In this report, the responses of an elastic wing to the two-dimensional gusts are investigated. The deformations of the two-dimensional elastic wing caused by the gust are separated into two parts, i.e. the bending mode and the torsional mode. The gusts treated here are the sinusoidal gust and the random gust. In the case of sinusoidal gust, the modes of deformation are obtained theoretically and experimentally. In the case of random gust, the power spectral functions and the frequency transfer functions are obtained experimentally. The frequency transfer functions obtained by theoretical calculations are also compared with the experimental values.
An experimental investigation was carried out on the gauge factor of wire-resistant strain gauges. It is pointed out that the effect of local reinforcement by adhesive-bonded gauges on the three-dimensional state of strain distribution in specimens, in addition to the apparent change in thickness of specimens as a whole which is usually taken into account, cannot be ignored and that the value of gauge factor specified by manufactures has to be modified depending on the material properties and thickness of specimens, type of gauges, adhesives used, and loading conditions.