High Endurance Strain Gauges

TML have released details of their newly developed strain gauges that offer a high fatigue life at high levels of dynamic strain. The new DSFLA series are available with active gauge lengths of 3mm & 5mm, both with a gauge grid width of 2mm and with a 350Ohm resistance. The gauge factor is approximately 3.5. Standard TML foil strain gauges are specified with a fatigue life of 1,000,000 cycles at a strain level of only ±1500 microstrain, but these new gauges have been tested at TML to withstand a cyclic loading of more than 1,000,000 at 3,000 microstrain in tension, but also more than 1,000,000 cycles at 4,000 microstrain by experiments conducted at the Japan Aerospace Exploration Agency.