Brodie Helmet Test (IMAGE) Duke University Caption A Brodie helmet used by American and British forces in World War I is hit with a shock wave to test how well it protects the dummy underneath from primary blasts. Credit Joost Op 't Eynde, Duke University 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.