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Laser powder bed
fusion of multilayer corrugated sandwich structures:
Mechanical properties and failure mechanisms under bending
loadings
Xinqiang Lan, Siqi Yang, Liang Meng, Jingxiang Lu, Shuwen Mei and Zemin Wang |
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Vol. 18 (2023), No. 5, 711–726
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Abstract |
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The single and multilayer corrugated sandwich structures (number of layers is 1–4) are designed and manufactured by laser powder bed fusion (LPBF). The mechanical properties and failure mechanisms of the as-fabricated structures subjected to quasistatic three-point bending were investigated theoretically, experimentally and numerically. Results demonstrate that structures fabricated by LPBF with the optimal processing parameters show good printability and high quality. The failure mode transitions from overall structural failure to local damage as the number of layers increases. As the number of layers increased from 2 to 4, the bending load of specimens increased by 70.2%, 17.4%, and 10.9%, and the effective deflection increased by 54.3%, 9.7%, and 2.4%, respectively. The multilayer corrugated sandwich structures (MCSS) show favorable bending performance with lower structural density, and the appropriate increase in the number of layers is beneficial to improve the structural performance. These findings could facilitate the applications of MCSS in design of parts for bending beams or plates. |
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Keywords
multilayer corrugated sandwich structure, laser powder bed
fusion, bending behavior, failure mechanisms, numerical
simulation
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Milestones
Received: 2 April 2023
Revised: 20 June 2023
Accepted: 26 June 2023
Published: 25 October 2023
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Authors |
| Xinqiang Lan | |
| Wuhan National Laboratory for
Optoelectronics Huazhong University of Science and Technology Wuhan China |
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| Siqi Yang | |
| Wuhan National Laboratory for
Optoelectronics Huazhong University of Science and Technology Wuhan China |
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| Liang Meng | |
| Wuhan National Laboratory for
Optoelectronics Huazhong University of Science and Technology Wuhan China |
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| Jingxiang Lu | |
| Wuhan National Laboratory for
Optoelectronics Huazhong University of Science and Technology Wuhan China |
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| Shuwen Mei | |
| Nantong Jinyuan Intelligence
Manufacturing Technology Co., Ltd. Nantong China |
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| Zemin Wang | |
| Wuhan National Laboratory for
Optoelectronics Huazhong University of Science and Technology Wuhan China |
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| © 2023 MSP (Mathematical Sciences Publishers). |
