Analysis of Deep Drawing Process for Stainless Steel Micro-Channel Array

Chen, Tsung-Chia; Lin, Jiang-Cheng; Lee, Rong-Mao

doi:10.3390/ma10040423

Cited by 3 publications

(3 citation statements)

References 23 publications

(26 reference statements)

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“…The updated degenerated shell finite element analysis, Lagrangian formulation, and the r-minimum rule investigates the major link between punch load and stroke, strain, and stress distributions, thickness fluctuations, and depth variations of individual micro-channel sections. The depth and width of a single micro-channel are 0.5 mm, 0.75 mm, respectively, and a micro-channel array is effectively formed [21]. Fractures were most usually seen in the micro-channel bottom's fillet corner.…”

Section: Research Workmentioning

confidence: 99%

Micro Forming and its Application: A Critical Review

Tiwari¹,

Kakandikar²,

Kulkarni³

2022

J. Engg. Res. & Sci.

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In terms of manufacturing methods/processes, micro-manufacturing has received a lot of attention around the world. Micro-forming is one of the most widely used micro-manufacturing techniques. The micro forming is based on the properties of materials based on the process of shaping parts and object by mechanical deformation. Many efforts had been focused on micro-forming, in particular the deep drawing process, because of the method's ability to produce an extensive variety of products, particularly in its conventional macro-process. This method is used to create the majority of everyday items. Although efforts were made to develop micro-forming for industrial use, the technique was deemed to be insufficiently advanced. Much development effort was required, in particular, to design a completely computerized high-extent production micro-forming machine that is dependable and ready to perform always in terms of procedures, material handling, and tooling to assure effective micro-product production. Micro forming, which is discussed in this work, is also one of the often-used micro-forming methods in deforming procedures. Finally, in addition to continuing to improve micro forming, this study aims to investigate the essential methods of the Limit dome height test, Nakajima test, M K Model test, and deep drawing processes and their major concerns in a systematic manner.

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Section: Research Workmentioning

confidence: 99%

Micro Forming and its Application: A Critical Review

Tiwari¹,

Kakandikar²,

Kulkarni³

2022

J. Engg. Res. & Sci.

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“…The corresponding microscopic details are produced from metallic materials. Micro forming [4]- [6] can provide near-net shape properties, improved formation of complex geometries, the ability to produce miniature parts with relatively high stiffness and strength, and the ability to use a wide variety of materials. Furthermore, in general, the molding process provides the high-volume production of micro components required today.…”

Section: Introductionmentioning

confidence: 99%

The Investigations on Formability of Tantalum RO5200 Thin Foils: Bio-Material.

Kulkarni

Kakandikar

2023

IOP Conf. Ser.: Mater. Sci. Eng.

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Tantalum RO5200 (TaRO5200) is an excellent and new emerging Bio-material with wide applications. The most important property of TaRO5200 is Osseointegration which helps in integration of direct structural and functional connection between living bone and the surface. The process of forming in at actual is a plastic deformation where in the material is transforming in permanently is some shape without occurrence of any type of defect of failure. Few different types of failure enlisted are local necking, wrinkling, earing etc. In recent days transforming from macro level to micro level is now trending part of life. The most difficult part in moving towards micro level forming which means forming sheets under 100 microns thickness, is control over process. Hence this gives significance and rise for the investigations over forming at micro level and prediction of mechanical and formability properties at micro level. This research work posited in this paper focusses on the plotting of Forming limit curve (FLC) which is one of the methods to investigate formability of ultra-thin foil of TaRO5200 with sheet thickness 80 microns (μm). The experiments performed for FLC plotting were based on the Nakkajima test following the ASTM 2218-14 standards. The FLCs are plotted experimentally and via numerical simulation as well which in comparison shows a good agreement. The variance obtained between experimental and numerical simulation is up to 15%. Which in another words can be stated as numerical simulation is 15% safer in design than the experimental work. The novelty of the work lies in testing of the bio material and defining FLC by performing experiments via newly designed tool for the specific sheet thickness of 80 μm following the ASTM standards. Microstructural study is also performed on the specimen prior and after forming test to analyse and understand the physics along with mechanism of the material in test. The material behaviour is also explained in the microstructural study section.

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“…To a certain extent, the material fails and fissures occur [13]. The formability depends on the material and the thickness of the plate [20][21][22][23][24], with the resulting channel shape being characterized by a shape factor that may be incorporated into a flow network model, as reported by Xu et al [25]. It is also possible to combine the geometric shape of the channel cross section with an analytical performance model, as shown by Peng et al [13].…”

Section: Introductionmentioning

confidence: 99%

An Engineering Toolbox for the Evaluation of Metallic Flow Field Plates

et al. 2019

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Metallic flow field plates, also called bipolar plates, are an important component of fuel cell stacks, electrolyzers, hydrogen purification and compression stacks. The manufacturing of these plates by means of stamping or hydroforming is highly suitable for mass production. In this work, a toolbox is created that is suitable for a screening process of different flow field design variants. For this purpose, the geometry and computational mesh are generated in an automated manner. Basic building blocks are combined using the open source software SALOME, and these allow for the construction of a large variant of serpentine-like flow field structures. These geometric variants are evaluated through computational fluid dynamics (CFD) simulations with the open source software OpenFOAM. The overall procedure allows for the screening of more than 100 variants within one week using a standard desktop computer. The performance of the flow fields is evaluated on the basis of two parameters: the overall pressure difference across the plate and the relative difference of the hydrogen concentration at the outlet of the channels. The results of such a screening first provide information about optimum channel geometry and the best choice of the general flow field layout. Such results are important at the beginning of the design process, as the channel geometry has an influence on the selection of the metal for deep drawing or hydroforming processes.

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Analysis of Deep Drawing Process for Stainless Steel Micro-Channel Array

Cited by 3 publications

References 23 publications

Micro Forming and its Application: A Critical Review

Micro Forming and its Application: A Critical Review

The Investigations on Formability of Tantalum RO5200 Thin Foils: Bio-Material.

An Engineering Toolbox for the Evaluation of Metallic Flow Field Plates

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