4. Overstress Indicator for Ultra-Light and Light Airplanes
The practice of the fuses and mechanical safeguards application in the
engineering structures and mechanisms for prevention of over regular
regimes. Different types of safeguard devices are successfully used in
the different fields of technics to prevent failure of the machines,
equipment, and systems.
Design of proposed Overstress Indicator resembles the described above
fatigue sensor. Whilst the fatigue indicator reacts to repeating loads
by the evolution of the sensor’s surface state, the overstress indicator
reacts excessive strain by its complete failure. Similar to the fatigue
sensor, the sensitivity of the indicator depends on the geometry: necked
working section has higher strain than any others indicator’s section.
Transmitting overstress indicator’s signal into the cabin doesn’t
require very much sophisticated arrangement. The onboard system of
relays can be used to supply information regarding the state of the
indicator.