Compressive behaviour of additively manufactured periodical re-entrant tetrakaidecahedral lattices at low and high strain-rates

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378297%3A_____%2F21%3A00545381" target="_blank" >RIV/68378297:_____/21:00545381 - isvavai.cz</a>

Alternative codes found

RIV/68407700:21260/21:00351321

Result on the web

<a href="https://doi.org/10.3390/met11081196" target="_blank" >https://doi.org/10.3390/met11081196</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/met11081196" target="_blank" >10.3390/met11081196</a>

Result language

angličtina

Original language name

Compressive behaviour of additively manufactured periodical re-entrant tetrakaidecahedral lattices at low and high strain-rates

Original language description

Compressive deformation behaviour of additively manufactured lattice structures based on re-entrant tetrakaidecahedral unit-cell geometry were experimentally investigated under quasi-static and dynamic loading conditions. Specimens of four different structures formed by three-dimensional periodical assembly of selected unit-cells were produced by a laser powder bed fusion technique from a powdered austenitic stainless steel SS316L. Quasi-static compression as well as dynamic tests using split Hopkinson pressure bar (SHPB) apparatus at two strain-rates were conducted to evaluate the expected strain rate sensitivity of the fundamental mechanical response of the structures. To evaluate the experiments, particularly the displacement fields of the deforming lattices, optical observation of the specimens using a high-resolution camera (quasi-static loading) and two synchronised high-speed cameras (SHPB experiments) was employed. An in-house digital image correlation algorithm was used in order to evaluate the anticipated auxetic nature of the investigated lattices. It was found that neither of the investigated structures exhibited auxetic behaviour although strain-rate sensitivity of the stress–strain characteristics was clearly identified for the majority of structures.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20501 - Materials engineering

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2021

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Metals

ISSN

2075-4701

e-ISSN

2075-4701

Volume of the periodical

11

Issue of the periodical within the volume

8

Country of publishing house

CH - SWITZERLAND

Number of pages

16

Pages from-to

1196

UT code for WoS article

000690455000001

EID of the result in the Scopus database

2-s2.0-85111132854