Zobrazeno 1 - 10
of 20
pro vyhledávání: '"R.F. Holloway"'
Autor:
Ed C Oliver, R.F. Holloway, Philip J. Withers, S. J. Covey-Crump, David A. Hall, J. D. S. Evans, T. Mori
Publikováno v:
Acta Materialia. 58:6584-6591
The hydrostatic pressure-induced martensitic transformation from the ferroelectric rhombohedral to antiferroelectric orthorhombic phase in PZT 95/5 ceramics has been studied using neutron diffraction. The transition to the orthorhombic phase initiate
Publikováno v:
Geology Today. 26:134-139
The creeping Mam Tor landslide (North Derbyshire, UK) is sliding slowly downhill at up to 0.5 m per year. Annual measurements using conventional surveying techniques have shown that creep is exacerbated by periods of heavy rainfall, but to establish
Autor:
Mark R. Daymond, I. C. Stretton, S. J. Covey-Crump, Kevin S. Knight, R.F. Holloway, Paul F. Schofield
Publikováno v:
Physica B: Condensed Matter. :938-941
Conventional deformation experiments are generally restricted to the measurement of whole sample properties, but performing such experiments in situ within a neutron beamline makes it possible to determine how this deformation is accommodated at the
Publikováno v:
Journal of Applied Crystallography. 39:222-229
A simple pressure vessel suitable for use at room temperature has been developed which allows neutron diffraction data to be collected from cylindrical samples of up to 10 mm diameter, at confining pressures of up to 160 MPa, whilst they are also bei
Autor:
Kevin S. Knight, Mark R. Daymond, I. C. Stretton, Paul F. Schofield, R.F. Holloway, S. J. Covey-Crump
Publikováno v:
Mineralogical Magazine. 67:967-987
Conventional experiments designed to investigate the mechanical properties of polycrystalline geological materials are generally restricted to measurements of whole-rock properties. However, when comparing the measurements with theoretical models, it
Publikováno v:
Journal of the Geological Society. 160:735-744
The spectacular Mam Tor landslip, near Castleton, Derbyshire, formed over 3000 years ago on an oversteepened slope left after the last ice age. A section of the Namurian Edale mudstones and overlying Mam Tor sandstones has collapsed, leaving an 80 m
Publikováno v:
International Journal of Rock Mechanics and Mining Sciences. 40:747-761
To investigate borehole failure under hydrostatic stress in sandstone of varying porosity, experiments were conducted on three sandstone varieties with 2–5 mm bores. Tennessee, Darley Dale, and Penrith sandstone-types were selected to represent mos
Publikováno v:
Geology Today. 19:59-64
The Mam Tor area (5 km west of Castleton, Derbyshire) is a perennial favourite for field visits by school and university parties and enthusiastic amateurs. As well as displaying the local stratigraphic relationships between the lower Carboniferous li
Publikováno v:
2007 IEEE Radar Conference.
This paper presents a 94 GHz (W-band) FMCW radar system under development for airborne situational awareness. Military CONOPS require pilots of both fixed and rotary winged aircraft to land at remote sites in degraded visibility or brownout condition
Autor:
Philip G. Meredith, Barry Kean Atkinson, D. MacDonald, S. M. Dennis, N.J. Price, R.F. Holloway
Publikováno v:
Open-File Report.
The micromechanisms of tensile fracture are reviewed, with particular emphasis on the influence of chemical effects on fracture controlled by pre-existing cracks (stress corrosion). A fracture mechanism map for quartz is constructed using a combinati