Mechanical properties and cross-sectional behavior of additively manufactured high strength steel tubular sections

Yan，Ju Jie1,2; Chen，Man Tai3,5; Quach，Wai Meng1; Yan，Ming2; Young，Ben4,6

2019-11-01

10.1016/j.tws.2019.04.050

THIN-WALLED STRUCTURES   影响因子和分区

0263-8231

1879-3223

Additive manufacturing, commonly known as 3D printing, is an evolutional technology in the manufacturing industry. This technology has already been embraced by different industries, such as aerospace and biomedical engineering, and the recent advance in this technology has generated a vast of societal excitement for its future. Despite the exciting prospect of its application in civil engineering, additive manufacturing technology is still at a perceived stage for construction industry. The benefits and potential in construction industry are rarely known in the field at this stage. This paper aims to investigate the mechanical properties and structural performance of additively manufactured high strength steel tubular sections at the cross-sectional level through experimental program. The specimens were additively manufactured from H13 steel powder by selective laser melting (SLM) with three different scanning patterns, where the typical yield strength (0.2% proof stress) of the conventionally manufactured H13 steel is around 1650 MPa. The test program comprised tensile coupon tests, compression coupon tests, hardness tests, microstructural characterization as well as geometric imperfection measurements and stub column tests. The anisotropy on mechanical properties was examined through tensile coupon tests in both longitudinal and transverse directions. Compression coupon tests were also conducted to investigate the differential strength of material in tension and compression. The influences of scanning patterns on mechanical properties and structural behavior of as-printed high strength steel tubular sections stub columns were also investigated. The test results were used to assess the applicability of existing design provisions in the American Specification, Australian and New Zealand Standard as well as European Code that originally developed for conventionally produced hot-rolled and cold-formed steel tubular sections to the additively manufactured high strength steel tubular non-slender sections in this study.

Additive manufacturing Coupon tests High strength steel Stub columns Tubular sections

EI ; SCI ; CPCI-S

英语

其他

Fundo para o Desenvolvimento das Ciências e da Tecnologia[] ; Shenzhen Science and Technology Innovation Commission[ZDSYS201703031748354]

Engineering ; Mechanics

Engineering, Civil ; Engineering, Mechanical ; Mechanics

WOS:000505101100004

Elsevier Ltd

20192907217488

3D printers ; Additives ; Biomedical engineering ; Columns (structural) ; Construction industry ; Hot rolled steel ; Hot rolling ; Mechanical properties ; Selective laser melting ; Software testing ; Tubular steel structures

Construction Equipment and Methods; Surveying:405 ; Structural Members and Shapes:408.2 ; Biomedical Engineering:461.1 ; Rolling Mill Practice:535.1.2 ; Steel:545.3 ; Computer Applications:723.5 ; Printing Equipment:745.1.1 ; Chemical Agents and Basic Industrial Chemicals:803 ; Materials Science:951

ENGINEERING

2-s2.0-85069156618

Scopus

1.Department of Civil and Environmental EngineeringThe University of Macau,Macau,China
2.Department of Materials Science and Engineeringand Shenzhen Key Laboratory for Additive Manufacturing of High-performance MaterialsSouthern University of Science and Technology,Shenzhen,518055,China
3.Department of Civil EngineeringThe University of Hong Kong,Pokfulam Road,Hong Kong
4.Department of Civil and Environmental EngineeringThe Hong Kong Polytechnic University,Hong Kong
5.FormerlyDepartment of Civil and Environmental EngineeringThe University of Macau,China
6.FormerlyDepartment of Civil EngineeringThe University of Hong Kong,Pokfulam Road,Hong Kong

Yan，Ju Jie,Chen，Man Tai,Quach，Wai Meng,et al. Mechanical properties and cross-sectional behavior of additively manufactured high strength steel tubular sections[J]. THIN-WALLED STRUCTURES,2019,144.

Yan，Ju Jie,Chen，Man Tai,Quach，Wai Meng,Yan，Ming,&Young，Ben.(2019).Mechanical properties and cross-sectional behavior of additively manufactured high strength steel tubular sections.THIN-WALLED STRUCTURES,144.

Yan，Ju Jie,et al."Mechanical properties and cross-sectional behavior of additively manufactured high strength steel tubular sections".THIN-WALLED STRUCTURES 144(2019).