L’éveil des sons

Habib, Michael C.

doi:10.3917/pls.534.0056

Cited by 1 publication

(1 citation statement)

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“…In LSs, these characteristics are preferred for bending dominated deformation. Although the relationship between blend morphology and impact resistance is well understood, 17,19,22 it is often neglected in the study of the EA of lattice structures under dynamic loading 3,6,26 . In the present study, BCC lattice structures of PLA and PLA/PCL blends were manufactured using FDM, formulated to specifically manipulate their morphology.…”

Section: Introductionmentioning

confidence: 99%

Influence of morphology on the dynamic and quasi‐static energy absorption of polylactic acid‐based lattice structures

Verbeek

Yapa

2022

J of Applied Polymer Sci

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The aim of this work was to investigate the difference between energy absorption (EA) of a lattice structure under quasi-static and dynamic loading, as influenced by morphology. Lattices were manufactured from blends of polylactic acid (PLA) and polycaprolactone (PCL), with and without a compatibilizer. Under quasistatic compression, PLA and blends with low PCL content provided the greatest EA. Above 30% PCL, a drastic decrease in EA was observed as the ductility increased. The morphology of the blends under slower loading played little role in affecting EA, as the lattice's performance was mainly dictated by the ductility of the blend. However, under dynamic loading brittle lattices provided poor EA, however, at 30% PCL, EA was significantly higher, improved further with including a compatibilizer. At 10% PCL an erratic dispersion of PCL in the PLA matrix was observed, whilst at 50% the morphology was co-continuous. A uniformly, finely dispersed droplet morphology was observed at 30% PCL. The ductility and morphology of the matrix paired with the complex loading scenario led to optimal EA under dynamic loading. The partial bonding between PCL and PLA provided clear improvement to EA, however, this effect was vastly different under quasistatic loading.

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Section: Introductionmentioning

confidence: 99%