Erratum for “Lifting Lug with Pinhole Bushing” by David Duerr

System Analysis of a Lug by Moire Fringe Method

A set of experimental procedures, based upon the moire fringe method has been used for measuring elasto-plastic strains in a lug. Results of experiments conducted on aluminium specimens have been presented and discussed. It is found that moire fringe method gives reliable measurement of strain in lug. INTRODUCTION In aircraft, lug type joints are frequently used in connecting structural element...

Imaging with two spiral diffracting elements intermediated by a pinhole.

A pseudoscopic (inverted depth) image made with spiral diffracting elements intermediated by a pinhole is explained by its symmetry properties. The whole process is made under common white light illumination and allows the projection of images. The analysis of this projection demonstrates that the images of two objects pointing away longitudinally have the main features of standard pseudoscopic...

Pinhole Mask Sensor a Pinhole Mask Sensor

Figure 1 shows an example of a light field camera with a pinhole mask in front of the sensor. If we look at the sensor in 1D and assume an total x-resolution of 900 pixels and a Θ resolution of 9, the local x resolution is 100. The disadvantages are therefore a loss in resolution and a loss of light, as most of the light gets blocked by the mask. Therefore, while this model is very clean on a t...

A Multi-Agent System for Bushing Condition Monitoring

The problem of automatic fault diagnosis has been an ongoing research in power system. This paper proposes a design of a multi-agent system for bushing condition monitoring system. The agents collect dissolved gases measurements from gas chromatography, analyze the measurements and perform fault diagnosis. The interpretation agents are encapsulated with artificial neural networks so as to enabl...

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