PMID- 30501050
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20201001
IS  - 1996-1944 (Print)
IS  - 1996-1944 (Electronic)
IS  - 1996-1944 (Linking)
VI  - 11
IP  - 12
DP  - 2018 Nov 29
TI  - Improved Mechanical Properties and Energy Absorption of BCC Lattice Structures 
      with Triply Periodic Minimal Surfaces Fabricated by SLM.
LID - 10.3390/ma11122411 [doi]
LID - 2411
AB  - The triply periodic minimal surface (TPMS) method is a novel approach for lattice 
      design in a range of fields, such as impact protection and structural 
      lightweighting. In this paper, we used the TPMS formula to rapidly and accurately 
      generate the most common lattice structure, named the body centered cubic (BCC) 
      structure, with certain volume fractions. TPMS-based and computer aided design 
      (CAD) based BCC lattice structures with volume fractions in the range of 10(-)30% 
      were fabricated by selective laser melting (SLM) technology with Ti(-)6Al(-)4V and 
      subjected to compressive tests. The results demonstrated that local geometric 
      features changed the volume and stress distributions, revealing that the 
      TPMS-based samples were superior to the CAD-based ones, with elastic modulus, 
      yield strength and compression strength increasing in the ranges of 18.9(-)42.2%, 
      19.2(-)29.5%, and 2(-)36.6%, respectively. The failure mechanism of the TPMS-based 
      samples with a high volume fraction changed to brittle failure observed by 
      scanning electron microscope (SEM), as their struts were more affected by the 
      axial force and fractured on struts. It was also found that the TPMS-based 
      samples have a favorable capacity to absorb energy, particularly with a 30% 
      volume fraction, the energy absorbed up to 50% strain was approximately three 
      times higher than that of the CAD-based sample with an equal volume fraction. 
      Furthermore, the theoretic Gibson(-)Ashby mode was established in order to predict 
      and design the mechanical properties of the lattice structures. In summary, these 
      results can be used to rapidly create BCC lattice structures with superior 
      compressive properties for engineering applications.
FAU - Zhao, Miao
AU  - Zhao M
AD  - State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 
      400044, China. zhaomiaocqu@gmail.com.
FAU - Liu, Fei
AU  - Liu F
AUID- ORCID: 0000-0001-8094-9758
AD  - State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 
      400044, China. liufei29@cqu.edu.cn.
FAU - Fu, Guang
AU  - Fu G
AD  - State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 
      400044, China. guangfu@cqu.edu.cn.
FAU - Zhang, David Z
AU  - Zhang DZ
AD  - State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 
      400044, China. zhangzw@cqu.edu.cn.
AD  - College of Engineering, Mathematics and Physical Sciences, University of Exeter, 
      North Park Road, Exeter EX4 4QF, UK. zhangzw@cqu.edu.cn.
FAU - Zhang, Tao
AU  - Zhang T
AD  - State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 
      400044, China. zghzt@hotmail.com.
FAU - Zhou, Hailun
AU  - Zhou H
AD  - State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 
      400044, China. Allenzhou@cqu.edu.cn.
LA  - eng
GR  - 2015AA042501/The National High Technology Research and Development Program of 
      China/
PT  - Journal Article
DEP - 20181129
PL  - Switzerland
TA  - Materials (Basel)
JT  - Materials (Basel, Switzerland)
JID - 101555929
PMC - PMC6317040
OTO - NOTNLM
OT  - energy absorbing
OT  - lattice structures
OT  - mechanical properties
OT  - selective laser melting
OT  - triply periodic minimal surface
COIS- The authors declare no conflict of interest.
EDAT- 2018/12/07 06:00
MHDA- 2018/12/07 06:01
PMCR- 2018/11/29
CRDT- 2018/12/02 06:00
PHST- 2018/11/12 00:00 [received]
PHST- 2018/11/23 00:00 [revised]
PHST- 2018/11/26 00:00 [accepted]
PHST- 2018/12/02 06:00 [entrez]
PHST- 2018/12/07 06:00 [pubmed]
PHST- 2018/12/07 06:01 [medline]
PHST- 2018/11/29 00:00 [pmc-release]
AID - ma11122411 [pii]
AID - materials-11-02411 [pii]
AID - 10.3390/ma11122411 [doi]
PST - epublish
SO  - Materials (Basel). 2018 Nov 29;11(12):2411. doi: 10.3390/ma11122411.