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Nelissen, W. E.D. (author), Ayas, C. (author), Tekõglu, C. (author)
The Kagome structure has been shown to be a highly suited micro-architecture for adaptive lattice materials, in which selected lattice members are replaced by actuators aiming to create shape morphing structures. It is the combination of in-plane isotropy, high stiffness and low energy requirement for actuation that makes the planar Kagome...
journal article 2019
document
Munro, D.P. (author), Ayas, C. (author), Langelaar, M. (author), van Keulen, A. (author)
We study linearity assumptions in the transient macroscale mechanical aspect of additive manufacturing (AM) process simulation. Linearity assumptions are often resorted to in combination with calibrated inelastic deformation components to arrive at computationally tractable yet reasonably accurate AM process models. We point out that...
journal article 2019
document
Ahmadi, S.M. (author), Ashok Kumar Jain, R. K. (author), Zadpoor, A.A. (author), Ayas, C. (author), Popovich, V. (author)
Titanium and its alloys such as Ti6Al4V play a major role in the medical industry as bone implants. Nowadays, by the aid of additive manufacturing (AM), it is possible to manufacture porous complex structures which mimic human bone. However, AM parts are near net shape and post processing may be needed to improve their mechanical properties....
journal article 2018
document
van de Ven, E.A. (author), Maas, Robert (author), Ayas, C. (author), Langelaar, M. (author), van Keulen, A. (author)
Additive manufacturing enables the nearly uncompromised production of optimized topologies. However, due to the overhang limitation, some designs require a large number of supporting structures to enable manufacturing. Because these supports are costly to build and difficult to remove, it is desirable to find alternative designs that do not...
journal article 2018
document
Yang, Y. (author), Knol, Marius (author), van Keulen, A. (author), Ayas, C. (author)
Selective laser melting (SLM) wherein a metal part is built in a layer-by-layer manner in a powder bed is a promising and versatile way for manufacturing components with complex geometry. However, components built by SLM suffer from substantial deformation of the part and residual stresses. Residual stresses arise due to temperature gradients...
journal article 2018
document
Ranjan, R. (author), Ayas, C. (author), Langelaar, M. (author), van Keulen, A. (author)
conference paper 2018
document
Yang, Y. (author), Ayas, C. (author)
Selective laser melting (SLM) is a powder based additive manufacturing technique suitable for producing high precision metal parts. However, distortions and residual stresses within products arise during SLM because of the high temperature gradients created by the laser heating. Residual stresses limit the load resistance of the product and...
conference paper 2017
document
Yang, Y. (author), Ayas, C. (author), van Keulen, A. (author)
abstract 2017
document
Yang, Y. (author), Ayas, C. (author), van Keulen, A. (author)
abstract 2017
document
Yang, Y. (author), Ayas, C. (author)
The Selective laser melting (SLM) is a powder based additive manufacturing (AM) method to produce high density metal parts with complex topology. However, part distortions and accompanying residual stresses deteriorates the mechanical reliability of SLM products. Modelling of the SLM process is anticipated to be instrumental for understanding...
conference paper 2017
document
van de Ven, E.A. (author), Ayas, C. (author), Langelaar, M. (author), Maas, Robert (author), van Keulen, A. (author)
abstract 2017
document
Munro, D.P. (author), Ayas, C. (author), Langelaar, M. (author), van Keulen, A. (author)
abstract 2017
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