Helen Bartsch
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View article: Discovery of fatigue strength models via feature engineering and automated eXplainable machine learning applied to the welded transverse stiffener
Discovery of fatigue strength models via feature engineering and automated eXplainable machine learning applied to the welded transverse stiffener Open
This research introduces a unified approach combining Automated Machine Learning (AutoML) with Explainable Artificial Intelligence (XAI) to predict fatigue strength in welded transverse stiffener details. It integrates expert-driven featur…
View article: Prediction of Micro-Cracks in Steel Structures Subjected to Fatigue by Means of Acoustic Emission
Prediction of Micro-Cracks in Steel Structures Subjected to Fatigue by Means of Acoustic Emission Open
This paper presents the development of a monitoring system using acoustic emission (AE) analysis for the prediction of micro- and initial cracks in fatigue-stressed steel structures such as bridges, cranes, offshore, or industrial construc…
View article: Reuse of reclaimed steel components in construction: A systematic review of potential, challenges and future directions
Reuse of reclaimed steel components in construction: A systematic review of potential, challenges and future directions Open
View article: Structural behaviour of HSS hollow section K‐joints – Experimental investigations and advanced numerical modelling using damage mechanics
Structural behaviour of HSS hollow section K‐joints – Experimental investigations and advanced numerical modelling using damage mechanics Open
Welded hollow section trusses are commonly used in structures such as pedestrian bridges and crane girders. High‐strength steels (HSS) enable increased load capacity and reduced weight, but their limited ductility restricts plastic stress …
View article: Data-driven investigations on the fatigue resistance of joints welded with low-transformation-temperature effects
Data-driven investigations on the fatigue resistance of joints welded with low-transformation-temperature effects Open
View article: Zukunftsfähiger Stahlbau – Gamechanger zugunsten der Nachhaltigkeit
Zukunftsfähiger Stahlbau – Gamechanger zugunsten der Nachhaltigkeit Open
Abstrakt Um den Baubedarf infolge alternder Infrastruktur, Bevölkerungswachstum und Urbanisierung zu decken, bedarf es umfangreicher Bautätigkeiten. Gleichzeitig erfordern die zwingend notwendige Eindämmung der Klimakrise und der verantwor…
View article: Influence of the temperature‐dependent toughness on the structural resistance of high‐strength steels
Influence of the temperature‐dependent toughness on the structural resistance of high‐strength steels Open
Structural steels with high strengths enable slender and material saving, thus particularly sustainable construction. According to EN 1993‐1‐12, design of steel structures is already possible up to steel grade S700. After revision, now the…
View article: Bewertung wesentlicher Einflussgrößen auf die Ermüdungsfestigkeit typischer Kerbdetails – Bemessungsempfehlungen
Bewertung wesentlicher Einflussgrößen auf die Ermüdungsfestigkeit typischer Kerbdetails – Bemessungsempfehlungen Open
Abstrakt Bei der Bemessung ermüdungsbeanspruchter Stahlkonstruktionen ist eine möglichst zutreffende Einschätzung der Ermüdungsfestigkeit geschweißter Details von großer Bedeutung. Das Forschungsprojekt EVOKERB setzte sich intensiv mit der…
View article: Fatigue strength of additively manufactured hot-dip galvanized steel coated with a Zn–5Al alloy
Fatigue strength of additively manufactured hot-dip galvanized steel coated with a Zn–5Al alloy Open
This study aims to investigate the fatigue resistance of additively manufactured steel plates with galvanized surfaces using a Zn–5Al alloy. In addition to fatigue tests, this study examined the effect of hot-dip galvanization (HDG) on fat…
View article: Fatigue class combination model to quantify the influence of multiple weld imperfections on fatigue strength
Fatigue class combination model to quantify the influence of multiple weld imperfections on fatigue strength Open
View article: The influence of external weld imperfection size on the load-bearing capacity of butt-welded joints
The influence of external weld imperfection size on the load-bearing capacity of butt-welded joints Open
View article: Establishing European design rules for re‐used steel components
Establishing European design rules for re‐used steel components Open
In the construction industry, re‐use of components has the potential to play a crucial role in reducing CO 2 emissions. The direct re‐use of components is particularly suitable for steel structures because they have a high degree of prefab…
View article: Fitting of Mechanical Material Behaviour of Structural Steel for Numerical Modeling – Development of an Optimization Algorithm
Fitting of Mechanical Material Behaviour of Structural Steel for Numerical Modeling – Development of an Optimization Algorithm Open
View article: Fitting of Mechanical Material Behaviour of Structural Steel for Numerical Modeling
Fitting of Mechanical Material Behaviour of Structural Steel for Numerical Modeling Open
View article: Vorschau: Stahlbau 2/2024
Vorschau: Stahlbau 2/2024 Open
several research projects have developed systems which allow for the design of demountable composite structural elements.A pilot project, 'la Petite Maison', has been designed and built next to the University of Luxembourg in Belval, Luxem…
View article: Developing Artificial Neural Networks to Estimate the Fatigue Strength of Structural Steel Details Using the New European Database
Developing Artificial Neural Networks to Estimate the Fatigue Strength of Structural Steel Details Using the New European Database Open
View article: Fatigue Class Combination Model to Quantify the Influence of Multiple Weld Imperfections on Fatigue Strength
Fatigue Class Combination Model to Quantify the Influence of Multiple Weld Imperfections on Fatigue Strength Open
View article: Various Influences on the Fatigue Resistance of Important Steel Details
Various Influences on the Fatigue Resistance of Important Steel Details Open
Due to the revision of the Eurocode, two research projects funded by AiF-DASt-FOSTA reinvestigate the detail categories of EN 1993-1-9. Among others, investigations on the influence of weld imperfections on the fatigue strength of typical …
View article: The influence of axial misalignment on the load‐bearing capacity of buttwelded joints
The influence of axial misalignment on the load‐bearing capacity of buttwelded joints Open
Steel structures in Europe are generally designed and dimensioned according to EN 1993. The execution, in turn, is carried out according to EN 1090‐2, which for the evaluation of welded joints refers to the quality levels of EN ISO 5817. H…
View article: Fatigue Verification Concept for Details containing Weld Imperfections
Fatigue Verification Concept for Details containing Weld Imperfections Open
Steel structures subjected to repeated stress variations must be verified against fatigue in accordance with EN 1993‐1‐9 on the basis of a detail catalog. As one major concern, the background of the detail classification in terms of an ext…
View article: On the development of regulations for the increased reuse of steel structures
On the development of regulations for the increased reuse of steel structures Open
When designing steel components, the industrial cycle is important to consider.At present, iron production in blast furnaces and the recycling of steel scrap predominate.However, there is great potential in the reuse of components instead …
View article: Jahresinhaltsverzeichnis Stahlbau 2022
Jahresinhaltsverzeichnis Stahlbau 2022 Open
View article: Vorschau: Stahlbau 10/22
Vorschau: Stahlbau 10/22 Open
In April 2020, the world's first submerged full size slip joint was installed in the Borssele V offshore wind farm.An extensive qualification programme in terms of numerical modelling and testing (see photo) was set up prior to installing …
View article: Vorschau: Stahlbau 4/22
Vorschau: Stahlbau 4/22 Open
View article: Vorschau: Stahlbau 2/22
Vorschau: Stahlbau 2/22 Open
Particularly efficient steel components can be designed by performing a plastic global analysis of a structure that is also made of high-strength steel.However, plastic design of high-strength steel structures is not embodied in current st…
View article: On the plastic design of high‐strength steel beams
On the plastic design of high‐strength steel beams Open
Particularly efficient steel components can be designed by performing a plastic global analysis of a structure made of high‐strength steel (HSS) as well. However, plastic design of HSS structures is not embodied in current standards, which…
View article: Experimental and numerical investigations on the rotation capacity of high strength steel beams
Experimental and numerical investigations on the rotation capacity of high strength steel beams Open
In order to design efficient and highly utilised sections, the plastic/plastic design approach depicts a valuable tool. Concerning plastic design, Eurocode 3 requires only Class 1 cross‐sections and material grades up to S460, depicting co…
View article: Analysis of fatigue test data to reassess EN 1993‐1‐9 detail categories
Analysis of fatigue test data to reassess EN 1993‐1‐9 detail categories Open
This paper addresses the assessment of fatigue details according to EN 1993‐1‐9, which form the basis of the most important fatigue verification, the nominal stress approach. First of all, a suitable statistical methodology had to be defin…
View article: Investigations on the fatigue behavior of end plate connections with prestressed bolts
Investigations on the fatigue behavior of end plate connections with prestressed bolts Open
In many areas of our infrastructure, as for instance the construction of crane runway beams, fatigue design of steel structures is a major issue. An important detail in practice, but insufficiently classified in the (Eurocode 3-1-9, 2005) …
View article: PREDICTION OF DUCTILE DAMAGE IN CASE OF SEISMIC ACTION USING INNOVATIVE DAMAGE MECHANICS
PREDICTION OF DUCTILE DAMAGE IN CASE OF SEISMIC ACTION USING INNOVATIVE DAMAGE MECHANICS Open
An approach to investigate the true behaviour of dissipative elements utilising numerical simulations is presented.By way of example dissipative members in terms of beamcolumn connections of moment-resisting frames are considered.Material …