Thomas Beier
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View article: Low cycle fatigue behavior of welded joints in S960M and X6CrNiTi18-10: evaluating Ke-factor and FKM fatigue prediction methods
Low cycle fatigue behavior of welded joints in S960M and X6CrNiTi18-10: evaluating Ke-factor and FKM fatigue prediction methods Open
Most commonly used guideline-based procedures for assessing the fatigue strength of welded joints are limited to the high cycle fatigue (HCF) regime. Although calculation methods for the low cycle fatigue (LCF) regime also exist, they are …
View article: Fatigue strength assessment of welded steel fasteners using structural stress concept with consideration of the mounting pre-load
Fatigue strength assessment of welded steel fasteners using structural stress concept with consideration of the mounting pre-load Open
The document presents a comprehensive investigation into the fatigue strength assessment of welded fasteners, specifically bolts and nuts, used in various engineering applications. A fatigue strength assessment approach using a structural …
View article: A two-point fatigue strength assessment for surface-hardened notched components under consideration of residual stresses based on the local strain approach
A two-point fatigue strength assessment for surface-hardened notched components under consideration of residual stresses based on the local strain approach Open
The "Guideline non-linear" of the German Research Association for Mechanical Engineering provides a fatigue strength assessment for machine components based on the local strain approach. Currently, this assessment is limited to homogeneous…
View article: Autofrettage of high-pressure components made of ultra-high-strength-steel
Autofrettage of high-pressure components made of ultra-high-strength-steel Open
This work is primarily concerned with the fatigue life of high-pressure bearing components with intersecting holes, typically used in Diesel engine fuel injection systems. The investigation focuses on specimens with orthogonally intersecti…
View article: Estimation of the fatigue strength of ultra-high strength steels
Estimation of the fatigue strength of ultra-high strength steels Open
For the dimensioning of components made of low and medium-strength steels, there are established estimation methods for the material properties as well as transfer functions to transmit these parameters to components. However, for ultra-hi…
View article: Autofrettage of component-like ultra high Strength Steel Specimens with intersecting Holes
Autofrettage of component-like ultra high Strength Steel Specimens with intersecting Holes Open
This work is primarily concerned with the fatigue life of high-pressure-bearing components with intersecting holes, typically used in Diesel engine fuel injection systems. The investigation focuses on specimens with intersecting holes that…
View article: Influence of discontinuities on fatigue strength using the example of additively manufactured specimens made of AlSi10Mg
Influence of discontinuities on fatigue strength using the example of additively manufactured specimens made of AlSi10Mg Open
Fatigue strength is largely affected by the influence of discontinuities: geometric notches like holes and corners in components, surface notches (roughness), pores and inclusions in the material. Therefore fatigue of structures and materi…
View article: Approximation of the crack driving force for cracks at notches under static and cyclic loading
Approximation of the crack driving force for cracks at notches under static and cyclic loading Open
The work deals with the efficient calculation of the elastic-plastic crack driving force (J-integral for monotonic loading andΔJ-integral under cyclic loading) for short cracks at notches as essential parameter for the reliable static and …
View article: Fatigue strength and life determination of weldments based on fracture mechanics
Fatigue strength and life determination of weldments based on fracture mechanics Open
The paper provides an overview on the results of a German cluster project on the use of fracture mechanics to the determination of the fatigue strength of weldments with fatigue cracks originating at the weld toes. The approach includes (a…