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Loehnert, Stefan
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Publications (10/10 displayed)
- 2023Computational Modeling and Experimental Investigation of a Single-Fiber-Pull-Out Test with a Bio-Inspired Carbon Fiber-Matrix Interphase
- 2022Development of load-bearing shell-type trc structures – initial numerical analysis
- 2022A sharp-interface model for diffusional evolution of precipitates in visco-plastic materials.citations
- 2019Fatigue damage of high-strength concrete with basalt aggregate
- 2019Acoustic emission due to fatigue damage mechanisms in high-strength concrete with different aggregatescitations
- 20183D Dynamic Crack Propagation by the Extended Finite Element Method and a Gradient-Enhanced Damage Modelcitations
- 2017Dynamic brittle fracture by XFEM and gradient-enhanced damage
- 2016Simulation of Sheet-Bulk Metal Forming Processes with Simufact.forming using User-Subroutinescitations
- 20163d crack propagation by the extended finite element method and a gradient enhanced damage model
- 2016Non-local ductile damage formulations for sheet bulk metal forming
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document
Acoustic emission due to fatigue damage mechanisms in high-strength concrete with different aggregates
Abstract
<p>The behaviour of high-strength concrete under compressive fatigue loading was investigated within a research project of the priority programme SPP 2020. In this paper, results concerning the influence of the type of coarse aggregate on the fatigue behaviour of high-strength concrete, with focus on the acoustic emission analysis, are presented comparatively. Two high-strength concretes with basalt and granite as coarse aggregate are investigated using two stress levels S<sub>c,max</sub> = 0.85 and S<sub>c,max</sub> = 0.70. Both concretes show similar characteristics of acoustic emission signals for the higher stress level. But for the lower stress level considerable differing characteristic are identified for the granite concrete. This might be an indication for a differing fatigue damage mechanism due to the type of aggregate. The damage mechanisms observed in experiments or rather the crack propagation are simulated using XFEM. Therefore a first modelling approach is presented.</p>