Multi-Particle Impact Damping Design Methodology for Extreme Environments

Period of Performance: 04/30/1998 - 04/30/2000


Phase 2 SBIR

Recipient Firm

CSA Engineering, Inc.
2565 Leghorn Street
Mountain View, CA 94043
Principal Investigator

Research Topics


CSA Engineering, Inc. and its team partners, the University of Dayton Research Institute and Pratt and Whitney, propose to develop and validate a design methodology for using Multi-Particle Impact Damping (MPID) in high temperature applications. Phase I research has indicated that multi-particle impact damping (also referred to as "particle damping") is a viable option for extreme temperature applications. To date, however, the lack of a robust design methodology that includes both MPID material characterization testing and an analytical method based on test has limited MPID usage to "trial-and-error" applications. The innovation of this proposed effort is to continue the focused research started under Phase I to develop a complete design methodology for MPID. This effort will finalize a MPID material characterization test procedure developed under Phase I. The test procedure will be used to increase the understanding of the damping mechanisms and obtain MPID damping properties. Further, an analytical method will be completed that uses the material characterization data to design damping into structural systems using MPID. The MPID design methodology will be used to perform damping system design for a Pratt & Whitney hot engine component to be tested in Phase II.