---
res:
  bibo_abstract:
  - <jats:p>The additive manufacturing (AM) of innovative lattice structures with
    unique mechanical properties has received widespread attention due to the capability
    of AM processes to fabricate freeform and intricate structures. The most common
    way to characterize the additively manufactured lattice structures is via the
    uniaxial compression test. However, although there are many applications for which
    lattice structures are designed for bending (e.g., sandwich panels cores and some
    medical implants), limited attention has been paid toward investigating the flexural
    behavior of metallic AM lattice structures with tunable internal architectures.
    The purpose of this study was to experimentally investigate the flexural behavior
    of AM Ti-6Al-4V lattice structures with graded density and hybrid Poisson’s ratio
    (PR). Four configurations of lattice structure beams with positive, negative,
    hybrid PR, and a novel hybrid PR with graded density were manufactured via the
    laser powder bed fusion (LPBF) AM process and tested under four-point bending.
    The manufacturability, microstructure, micro-hardness, and flexural properties
    of the lattices were evaluated. During the bending tests, different failure mechanisms
    were observed, which were highly dependent on the type of lattice geometry. The
    best response in terms of absorbed energy was obtained for the functionally graded
    hybrid PR (FGHPR) structure. Both the FGHPR and hybrid PR (HPR) structured showed
    a 78.7% and 62.9% increase in the absorbed energy, respectively, compared to the
    positive PR (PPR) structure. This highlights the great potential for FGHPR lattices
    to be used in protective devices, load-bearing medical implants, and energy-absorbing
    applications.</jats:p>@eng
  bibo_authorlist:
  - foaf_Person:
      foaf_givenName: Osama
      foaf_name: Abdelaal, Osama
      foaf_surname: Abdelaal
  - foaf_Person:
      foaf_givenName: Florian
      foaf_name: Hengsbach, Florian
      foaf_surname: Hengsbach
  - foaf_Person:
      foaf_givenName: Mirko
      foaf_name: Schaper, Mirko
      foaf_surname: Schaper
      foaf_workInfoHomepage: http://www.librecat.org/personId=43720
  - foaf_Person:
      foaf_givenName: Kay-Peter
      foaf_name: Hoyer, Kay-Peter
      foaf_surname: Hoyer
      foaf_workInfoHomepage: http://www.librecat.org/personId=48411
  bibo_doi: 10.3390/ma15124072
  bibo_issue: '12'
  bibo_volume: 15
  dct_date: 2022^xs_gYear
  dct_isPartOf:
  - http://id.crossref.org/issn/1996-1944
  dct_language: eng
  dct_publisher: MDPI AG@
  dct_subject:
  - General Materials Science
  dct_title: LPBF Manufactured Functionally Graded Lattice Structures Obtained by
    Graded Density and Hybrid Poisson’s Ratio@
...