Length scale parameters to estimate fatigue lifetime of 3D-printed titanium alloy Ti6Al4V containing notches in the as-manufactured condition

被引：15

作者：

Razavi, Nima ^{[1
]}

Askes, H. ^{[2
]}

Berto, F. ^{[1
]}

Susmel, L. ^{[3
]}

机构：

[1] Norwegian Univ Sci & Technol, NO-7491 Trondheim, Norway

[2] Univ Twente, Fac Engn Technol, Twente, Netherlands

[3] Univ Sheffield, Dept Civil & Struct Engn, Mappin St, Sheffield S1 3JD, England

来源：

INTERNATIONAL JOURNAL OF FATIGUE | 2023年 / 167卷

关键词：

Additive manufacturing; Notch; Critical distance; Gradient elasticity; Averaged strain energy density; STRESS INTENSITY APPROACH; CRITICAL DISTANCES; WELDED-JOINTS; STRAIN-ENERGY; NONLOCAL ELASTICITY; GRADIENT ELASTICITY; STRENGTH; COMPONENTS; BEHAVIOR; RESISTANCE;

D O I：

10.1016/j.ijfatigue.2022.107348

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The accuracy of the Theory of Critical Distances, Gradient Elasticity and the Averaged Strain Energy Density criterion in estimating fatigue lifetime of notched additively manufactured Ti6Al4V is assessed against numerous experimental results generated under load ratios equal to -1 and 0.1. The 3D-printed Ti-alloy under investigation was tested by keeping the notches in the as-manufactured condition. The common feature of the considered design approaches is that they all make use of a material length scale. The validation exercise based on the generated experimental results demonstrates that the length scale concept can be extended successfully also to the fatigue assessment of notched 3D-printed metallic components.

引用

页数：12

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