Abstract:

Based on tests and analysis, an accelerated corrosion test environment spectrum used for the critical area of fighter aircraft structures is presented, relational expression of fatigue life to accelerated corrosion time is established, and an equivalent accelerated relation between the accelerated corrosion environment spectrum and ground environment spectrum is determined by contrasting the degree of corrosion. This method has been used successfully for evaluating the service life of two kinds of fighter aircraft under corrosion conditions.

Key words: accelerated corrosion test, environment spectrum, equivalent accelerated relation