during the last decades a new class of materials named fiber/metal laminates (fmls) was introduced. it is a hybrid composite consisting of alternating thin layers of metal sheets and fiber-reinforced composite material. fmls have both low weight and good mechanical properties. in this study, the impact behavior of this attractive material is investigated. the effect of fiber angle, stacking seq...

Topographical measurements of surfaces yield a lot of data which are usually presented by tables of height coordinates or by contour maps. Here a method is described to characterize the surface geometry by just a few parameters which quantify the functional properties: sphericity, twist and waviness. Examples of applications are given from the field of surface plate measurement. Some measuremen...

We analyze the growth stability of an epitaxial strained film on a flat substrate by the elastic Green’s function force monopole approach. We calculate and compare the strain energies and growth instability of three different forms of surface undulations: sinusoidal waviness, surface faceting and island formation. In general, the instability occurs beyond a critical length scale, in agreement w...

Wilson loops which are small deviations from straight, infinite lines, called wavy lines, are considered in the context of the AdS/CFT correspondence. A single wavy line and the connected correlation function of a straight and wavy line are considered. It is argued that, to leading order in “waviness”, the functional form of the loop is universal and the coefficient, which is a function of the ...

The x-ray transmission property of capillary tubes is the basis of capillary x-ray optic designs. Based on the theory of x-ray transmission through capillaries, a detailed Monte Carlo method is suggested in this paper. An associated corresponding computer program is worked out. It can deal with the surface roughness/waviness effects of x-ray reflection on non-perfect surface. For a given model,...