A Review of Manganin Gauge Technology for Measurements in the Gigapascal Range
Abstract
There is a requirement at MRL, particularly from the Explosives Division, to establish a capability to measure dynamic stresses in the 1 to 40 GPa range to study the behavior of shock loaded solids. One such example involves the study of shock induced conduction of polymers. Shock induced conduction is the property where materials that are normally insulators become conductive when subjected to a shock wave. The transition from insulator to conductor takes place in a few nanoseconds and involves stresses in the GPa range. This property has been utilized at MRL for a rapidly actuating electrical switch for slapper detonators. The switch consists of a microtransmission stripline with the polymer polyimide sandwiched between two copper strips. By impacting an explosively driven flyer plate onto the microtransmission stripline the polyimide becomes conductive closing a circuit. In this case the measurement of the stress-time history of the polyimide would provide an understanding of shock wave propagation and would enable a better switch design.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1990
- Accession Number
- ADA227927
Entities
People
- G. Yiannakopoulos
Organizations
- Defence Science and Technology Group