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Effect of Microstructural Features and Al2O3 Doping on Aging Resistance, Mechanical Properties and Crack Propagation in 3Y-TZP Plate Ceramics for Dental Restorations: A Comprehensive Peridynamics Study | ||
| Mechanics of Advanced Composite Structures | ||
| مقالات آماده انتشار، پذیرفته شده، انتشار آنلاین از تاریخ 13 دی 1403 اصل مقاله (2.63 M) | ||
| نوع مقاله: Research Article | ||
| شناسه دیجیتال (DOI): 10.22075/macs.2025.34610.1694 | ||
| نویسندگان | ||
| Alireza Moradkhani؛ Mohammad Hoseinpour* ؛ Valiollah Panahizadeh | ||
| Department of Mechanical Engineering, Shahid Rajaee Teacher Training University, Tehran, Iran | ||
| تاریخ دریافت: 08 تیر 1403، تاریخ بازنگری: 29 آذر 1403، تاریخ پذیرش: 13 دی 1403 | ||
| چکیده | ||
| This study investigates the effects of microstructural features, nanoporosity, and micro-cracks on macro-crack propagation in 3Y-TZP plate ceramics doped with Al2O3 (0 to 0.5 wt%) for dental restoration applications, utilizing peridynamics (PD) theory for the first time. The research employs ordinary state-based PD to offer new insights into these interactions. Materials are synthesized through high-energy ball milling of ZrO2 powders at 1500 °C for 2 h. Mechanical properties, including density, average porosity diameter, Young’s modulus, Poisson’s ratio, and fracture toughness (KIC), are rigorously assessed. Results indicate that increasing Al2O3 content to 0.05 wt% enhances relative density, hardness, Young's modulus, KIC, and flexural strength to 99.5%, 15.1 GPa, 280 GPa, 9.97 MPa·m1/2, and 355 MPa, respectively, while low-temperature degradation over 800 h shows that Al2O3 doping significantly reduces aging kinetics. PD simulations demonstrate that micro-cracks substantially affect crack propagation, revealing a 15% reduction in macro-crack speeds compared to FEM results. This research enhances the understanding of dental ceramics and establishes a foundation for analyzing fractures in dental restoration ceramics using PD. | ||
| کلیدواژه‌ها | ||
| Dental ceramics؛ Peridynamics؛ Brittle fracture؛ Mechanical properties؛ Low-temperature degradation (LTD) | ||
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آمار تعداد مشاهده مقاله: 367 تعداد دریافت فایل اصل مقاله: 159 |
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