Ares J. Rosakis

Ares J. Rosakis 2012

Ares J. Rosakis (Άρης Ροζάκις, born September 12, 1956 in Athens ) is a Greek - American mechanical and aerospace engineer at the California Institute of Technology (Caltech).

biography

Rosakis earned both a bachelor's and master's degree in engineering from Oxford University in 1978 . In 1980 another master’s degree followed and in 1982 a Ph.D. at Brown University . In the same year he received his first professorship (assistant professor) at Caltech, in 1988 he became an associate professor , and in 1993 he was given a full professorship. Since 2004 he has been Professor of Aeronautics and Mechanical Engineering, succeeding Wolfgang Knauss Theodore von Kármán . Visiting professorships led him to the École normal supérieure (Paris) and Oxford University.

Rosakis recognized as a leader in the area of dynamic material failure solid materials, composite materials and compounds. Using high-speed photography , real-time measurements of temperature fields close to dynamically developing cracks and adiabatic shear bands, as well as newly developed optical and dynamic infrared methods, he investigates ductile fractures . He is considered the inventor of Coherent Gradient Sensing Interferometry (CGS interferometry). Further work deals with cracks in heterogeneous materials and composite materials, especially under shear conditions, with the crack mechanics of earthquakes , with the reliability of thin films and with in-situ measurement technology at the wafer level.

Rosakis has (as of July 2018) an h-index of 60. He has both Greek and US citizenship.

Fonts (selection)

• with K. Ravi-Chandar: On crack-tip stress state: an experimental evaluation of three-dimensional effects, International Journal of Solids and Structures, Volume 22, 1986, pp. 121-134
• Editor with K. Ravi-Chanda: Analytical, numerical, and experimental Aspects of three dimensional fracture processes, ASME 1988
• Editor with WG Knauss: Non-linear fracture: contributions to an international Symposium, 4 volumes, Kluwer 1990
• Editor with HP Rosmanith: Dynamic Failure of Materials: Theory, Experiments and Numerics, Elsevier Applied Science 1991
• with HA Bruck, T. Christman, WL Johnson: Quasi-static constitutive behavior of bulk amorphous alloys, Scripta Metallurgica et Materialia, Volume 30, 1994, pp. 429-434${\ displaystyle Zr_ {41.25} Ti_ {13.75} Ni_ {10} Cu_ {12.5} Be_ {22.5}}$
• with HA Bruck, WL Johnson: The dynamic compressive behavior of beryllium bearing bulk metallic glasses, Journal of Materials Research, Volume 11, 1996, pp. 503-511
• with O. Samudrala, D. Coker: Cracks faster than the shear wave speed, Science, Volume 284, 1999, pp. 1337-1340
• with P. Rosakis, G. Ravichandran, J. Hodowany: A thermodynamic internal variable model for the partition of plastic work into heat and stored energy in metals, Journal of the Mechanics and Physics of Solids, Volume 48, 2000, p. 581– 607
• with J. Hodowany, G. Ravichandran, P. Rosakis: Partition of plastic work into heat and stored energy in metals, Experimental mechanics, Volume 40, 2000, pp. 113-123
• with Michel Bouchon, Marie-Paule Bouin, Hayrullah Karabulut, M. Nafi Toksöz, Michel Dietrich: How fast is rupture during an earthquake? New insights from the 1999 Turkey earthquakes, Geophysical Research Letters, Volume 28, 2001, pp. 2723-2726
• with K. Xia, H. Kanamori: Laboratory earthquakes: The sub-Rayleigh-to-supershear rupture transition, Science, Volume 303, 2004, pp. 1859-1861