Zobrazeno 1 - 10
of 68
pro vyhledávání: '"John Nunn"'
Publikováno v:
Surface and Coatings Technology. 442:128233
Autor:
Pawel Podsiadlo, Mark Gee, Carsten Gachot, Gwidon Stachowiak, Marcin Wolski, Lawrence Kwok-Yan Li, Helena Ronkainen, Kenneth Holmberg, Anssi Laukkanen, John Nunn
Publikováno v:
Wolski, M, Podsiadlo, P, Stachowiak, G W, Holmberg, K, Laukkanen, A, Ronkainen, H, Gee, M, Nunn, J, Gachot, C & Li, L 2017, ' Multiscale characterisation of 3D surface topography of DLC coated and uncoated surfaces by directional blanket covering (DBC) method ', Wear, vol. 388-389, pp. 47-56 . https://doi.org/10.1016/j.wear.2017.03.021
Diamond-like carbon (DLC) coated surfaces exhibit anisotropic and multi-scale characteristics, i.e., their roughness change with both scale and direction. However, most currently used standard surface characterisation parameters and methods work well
Publikováno v:
Wear. :217-227
When particles of grit, oxide or other contaminants get entrained in high speed gas or steam sections of power or aero turbines they can damage components through repeated impact of particles with the surface. This erosion in turn produces additional
Publikováno v:
Wear. :1866-1876
Pin on disc wear tests on steel and alumina discs have been carried out using the NPL designed system which enables in situ monitoring of the wear and surface condition through the use of a line-scan camera microscope. In addition, the combination of
Publikováno v:
Wear. :2-14
The response of tungsten carbide hardmetals with differing binder chemistries and carbide grain sizes to a traversing diamond indenter under load has been investigated in two principal regimes; single pass traverses and a multi-pass regime intended t
Publikováno v:
International Journal of Refractory Metals and Hard Materials. 62:192-201
WC/Co hardmetals are used in many applications where wear resistance is important. However, despite recent work, the microstructural basis of wear is not completely understood. This paper describes the results of in situ scratch experiments carried o
Autor:
John Nunn
Publikováno v:
ICGA Journal. 37:214-218
Autor:
John Nunn
Publikováno v:
Physics Education. 49:303-309
This paper describes how a microphone plugged in to a normal computer can be used to record the impacts of a ball bouncing on a table. The intervals between these impacts represent the 'time of flight' of the ball. Since some energy is lost in each r
Autor:
John Nunn
Publikováno v:
Physics Education. 49:41-49
A simple inductive gravimeter constructed from a rigid plastic pipe and insulated copper wire is described. When a magnet is dropped through the vertically mounted pipe it induces small alternating voltages. These small signals are fed to the microph