Abstract
This paper presents development of structural reliability design system of printed-circuit assembly in a cellular mobile phone. To realize the reliability design at the early stage of design, an efficient FEM model was proposed, and the fatigue strength database was developed by using 4-point bending test and simulation. The structural reliability design of printed-circuit assembly takes about 30 minutes on entire keys and the estimated life for key pressing operation of trial products was in good agreement with experimental results.
