Fatigue behaviour from application of a.c.

✍ Scribed by A.K.Abd El Latif

• Publisher: Elsevier Science
• Year: 1979
• Tongue: English
• Weight: 480 KB
• Volume: 12
• Category: Article
• ISSN: 0013-7944
• DOI: 10.1016/0013-7944(79)90087-0

✦ Synopsis

A~~-~~ intensity ax. is increasiagiy used in many applications: its use is coming under discussion owing to the thermal fat&me effects that are caw . This work is an iaves~gation of the effect of a.c. on the static strength and fatigue prep of mild s&e8 specimens, Pre~pp~~a~~ of a,c, to tbo specimens did not cause any appreciable change in the static properties such as yield point, ultimate sigh and amount of elastic elo~tion. Slight reduction in the total strain has been measured. Pr~app~i~tiaa of a.c. to fatigue tested specimens coaside~bly reduced the eadurance limit, an effect similar to that found in cumulative fatigue for prestressed materials. The amount of reduction increases as the intensity of applied ax.

increases.