Influence of notch stress

Influence of notch stress

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Numerical simulation of influence of filled joint on the

Field practice shows that, joints have very adverse influence on crack formation in the protective layer of rock mass, during blasting excavation. To improve the crack formation in rock mass with filled joints, V-shaped notch blasting method is conducted in simulation ...

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Influence of backing materials towards the fatigue

Request PDF Influence of backing materials towards the fatigue strength of butt-welded joints ... Effective notch stress, as an approach to evaluate the local stress at a notch (weld toe or ...

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Influence of phase transformations on the asymptotic

Abstract In this work, the residual stress distribution induced by the solidification and cooling of a fusion zone in the vicinity of a sharp V-notch tip is investigated. The intensity of the residual asymptotic stress fields, quantified by the notch stress intensity factors ...

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Influence of geometry and material on the stress intensity

Then, a sharp V-notch and a semicircle notch are respectively taken, to analyze the influence of geometry characteristic and material property on the stress intensity for the crack initiating from a bi-material notch. The rule with respect to the influence of notch

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Fatigue strength improvement of a 4140 steel by gas

The stress concentration factor K t was computed by dividing the maximum axial stress at the notch tip by the nominal stress S computed over the reduced section (). Its value is 1.65 for the blunt notch, 2.11 for the medium notch, and 5.03 for the sharp notch.

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3 Mechanical Properties 3 1 Tensile Strength

.The influence of strain velocity is shown in Fig. 313, 4. The relation with the tensile yield stress at a low strain velocity can be displayed by the straight line as shown in Fig. 313, but increases rapidly at a high strain velocity as shown in Fig. 314.

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Influence of Microstructure on Fatigue Properties of Alloy 718

Figure 6 : Influence of grain size on fatigue life, Figure 7 : Influence of grain size on fatigue life, at 650 C, smooth specimen, stress 430 Mpa, at 650 C, notch specimen, stress 260 Mpa, essential to obtain notch ductility [5-7]. It was

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Influence of Notch Sharpness on the Stress-Rupture

Influence of notch on the rupture strength in Creep Rupture Test (conducted so as to finish in around 1000 hours) of three heat resisting alloys with varying degrees of precipitation hardenability, 17 Cr-13 Ni-3W, LCN-155, A-286, either currently in use or expected to

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Mean Stress Correction Effects On the Fatigue Life Behavior of Steel Alloys by Using Stress

Mean Stress Correction Effects On the Fatigue Life Behavior of Steel Alloys by Using Stress Life Approach Theories ... be characterized as the influence of stress ratio, R, the ratio of a local minimum stress to a local maximum stress in a fatigue load cycle ...

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Fatigue design based on S-N data

Notch stress The notch stresses accounts for any stress created by the considered detail inclusive of the non-linear stress field due to the notch at the weld toe. It is composed of the sum of the structural stress and the nonlinear peak stress, see Figure 7.

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Influence of notch geometry on the estimation of the

As a rule of thumb, stress fields around sharp notches decay very rapidly though the level of stress is high in the notch root, while for blunt notches the maximum (hot spot) stress and the stress gradient are mild if the nominal applied stress is not exaggerated .

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Influence of Stress and Notch Orientation on SCC in an

Read "Influence of Stress and Notch Orientation on SCC in an Al-Alloy; Conditions of Pit Formation, Journal of the Mechanical Behavior of Materials" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications

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Influence of notch geometry and interface on stress

Read "Influence of notch geometry and interface on stress concentration and distribution in micro-tensile bond strength specimens, Journal of Dentistry" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications

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Effect of Stress Concentration on Fatigue Life

©2013 Materion Brush Inc. Effect of Stress Concentration on Fatigue Life (continued) So what effect does a stress riser have on fatigue life? Since the stress is much higher in these areas than in the rest of the part, fatigue failures will usually initiate in these

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Notch strengthening or weakening governed by

The Griffith theory predicts that the strength of notched samples decrease when the notch depth increases. If we further consider the influence of notch root radius, it is known that the stress concentration factor for cylinders having finite diameter and finite notch 1

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DIN15018 Fatigue SDC Verifier

For the fatigue resistance the DIN 15018 uses weld or notch groups where W0-W2 are classes for unwelded material and K0-K4 are for welded designs). The table 17 of the DIN 15018 shows the influence of the material type, the crane group and the notch group on ...

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(PDF) Influence of three-dimensional weld undercut

notch stress results for measured weld geometry resulted in smaller S-N scatter than use of 95% pro bability value for one specimen set, while for other set, this was other ...

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Materials Free Full-Text Stress Ratio and Notch Effects

The fatigue mean stress sensitivity and fatigue-creep mean stress sensitivity of this material increased with the increase of fatigue life. The new model, based on the Murakami model, can provide more appropriate predictions for notch fatigue strength.

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Notch Toughness

As mentioned previously, in the presence of a flaw, such as a notch or crack, a material will likely exhibit a lower level of toughness. When a flaw is present in a material, loading induces a triaxial tension stress state adjacent to the flaw. The material develops

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Fakulteta za gradbeništvo in geodezijo Univerze v

Due to the presence of the notch and the resulting high stress concentration factor, the fatigue behaviour is in most cases hardly affected by: The mean stress level The material quality. The negligible influence of the mean stress level is caused by the high stress

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Notch effect - definition of notch effect by The Free

Define notch effect. notch effect synonyms, notch effect pronunciation, notch effect translation, English dictionary definition of notch effect. n metallurgy building trades the increase in stress in an area of a component near a crack, depression, etc, or a change in ...

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Influence of the Notch Rounding Radius on Estimating

This article analyses the influence of the notch rounding radius on the elastic notch stress concentration factor Kt The aim of the analysis is to evaluate the notch stress concentration according to local notch stress approach.

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Influence of Stress and Notch Orientation on SCC in an

Abstract In the present work, the influence of stress and notch orientation on stress corrosion cracking (SCC) susceptibility of aluminum Alloy AA 5052 (Al-2.5 wt% Mg) was investigated. The experiments were performed by measuring the time-to-failure (TTF) of Al ...

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Influence of Stress and Notch Orientation on SCC in an Al

Read "Influence of Stress and Notch Orientation on SCC in an Al-Alloy; Conditions of Pit Formation, Journal of the Mechanical Behavior of Materials" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications

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Stress Concentration - Fatigue Analysis on the Web

Frost, A Relation Between the Critical Alternating Propagation Stress and Crack Length for Mild Steel Proceedings of the Institute for Mechanical Engineers, Vol. 173, No. 35, 1959, 811 -836 Significance

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Influence of notch geometry and interface on stress

Influence of notch geometry and interface on stress concentration and distribution in micro-tensile bond strength specimens By Aline De Almeida Neves Coutinho , Eduardo Coutiño, Marcio Vivan Cardoso, Siegfried Jaecques, Paul Lambrechts, Jos Vander ...

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Strength, Fatigue and Fracture

Mean Stress Influence on Life 0.1 1 10 100 1000 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 Mean Stress Ultimate Strength ... than notch mean stress Nominal mean stress is greater than notch mean stress Nominal Notch Factors Influencing

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Stress Concentration Produced by Holes and Notches

APM-56-11 Stress Concentration Produced by Holes and Notches By A. M. WAHL1 a n d R. BEEUWKES, Jr.,2 EAST PITTSBURGH, PA. The problem of stress-concentration effects, produced by holes and notches in bars under tension is, of interest to machine

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Effect of Temperature-Force Factors and Concentrator

The influence of the notch shape on the impact fracture of 17Mn1Si steel is investigated at different temperatures with the focus placed on the low-temperature behavior. An approach towards fracture characterization has been suggested based on the description of ...

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Influence of notch geometry and interface on stress

Results For hourglass homogeneous specimens, K t equaled 1.32 and 1.12 for a notch radius of 0.6 mm and 3.3 mm, respectively. A non-uniform axial (σ zz) stress distribution was found in the notch cross-section, with values at the outer edge being 78% and 25% larger than at the center. ...

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Influence of stress and notch orientation on SCC in an

The oriented growth of γ1-Al2O3 cells and the orientation of the stress axis of the specimen both simultaneously influence the TTF during SCC tests. Our unnotched specimens, the primary determining factor is the oriented growth of γ1-Al2O3 cells; longer TTFs

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The influence of notch-tip geometry on the distribution

Materials Science and Engineering, 41 (1979) 243 - 250 243 Elsevier Sequoia S.A., Lausanne -- Printed in the Netherlands The Influence of Notch-tip Geometry on the Distribution of Stress and Strain A. T. SANTHANAM and R. C. BATES Materials Evaluation and ...

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