Results 21 to 30 of about 4,711,500 (287)

Steady-State Creep of Asphalt Concrete

open access: yesApplied Sciences, 2017
This paper reports the experimental investigation of the steady-state creep process for fine-grained asphalt concrete at a temperature of 20 ± 2 °С and under stress from 0.055 to 0.311 MPa under direct tension and was found to occur at a constant rate ...
Alibai Iskakbayev   +2 more
doaj   +1 more source

An inverse method for evaluating weld residual stresses via fatigue crack growth test data [PDF]

open access: yes, 2010
This paper presents an inverse method for calculating the thermal residual stresses in welded specimens via measured fatigue crack growth rates. Firstly, fracture-mechanics superposition law has been used to extract the stress intensity factor due to ...
Rui Bao   +3 more
core   +1 more source

Predicting fatigue crack growth rate in a welded butt joint: The role of effective R ratio in accounting for residual stress effect [PDF]

open access: yes, 2009
A simple and efficient method is presented in this paper for predicting fatigue crack growth rate in welded butt joints. Three well-known empirical crack growth laws are employed using the material constants that were obtained from the base material ...
Servetti, Guido, Zhang, X.
core   +1 more source

Investigation the plastic flows in the metal stamping-drawing process at the die corner

open access: yesActa Polytechnica
The present investigation covers the study of the influence of metal-plastic flow on the die corner for the deformed state of the blank and energy-power parameters during stamping-drawing. The influence of workpiece size and material on stress intensity
Anton V. Onopchenko   +3 more
doaj   +1 more source

Numerical simulation of stress intensity factor at axial through-wall crack tip of pipeline

open access: yesYou-qi chuyun, 2020
Crack is a common defect form in pipelines, and its stress intensity factor is an important basis for safety evaluation of pipelines. In order to accurately acquire the stress intensity factors of cracks in pipelines, the finite element model for solving
Qinggang LIU   +3 more
doaj   +1 more source

Life Estimation in the Railway Wheels Under the Influence of Residual Stress Field [PDF]

open access: yesInternational Journal of Railway Research, 2014
This paper presents the prediction of fatigue life and crack propagation in the railway wheel due to the stress field caused by mechanical loads and press fitting process of a railway wheel.
S.M Salehi   +2 more
doaj  

Stress Intensity Factors Evaluated from Discontinuous Displacements along a Slant Crack with a Center-Hole Notch

open access: yes, 1995
For cracks with a center-hole notch under the mixed-mode condition, a method is proposed in which the stress intensity factor can be directly evaluated from the discontinuous crack displacement, thus representing effective stress intensity factors. Using
Torii, Tashiyuki   +8 more
core   +1 more source

Linearized layering method for stress intensity factor determination

open access: yesSN Applied Sciences, 2022
Article highlights An approach to determine stress intensity factors by linearizing a layered notch stress profile is presented. Stress intensity factors for multiple notch geometries are investigated and tested using the Linearized Layering Method.
Bradley Storm, Jeries J. Abou-Hanna
doaj   +1 more source

Stress and Displacement Intensity Factors of Cracks in Anisotropic Media [PDF]

open access: yes, 2020
A relation connecting stress intensity factors (SIF) with displacement intensity factors (DIF) at the crack front is derived by solving a pseudodifferential equation connecting stress and displacement discontinuity fields for a plane crack in an elastic ...
Karakozova, A.   +3 more
core   +1 more source

Stress intensity calibrations for closed cracks

open access: yesThe Journal of Strain Analysis for Engineering Design, 1989
A powerful method is described for determining stress intensity factors for plane cracks intersecting a free edge and where the bulk stress field is such that the crack faces are pressed together along at least part of their length. This configuration occurs widely in problems where the crack is propelled by a contact stress field, but the simpler ...
Hills, D, Nowell, D
openaire   +1 more source

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