SteBLife, a New Approach for the Accelerated Generation of Metallic Materials’ Fatigue Data

Acosta, Ruth; Wu, Haoran; Venkat, Ramanan Sridaran; Weber, Fabian; Tenkamp, Jochen; Walther, Frank; Starke, Peter

doi:10.3390/met10060798

Cited by 10 publications

(6 citation statements)

References 31 publications

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“…Based on this approach and the specimen's symmetry, 5 cyclic deformation curves are generated, providing a database for the

Σ_{a} - M

relationship. The generalized Morrow and Basquin relations are combined to calculate the S–N dataset for the material being investigated, 49 which is similar to the workflow of the PhyBaL approach. Using this strategy, three different procedures were developed within the stepped bar fatigue life (SteBLife) approach.…”

Section: Fatigue Life Prediction Methodsmentioning

confidence: 99%

Thermo‐based fatigue life prediction: A review

Teng

2023

Fatigue Fract Eng Mat Struct

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The main objective of this review paper is twofold: Recall the most captivating areas of research in predicting the fatigue life of metals with the application of thermal methodology, particularly for the stress‐controlled fatigue tests. The explicit lifetime models reviewed have been developed by scholars over the past two decades owing to the advancements in infrared thermal imaging technology. Introduce, discuss, and conclude a broad range of alternative theoretical frameworks in thermodynamics. Some investigations are made with the previous methods, including the most recent evolutions of lifetime models for structural integrity across various fields. Some future perspectives are provided in final, which could pave the way for a new realistic or potential capability.

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“…Based on this approach and the specimen's symmetry, 5 cyclic deformation curves are generated, providing a database for the

Σ_{a} - M

Section: Fatigue Life Prediction Methodsmentioning

confidence: 99%

Thermo‐based fatigue life prediction: A review

Teng

2023

Fatigue Fract Eng Mat Struct

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“…As reported in [117], the thermal methods [118][119][120][121][122][123][124][125][126][127], which are based on the detection of the self-heating effect of the metallic materials subjected to fatigue loading using the thermographic technique, can be classified into several categories.…”

Section: Thermal Methodsmentioning

confidence: 99%

Review of Fatigue Assessment Approaches for Welded Marine Joints and Structures

Corigliano

Crupi²

2022

Metals

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Welded joints are widely used in many sectors and represent the main joining technique also in the marine industry. The welded joints are sites of high stress concentrations and are subject to severe conditions for the marine environment. The design of marine welded joints has to consider the effects from wave loads, ship motions and loading/unloading operations and corrosion effects. The aim of this scientific work is to discuss about the state of the art of the standards and the approaches for predicting the fatigue life of welded joints used for the marine industry. Several approaches are examined in order to provide an overview and highlight the advantages and limitations of each method. Furthermore, recent advances in welding of dissimilar metals and autonomous welding are considered.

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“…If the slopes determined according to Equations ( 5) and ( 6) are entered into Equations ( 7)-( 9), Equation ( 10) is obtained. Since at least always two CATs are performed, the coefficients B and C can be determined via Equation (10).…”

Section: 𝜀 𝑎𝑡 = 𝜀 𝑎𝑒𝑙 + 𝜀 𝑎𝑝𝑙mentioning

confidence: 99%

“…Many of those STEP methods are based on generalized Morrow and Basquin equations, e.g., in a combination of strain (SIT) or load (LIT) increase tests and stress or strain-controlled constant amplitude tests (CAT), which enable the evaluation of S-N curves for the materials investigated. The validation of the STEP has already been successfully performed on various light metal alloys and steels in different heat treatment conditions, including the determination of scatter bands for different fracture probabilities [10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

A Short-Time Approach for Fatigue Life Evaluation of AISI 347 Steel for Nuclear Power Energy Applications

et al. 2021

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AISI 347 austenitic steel is, as an example, used in nuclear energy piping systems. Piping filled with superheated steam or cooled water is particularly exposed to high stresses, whereupon local material properties in the pipes can change significantly, especially in the case of additional corrosive influences, leading to aging of the material. In the absence of appropriate information, such local material property variations are currently covered rather blanketly by safety factors set during the design of those components. An increase in qualified information could improve the assessment of the condition of such aged components. As part of the collaborative project “Microstructure-based assessment of the maximum service life of core materials and components subjected to corrosion and fatigue (MiBaLeB)”, the short-time procedure, StrainLife, was developed and validated by several fatigue tests. With this procedure, a complete S–N curve of a material can be determined on the basis of three fatigue tests only, which reduces the effort compared to a conventional approach significantly and is thus ideal for assessing the condition of aged material, where the material is often rare, and a cost-effective answer is often very needed. The procedure described is not just limited to traditional parameters, such as stress and strain, considered in destructive testing but rather extends into parameters derived from non-destructive testing, which may allow further insight into what may be happening within a material’s microstructure. To evaluate the non-destructive quantities measured within the StrainLife procedure and to correlate them with the aging process in a material, several fatigue tests were performed on unnotched and notched specimens under cyclic loading at room and elevated temperatures, as well as under various media conditions, such as distilled water and reactor pressure vessel boiling water (BWR) conditions.

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SteBLife, a New Approach for the Accelerated Generation of Metallic Materials’ Fatigue Data

Cited by 10 publications

References 31 publications

Thermo‐based fatigue life prediction: A review

Thermo‐based fatigue life prediction: A review

Review of Fatigue Assessment Approaches for Welded Marine Joints and Structures

A Short-Time Approach for Fatigue Life Evaluation of AISI 347 Steel for Nuclear Power Energy Applications

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