Assessment of structural materials containing notch-type defects: A comprehensive validation of the FAD-TCD methodology on metallic and non-metallic materials

IF 5 2区工程技术 Q1 ENGINEERING, MECHANICAL Theoretical and Applied Fracture Mechanics Pub Date : 2024-08-10 DOI:10.1016/j.tafmec.2024.104612

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Abstract

This paper provides a comprehensive description, and the subsequent validation, of a structural integrity assessment methodology of structural materials containing notch-type defects. The approach is based on the combination of Failure Assessment Diagrams (FAD) and the Theory of Critical Distances (TCD). The former provides the general assessment tool, which is exactly the same one as that used for crack-like defects, whereas the latter provides the notch effect correction required for the analysis of this type of defects. Finally, the proposed methodology is validated on a number of metallic and non-metallic structural materials, with 1,106 experimental results on different types of testing specimens, covering four structural steels, aluminium alloys 7075-T651 and 6060-T66, PVC, PMMA, PA6, fibre-reinforced PA6, 3D printed (Fused Filament Fabrication) ABS, PLA and graphene reinforced PLA, granite and limestone. The results show how the FAD-TCD methodology provides safe reasonably conservative assessments on the mentioned structural materials in the presence of notch-type defects.

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评估含有缺口型缺陷的结构材料：FAD-TCD 方法在金属和非金属材料上的全面验证

本文全面介绍了对含有缺口型缺陷的结构材料进行结构完整性评估的方法，并随后进行了验证。该方法基于失效评估图（FAD）和临界距离理论（TCD）的结合。前者提供了与裂纹类缺陷完全相同的一般评估工具，而后者提供了分析这类缺陷所需的缺口效应修正。最后，对所提出的方法进行了验证，在不同类型的测试试样上获得了 1,106 项实验结果，包括四种结构钢、铝合金 7075-T651 和 6060-T66、PVC、PMMA、PA6、纤维增强 PA6、3D 打印（熔融丝制造）ABS、PLA 和石墨烯增强 PLA、花岗岩和石灰石。结果表明，FAD-TCD 方法可对存在缺口型缺陷的上述结构材料进行安全、合理、保守的评估。

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来源期刊

Theoretical and Applied Fracture Mechanics 工程技术-工程：机械

CiteScore

8.40

自引率

18.90%

发文量

435

审稿时长

37 days

期刊介绍： Theoretical and Applied Fracture Mechanics'' aims & scopes have been re-designed to cover both the theoretical, applied, and numerical aspects associated with those cracking related phenomena taking place, at a micro-, meso-, and macroscopic level, in materials/components/structures of any kind. The journal aims to cover the cracking/mechanical behaviour of materials/components/structures in those situations involving both time-independent and time-dependent system of external forces/moments (such as, for instance, quasi-static, impulsive, impact, blasting, creep, contact, and fatigue loading). Since, under the above circumstances, the mechanical behaviour of cracked materials/components/structures is also affected by the environmental conditions, the journal would consider also those theoretical/experimental research works investigating the effect of external variables such as, for instance, the effect of corrosive environments as well as of high/low-temperature.