Zobrazeno 1 - 10
of 45
pro vyhledávání: '"Davis L. Tonks"'
Publikováno v:
Journal de Physique IV (Proceedings). 134:9-15
Recent work [1 ] on recovered tantalum gas gun and HE driven samples has shown that incipient damage forms a path with a well defined roughness exponent. The path involves regions of localized plastic flow, in the HE driven case, and localized flow r
Publikováno v:
Journal de Physique IV (Proceedings). 110:893-898
A cell model for void coalescence for ductile damage in metals is presented. The basic mechanism is void linking through an instability in the intervoid ligament. The model treats the average void and intervoid ligament behavior after the onset of th
Autor:
Davis L. Tonks, Paul J. Maudlin, W.R. Thissell, E. N. Harstad, M. F. Lopez, Carl P. Trujillo, D. S. Schwartz
Publikováno v:
Journal de Physique IV (Proceedings). 110:465-470
Dynamic and quasi-static failure and dynamic incipient failure experiments were performed on a half-hard 10100 Cu material using several different specimen geometries, including uniaxial stress and several notches. An additional series of uniaxial st
Autor:
D. L. Robbins, W.R. Thissell, David Alexander, A.K. Zurek, Stephen A. Sheffield, Davis L. Tonks
Publikováno v:
Le Journal de Physique IV. 10:Pr9-787
The spallation strength of single crystal copper foils 100 micrometers thick of the and orientations and of polycrystalline copper foils has been determined. Laser driving was used to launch miniature plates. Also, the spallation strength of polycrys
Publikováno v:
Le Journal de Physique IV. 10:Pr9-769
The dynamic damage resistance of two grades of very clean tantalum is compared. The materials were loaded to incipient failure using an 80 mm gas gun equipped with soft recovery using a parallel flyer plate experimental configuration. Both loading ti
Autor:
A.K. Zurek, Davis L. Tonks, J. E. Vorthman, William W. Anderson, George T. Gray, Robert Hixson
Publikováno v:
Le Journal de Physique IV. 10:Pr9-677
Previous work done to measure spall response of U-Nb(6%) alloy showed a somewhat surprising result. In all experiments done previously no evidence for an elastic wave was observed; that is, no two wave structure was detected. In this paper we report
Publikováno v:
Metallurgical and Materials Transactions A. 31:845-851
Dynamic ductile fracture has been studied through incipient spallation experiments on two grades of tantalum. A commercially pure Ta material incipiently spalled at 252 m/s, a highly pure Ta material incipiently spalled at 246 m/s, and a highly pure
Publikováno v:
Journal of Materials Processing Technology. 60:261-267
The authors conducted a series of plate impact experiments using an 80-mm launcher to study dynamic void initiation, linkup, and spall in tantalum. The tests ranged in peak shock pressures so that the effect of peak pressure on the transition from vo
We investigate with molecular dynamics the dynamic response of Cu bicrystals with a special asymmetric grain boundary (GB), (111)//(112)〈110〉, and its dependence on the loading directions. Shock loading is applied along the GB normal either from
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::270df2972c79c6a68559643818fc7136
https://resolver.caltech.edu/CaltechAUTHORS:20120427-130530361
https://resolver.caltech.edu/CaltechAUTHORS:20120427-130530361
Publikováno v:
Physical Review B. 85
We perform molecular dynamics simulations of Cu bicrystals with two important grain boundaries (GBs), Σ3 coherent twin boundaries (CTB), and symmetric incoherent twin boundaries (SITB) under planar shock wave loading. It is revealed that the shock r