Zobrazeno 1 - 10
of 189
pro vyhledávání: '"Alexander Hartmaier"'
Publikováno v:
Materials, Vol 17, Iss 16, p 3938 (2024)
Indentation is a versatile method to assess the hardness of different materials along with their elastic properties. Recently, powerful approaches have been developed to determine further material properties, like yield strength, ultimate tensile str
Externí odkaz:
https://doaj.org/article/17efe4b64bde43f7946af0414abe29ce
Autor:
Meichen Pan, Xin Chen, Meiling He, Yi Kong, Yong Du, Alexander Hartmaier, Xiaoyu Zheng, Yuling Liu
Publikováno v:
Materials, Vol 17, Iss 13, p 3210 (2024)
As a new type of high-performance material, gradient structural steel is widely used in engineering fields due to its unique microstructure and excellent mechanical properties. For the prevalent fatigue failure problem, the rate of change in the loca
Externí odkaz:
https://doaj.org/article/b5ec38f703234d0a843ed6fb508f8130
Autor:
Ronak Shoghi, Alexander Hartmaier
Publikováno v:
Machine Learning: Science and Technology, Vol 5, Iss 2, p 025008 (2024)
Machine learning (ML) methods have emerged as promising tools for generating constitutive models directly from mechanical data. Constitutive models are fundamental in describing and predicting the mechanical behavior of materials under arbitrary load
Externí odkaz:
https://doaj.org/article/c91944f2708b48c580dcc6b4ab2b9e76
Publikováno v:
Materials & Design, Vol 223, Iss , Pp 111250- (2022)
While the deformation behavior of grain boundaries has a strong impact on the mechanical response of polycrystalline materials, investigating the coupled thermal–mechanical properties of grain boundaries in their real formats is crucial for enhanci
Externí odkaz:
https://doaj.org/article/4b5b96a1c90f4b14b3a7ac7f9f002012
Autor:
Abhishek Biswas, Dzhem Kurtulan, Timothy Ngeru, Abril Azócar Guzmán, Stefanie Hanke, Alexander Hartmaier
Publikováno v:
Materials, Vol 16, Iss 4, p 1367 (2023)
Low-nickel austenitic steel is subjected to high-pressure torsion fatigue (HPTF) loading, where a constant axial compression is overlaid with a cyclic torsion. The focus of this work lies on investigating whether isotropic J2 plasticity or crystal pl
Externí odkaz:
https://doaj.org/article/1a7bb2b4bc7042518be4f74ed50dd99f
Autor:
Ronak Shoghi, Alexander Hartmaier
Publikováno v:
Frontiers in Materials, Vol 9 (2022)
Trained machine learning (ML) algorithms can serve as numerically efficient surrogate models of sophisticated but numerically expensive constitutive models of material behavior. In the field of plasticity, ML yield functions have been proposed that s
Externí odkaz:
https://doaj.org/article/9c2c149ee3d54068aeb7fcb67b54e9de
Publikováno v:
International Journal of Extreme Manufacturing, Vol 5, Iss 2, p 022001 (2023)
Ultra-precision diamond cutting is a promising machining technique for realizing ultra-smooth surface of different kinds of materials. While fundamental understanding of the impact of workpiece material properties on cutting mechanisms is crucial for
Externí odkaz:
https://doaj.org/article/ec1b96289a214188ab3574ff6f3412d5
Autor:
Aravindh Nammalvar Raja Rajan, Marcel Krochmal, Thomas Wegener, Abhishek Biswas, Alexander Hartmaier, Thomas Niendorf, Ghazal Moeini
Publikováno v:
Materials, Vol 15, Iss 16, p 5562 (2022)
The unique microstructure of the alloy AlSi10Mg produced by the laser-based powder bed fusion of metals (PBF-LB/M) provides high-strength and high-strain-hardening capabilities of the material. The microstructure and mechanical properties of 3D-print
Externí odkaz:
https://doaj.org/article/42958f9db37449968a9facda793eb16f
Publikováno v:
Materials & Design, Vol 197, Iss , Pp 109223- (2021)
The interplay between ductile and brittle deformation modes in hard brittle materials exhibits a strong size effect. In the present work, indentation depth-dependent deformation mechanisms of single-crystal 3C-SiC under Berkovich nanoindentation are
Externí odkaz:
https://doaj.org/article/2c8f36bfd69d4bdd8fe893cdd6163558
Publikováno v:
Crystals, Vol 11, Iss 12, p 1473 (2021)
The effective mechanical properties of a polycrystal depend directly on the single-crystal properties of each grain and its crystallographic orientation with respect to the load axis. While the micromechanical approach has been used quite extensively
Externí odkaz:
https://doaj.org/article/89e69f2423e949aaa1eb3bd8ee2103fd