Principles of variable amplitude fatigue design and testing
, 2022 S.3-23The proper consideration of variable amplitude loading by utilizing service spectra and appropriate Gassner-lines is essential for the design of light-weight components and structures by allowing loads in significant excess of the Woehler-line (S-N
Sonsino, C.M.
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Fatigue crack growth rates under variable amplitude load spectra containing tensile underloads [PDF]
, 2003 An extensive research program was performed to investigate the load interaction effect of the combined action of small amplitude high R ratio cycles and large amplitude low R ratio underloads on the crack growth of large cracks.
Zitounis, Vasilios
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Lightweight potential of welded high-strength steel joints from S700 under constant and variable amplitude loading by high-frequency mechanical impact (HFMI) treatment [PDF]
, 2022 467475Investigations with longitudinal stiffeners of the steel grade S700 under fully-reversed, constant amplitude loading and under variable amplitude loading with a straight-line spectrum show impressive fatigue strength improvement by high-frequency ...
Sonsino, C.M. +2 more
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Optimisation of variable helix end milling tools [PDF]
, 2010 High productivity, low cost and high profits are important issues in aerospace, automotive and tool/die metal manufacturing industries. Machining processes are widely used in manufacturing operations for metal manufacturing rather than casting and ...
Yusoff, Ahmad
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Crack simulation models in variable amplitude loading - a review [PDF]
Fracture and Structural Integrity, 2016 This work presents a review of crack propagation simulation models considering plane stress and plane strain conditions. It is presented also a chronological different methodologies used to perform the crack advance by finite element method.
Luiz Carlos H. Ricardo +1 more
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Amplitude Modulation of Short-timescale Hot Spot Variability [PDF]
The Astrophysical Journal, 2021 Abstract Variability of Classical T Tauri stars (CTTS) occurs over a vast range of timescales. CTTS in particular are subject to variability caused by accretion shocks, which can occur stochastically, periodically, or quasi-periodically on timescales over a few days.
Lauren I. Biddle +5 more
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Metals, 2018 This study aims to investigate the effect of loading factors on damage accumulation under variable amplitude vibration (VAV). Vibration fatigue experiments are conducted under both constant amplitude vibration (CAV) and VAV loading cases.
Jiewei Lin +3 more
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Quasar variability: Correlations with amplitude [PDF]
Astronomy and Astrophysics Supplement Series, 2000 The relation between quasar variability and parameters such as luminosity and redshift has been a matter of hot debate over the last few years with many papers on the subject. Any correlations which can be established will have a profound effect on models of quasar structure and evolution.
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A progressive damage fatigue model for unidirectional laminated composites based on finite element analysis: theory and practice [PDF]
Fracture and Structural Integrity, 2018 The simulation of the fatigue damage of laminated composites under multi-axial and variable amplitude loadings has to deal with several new challenges and several methods of damage modelling.
M. Hack +7 more
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Non-local energy based fatigue life calculation method under multiaxial variable amplitude loadings [PDF]
, 2013 Reliable design of industrial components against high cycle multiaxial fatigue requires a model capable of predicting both stress gradient and load type effects. Indeed, taking into account gradient effects is of prior importance for the applicability of
PALIN-LUC, Thierry +4 more
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