Results 221 to 230 of about 224,577 (263)

Consideration of stress gradient effects for complex structures in local fatigue approaches

2015
The assessment of the fatigue strength by means of local approaches is very conservative compared with experiments of complex plated structures connected by welded joints. Here, relatively long crack propagation phases were observed. At first, this paper deals with numerical crack propagation simulations which were performed for different geometrical ...
Fischer, Claas, Fricke, Wolfgang
openaire   +2 more sources

The fatigue limit prediction of notched components – A critical review and modified stress gradient based approach

International Journal of Fatigue, 2020
Abstract Classical fatigue limit prediction models and material-dependent characteristic length parameters for notched components are critically reviewed before a modified stress gradient based approach is proposed to integrate the non-propagation behavior of microstructurally small crack.
Jifa Mei, Shizhu Xing, Anoop Vasu, Jerry Chung, Ravi Desai, Pingsha Dong   +5 more
openaire   +1 more source

Fatigue life prediction of notched components under size effect using stress gradient-based approach

International Journal of Fracture, 2021
Notch and size effects show vital influence on fatigue performance of engineering components, which deserve particular attention for ensuring their structural integrity and reliability. In this study, the influences of size effect and stress gradient on effective stress as well as fatigue life were studied.
Wen-Long Ye, Shun-Peng Zhu, Xiao-Peng Niu, Jin-Chao He, Qingyuan Wang   +4 more
openaire   +1 more source

Plane-Strain Problems for a Class of Gradient Elasticity Models—A Stress Function Approach

Journal of Elasticity, 2011
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +2 more sources

Mapping the gender gradient in posttraumatic stress disorder prevalence: A machine learning approach

Journal of Traumatic Stress
AbstractThe prevalence of posttraumatic stress disorder (PTSD) among women is over twice that of men, but the underlying mechanisms for these differences remain poorly understood. This study introduces a novel approach to examining gender and PTSD, moving beyond the binary group labels of male and female to explore the summative impact of gender‐linked
Rachel Kimerling, Rachel N. Ward, Sam Leder, Gisselle C. Tamayo, McKenzie Lockett   +4 more
openaire   +2 more sources

X-ray diffraction at constant penetration depth – a viable approach for characterizing steep residual stress gradients

Journal of Applied Crystallography, 2008
The experimental analysis of near-surface residual stresses by X-ray diffraction methods is based on measuring the spacings of lattice planes while the inclination ψ with respect to the surface plane is changed stepwise. A characteristic feature of conventional techniques is that the penetration depth of the X-rays is altered as inclination is varied ...
Erbacher, Thomas, Wanner, Alexander, Beck, Tilmann, Vöhringer, Otmar   +3 more
openaire   +3 more sources

The use of the theory of critical distance and the stress-gradient approach in the fatigue life estimation of notched components

Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications, 2016
Fatigue life prediction for machine components is a fundamental factor in the industrial world, and therefore several methods can be traced in technical literature to estimate life of notched components. The present paper correlates the classical stress-gradient approach, or support factor method, proposed by Siebel, Neuber and Petersen with the more ...
SPAGGIARI, Andrea, CASTAGNETTI, Davide, DRAGONI, Eugenio, Bulleri, S.   +3 more
openaire   +1 more source

A modelling approach to discriminate contributions of soil hydrological properties and slope gradient to water stress in Mediterranean vineyards

Agricultural Water Management, 2020
Grapevine is a widespread crop for grape and wine production, often cultivated on hilly areas. Moderate vine water stress plays an important role in determining high-quality viticulture. However, a precise quantification of the effect of hydraulic properties and slope gradient on hilly soil water balance and consequently on vine stress has not yet been
Angelo Basile, Rossella Albrizio, Dario Autovino, Antonello Bonfante, Roberto De Mascellis, Fabio Terribile, Pasquale Giorio   +6 more
openaire   +4 more sources

A Novel Semi-Analytical Approach for Micro Beams Subjected to Electrostatic Loads and Residual Stress Gradients

Volume 6: ASME Power Transmission and Gearing Conference; 3rd International Conference on Micro- and Nanosystems; 11th International Conference on Advanced Vehicle and Tire Technologies, 2009
Beam structures are widely used in MEMS sensors and actuators. MEMS micro beams are usually curled due to residual stresses and the characteristics of micro beams subjected to both residual stress gradients and electrostatic forces must be investigated for providing accuracy information for designing sensors and actuators.
Kuang-Shun Ou, Kuo-Shen Chen, Tian-Shiang Yang, Sen-Yung Lee   +3 more
openaire   +1 more source

A new approaching method to estimate fracture gradient by correcting Matthew–Kelly and Eaton's stress ratio

Journal of Petroleum Science and Engineering, 2015
Abstract Fracture pressure is one of the most important parameters in wellbore stability. Fracture pressure shows the ability of rock to hold vertical stress before starts to fracture. The application of fracture gradient (FG) affects the well design, such as mud weight profile, casing setting depth, and cementing operation.
Bonar Tua Halomoan Marbun, Anisa Noor Corina, Gde Valdy Arimbawa, Ramadhana Aristya, Sigit Purwito, Aldiano Falah Hardama   +5 more
openaire   +1 more source