This information is used by researchers to assess the likelihood that a human experiencing the same crash forces would have sustained certain types of injury to various body regions. A typical test crash lasts for 100 to 120 milliseconds. During that time, the dummy's sensors will record up to 31,000-37,200 items or data. This information is stored in a recording device located in the dummy's chest. After a crash, these data are downloaded into a computer.
Dummies are tough, but if they ever break, damaged parts can be repaired or replaced.