Predicting the fatigue life of an AlSi9Cu3 porous alloy using a vector-segmentation technique for a geometric parameterisation of the macro pores

Tomažinčič, Dejan (avtor), Virk, Žiga (avtor), Kink, Peter (avtor), Jerše, Gregor (avtor), Klemenc, Jernej (avtor)

Most of the published research work related to the fatigue life of porous, high-pressure, die-cast structures is limited to a consideration of individual isolated pores. The focus of this article is on calculating the fatigue life of high-pressure, die-cast, AlSi9Cu3 parts with many clustered macro pores. The core of the presented methodology is a geometric parameterisation of the pores using a vector-segmentation technique. The input for the vector segmentation is a µ-CT scan of the porous material. After the pores are localised, they are parameterised as 3D ellipsoids with the corresponding orientations in the Euclidian space. The extracted ellipsoids together with the outer contour are then used to build a finite-element mesh of the porous structure. The stress–strain distribution is calculated using Abaqus and the fatigue life is predicted using SIMULIA fe-safe. The numerical results are compared to the experimentally determined fatigue lives to prove the applicability of the proposed approach. The outcome of this research is a usable tool for estimating the limiting quantity of a structure's porosity that still allows for the functional performance and required durability of a product.

• Jezik: Angleški jezik
• Ključne besede: AlSi9Cu3 alloy, macro porosity, vector segmentation, elliptical pore model, high-pressure die-casting
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FS - Fakulteta za strojništvo ; FRI - Fakulteta za računalništvo in informatiko
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2021
• Št. strani: 21 str.
• Številčenje: Vol. 11, iss. 1, art. 72
• PID: 20.500.12556/RUL-124299
• UDK: 519.876.5:621.74(045)
• ISSN pri članku: 2075-4701
• DOI: 10.3390/met11010072
• COBISS.SI-ID: 46599939
• Datum objave v RUL: 14.01.2021

Gradivo je del revije

• Naslov: Metals
• Skrajšan naslov: Metals
• Založnik: MDPI AG
• ISSN: 2075-4701
• COBISS.SI-ID: 15976214

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
• Začetek licenciranja: 01.01.2021

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: zlitina AlSi9Cu3, makroporoznost, vektorska segmentacija, model eliptične pore, visokotlačno litje

Projekti

• Financer: ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
• Številka projekta: P2-0182
• Naslov: Razvojna vrednotenja

• Financer: ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
• Številka projekta: P1-0292
• Naslov: Topologija, geometrija in nelinearna analiza