Fatigue crack growth for through and part-through cracks in additively manufactured Ti6Al4V

被引：14
|
作者：
Kahlin, M. [1 ,2 ]
Ansell, H. [1 ,3 ]
Moverare, J. [2 ]
机构：
[1] Saab AB, Aeronaut, SE-58188 Linkoping, Sweden
[2] Linkoping Univ, Div Engn Mat, SE-58183 Linkoping, Sweden
[3] Linkoping Univ, Div Solid Mech, SE-58183 Linkoping, Sweden
来源：
INTERNATIONAL JOURNAL OF FATIGUE | 2022年 / 155卷
基金：
欧盟地平线“2020”;
关键词：
Additive manufacturing; Ti6Al4V; Fatigue crack growth; Damage tolerance; Aerospace; STRESS-INTENSITY; FRACTURE-TOUGHNESS; HEAT-TREATMENT; RESISTANCE; BEHAVIOR;
D O I：
10.1016/j.ijfatigue.2021.106608
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Critical aerospace parts require damage tolerance analysis to determine the inspection intervals in-service. Such analyses, based on linear fracture mechanics, require that the fatigue crack growth (FCG) rate relation to the stress intensity factor range is applicable independent of geometry and stress. FCG rates for laser powder bed fusion Ti6Al4V material for conventional compact tension (CT) specimens have therefore been compared to FCG rates for specimens with a crack configuration more technically relevant from an industrial and engineering perspective. The FCG rates corresponded very well and data obtained with CT-specimens can therefore be considered relevant for general damage tolerance predictions.
引用
收藏
页数：10
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