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Literatura académica sobre el tema "Test Erichsen"

Autor: Grafiati

Publicado: 25 de mayo de 2024

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Artículos de revistas sobre el tema "Test Erichsen"

Şener, Bora, and E. S. Kayali. "Effectiveness of Stamping Lubricants in Erichsen Test." Key Engineering Materials 549 (April 2013): 325–32. http://dx.doi.org/10.4028/www.scientific.net/kem.549.325.

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In the present work, formability of ultra low carbon steel sheets (uncoated interstitial free and galvanized steel sheet) has been characterized and the effectiveness of dry and liquid lubricants on formability of these steel sheets was evaluated by using the standard Erichsen test. Primarily, some important mechanical properties of materials like strain hardening coefficient (n), normal anisotropy (r) were determined using the tensile test and formability of these steel sheets has been correlated with these mechanical properties. Then these steel sheets were subjected to the Erichsen test using four different lubricants. Teflon, PVC, Polyethylene films and mineral oil were used in the experiments. Finite element simulations were done using various friction coefficients. Erichsen tests were conducted at 1 kN blank holder force and 2.4 mm/min punch velocity. Values of the Erichsen index and punch force-displacement curves were determined for each lubricant. PVC film proved to be the most effective lubricant for both materials.

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Giuliano, Gillo, and F. Samani. "Effect of Lubrication on the Erichsen Test." Applied Mechanics and Materials 365-366 (August 2013): 425–28. http://dx.doi.org/10.4028/www.scientific.net/amm.365-366.425.

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This study analyzes experimentally the influence of the friction between the sheet metal and the die surfaces on the results of the Erichsen test in terms of load-displacement curve of the punch, the normalized thickness measured at the specimen apex and the distance measured between the thinnest area of the specimen and the lateral surface of the blankholder. Two types of aluminium alloys, AA 2017 Al-Cu alloy (Al-4.5%Cu-1.0%Mn-1.0%Mg) and AA 5083 Al-Mg alloy (Al-4.5%Mg-1.0%Mn-0.15%Cr), with thickness of 1.0 mm are selected as the experimental materials for Erichsen test.

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Uriya, Yu, and Jun Yanagimoto. "Erichsen cupping test on thermosetting CFRP sheets." International Journal of Material Forming 10, no. 4 (2016): 527–34. http://dx.doi.org/10.1007/s12289-016-1298-3.

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Giuliano, Gillo. "Evaluation of the Coulomb Friction Coefficient by the Erichsen Test." Applied Mechanics and Materials 365-366 (August 2013): 1190–93. http://dx.doi.org/10.4028/www.scientific.net/amm.365-366.1190.

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In this study, the Erichsen test is used to identify the friction coefficient of the Coulomb friction model coupling experimental tests results with numerical ones. The evaluation of the Coulomb friction coefficient is based on the distance measured between the thinnest area of the specimen and the lateral surface of the blankholder. Two types of aluminium alloys, AA 2017 Al-Cu alloy and AA 5083 Al-Mg alloy, with thickness of 1.0 mm are selected as the experimental materials for Erichsen test. Specimens are tested in unlubricated condition as well as using two different lubricants, namely Grease LB4 and Mexmoly.

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Gillo, Giuliano. "Influence of the Metal Sheet Parameters on the Results of the Erichsen Test." Applied Mechanics and Materials 217-219 (November 2012): 2444–47. http://dx.doi.org/10.4028/www.scientific.net/amm.217-219.2444.

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Considering an isotropic rheological law of the sheet material and the power law relationship between the stress and the plastic strain, the present paper by using the finite element method analyzes the influence of the material parameters on the results of the Erichsen test in terms of force-displacement curve of the punch and the normalized thickness measured at the specimen apex also varying the coefficient of the Coulomb friction law. Moreover for an AA5083 aluminum alloy the results of the numerical simulation of the Erichsen test will be compared to those obtained experimentally.

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Reddy, M. Rama Narasimha, M. Saran Theja, and M. Gangadhar Tilak. "Modified Erichsen Cupping Test for Copper, Brass, Aluminium and Stainless Steel." SIJ Transactions on Industrial, Financial & Business Management 06, no. 02 (2018): 01–06. http://dx.doi.org/10.9756/sijifbm/v6i2/0102550102.

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Kumar, S. Ramesh, S. Senthil Kumaran, M. Sree Arravind, and D. Venkateswarlu. "Effect of Microstructure and Mechanical Properties of Austenitic Stainless Steel 1.6mm Butt Welded by Plasma Arc Welding." Materials Science Forum 969 (August 2019): 619–24. http://dx.doi.org/10.4028/www.scientific.net/msf.969.619.

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Plasma Arc Welding (PAW) is more tolerant to joint misalignment than Laser Beam Welding (LBW) at a lower cost [1]. The present study deals with the assessment of mechanical and metallurgical properties of butt welded 1.6 mm thick austenitic stainless steel similar (SS304 and SS304) by using plasma arc welding technique. Similar butt-Welded joints were analyzed by using mechanical (Bend test, Erichsen cup test, tensile test) and metallurgical (Optical macroscopic and microscopic images) characterization methods. The bead width and depth of the butt welded 1.6mm thick butt joined SS304 was analyzed by macroscopic and microscopic images [2]. The Erichsen cup test was conducted on the weld specimens. The indentation was made on the weld specimens. In the similar metal joint the depth of indentation is high, which shows that the similar metal joint has better formability. This makes them appropriate for practicing in the aircraft industries (engine parts), automotive sector (engine-parts and assemblies) chemical processing, food processing, turbine buckets, pumps and valve parts [3]. Keywords: SS304, PAW, Butt weld, Erichsen Cup Test, Microstructure

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Nasri, Mohamed Toumi, Slimani Faouzi, A. Ayadi, Abel Cherouat, Mohamed Ali Rezgui, and Ali Zghal. "Inverse Identification Method to Characterize the Behavior of Coupled Elasto-Plastic Coupled to Damage Model Using Modified Erichsen Test." Advanced Materials Research 698 (May 2013): 21–28. http://dx.doi.org/10.4028/www.scientific.net/amr.698.21.

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This study presents experimental and numerical approaches to study the thermo-elasto-plastic behavior coupled to ductile damage of thin sheet. The study highlights the influence of temperature on the mechanical properties affecting the ability of forming aluminum sheet 1050A. The properties of the Swifts model hardening coupled to isotropic ductile damage variable and the Erichsen Index are obtained using inverse approach (Nelder-Mead method). The obtained results have established a correlation between the Index Erichsen formability of the material.

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Mansouri, L. Z., J. Coër, S. Thuillier, H. Laurent, and P. Y. Manach. "Investigation of Portevin-Le Châtelier effect during Erichsen test." International Journal of Material Forming 13, no. 5 (2019): 687–97. http://dx.doi.org/10.1007/s12289-019-01511-5.

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Zhang, Run Qi, Yi Qin Cai, Hao Xu Wang, Zhuang Li, and Qi Zhou. "Effects of Rolling Reduction on Cold Forming Properties of Commercially Pure Titanium Sheet." Materials Science Forum 960 (June 2019): 9–13. http://dx.doi.org/10.4028/www.scientific.net/msf.960.9.

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Different cold rolling reductions were adopted for commercially pure titanium sheet. Cold forming properties were investigated by a microstructural analysis, Vickers microhardness and erichsen value measurements. The results have shown that Cold rolling resulted in refined alpha grains. Alpha grain size was refined further by greater cold reduction. Alpha grain sizes of the specimens of processing 1, 2 and 3 reached 30.90 μm, 26.48 μm and 20.58 μm, respectively. Cold forming properties were affected by different alpha grain sizes. The hardness and erichsen value reached the lowest and the highest values for the specimens in processing 1. The hardness increased and erichsen value decreased due to the finer alpha grain size for the specimen which was cold-rolled at a reduction of 50% in processing 2. Erichsen test results of the specimens of processing 3 had the lowest values due to the deformation of a reduction of 70%. Cold forming properties of the specimens of processing 3 were deteriorated, this is because deformation leads to the high dislocation density and the stored energy increases with accumulated strain after deformation.

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Tesis sobre el tema "Test Erichsen"

Císařová, Michaela. "Vliv morfologie povlaku Zn na mezní podmínky při tažení tenkých plechů." Doctoral thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2012. http://www.nusl.cz/ntk/nusl-234011.

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The doctor thesis deals about the influence of zinc coating morphology on limit conditions formability of a thin sheet metal. In the introduction of the thesis is discusesed about current problems searching the most suitable morphology of the steel sheet metals, a method of appliing to the zinc sheet metal. The hot dip zinc coating is discussed in next chapter, the topical knowledges about the influence of the individual factors have some effect to coat calibre and quality. In literary researchs are discussed the concrete technological tests of zinc coating to harder sheet metal forming, the theory of the bend and the basic theory of pressing sheet metal. In following chapter is devoted interpretation selected technological tests, according to that is described behaviour, characteristics, influence of zinc coating formability of basic material and his morphology.

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Arvieu, Marie-Florence. "Compréhension des mécanismes de délamination dans le feuil peinture automobile." Compiègne, 2011. http://www.theses.fr/2011COMP1950.

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Le feuil peinture automobile est un système multicouches protégeant la carrosserie des agressions extérieures et participant à l’esthétisme du véhicule. C’est pourquoi, afin d’assurer la qualité de l’adhésion interfaciale entre les différentes couches, le feuil peinture est testé, notamment lors de variations des conditions d’application et de modifications des formulations. Ainsi, dans une politique industrielle de contrôle qualité du feuil peinture et de contrôle des risques, l’objectif de ce travail est de comprendre les mécanismes de délamination. Dans un premier temps, l��influence du taux de réticulation (et donc de la température du procédé) sur les évolutions chimiques et mécaniques des couches du système métal/feuil et ainsi sur leurs interfaces a été mis en évidence. En particulier, la qualité de l’adhésion des interfaces de type polymère/polymère dépend de la formation de liaisons covalentes fortes et donc de la réticulation. Dans un deuxième temps, il s’agit de vérifier que la variation du support métallique et du traitement de surface ne détériore pas le comportement mécanique du feuil peinture. L’étude des mécanismes de délamination interfaciale du feuil peinture dans les conditions particulières du test d’emboutissage ERICHSEN (à déformation plastique imposée) a montré que la délamination se produit systématiquement entre la carrosserie et le feuil. Dans un troisième temps, un nouveau test d’adhésion en cisaillement pur et sans déformation plastique, rayures ou chocs du feuil, est mis en place. Il mesure directement la contrainte de cisaillement provoquant la délamination et caractérise l’interface la moins adhésive en fonction des paramètres d’application<br>Coatings are used for protective and decorative purposes. Particularly car coatings are multi-layers systems deposited onto car metal sheets. The interactions inside layers and between layers are responsible for the whole coating performances. It is essential that each layer remains firmly coherent inside, adherent to each others and to the metal surface whatever the physicochemical and mechanical strain. To improve the quality of coatings, to optimize painting processes and to qualify adhesion and cohesion of coatings when varying formulation and processing parameters, it is necessary to understand the interfacial delamination mechanisms. The first investigation is to point out the impact of the cross-linking (as a function of the curing temperature) on chemical and mechanical evolutions of each layer. Indeed the interfacial adhesion quality is depending on the strong covalent bonds formation between polymer layers. In a second way we have to check thanks to the ERICHSEN punch test that the modification of the metallic substrate and the surface treatment will not damage the behavior of standard car coatings. It brings out that the delaminating interface is always the coating/metal one because of plastic deformation. The third part consists on a quantitative and qualitative characterization of the interfacial delamination thanks to a new shear test without any plastic deformation, scratch or punch. This test measures directly the shear strain leading to the delamination, depending on the surface treatment nature and it points out the less adhesive interface, depending on the process parameter (i. E. The curing temperature)

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Libros sobre el tema "Test Erichsen"

Institution, British Standards. Metallic materials - sheet and strip - Erichsen cupping test =: Matériaux métalliques - tôles et bandes - essai d'emboutissage Erichsen. BSI, 2003.

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Capítulos de libros sobre el tema "Test Erichsen"

Singh, Jaiveer, Min-Seong Kim, and Shi-Hoon Choi. "The Effect of Initial Texture on Deformation Behaviors of Mg Alloys Under Erichsen Test." In Magnesium Technology 2018. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-72332-7_35.

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Actas de conferencias sobre el tema "Test Erichsen"

Salazar, Julio Alberto Boix, Dirk F. de Lange, and Hugo I. Medellín Castillo. "Elastoplastic Analysis of the Erichsen Cupping Test Using Comsol Multiphysics FEM Code." In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-39018.

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One of the standard procedures to test the formability of sheet material is the Erichsen cupping test, in which the metal sheet blank is held in its place over a circular space and depressed by a semi-spherical punch. The depth of depression that can be reached is the measure of the formability. In this work the elastoplastic deformation of the sheet is analyzed by multipurpose Finite Element Method software Comsol Multiphysics. The Comsol package is not specifically developed or focused on the analysis of solid mechanical problems with elastoplastic model behavior and contact problems, and still limited literature is available in which sheet forming processes are analyzed with Comsol. In this work, the development and testing of a simulation model in Comsol is reported and comparison is made with results reported with other FEM software. The development and testing is realized in successive steps of increasing complexity. First a uniaxial stretching is simulated in order to evaluate the implementation of the elastoplastic material behavior. Next, the bending of a plate over a straight line is analyzed, adding the contact boundary condition between tool and sheet surface into the model. Finally, the axisymmetric model of the Erichsen cupping test is implemented. It is found that the default Von Mises yield function results in incorrect stresses, and needs to be replaced by a yield function in which the Von Mises stress is calculated based on the Cauchy tensor. The non-linear contact condition is a source of oscillations in the local stresses near the zone where contact is established. The simulation results obtained with the final model are compared with punch forces, stresses and strains obtained in literature, showing an adequate comparison.

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Liu, Wuyang, and Takashi Iizuka. "Trials to evaluate bulging formability of duplex embossed A1050-O sheet using erichsen test." In PROCEEDINGS OF THE 22ND INTERNATIONAL ESAFORM CONFERENCE ON MATERIAL FORMING: ESAFORM 2019. AIP Publishing, 2019. http://dx.doi.org/10.1063/1.5112711.

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Petrov, M. A., D. A. Romashov, and V. V. Isakov. "Application of Contactless Methods for Deformation Assessment During Erichsen Cupping Test of Aluminium Sheet Samples." In 33rd International Conference on Computer Graphics and Vision. Keldysh Institute of Applied Mathematics, 2023. http://dx.doi.org/10.20948/graphicon-2023-274-284.

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In the present study, non-contact techniques for estimating the deformation of a sheet specimen of aluminium alloy AA5051 (AMg2) subjected to Erichsen cupping test are considered. It is shown that it is possible to get reliable information by numerical simulation, however, for the case when the coefficients of the yield and fracture equations of the material are well-known and validated. This requires the application of confirmatory techniques based on the results of real experiments, for example, through optical 3D-scanning. The realization of the techniques requires the observance of the peculiarities of working with them in terms of specimen preparation. The combined technique of speckle interferometry and digital image correlation allows estimating deformations on the outer linear surfaces, but does not indicate deformations of products with curved surfaces and inside the specimen, which requires an additional determination of deformation fields by numerical simulation.

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JIN, Jianchen. "Correlation between sheet formability and joint strength of A1050-O/SPCC butt laser welded tailored blanks." In Material Forming. Materials Research Forum LLC, 2024. http://dx.doi.org/10.21741/9781644903131-149.

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Abstract. Laser-welded tailored blanks are useful for lightweight automobiles. However, three major problems remain unresolved: low joint strength, low formability, and galvanic corrosion. Although considerable research has been conducted on the lap form, the studies on the use of lasers to weld dissimilar metals in the butt form are scarce. For practical applications of dissimilar metal tailored blanks, formability must also be investigated. In this study, Japan Industrial Standard A1050-O aluminum and SPCC steel were welded as dissimilar metal tailored blanks and used for Erichsen, flat punch stretch, and hole expansion tests. Welded materials with different joint strengths were produced to investigate the correlation between joint strength and formability. Two patterns of fracture owing to differences in joint strength were observed during the flat punch stretch test. The results of the formability test confirmed that the formability improved with an increase in the joint strength.

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Mao, Bo, Xing Zhang, Yiliang Liao, and Bin Li. "Improving Room Temperature-Stretch Formability of Magnesium Alloys by Laser Shock Peening." In ASME 2019 14th International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/msec2019-2910.

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Abstract The applications of magnesium (Mg) and their alloys are often restricted by their poor formability at room temperature. Several strategies have been developed in recent years to enhance the formability of Mg alloys, such as grain refinement and texture weakening, either by alloying or processing. Laser shock peening (LSP) is an advanced laser-based surface processing method which has been utilized improve the surface hardness, fatigue performance, and corrosion resistance of Mg alloys. Recent studies show that LSP can bring significant texture weakening and grain refinement effect in Mg alloy, indicating its potential capability of enhancing the formability of Mg alloys. This research is to explore the applicability of LSP to improve the room temperature-stretch formability of Mg alloys. LSP experiments are carried out on an AZ31B Mg alloys. The microstructure before and after LSP are characterized by optical microscopy (OM) and electron backscattered diffraction (EBSD) microscopy. Erichsen tests are carried out to evaluate the stretch formability of Mg alloys. The results show that LSP can bring texture weakening and grain refinement effect simultaneously, resulting in the improved room temperature-stretch formability of Mg alloys.

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