| Naslov: | Peridynamic modeling of fatigue in layered metal composites : doctoral dissertation |
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| Avtorji: | ID Jerenec, Filip (Avtor)
ID Gubeljak, Nenad (Mentor) Več o mentorju... 
ID Madenci, Erdogan (Komentor) |
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| Datoteke: |  DOK_Jerenec_Filip_2026.pdf (13,30 MB)
MD5: 70C15AC0C8505A7C098CA2ABECE1A0F5
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| Jezik: | Angleški jezik |
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| Vrsta gradiva: | Doktorsko delo/naloga |
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| Tipologija: | 2.08 - Doktorska disertacija |
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| Organizacija: | FS - Fakulteta za strojništvo
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| Opis: | In additive manufacturing, tooling is frequently built from laminated metal composites (LMCs) that stack dissimilar metals to shorten production times. Accurately predicting fatigue-crack growth in these unequal-strength laminates is difficult—particularly across joints where property mismatches steer crack paths. This work combines experiments and simulations to study fatigue-crack growth in an LMC formed by laser-melting AISI 316L powder onto high-strength structural steel S960. Crack growth was modeled with a linearized bond-based peridynamics (PD) formulation, with interfacial bonds tuned to the measured elastic-modulus gradient, and coupled to the Kinetic Theory of Fracture (KTF). Unlike conventional S–N–based approaches, KTF parameters were calibrated directly from measured crack-length–versus-cycles (a-N) data. Material behavior in the base metals and through the transition zone was characterized via tensile tests, hardness mapping, and nanoindentation; fatigue-crack growth data came from cyclic tests on compact-tension (CT) specimens. The model reproduced the observed differences in crack-growth rates between homogeneous and bimaterial specimens, and KTF parameter transferability across loads and geometries was confirmed for homogeneous samples. A key outcome is a practical calibration workflow for KTF within a nonlocal PD framework, enabling predictive simulation of fatigue-crack growth across multilayer metallic joints. |
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| Ključne besede: | Peridynamics, Fatigue Crack Growth, Kinetic Theory of Fracture, Layered Metal Composite, Additive Manufacturing |
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| Kraj izida: | Maribor |
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| Kraj izvedbe: | Maribor |
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| Založnik: | [F. Jerenec] |
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| Leto izida: | 2025 |
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| Št. strani: | XVI, 185 str. |
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| PID: | 20.500.12556/DKUM-95138 |
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| UDK: | 539.42:620.178.3(043.3) |
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| COBISS.SI-ID: | 266349827 |
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| Datum objave v DKUM: | 13.01.2026 |
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| Število ogledov: | 155 |
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| Število prenosov: | 43 |
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| Metapodatki: |    |
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| Področja: | KTFMB - FS
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