Enhanced micro-vibration sensitive high-damping capacity and mechanical strength achieved in Al matrix composites reinforced with garnet-like lithium electrolyte
- 49 Downloads
A novel micro-vibration sensitive-type high-damping Al matrix composites reinforced with Li7-xLa3Zr2-xNb x O12 (LLZNO, x = 0.25) was designed and prepared using an advanced spark plasma sintering (SPS) technique. The damping capacity and mechanical properties of LLZNO/Al composites (LLZNO content: 0-40 wt.%) were found to be greatly improved by the LLZNO addition. The maximum damping capacity and the ultimate tensile strength (UTS) of LLZNO/Al composite can be respectively up to 0.033 and 101.2 MPa in the case of 20 wt.% LLZNO addition. The enhancement of damping and mechanical properties of the composites was ascribed to the intrinsic high-damping capacity and strengthening effects of hard LLZNO particulate. This investigation provides a new insight to sensitively suppress micro-vibration of payloads in the aerospace environment.
Keywordshigh-damping materials micro-vibration sensitivity LLZNO/Al metal matrix composites mechanical property
Unable to display preview. Download preview PDF.
This work was financially supported by the National Natural Science Foundation of China (Grant Nos. 51401203, 11274309, 11274305, and 11374299).
- Orszulik P R, Shan J J. Active vibration control using genetic algorithm-based system identification and positive position feedback. Smart Materials and Structures, 2012, 21: 1–10Google Scholar
- Nowick A S, Berry B S. Anelastic Relaxation in Crystalline Solids. New York/London: Academic Press, 1972Google Scholar