| Title: | Peridynamic modeling of fatigue in layered metal composites : doctoral dissertation |
|---|
| Authors: | ID Jerenec, Filip (Author)
ID Gubeljak, Nenad (Mentor) More about this mentor... 
ID Madenci, Erdogan (Comentor) |
|---|
| Files: |  DOK_Jerenec_Filip_2026.pdf (13,30 MB)
MD5: 70C15AC0C8505A7C098CA2ABECE1A0F5
|
|---|
| Language: | English |
|---|
| Work type: | Doctoral dissertation |
|---|
| Typology: | 2.08 - Doctoral Dissertation |
|---|
| Organization: | FS - Faculty of Mechanical Engineering
|
|---|
| Abstract: | 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. |
|---|
| Keywords: | Peridynamics, Fatigue Crack Growth, Kinetic Theory of Fracture, Layered Metal Composite, Additive Manufacturing |
|---|
| Place of publishing: | Maribor |
|---|
| Place of performance: | Maribor |
|---|
| Publisher: | [F. Jerenec] |
|---|
| Year of publishing: | 2025 |
|---|
| Number of pages: | XVI, 185 str. |
|---|
| PID: | 20.500.12556/DKUM-95138 |
|---|
| UDC: | 539.42:620.178.3(043.3) |
|---|
| COBISS.SI-ID: | 266349827 |
|---|
| Publication date in DKUM: | 13.01.2026 |
|---|
| Views: | 154 |
|---|
| Downloads: | 43 |
|---|
| Metadata: |    |
|---|
| Categories: | KTFMB - FS
|
|---|
|
:
|
Copy citation |
|---|
| | | | Average score: | (0 votes) |
|---|
| Your score: | Voting is allowed only for logged in users. |
|---|
| Share: |  |
|---|
Hover the mouse pointer over a document title to show the abstract or click
on the title to get all document metadata. |
