Residual Stress
Mostrando 25-36 de 205 artigos, teses e dissertações.
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25. Analysis and modeling of simulated residual stress of mold injected plastic parts by using robust correlations
ABSTRACT The injection molding process is the most widely used processing technique for polymers. The analysis of residual stresses generated during this process is crucial for the part quality assessment. The present study evaluates the residual stresses in a tensile strength specimen using the simulation software Moldex3D for two polymers, polypropylene an
Matéria (Rio J.). Publicado em: 02/10/2017
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26. Microstructure and Mechanical Properties of ASTM A743 CA6NM Steel Welded by FCAW Process
CA6NM steel is widely used in the manufacture of hydraulic turbines metallic parts, due to its resistance to corrosion and cavitation damage, combined with good weldability and fatigue properties. However, welding of this type of steel is complex and to ensure a minimum residual stress after welding it is necessary perform a post welding heat treatment (PWHT
Mat. Res.. Publicado em: 21/09/2017
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27. Residual Stresses Analysis in Ball end Milling of Nickel-Based Superalloy Inconel 718
Inconel 718 is widely used in the aviation, space, automotive and biomedical industries because of its outstanding properties. Near-surface residual stresses that are induced by ball end milling in Inconel 718 can be crucial for the performance and service time of the machined parts. In this paper, the influences of cutting conditions, including the use of c
Mat. Res.. Publicado em: 18/09/2017
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28. Experimental Analysis of Residual Stresses in Pre-Straightened SAE 1045 Steel
This paper aims at analyzing the effects of the roller pre-straightening of wire-rods on residual stress distributions in SAE 1045 steel bars. The combined drawing process is used in industrial production of bars in order to obtain a good surface quality and improved mechanical properties complying with specifications of the final products. In this process,
Mat. Res.. Publicado em: 24/08/2017
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29. Effect of the Cooling Rate on the Properties of Veneer Porcelain for Zirconia Dental Prosthesis
To solve chipping of veneer porcelain in zirconia dental prosthesis it has been studied different cooling rates in firing schedules to control residual stresses generated by differences in thermal properties between the ceramics. However, cooling rates may affect the porcelain, irrespectively of interaction with zirconia. This study analyzed the effect of co
Mat. Res.. Publicado em: 07/08/2017
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30. Impact Damage Analysis with Stress Continuity Constraints Fulfilment at Damaged-Undamaged Regions and at Layer Interfaces
Abstract Low-velocity impacts have a relevant importance for safety of laminated and sandwich composite structures, because they are highly susceptible to damage. In this paper, a 3D cost effective zig-zag model is developed in order to efficiently simulate such impacts. It a priori fulfills the continuity of out-of-plane stresses at layer interfaces, the co
Lat. Am. j. solids struct.. Publicado em: 2017-08
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31. Relation Between Dendrometric Variables and Growth Stress in Eucalyptus
ABSTRACT The objective of this study was to identify eucalyptus clones for the production of sawed timber based on dendrometric variables and longitudinal residual deformation (LRD), analyzing the correlation between these characteristics. 20 Eucalyptus grandis x Eucalyptus urophylla clones with 13 years of age were analyzed. The crown size, diameter at brea
Floresta Ambient.. Publicado em: 31/07/2017
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32. Synthesis of Vanadium Interface for HFCVD Diamond Deposition on Steel Surface
Laser cladding of vanadium carbide powder developed an interlayer on AISI D6 steel as a diffusional barrier and to relief thermal residual stress. Laser cladding experiments varied resolution (DPI) and scanning speed (mm/s). CVD diamond deposition on this interface went on by HFCVD technique. The coatings were characterized by X-ray diffraction analysis (XRD
Mat. Res.. Publicado em: 06/07/2017
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33. Microstructure and Residual Stresses in a Friction Stir Welded Butt Joint of as-cast ZK60 Alloy Containing Rare Earths
The effect of a travel speed of 200 mm/min as well as a tool rotational speed of 1200 rpm on butt joint quality of friction stir welding (FSW) ZK60 magnesium casting alloy containing 1.5 wt.% rare earths (ZK60-1.5RE) was investigated to determine microstructure and residual stresses. FSW results in the generation of heterogeneous metallurgical structures con
Mat. Res.. Publicado em: 27/04/2017
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34. Minimally invasive treatment of female stress urinary incontinence with the adjustable single-incision sling system (AJUST ™) in an elderly and overweight population
ABSTRACT Introduction The prevalence of urinary incontinence is increasing. Two major risk factors are overweight and age. We present objective and subjective cure rates of elderly and overweight patients treated with an adjustable single-incision sling system (AJUST™, C.R. BARD, Inc.). Materials and Methods Between 04/2009 and 02/2012 we treated 100 f
Int. braz j urol.. Publicado em: 2017-04
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35. Discerning the Fatigue Crack Growth Behavior of API X65 Steels Under Sequence Loading
Abstract This paper presents the effect of sequence loading on fatigue crack growth of API X65 steel tested in room temperature. Most of pipeline steels are subjected to wide spectrum of loading during the length of service. Influence of load history effect can cause a trickier assessment to the fatigue behaviour. The objective of this study is to determine
Lat. Am. j. solids struct.. Publicado em: 2017-02
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36. Effects of Key Factors on Hull Girder Ultimate Strength Estimation by Progressive Collapse Calculations
Abstract The estimation of the ship hull girder ultimate strength under vertical bending moments as close to real behavior is vital both for design stage or seagoing life. The maximum load carrying capacity of ship hulls called ultimate strength depends on a number of factors including the strength of the structural material, initial distortions, dimensions
Lat. Am. j. solids struct.. Publicado em: 2016-12