Frequency scanning testing of armour wire provides data for improved fatigue design.

The article reports that The Welding Institute (TWI) Industrial Member company Exxon Mobil Corp. approached TWI in Cambridge, England to develop a testing programme to determine the effect of loading frequency on fatigue crack growth rate (FCGR) of armour wire in corrosive environment. The work has produced control data that will allow enhanced product design for offshore applications. TWI developed a frequency scanning test to investigate the effects.