzen, F. R. Breckenridge, R. B. Clough, E. R.Fuller, N.Hsu and J.
A.Simmons,
"Summary Report on the Electric Power Research Institute /National Bureau of
Standards Joint
Program on Acoustic Emission," EPRI International Report (1981).
24. J. A. Simmons and R. B. Clough, "Theory of Acoustic Emission,"
International Conference
on Dislocation Modelling in Physical Systems, J. Hirth and M. Ashby (eds.),
Pergamon Press, Oxford, p. 464 (1981).(Invited paper.)
25. R.B.Clough and J.A. Simmons, "Reproducible Acoustic Emission Signatures by
Indentation in Steels," Materials Evaluation, Vol. 39, pp. 1026-1031 (1981).
26. R. B. Clough, J. Chang, and J. Travis, "Acoustic Emission Signatures and
Source
Microstructure Using Indentation Fatigue and Stress Corrosion Cracking in
Aluminum Alloys,"
Scripta Met., Vol. 15, pp. 417-411 (1981).
27. D. Eitzen, F. Breckenridge, R. Clough, N. Hsu, T. Proctor and J. Simmons,
"NBS
Developments in Quantitative Acoustic Emission Measurements," Review of
Progress in Quantitative
NDE, Boulder, CO (Aug. 1981).
28. R. Mehrabian, H. N. G. Wadley, R. B. Clough, S.Fick, S. Ridder, M. Rosen,
J. Simmons,
"NDE and RSP: Research on Coupling Two Emerging Technologies," Tech. Report
DARPA, DARPA Order
No. 4275, (1982).
29. R. B. Clough and H. Wadley, "Indentation Loading Studies of Acoustic
Emission
from Temper and Hydrogen Embrittled A533B Steel," Met. Trans. A. Vol. 13A,
pp. 1965-1975 (1982).
30. D. G. Eitzen, F. Breckenridge, R. B. Clough, N. N. Hsu, T. Proctor and J.
Simmons,
"NBS Developments in Quantitative Acoustic Emission Measurements", in Review of
Progress in
Quantitative NDE, D. Thompson (ed.), (1982)
31. R. B. Clough and J. A. Simmons, "Reproducible Acoustic Emission Signatures
by
Indentation in Steels," Review of Progress in Quantitative NDE, AFWAL Tech.
Report AFWAL-
TR- 81- 4080, (Sept.. 1981).
32. R. B. Clough and H. Wadley, "Indentation Loading Studies of Acoustic
Emission from Temper and
Hydrogen Embrittled A533B Steel," Report No. AERE- R-10400, U.K.A.E.A.,
Harwell, U.K. (Dec., 1981).
33. D. G. Eitzen, F. Breckenridge, R. Clough, N.Hsu, T. Proctor, J. Simmons, C.
Stockton and
H. Wadley, "Fundamental Developments in Acoustic Emission Measurements: The NBS
Program," in
"Quantitative NDE in the Nuclear Industry", R. B.Clough (ed.), American Soc.
for Metals,
Metals Park, OH, p. 315 (1983).(Invited paper.)
34. R. B. Clough (ed.), "Quantitative NDE in the Nuclear Industry", (Book),
American Society for Metals, Metals Park, Ohio (1983).
35. R. B. Clough, H. N. G. Wadley and R. Mehrabian, "Heat Flow- Acoustic
Emission -
Microstructure Correlations in Rapid Surface Solidification,"<+">International
Conf. on
Applications of Lasers in Materials Processing, S. Copley and C. Metzbower
(eds.),
Los Angeles, Cal., American Society for Metals , Metals Park OH, p. 37
(1983).(Invited paper.)
36. R. B. Clough, H. N. G. Wadley, and R. Mehrabian, "Experimental Studies of
the Dynamics
of Rapid Solidification," Third Conference on Rapid Solidification Processing:
Principles
and Technologies III, R. Mehrabian (ed.), NBS, pp. 403-415 (1983) (Invited
paper.)
37. R. B. Clough, F. S. Biancaniello and H. N. G. Wadley, "Acoustic Emission
Studies of
Electron Beam Melting and Rapid Solidification," in Applications and
Development of NDE for
Use in Materials Processing, O. Buck and S. Wolf (eds.), ASM, Metals Parks, OH
p.27 (1984).
38. R. B. Clough and H. Wadley, "Acoustic Emission Studies of Dislocation
Motion and
Microfracture in Rapid Solidification in Aluminum Alloys," Review of Progress
in
Quantitative NDE, Pergamon Press, Oxford (1985).
39. R. B. Clough, H. N. G. Wadley, and R. J. Schaefer "Acoustic Emission
Monitoring
of Laser Drilling," in NDE of Microstructure for Process Control, H.. Wadley
(ed.),
Amer.Soc. for Metals, Metals Park, OH, p. 133 (1985) (Invited paper).
40. R. B. Clough and H. N. G. Wadley, "Acoustic Emission Monitoring of
Dislocation
Motion During Electron Beam Melting and Rapid Solidification of Aluminum
Alloys",
in Review of Progress in Quantitative Nondestructive Evaluation,
D. O. Thompson and D. E. Chimenti (eds.), Vol.4B, p.661 (1985).
41. R. B. Clough, H. N. G. Wadley and F. S. Biancaniello, "Fracture Mechanisms
in Single Crystal Composites", J. Acoustic Emission, p.569 (1986).
42. R. B. Clough, "The Energetics of AE Source Characterization", Materials
Evaluation, Vol. 45, p. 556 (1987).
43. R. B. Clough, H. N. G. Wadley and R. Mehrabian, "Acoustic Emission Studies
of Electron Beam Surface Modification of Aluminum", Met. Trans. Vol. 19B,
pp.493-503 (1987).
44. R. B. Clough, F. S. Biancaniello and H. N. G. Wadley, "Measurement of Fiber
Fracture and Fiber-Matrix Interface Shear Strengths in Metal Matrix
Composites",
Proc. of a Conf.on Nondestructive Testing and Evaluation of Advanced Materials
and Composites, H. Mindlin (ed.), publ. by Battelle Mem. Inst., Columbus, OH
(1987). (Invited paper.)
45. R.B. Clough, F.S. Biancaniello and H. Wadley, "Micromechanical Studies of
Model
Metal Matrix Composites", Materials Research Society Symposium Vol. 120,
pp.35-44 (1988)
(Invited paper.)
46. J. A. Simmons, R. B. Clough, E. D. Krasicka, F. Biancaniello, M. Rosen, T.
Hsieh,
and H.Wadley, "Composite Materials Interface Characterization", NBS Tech.
Report (1987).
47. R. B. Clough, F. S. Biancaniello, H. Wadley, and U. R. Kattner, "Fiber and
Interface Fracture in Single-Crystal Aluminum/SiC Fiber Composites",
Metallurgical
Transactions, Vol. 21A, pp. 2747- 2757 (1990).
48. J. J. Wlassich and R. B. Clough, "Investigation Into a Practical Grain
Growth
Model for Hot Isostatic Pressing", Proceedings, Second Int.Conf. on Hot
Isostatic
Pressing, R.Schaefer (ed.), ASM, (1991) (Invited Paper).
49. H. Wadley, R. J. Schaefer, A.H.Kahn, M.F.Ashby, R.B.Clough, Y.Geffen, and
J.J.
Wlassich, "Sensing and Modeling of Hot Isostatic Pressing of Copper Powders",
Proceedings, Second Int. Conf. on Hot Isostatic Pressing, R. Schaefer, ed.,
ASM (1991). (Invited Paper.)
50. R. B. Clough and R. J. Schaefer, "The Micromechanics of Densification and
Distortion",
Fourth International Conf. on Isostatic Pressing, (ISO4), Stratford-Upon-Avon,
UK, (1990), Paper No. 38.
51. H.Wadley, R.J.Schaefer, A.H.Kahn, M.F.Ashby, R.B.Clough, Y.Geffen, and
J.J.Wlassich, "Sensing and Modeling of the Hot Isostatic Pressing of Copper
Powders",
Acta Metall.Mater, (1991), Vol. 39, pp. 979-986.
52. J. S. Hwang, G. Lucey, R. B. Clough and J. Marshall, "Futuristic Solders -
Utopia or Ultimate Performance?", Surface Mount Technology, Vol. 5, No. 9
(Sept., 1991), pp. 40-41. (Invited paper).
53. A. Manor and R. Clough, "In-Situ Determination of Fiber Strength and
Segment Length in Composites Using Acoustic Emission", Composites Science and
Technology, Vol. 45 (1992) pp. 73-81.
54. R. Clough, "Application of Acoustic Emission to Studying Fiber
Fragmentation
as a Process in Single Fiber Composites", Review of Progress in Quantitative
Nondestructive Evaluation, D. Thompson (ed.), Vol 11b , pp. 1515-1522 (1991)
55. R. B. Clough, "A Scalar Approach to Acoustic Emission", International
Symposium
on Vibroacoustic Characterization of Materials and Structures, P.K.Raju (ed.),
ASME, (1992). (Invited paper.), pp.101-110.
56. R.B.Clough and R.F.Schaefer, "Effects of Shear Stress and Void Shape Change
on the Distortion and Densification of Powder Compacts", Materials Science and
Technology, Vol. 9, pp. 328-335, (1993).
57. R. B. Clough, R. Patel, J. S. Hwang, and G. Lucey, "Preparation and
Properties
of Reflowed Paste and Bulk Composite Solder", National Electronic Packaging and
Production Conference (NEPCON West `92), Proc. Technical Program, Vol. III,
pp.1256-1265. (Invited paper.)
58. R.B. Clough and J.A.Simmons, "Acoustic Emission", Encyclopedia of Advanced
Materials,
D. Bloor, R. Brook, M. Flemings, and S. Mahajan, (eds.) Pergamon Press, (1994)
(Invited article) .
59. R. B. Clough, A. J. Bayba, A. J. Shapiro, and G. K. Lucey, Jr., "Boundary
Layer
Fracture of Copper/Composite Solder Interfaces", First ASME International
Electronic
Packaging Conference, (SUNY, Binghamton, NY, 9/93), ASME.
60. R. B. Clough, A. J. Bayba, and G. K. Lucey, Jr., "Finite Element Studies of
Edge Shape and Boundary Conditions on the Stresses in Single Lap Shear Layers",
First ASME International Electronic Packaging Conference, (SUNY, Binghamton,
NY,
9/93), ASME.
61. Roger B. Clough, A.J. Shapiro and G. K. Lucey, Jr., "Effects of Residual
Porosity On the Strength of Sn-Pb/Cu(6)Sn(5) PARTICULATE COMPOSITEs,
Materials Science and Technology, Vol.10, (1994) pp.696-701.
62. John T. Barnett, Roger B. Clough and Benjamin Kedem, "Power Considerations
in Acoustic Emission", Jour. of the Acoustic Society of America (1995),<-">
Vol. 98,
pp.2070-2081.
63. R. B. Clough, A. J. Shapiro, A. J. Bayba, and G. K. Lucey, Jr., "Boundary
Layer Fracture
in Composite Solder Joints", Journal of Electronic Packaging, Vol. 117 (Dec.
1995), pp.270-274.
64. J.T. Barnett, R.B. Clough and B.Kedem, "Power Considerations in Acoustic
Emission",
Technical Research Report, T.R. 95-42, Univ. of Maryland (1995)
65. R.B. Clough and W.G. McDonough, "The Measurement of Fiber Strength
Parameters
in Fragmentation Tests By Using Acoustic Emission", Composites Science and
Technology,
Vol. 56, pp.1119-1127, (1996)
66. R. B. Clough and Richard J. Fields,"Yield Surface for Porous Metal Matrix
Composites", for IUTAM "Symposium on Mechanics of Granular and Porous
Materials",
` paper not ready at time of conference manual, so not in conf. proceedings
other
than abstract but sent to all participants afterward (Invited paper, Cambridge
Univ., July 15-17 1996). For the published text, see No.68 below.
67. Charles Hagwood, Roger Clough and Richard Fields, "Estimation of the
Stress-
Threshold For the Inverse Weibull Power Law", IEEE Transactions of Reliability,
Vol.48, pp.176-181 (1999).
68. R. B. Clough and R.J. Fields, "Effects of Bond Strength on Densification
and Flow
of Powder Compacts", Powder Metallurgy, Vol.43, pp.263-269 (2000).
69. Roger B. Clough, Stephen C. Webb and Ronald W. Armstrong, "Dynamic hardness
measurements
using a dropped ball: with Application to 1018 Steel", Materials Science and
Engineering,
A360 (2003) 396-407.
70. Armstrong, Ronald W.; Clough, Roger B.; Kish, Laszlo B.; Lucey, George K.
"The dancer and the piper: resolving problems with government research
contracting",
Defense AT & L, November 1, 2004
<-----------------------------------------------------------------------------------------
[Roger Clough], [[email protected]]
12/8/2012
"Forever is a long time, especially near the end." -Woody Allen
[Roger Clough], [[email protected]]
12/12/2012
"Forever is a long time, especially near the end." -Woody Allen
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