The as-built out-of-circularity (OOC) deviations from a perfectly round shape and plate thickness variations of a cylinder that is subjected to external pressure are known to have a significant effect on the collapse strength and must be accurately represented in finite element analysis to obtain accurate results. Often it is necessary to interpolate measurements from a relatively coarse grid to a refined finite element model and methods that have wide general acceptance are Fourier series and bi-linear interpolation. These methods have been implemented in an Excel spreadsheet to produce node and element data that can be used directly in the Strand7 finite element package, but the methods employed are suitable for other software as well.

This report presents a new approach for biofouling prevention, in which a UV light emitting layer is applied on exposed underwater surfaces for the inhibition of settling organisms.

A systematic BHEC and fractographic study has been conducted by inspecting several hundred fastener holes in ex-service F/A-18 aircraft bulkheads, following fatigue testing. The results demonstrate that measurement of the relative phase of the eddy-current response provides additional information which can assist in discrimination between genuine cracks and mechanical damage.

An investigation into the use of the Instron ElectroPuls E3000 for the purpose of fatigue crack growth rate testing of structural materials was conducted.