A set of notched  metal strips, with varying stress concentration factors, bonded to a structure.

• Each strip experiences structural strains until a crack initiates and severs the connection.
• The number of load cycles before separation is a measure of fatigue damage experienced by the structure since the Fatigue Fuse was installed.
• Fatigue Fuses recently applied to an aluminum bridge for US Army, made by a division of General Dynamics, Inc; now being evaluated at Aberdeen Proving Grounds, MD.

.