Publications de Wei-Neng Hsu | EPFL Graph Search

The interplay between deformation mechanisms in austenitic 304 steel during uniaxial and equibiaxial loading

Helena Van Swygenhoven, Efthymios Polatidis, Wei-Neng Hsu

The preferred deformation mechanisms with respect to the load path are studied in a medium stacking fault energy 304 austenitic stainless steel that exhibits both transformation induced plasticity and twinning induced plasticity. In situ neutron diffractio ...

2019

A High Resolution Digital Image Correlation Study under Multiaxial Loading

Helena Van Swygenhoven, Efthymios Polatidis, Wei-Neng Hsu

In this study, a miniaturized cruciform-shaped sample geometry which allows reaching high plastic strain under equibiaxial loading with reduced thickness at the test section is presented. The thinning method results in excellent surface quality that can be ...

SPRINGER2019

Deformation-induced martensitic transformation under multiaxial loading

Wei-Neng Hsu

The deformation-induced martensitic transformation observed in specific materials can enhance their mechanical properties or result in functional properties. For example, the transformation induced plasticity (TRIP) effect results in a good combination of ...

EPFL2019

Deformation and degradation of superelastic NiTi under multiaxial loading

Helena Van Swygenhoven, Steven Van Petegem, Wei-Neng Hsu, Nicola Casati, Efthymios Polatidis

The degradation of the superelastic properties of a commercial NiTi alloy is studied during uniaxial, biaxial and load-path-change cycling performed in-situ with synchrotron X-ray diffraction. Careful examination of the diffraction pattern during uniaxial ...

2019

Load path change on superelastic NiTi alloys: In situ synchrotron XRD and SEM DIC

Helena Van Swygenhoven, Steven Van Petegem, Nicola Casati, Efthymios Polatidis, Wei-Neng Hsu

2018

Suppressed martensitic transformation under biaxial loading in low stacking fault energy metastable austenitic steels

Helena Van Swygenhoven, Efthymios Polatidis, Wei-Neng Hsu

2018