Critical Review of the Generalised Frost-Dugdale Approach to Crack Growth in F/A-18 Hornet Structural Materials
DEFENCE SCIENCE AND TECHNOLOGY ORGANISATION VICTORIA (AUSTRALIA) AIR VEHICLES DIV
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The FA-18 Hornet is one of the ADFs premier defence assets. It utilises a highly optimised metallic structure to assist in achieving its performance objectives. Thus the structure particularly the fracture critical wing attachment bulkheads or the centre barrel is uniformly highly stressed and thus susceptible to fatigue cracking. In order to help assess the fatigue critical regions of the aircraft it is essential that the tools used to predictassess fatigue crack growth are consistent with the known fatigue behaviour of the FA-18 materials. This report provides a critical review of the current state of knowledge with respect to the use of the Generalised Frost-Dugdale model for assessing fatigue crack growth in FA-18 structural metallic materials and evaluates the need for further research in this area.
- Attack and Fighter Aircraft
- Terminal Flight Facilities