Skip to Main Content


Music wire springs used in a printer return mechanism failed near the bend in the hook portion of the spring during qualification testing. Samples were examined in a scanning electron microscope equipped with an energy-dispersive x-ray microprobe. Fatigue fractures originated at rub marks on the inside edge of the spring. An investigation of loads encountered in service indicated that the springs had been loaded to a large fraction of the yield strength. Redesign of the spring mechanism was recommended.

You do not currently have access to this chapter.
Don't already have an account? Register

Michael Neff, Analysis of Music Wire Springs Used in a Printer Mechanism, Handbook of Case Histories in Failure Analysis, Vol 2, Edited By Khlefa A. Esaklul, ASM International, 1993, p 451–454,

Download citation file:

Close Modal

or Create an Account

Close Modal
Close Modal