Zobrazeno 1 - 10
of 15
pro vyhledávání: '"W. M. Trott"'
Publikováno v:
AIP Conference Proceedings.
Thermal accommodation coefficients have been determined for a variety of gas‐surface combinations using an experimental apparatus developed to measure both the pressure dependence of the conductive heat flux and the variation of gas density between
Publikováno v:
AIP Conference Proceedings.
A suite of impact experiments was conducted to assess spatial and shot‐to‐shot variability in dynamic properties of tantalum. Samples had a uniform refined ∼ 20 micron grain structure with a strong axisymmetric [111] crystallographic texture. A
Publikováno v:
AIP Conference Proceedings.
Of special promise for providing dynamic mesoscale response data is the line‐imaging VISAR, an instrument for providing spatially resolved velocity histories in dynamic experiments. We have prepared a line‐imaging VISAR system capable of spatial
Autor:
W. M. Trott, M. R. Baer
Publikováno v:
AIP Conference Proceedings.
The shock response of heterogeneous materials involves highly fluctuating states and localization effects that are produced by mesostructure. Prior studies have examined this shock behavior in randomized inert and reactive media. In this work, we inv
Autor:
W. M. Trott, M. R. Baer
Publikováno v:
AIP Conference Proceedings.
Recent simulations and experimental studies have revealed that dispersive waves are associated with impact on heterogeneous materials. The shock response includes fluctuating states and localization effects due to the interaction of multiple waves an
Publikováno v:
AIP Conference Proceedings.
Most studies in the past have focused on obtaining uni‐axial strain states in shocked materials. In this study, however, results of symmetric impact gas gun experiments on single‐crystal C‐cut sapphire are described to observe edge relief waves
Publikováno v:
AIP Conference Proceedings.
Gas gun experiments combined with line‐imaging ORVIS velocity interferometric techniques have been used to determine the loading and spall behavior of tantalum at incipient‐spall and totally‐spalled conditions. An impact velocity of ∼ 0.26 km
Autor:
B. F. Clark, Marcus D. Knudson, J. R. Asay, C. A. Hall, A. Hauer, G. Kyrala, W. M. Trott, K. J. Fleming, M. A. Bernard
Publikováno v:
AIP Conference Proceedings.
Aluminum has been investigated at multi-Mbar pressures through planar impacts generated by guns and explosives, and ablatively driven shocks from high energy lasers. Because it is well characterized, it is often used as a reference in relative Hugoni
Publikováno v:
Journal of Applied Physics. 109:093520
Plate impact experiments are a powerful tool in equation of state development, but are inherently limited by the range of impact velocities accessible to the facility. In an effort to dramatically increase the range of pressures which can be studied
Publikováno v:
31st Aerospace Sciences Meeting.
Two techniques have been developed and applied for in situ monitoring of processes involved in thermal degradation and solids deposition when several different aviation fuels are thermally stressed. Photon correlation spectroscopy is a dynamic light