7 citations · 21 across the 9 of their papers we have counts for
12 papers
GivEn -- Shape Optimization for Gas Turbines in Volatile Energy Networks
Jan Backhaus, Matthias Bolten, Onur Tanil Doganay +19
This paper describes the project GivEn that develops a novel multicriteria optimization process for gas turbine blades and vanes using modern "adjoint" shape optimization algorithm…
Effect of local anisotropy on fatigue crack initiation in a coarse grained nickel-base superalloy
Benedikt Engel, Tilmann Beck, Nadine Moch +2
In the present work, theoretical approaches, based on grain orientation dependent Young's modulus and Schmid factor are used to describe the influence of local grain orientation on…
Adjoint Method to Calculate Shape Gradients of Failure Probabilaties for Turbomachinery Components
Hanno Gottschalk, Mohamed Saadi, Onur Tanil Doganay +2
In the optimization of turbomachinery components, shape sensitivities for fluid dynamical objective functions have been used for a long time. As peak stress is not a differential f…
Combined Notch and Size Effect Modeling in a Local Probabilistic Approach for LCF
Lucas Mäde, Sebastian Schmitz, Hanno Gottschalk +1
In recent years a local probabilistic model for low cycle fatigue (LCF) based on the statistical size effect has been developed and applied on engineering components. Here, the not…
Probabilistic LCF Risk Evaluation of a Turbine Vane by Combined Size Effect and Notch Support Modeling
Lucas Mäde, Sebastian Schmitz, Georg Rollmann +2
A probabilistic risk assessment for low cycle fatigue (LCF) based on the so-called size effect has been applied on gas-turbine design in recent years. In contrast, notch support mo…
Modeling, Minimizing and Managing the Risk of Fatigue for Mechanical Components
L. Bittner, H. Gottschalk, M. Gröger +3
Mechanical components that are exposed to cyclic mechanical loading fail at loads that are well below the ultimate tensile strength. This process is known as fatigue. The failure t…
Probabilistic Schmid factors and scatter of LCF life
H. Gottschalk, S. Schmitz, T. Seibel +3
We investigate the scatter in the cycles to crack initiation for conventionally cast specimens of the superalloy RENE 80 in total strain controlled low cycle fatigue (LCF) tests at…
Minimal failure probability for ceramic design via shape control
Matthias Bolten, Hanno Gottschalk, Sebastian Schmitz
We consider the probability of failure for components made of brittle mate- rials under one time application of a load as introduced by Weibull and Batdorf - Crosse and more recent…
Probabilistic Analysis of LCF Crack Initiation Life of a Turbine Blade under Thermomechanical Loading
Sebastian Schmitz, Georg Rollmann, Hanno Gottschalk +1
An accurate assessment for fatigue damage as a function of activation and deactivation cycles is vital for the design of many engineering parts. In this paper we extend the probabi…
A Probabilistic Model for LCF
Sebastian Schmitz, Thomas Seibel, Tilman Beck +3
Fatigue life of components or test specimens often exhibit a significant scatter. Furthermore, size effects have a non-negligible influence on fatigue life of parts with different…
Risk estimation for LCF crack initiation
Sebastian Schmitz, Georg Rollmann, Hanno Gottschalk +1
An accurate risk assessment for fatigue damage is of vital importance for the design and service of today's turbomachinery components. We present an approach for quantifying the pr…
Optimal Reliability in Design for Fatigue Life
Hanno Gottschalk, Sebastian Schmitz
The failure of a component often is the result of a degradation process that originates with the formation of a crack. Fatigue describes the crack formation in the material under c…