Results 31 to 40 of about 11,703 (260)

Mode I and mixed mode fracture of polysilicon for MEMS [PDF]

Fatigue & Fracture of Engineering Materials & Structures, 2007
ABSTRACTAn experimental study was carried out to investigate the local and effective fracture behaviour of polycrystalline silicon for microelectromechanical systems (MEMS). The apparent mode I critical stress intensity factor was determined from MEMS‐scale tension specimens containing atomically sharp edge pre‐cracks, while local deformation fields ...
S. W. CHO, K. JONNALAGADDA, I. CHASIOTIS
openaire   +1 more source

Solid‐State Diffusion and Intermetallic Phase Formation in Roll‐Bonded Mg–Zn Composites With Kirigami‐Patterned Inlay

Advanced Engineering Materials, EarlyView.
Mg–Zn composites with a thickness of 0.21 mm were fabricated using roll bonding of a kirigami‐patterned Mg alloy inlay within a Zn matrix. Thermal activation following this process led to the formation of tailored intermetallic structures, which provided the composite with enhanced flexural strength.
Yaroslav Frolov, Oleksandr Bobukh, Christian Klose, Florian Nürnberger, Hans Jürgen Maier   +4 more
wiley   +1 more source

Compressive mechanical properties and failure modes of Zr-based bulk metallic glass composites containing tungsten springs

Materials & Design, 2018
A novel kind of Zr-based bulk metallic glass composites (BMGCs) reinforced with tailored volume fractions of tungsten springs were designed. The effect of tungsten springs on the compressive mechanical properties and failure modes of the BMGCs was ...
S. Chen, L. Zhang, H.M. Fu, Z.K. Li, Z.W. Zhu, H. Li, H.W. Zhang, A.M. Wang, Y.D. Wang, H.F. Zhang   +9 more
doaj   +1 more source

Mixed-Mode Fracture Toughness of Sialon.

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A, 1994
The characteristics of mixed-mode fracture toughness in sialon were investigated by flexural tests using specimens with controlled surface flaws. The experimental results show that the obtained relationships between KI and KII at fractures are consistent with the theoretical ones derived through a modified energy-release-rate theory or Shetty's ...
Machida, Takashi, Miyata, Hiroshi, Nakakado, Kimiaki   +2 more
openaire   +2 more sources

Phase Field Failure Modeling: Brittle‐Ductile Dual‐Phase Microstructures under Compressive Loading

Advanced Engineering Materials, EarlyView.
The approach by Amor and the approach by Miehe and Zhang for asymmetric damage behavior in the phase field method for fracture are compared regarding their fitness for microcrack‐based failure modeling. The comparison is performed for the case of a dual‐phase microstructure with a brittle and a ductile constituent.
Jakob Huber, Jan Torgersen, Ewald Werner
wiley   +1 more source

Experimental Study on the Fracture Toughness of Granite Affected by Coupled Mechanical-Thermo

Lithosphere, 2022
Hot dry rock geothermal energy is deep geological energy. Its ability to resist fracture is an important basis for effective reconstruction and scientific evaluation of the stability of geothermal reservoirs.
Gan Feng, Chen-Bo Liu, Ji-Lan Wang, Ye Tao, Zhi-Pan Duan, Wei-Ning Xiang   +5 more
doaj   +1 more source

Karl Popper and the Mechanisms of Hydrogen Embrittlement

Advanced Engineering Materials, EarlyView.
Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley   +1 more source

Is an Apple an Orange? A Large Language Model Benchmark for Candidate Term Extraction and Subclass Decisions Against Upper Ontologies in Engineering and Materials Science

Advanced Engineering Materials, EarlyView.
Building machine‐readable vocabularies for materials science is slow, expert‐driven work. This study benchmarks 13 large language models on two of its first steps: finding candidate terms in engineering articles and deciding where they belong in a class hierarchy.
Thomas Bjarsch, Maximilian Holland, Klaus Drechsler, Johannes Schilp   +3 more
wiley   +1 more source

Mixed-Mode I/II Fracture

AbstractAs the inherent nature of rocks, natural cracks play a remarkable part in controlling the mechanics and permeability responses in rock masses. Due to the intense stress concentration at their neighborhoods, these cracks are extensively recognized as the initial locations for the initiation, extension, and convergence of cracking.
Yu Zhao, Kun Zheng, Chaolin Wang
openaire   +1 more source

Microstructure Evolution of a VMnFeCoNi High‐Entropy Alloy After Synthesis, Swaging, and Annealing

Advanced Engineering Materials, EarlyView.
The synthesis and processing (rotary swaging and annealing) of the novel VMnFeCoNi alloy is investigated, alongside the estimation of the grain size effect on hardness. Analysis of a wide grain size range of recrystallized microstructures (12–210 µm) reveals a low annealing twin density.
Aditya Srinivasan Tirunilai, Zeki Ayrildi, Buse Şen, Maik Rajkowski, Mathias Redondo Garcia, Markus Stricker, Guillaume Laplanche   +6 more
wiley   +1 more source