1973-02-01

Fasteners with a Memory 730900

Nitinol, a nickel-titanium alloy, exhibits the unique property of undergoing a temperature-dependent phase transformation. Associated with this phase transformation is a significant shape change that has led to the common designation of “memory material.” This shape change has been utilized to design mechanical fasteners which expand radially on transformation to produce interference fits for increased fatigue life components, give effective length reductions for high clamp-up forces, and form a rivet tail for low-cost installation. Various design concepts, manufacturing techniques, and mechanical properties are discussed.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 43% off list price.
Login to see discount.
Special Offer: With TechSelect, you decide what SAE Technical Papers you need, when you need them, and how much you want to pay.
X