Janette Jaques (IMAGE) Purdue University Caption Purdue mechanical engineering doctoral student Janette Jaques attaches a sensor to a car seat headrest mounted to a hydraulic shaker. As the seat is shaken, sensors record vibration data used to validate results from a computational model that simulates the vibration. The goal is to silence rattling and squeaking noises in a car's headrest and other components, a major source of consumer dissatisfaction that automakers would like to eliminate. Credit Purdue News Service photo/David Umberger Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.