Significant Shear Failure Difference among Additively Manufactured Polymers Using Different Techniques.

Luoyu Roy Xu, Qinglin Wang, Yinxu Ni, Gonghe Zhang, Fenghua Liu, Xiaodong Zheng, Yang Liu

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Article in Polymers, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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7 authors.

Luoyu Roy XuSchool of Mechanical Engineering and Mechanics, Ningbo University, Ningbo 315211, China.ORCID 0000-0002-9502-7462

Qinglin WangSchool of Mechanical Engineering and Mechanics, Ningbo University, Ningbo 315211, China.

Yinxu NiZhejiang Key Laboratory of Additive Manufacturing Materials, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315211, China.

Gonghe ZhangSchool of Mechanical Engineering and Mechanics, Ningbo University, Ningbo 315211, China.

Fenghua LiuZhejiang Key Laboratory of Additive Manufacturing Materials, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315211, China.

Xiaodong ZhengSchool of Mechanical Engineering and Mechanics, Ningbo University, Ningbo 315211, China.

Yang LiuSchool of Mechanical Engineering and Mechanics, Ningbo University, Ningbo 315211, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Because additively manufactured materials are increasingly being used in load-bearing structures, strength research has become critical. Surprisingly, numerous studies have reported the tensile strength measurements, but only a few studies have presented meaningful results for the shear strength measurements of additively manufactured polymers. Hence, this paper proposes a combined experimental and numerical investigation of a new interlayer shear strength measurement approach, and it targeted the applications of the same polyamide (PA12) specimens made with fused deposition modeling (FDM) and selective laser sintering (SLS). A necking-shaped shear specimen was developed to measure the pure shear strengths with the aid of a three-dimensional (3D) finite element analysis. The results showed that the specimens made with FDM and SLS exhibited totally different shear failure behaviors. The ultimate shear strength of the FDM-PA specimens had more than a 32% increase over that of the SLS-PA specimens. An interface mechanics assumption was employed to explore the different shear failure mechanisms with the support of a fractography analysis.

Indexed as

fused deposition modelingpolymerselective laser sinteringshear strength

Identifiers

PMID36235976

DOI10.3390/polym14194028

PMCPMC9572911

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