Abstract: A high-speed imaging system for capturing images of flow created by initiation of energetic material includes a lens collector disposed in a protective shield. The protective shield helps protect the lens collector from damage due to the blast event. The lens connector is connected to an incoherent optical fiber bundle made of a bundle of coherent fiber bundles. The incoherent optical fiber bundle creates scrambled images that are relayed to a high-speed camera. A computer connected to the high-speed camera unscrambles the scrambled images to reproduce the images of the flow.

Abstract: A thermocouple (TC) protection gauge may guard TCs from flying debris and fragments in an explosive environment or demanding commercial environments. The gauge may contain multiple co-located TCs. By using the protection gauge, the survivability of the TCs is significantly increased and allows for a longer time frame of data collection. Temperature data is acquired from multiple TCs that are experiencing approximately the same gas temperature and gas velocity. The temperature data may be used to reconstruct the real gas temperature of a dynamic event. Each of the TCs has a different diameter and therefore has a different time resolved temperature trace. The individual temperature traces may be used to extrapolate the real gas temperature using, for example, a reconstruction algorithm.