Compressive properties of Ti–6Al–4V auxetic mesh structures made by electron beam melting

Yang, Li; Harrysson, Ola; West, Harvey; Cormier, Denis

doi:10.1016/j.actamat.2012.03.015

Cited by 196 publications

(112 citation statements)

References 24 publications

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“…The unit cell of the 3D re-entrant lattice auxetic structure used in this study is shown in Figure 1(a) [10,11]. This auxetic structure is an orthotropic structure with directions x and y exhibiting identical properties due to the symmetry.…”

Section: Structural Designsmentioning

confidence: 99%

“…The Poisson's ratio values are expected to have a significant effect on the mechanical properties of the re-entrant auxetic structures. With greater negative Poisson's ratio values, the modulus and strength of the structures will also become greater [11,12]. In the current study, two configurations were designed for the re-entrant auxetic structure with significantly different Poisson's ratios, as shown in Table 1.…”

Section: Structural Designsmentioning

confidence: 99%

See 1 more Smart Citation

A Comparison of Bending Properties for Cellular Core Sandwich Panels

Yang¹,

Harrysson²,

West³

et al. 2013

MSA

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In this study, various sandwich panel structures with different reticulate lattice core geometries were designed and then fabricated in titanium via the electron beam melting (EBM) process. Bending tests were performed on the titanium samples, and mechanical properties such as modulus, bending strength, and energy absorption were evaluated. Different failure mechanisms were observed, and it was found that sandwich structures with auxetic cores exhibited more homogeneous deflection and bending compliance compared with other structures. It was also demonstrated that properties of auxetic sandwich structures can be tailored using different cell structure geometries to suit the needs of a given design application. Furthermore, it was found that other 3D cellular sandwich structures can also exhibit high stiffness and strength, which is desirable in potential applications.

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Section: Structural Designsmentioning

confidence: 99%

Section: Structural Designsmentioning

confidence: 99%

A Comparison of Bending Properties for Cellular Core Sandwich Panels

Yang¹,

Harrysson²,

West³

et al. 2013

MSA

Self Cite

View full text Add to dashboard Cite

show abstract

“…Arcam provides a variety of EBM machines for processing Ti and Ti alloys, including Arcam A1, A2, S12 and S400, and it dominates the market for the time being [47][48][49][50][51][52][53][54][55][56][57][58][59][60][61][62][63][64][65][66]. Figure 3 provides a schematic graph to show the working principle of the EBM [66]; key machine parameters and working conditions are summarised into …”

Section: Electron Beam Melting (Ebm)mentioning

confidence: 99%

An Overview of Densification, Microstructure and Mechanical Property of Additively Manufactured Ti-6Al-4V — Comparison among Selective Laser Melting, Electron Beam Melting, Laser Metal Deposition and Selective Laser Sintering, and with Conventional Powder

Yan¹,

Yu²

2015

Sintering Techniques of Materials

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“…By fitting the line on the data with zero intercept, the average Young's modulus calculated from the experimental observations and FEA was 1.493 GPa and 1.389 GPa respectively, which shows good agreement. It should be noted that the theoretical models of effective modulus of the same unit cell available in literature [3,5] based on elastic theory give lower effective modulus when calculated using the dimensions of the unit cell used in this work, because these models do not cater for the associated geometry on both sides of the structure. It can be noticed from Fig.…”

Section: Resultsmentioning

confidence: 99%

“…Over the decades researchers have put efforts to the design and development of auxetic structures [3]. Several analytical and simulation models are available for a variety of unit cells that exhibit auxetic behaviour [4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Mechanical properties in tensile loading of H13 re-entrant honeycomb auxetic structure manufactured by direct metal deposition

Khan

Masood

Cottam

2015

MATEC Web of Conferences

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Abstract. Auxetic materials and structures have a negative Poisson's ratio. When a tensile load is applied, they become thicker in lateral direction and vice versa. This paper presents a study on the mechanical behavior of a metallic re-entrant honeycomb auxetic structure manufactured by laser assisted Direct Metal Deposition (DMD) additive manufacturing technology. Effective modulus of the auxetic structure was estimated in tensile loading. The results of finite element analysis (FEA) were validated experimentally and show good agreement. Poisson's ratio of the given structure was also estimated by FEA and validated with the analytical equation. Results show that direct metal deposition is an effective technique for producing intricate auxetic structures for various engineering applications.

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Compressive properties of Ti–6Al–4V auxetic mesh structures made by electron beam melting

Cited by 196 publications

References 24 publications

A Comparison of Bending Properties for Cellular Core Sandwich Panels

A Comparison of Bending Properties for Cellular Core Sandwich Panels

An Overview of Densification, Microstructure and Mechanical Property of Additively Manufactured Ti-6Al-4V — Comparison among Selective Laser Melting, Electron Beam Melting, Laser Metal Deposition and Selective Laser Sintering, and with Conventional Powder

Mechanical properties in tensile loading of H13 re-entrant honeycomb auxetic structure manufactured by direct metal deposition

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