Armstrong, Dr. Ronald W.
- Strength and structure of materials
- Dislocation modeling, crystallography
- X‑ray diffraction topography
- Single crystal/polycrystal deformation/fracturing
- Explosive crystals
- Dynamic plasticity
- Fracture toughness
- Hardness testing
- Prosthetic devices
- Electronic materials
- Postdoctoral Studies, Leeds University, UK, 1959
- Ph.D., Carnegie Mellon University, 1958
- B.E.S., Johns Hopkins University, 1955
Honors and Awards
- AIME Robert Lansing Hardy Gold Medal for 1962
- Senior Fulbright‑Hays Fellow, New Zealand, 1974
- NATO Advanced Study Institute Lecturer, England 1979, Crete 1985
- Who's Who in America, 1982‑89
- Liaison Scientist, Office of Naval Research‑London, UK 1982‑1984, 1991
- Visiting Research Fellow, now Life Member, Clare Hall, Univ. Cambridge, UK, 1984
- Symposium in Honor of Professor Ronald W. Armstrong, Dynamic Deformation: Constitutive Modeling, Grain Size, and Other Effects, TMS 2003, 132nd Annual Meeting and Exhibition, 3/2-6/2003, San Diego, CA; see Metall. Mater. Trans. A, 35A, 2545-2745 (2004).
- DYMAT John Rinehart Award, 2015
- Invited to present/publish more than 50 technical papers in Symposia, among more than 300 technical journal and symposium publications.
Professional Memberships and Service
- Fellow - American Society for Metals
- Life Member - Clare Hall, University of Cambridge, U.K.
- Honorary Member - Materials Research Society of India and Indian Institute of Metals
- Member - American Physical Society; American Society for Materials; The (TMS) Minerals, Metals and Materials Society; and, Materials Research Society.
RECENT PUBLICATIONS (among ~350 in journals, books and proceedings)
- R.W. Armstrong, W.L. Elban, and S.M. Walley, Crystal Indentation Hardness, Crystals, Vol. 7, No.1 (2017)
- R.W. Armstrong, Hall-Petch description of nanopolycrystalline Cu, Ni and Al strength levels and strain rate sensitivities, Philosopical Magainze (August 2016).
- R.W. Armstrong, Hall-Petch Relationship: Use in Characterizing Properties of Aluminum and Aluminum Alloys, Encyclopedia of Aluminum and Its Alloys (2016).
- R.W. Armstrong, Crystal Dislocations, Crystals, 6 (1), 9 (2016).
- R.W. Armstrong and J.G. Glenn, Electrical Role for Severe Storm Tornadogenesis (and Modification). Journal of Climatology & Weather Forecasting, Vol. 3, Issue 3 (2015).
- (invited) R.W. Armstrong and Q.Z. Li, Dislocation mechanics of high rate deformations, Metall. Mater. Trans. A, 46A, 4438-4452 (2015).
- R.W. Armstrong, Material grain size and crack size influences on cleavage fracturing, Phil. Trans. R. Soc. A, in theme issue ‘Fracturing across the Multi-scales of Diverse Materials’, R.W. Armstrong, S.D. Antolovich, J.R. Griffiths and J.F. Knott, co-editors, Phil Trans. R. Soc. A, 373, 20140124 (2015) 18 pp.
- V.E. Panin and R.W. Armstrong, Hall-Petch analysis for temperature and strain rate dependent deformation of polycrystalline lead, (Russian) Physical Mesomechanics, 18, , 5-10 (2015).
- (invited) R.W. Armstrong, Plasticity: Grain Size Effects III, Elsevier Materials Science and Materials Engineering (MSME) module, 12/2015 publication.
- (invited) R.W. Armstrong,, Dislocation Pile-Ups, Material Strength Levels and Thermal Activation. Metall., Mater. Trans A, 47A, available online 10/2015.
- (invited) R.W. Armstrong, 60 Years of Hall-Petch: Past to Present Nanoscale Connections, Symp. Strength of Fine Grained Materials – 60 years of Hall-Petch, Univ. Tokyo, 7/16-18/2013; (Japan) Materials Trans., 55, , 2-12 (2014).
- (invited) R.W. Armstrong, Bertram Hopkinson’s pioneering work and the dislocation mechanics of high rate deformations and mechanically-induced detonations, Phil. Trans. Roy. Soc. A, 372, 20130181 (2014); DYMAT Hopkinson 1914-2014 Centenary Conference, Cambridge, U.K., 9/9-11/2014 .
- (invited) R.W. Armstrong, Symmetry aspects of dislocation-effected crystal properties; material strength levels and x-ray topographic imaging, Symmetry, 6, 148-163 (2014).
- (invited) R.W. Armstrong, Sir Alan Cottrell and the dislocation mechanics of fracturing, Cottrell Memorial Symposium, 13th Int. Conf. Fract. (ICF13), 6/16-21/2013, Beijing, CN; Int. J. Strength, Fracture and Complexity 8, 105-115 (2013/2014).
- R.W. Armstrong, W.L. Elban, and S.M. Walley, Elastic, Plastic, Cracking Aspects of the Hardness of Materials. International Journal of Modern Physics B, Vol. 27, No. 8 (2013).