A Study on the Fatigue Life of the Laser Additive Manufactured Metallic Material

LIAO Yu; ZHONG Guiyong; SHU Maosheng; BAI Lin; JIANG Xulai

doi:10.21656/1000-0887.430319

Volume 44 Issue 2

Feb. 2023

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Article Navigation > Applied Mathematics and Mechanics > 2023 > 44(2): 201-208

LIAO Yu, ZHONG Guiyong, SHU Maosheng, BAI Lin, JIANG Xulai. A Study on the Fatigue Life of the Laser Additive Manufactured Metallic Material[J]. Applied Mathematics and Mechanics, 2023, 44(2): 201-208. doi: 10.21656/1000-0887.430319

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A Study on the Fatigue Life of the Laser Additive Manufactured Metallic Material

doi: 10.21656/1000-0887.430319

AVIC Chengdu Aircraft Design & Research Institute, Chengdu 610091, P.R.China

Received Date: 2022-10-11
Rev Recd Date: 2023-01-13

Available Online: 2023-02-04

Publish Date: 2023-02-15

Abstract

Abstract

As more and more structural parts of military aircraft are formed with the additive manufacturing (AM) technology, it is very urgent to study the fatigue characteristics of the additive manufactured materials and structures. To investigate the fatigue life characteristics of the aluminum alloy and the titanium alloy manufactured with the selective laser melting (SLM) technology, a series of specimens with various structural details were designed and tested under the constant amplitude spectrum and the random spectrum. The basic reliable life of each test specimen was statistically analyzed and the reliable safety life curve was obtained. The fractography analysis shows that, more defects and mixed failure characteristics exist in the aluminum alloy specimens, while the fatigue scatter of the titanium alloy specimens is larger than that of forge pieces.
- additive manufacturing,
- fatigue characteristics,
- structural details,
- titanium alloy,
- reliable fatigue life

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References(19)

References

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