A numerical and experimental analysis of the optical beam deflection system used to monitor microcantilevers subjected to simultaneous deflection and twisting such as in lateral or frictional force microscopy was performed. This study focused on two optical beam deflection orientations where in the first case the optical beam and the detector are at a right angle to the length of the cantilever...

Toward the general goal ofpreventing ankle injuries in snowboarding accidents, the E. Wang objective of this project to develop a dynamic system model of a snowboarder and Assistant Professor, assess which model parameters, particularly those attributed to the boot, most Department of Mechanical Engineering, strongly influenced ankle deflections during a forward fall. To satisfy this objective,...

Multicasting in deflection networks is more difficult than in store-and-forward networks, because of the difficulties in sending multiple copies of the same packet on several output ports. On the other hand, deflected packets stray from their optimal paths and may visit the multicast recipients “accidentally,” not necessary in the order envisioned by the sender. We compare a number of simple mu...

We describe the use of a two-wavelength beam deflection technique in the measurement of electron density and expansion velocity in a laser-produced plasma. Beam deflection measurements are made with a spatial resolution of 250 microm, temporal resolution of 25 ns, and a dynamic range of 1000. Several techniques for determining the spatial and temporal variation of the electron density from beam...

The theory for a sensitive spectroscopy based on the photothermal deflection of a laser beam is developed. We consider cw and pulsed cases of both transverse and collinear photothermal deflection spectroscopy for solids, liquids, gases, and thin films. The predictions of the theory are experimentally verified, its implications for imaging and microscopy are given, and the sources of noise are a...

The dynamic response of a structure depends on both the structure and the applied load. A pulse approximation method proposed by Youngdahl has been proved to be applicable to stable structures and it has been adopted to deal with arbitrary loading pulse in analyses. However, for the structures possessing unstable loadedisplacement properties, the applicability of pulse approximation method need...

It is well known that beam is one of the basic structures in architecture. It is greatly used in the designing of bridge and construction. Recently, scientists bring forward the theory of combined beams. That is to say, we can bind up some stratified structure copings into one global combined beam with rock bolts. The deformations of an elastic beam in equilibrium state, whose two ends are simp...

Current numerical methods have slow dynamic visualisation capability, which is usually separate from the calculation phase. This paper investigates whether an analogue virtual reality (VR) model of a structure can integrate calculation and visual representation. The paper shows how the user can interact with a VR analogue model of a cantilever beam, move a concentrated load along the length of ...

Using Penrose diagrams the causal structure of the static spherically symmetric vacuum solution to conformal (Weyl) gravity is investigated. A striking aspect of the solution is an unexpected physical singularity at r = 0 caused by a linear term in the metric. We explain how to calculate the deflection of light in coordinates where the metric is manifestly conformal to flat i.e. in coordinates ...