Improvement of Vibration Damping Capacity and Fracture Toughness in Composite Laminates By The Use of Polymeric Interleaves  

Oleh:

Gibson, Ronald F. ; Chen, Yu ; Zhao, Hui

Jenis: Article from Bulletin/Magazine
Dalam koleksi: Journal of Engineering Materials and Technology vol. 123 no. 3 (2001), page 309-314.
Topik: vibrations; improvement; vibration; damping capacity; fracture toughness; composite laminates; polymeric interleaves

Ketersediaan

Perpustakaan Pusat (Semanggi) Nomor Panggil: JJ87.2 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

Lihat Detail Induk

Isi artikel

It is shown that, under certain conditions, simultaneous improvement of vibration damping capacity and interlaminar fracture toughness in composite laminates can be achieved by using polymeric interleaves between the composite laminae. The specific case of Mode II interlaminar fracture toughness and flexural damping capacity of interleaved composite laminates is studied. Graphite / epoxy, E - glass /e poxy and E - glass / polyetherimide composite laminates with polymeric interleaves of several different thicknesses and materials were tested using both the end notch flexure (ENF) test for Mode II fracture toughness and the impulse - frequency response test for flexural damping capacity. The Mode II energy release rate GIIc for all three composites increased linearly with increasing interleaf thickness up to a critical thickness, then dropped off with further increases in thickness. The damping loss factor for all three composites increased linearly with increasing interleaf thickness up to the maximum thickness. Analytical models for predicting the influence of interleaves on GIIc and are developed, along with a hypothesis for the critical thickness effect with regard to fracture toughness.

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