presidentMember of ASTM, Damping Measurement Systems, Inc., Florham Park, NJ
The conventional determination of the stress relaxation properties of metals and their alloys is tedious and time-consuming. The method of predicting stress relaxation in metal strips subjected to uniform bending is based on the work per cycle required to maintain a constant strain energy level for the specimen. The change of the work per cycle with time or the number of cycles has been considered. The data obtained by damping measurements agree very well with a limited number of static stress relaxation measurements. The proposed method of predicting stress relaxation by damping measurements is simple and fast and should be particularly useful for data recorded at or close to room temperature.
Paper ID: JTE11589J