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WhEREAS airbags save lives in car accidents, they can also damage human permanent hearing loss if it inflates. But a new simulation, how to behave ear could help, self-Designer removes the risk of such violations.
In the case of a crash, air bags are filled with an explosive fuel quickly enough to mitigate the occupants of the vehicle. But as a researcher at the Institute of Studies Michigan Ear car accident repairs, they found that rapid inflation creates a wave of high pressure can cause damage to the house.
To find out what exactly causes such damage, the U.S. military plans to put airbag aboard helicopters, as well as road transport vehicles, has developed software that reproduces the response of the ear the pressure waves. In order to ensure their accuracy, Richard Price and his colleagues in the Army Research Laboratory, Aberdeen, Maryland began by modeling, ears chat.
Although the animals are sensitive to higher frequencies than men, their reaction to noise is similar. Thus, the team anaesthetised cats exposed and interventions Security inflatable cushions, while she is unconscious. On average, the price of journals, cats of the hearing threshold values have been permanently reduced by 37 decibels 4-kilo Hertz own software, as planned. “Thus, a parallel version of the model for the human ear has been developed,” he says.
Called hearing Hazard Assessment algorithm software models such as membrane contributes, that hair-even moves on cells and consultation, from 23 sites in-house. “It is flexible, allowing the membrane, damage,” said Price. From this point, the software computes the risk of hearing loss (see figure). The model also takes account of a strange ’s ability human ear: if people see an accident, a face contracts reflex muscles of the middle ear, blocking the flow of energy internally and reducing the risk of damage.
Amazing, simulation assumes that the airbags cause less damage if a car, the windows are closed. Price says that increased pressures summit jams bones Middle ear, which protects the inner ear. “It blocks the flow of energy in this period, so that the membrane and flexible, thus damaging more and more,” he says.
The model also shows that the nature and manner of a wave rises and falls, instead of their culmination of pressure, is crucial for determining the extent of damage. The airbag perkussiven waveform may be by such factors as the nature and manner of the airbag has been folded, “said Price, and the configuration inside the cars. He posted his work on finding several entrepreneurs automobiles.
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