Accident in Mendoza: airbags, the lifesaver that neglect makes fatal

The tragic news of road accident in Mendoza which cost the life of a 10 month old baby after the impact of the airbag highlights the negative effects that a safety device can cause if all necessary precautions are not taken and observed before starting the vehicle.

The first thing to note is that the airbag It is today one of the essential elements to contribute to the protection of the occupants of a vehicle during an accident.

Under normal conditions they get reduce deaths by 30% and 70% of injuries occurred in road accidents.

However, not everyone is aware that its explosion, in thousandths of a second, can cause serious and even fatal injuries if you don’t travel correctly seated or without belt fastened.

How do they work?

The airbag, in addition to the bag, consists of impact sensors and inflation device; all connected to one contact center electronics that constantly monitors through multiple sensors, accelerometers and gyroscopes to determine exactly when in a collision to activate them.

These elements will be vital both to detect and to manage possible false alarms.

The impact sensors that are distributed throughout the vehicle will also be essential for activating the bags.

The main ones are located in the front and have the task of detecting the first phase of the slowdown. There are also others located on the sides in case the vehicle is equipped with side and curtain airbags.

Decision making and sending the electrical pulse to activate them takes approximately between 15 and 30 milliseconds.

In the event of an accident, a pyrotechnic gas generator ignites the propellant and the airbag, made of lightweight, tear-resistant polyamide with an initial volume of 60 to 70 liters (the driver’s airbag), inflates in about ten milliseconds.

This causes the airbag to be projected out of its housing approximately 300 km / hwhich is why it is so important to both maintain a correct posture in the seat and use a seat belt.

That way, just before the body starts running forward from the impact, all the airbags inflate.

Once the body reaches them and thanks to small valves placed in the rear, a controlled deflation takes place which allows to measure the force that the head and chest must bear during deceleration, as well as allowing the occupants to exit the vehicle without the its volume is an impediment.

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