AIRBAGS IN AUTOMOBILES

AIRBAGS IN AUTOMOBILES

ABSTRACT  
                  
Air bags are designed to keep occupants head, neck, and chest from slamming into the dash, steering wheel, or windshield in a front-end crash in a fraction of second. Air bags are fabric bags that are filled quickly with a gas to provide supplement protection for vehicle passengers during some collisions. Typically air bags are designed to deploy in crashes that are equivalent to a vehicle crashing into a solid wall at 8 to 14 miles per hour. Air bags are most effective in protecting vehicle occupants who are properly belted. One or more sensors detect intensity and direction of vehicle deceleration during a collision. The sensor sends an electric signal to start a chemical reaction that inflates the air bag with harmless nitrogen gas. Air bags have vents, so they deflate immediately after cushioning you. If there is sufficient change in velocity in the direction of protection (frontal or lateral), appropriate air bags are deployed. On impact, air bag system senses the crash, inflate, and then deflate all in the blink of an eye. They cannot smoother occupant, and they don’t restrict occupant’s movement. The smoke appears in a vehicle after an air bag demonstration is the nontoxic starch or talc that is used to lubricate in the air bag. Air bags are designed for frontal impact crashes, the kind of crashes which account for more than half of all passenger vehicle occupant deaths. Air bags are designed to limit head and chest injuries. But they only supplement safety belts, they do not replace them.Inflating in a fraction of a second immediately after a serious crash occurs; air bags are inflatable cushions that protect occupant from hitting the interior parts of car, or in some cases objects outside car (i.e. other vehicles or trees). There are several types of air bags. Most vehicles have air bags that deploy in frontal crashes to protect front seat occupants; these are stowed in the steering wheel (driver) and the instrument panel (front passenger). Increasing numbers of vehicles also have air bags that deploy in side impact crashes. These may protect either front or rear seat occupants, and may be stored in door trim panels, roof trim panels, or seatbacks. Head injuries are the major cause of death and serious injury in car crashes. Severe head / brain injury is irreversible - broken bones heal. While seatbelts are the primary restraint, air bags offer supplemental protection and reduce the risk of serious head injury.