Results 21 to 30 of about 148,804 (260)

Effect of Fe-Bearing Phases on the Mechanical Properties and Fracture Mechanism of Al–2wt.%Cu–1.5wt.%Mn (Mg,Zn) Non-Heat Treatable Sheet Alloy

Metals, 2023
The effects of Fe-bearing phases on the structure, mechanical properties, and fracture mechanism of a non-heat-treatable model sheet alloy (wt.%: Al–2%Cu–1.5%Mn(-Mg,Zn)), designed for Al20Cu2Mn3 dispersoids, was investigated.
Nikolay Belov, Torgom Akopyan, Kirill Tsydenov, Stanislav Cherkasov, Natalia Avxentieva   +4 more
doaj   +1 more source

Fracture Kinetics and Mechanisms of Ultrafine-Grained Materials during Fatigue Tests in the Low-Cycle Fatigue Region

Metals, 2023
In this paper, the fracture kinetics and mechanisms in the low-cycle fatigue region were analyzed for different ultrafine-grained (UFG) materials with body-centered cubic (bcc), hexagonal close-packed (hcp) and face-centered cubic (fcc) lattices.
Gennadiy V. Klevtsov, Ruslan Z. Valiev, Natal’ya A. Klevtsova, Maksim N. Tyurkov, Irina N. Pigaleva, Denis A. Aksenov   +5 more
doaj   +1 more source

Fracture mechanics principles

Dental Materials, 1995
The principles of linear elastic fracture mechanics (LEFM) were developed in the 1950s by George Irwin (1957). This work was based on previous investigations of Griffith (1920) and Orowan (1944). Irwin (1957) demonstrated that a crack shape in a particular location with respect to the loading geometry had a stress intensity associated with it.
Department of Materials Science and Engineering, University of Florida, Gainesville, Florida, USA ( host institution ), Mecholsky, John J.   +1 more
openaire   +3 more sources

An Analytical Model for Rock Cutting with a Chisel Pick of the Cutter Suction Dredger

Journal of Marine Science and Engineering, 2020
Cutter suction dredgers are important pieces of rock excavation equipment in port and waterway construction. It is valuable but difficult to properly estimate the cutting force on the chisel pick of the cutter suction dredger.
Yiping Ouyang, Qi Yang, Xinquan Chen, Yongfu Xu   +3 more
doaj   +1 more source

Uniaxial Compressive Mechanical Behavior of Coals with Different Joint Spacing and Angles: A DEM Numerical Simulation Study

Applied Sciences
Coal rupture in coal mining is prone to cause rockburst dynamic hazards. To investigate the effect of joint structure characteristics on the mechanical behavior and the fracture mechanism of coal sample.
Herui Zhang, Enyuan Wang, Jianhua Yue, Bin Miao, Danyang Xi, Xiaozhen Teng   +5 more
doaj   +1 more source

Size Effect on Tensile Properties and Fracture Mechanism of Micro-Rolled Ultra-Thin Cu/Al Composite Sheet

Metals
In this study, a laboratory-precision four-high micro-rolling mill was employed to investigate the influence of grain size on the deformation behavior and fracture mechanism of a micro-rolled Cu/Al composite ultra-thin sheet.
Pengkun Zhang, Hongmei Zhang, Guoao Yu, Zhengyi Jiang   +3 more
doaj   +1 more source

Research on mechanism and practice of expansion‐induced fracturing and pressure relief in deep coal mines

Energy Science & Engineering
A nonexplosive expansion method is proposed to apply in the field of rock burst prevention and control in coal mine. The principle of the expansive agent reaction was analysed and specimens with one hole and two holes were tested with and without axial ...
Shitan Gu, Zhiyao Liu, Wenshuai Li, Bangyou Jiang, Changpeng Chen   +4 more
doaj   +1 more source

Fatigue analysis of brazing structures with fin-plate-side bar in Liquefied Natural Gas (LNG) heat exchangers under cryogenic conditions

Science and Technology for Energy Transition, 2023
The purpose of this study is to evaluate the fatigue life of heat exchangers used for Liquefied Natural Gas (LNG) and to ensure its structural safety, the alternating stress of brazing structures under cryogenic conditions was analyzed with a Finite ...
Ma Hongqiang, Jia Jiwei, Liu Yu, Luo Xinmei, Hou Caiqin, Wang Gang   +5 more
doaj   +1 more source

Microbiome−host proteostasis crosstalk—An emerging perspective on mechanisms and interventions toward healthy longevity

FEBS Letters, EarlyView.
Proteostasis and the gut microbiota play a key role in shaping host physiology. Microbiota‐derived metabolites, vitamins, and RNA modulate host proteostasis. Findings from model systems, including C. elegans, indicate microbes can either stabilize or disrupt host proteostasis.
Abhishek Anil Dubey, Maria Ermolaeva
wiley   +1 more source

Network divergence analysis identifies adaptive gene modules and two orthogonal vulnerability axes in pancreatic cancer

Molecular Oncology, EarlyView.
Tumors contain diverse cellular states whose behavior is shaped by context‐dependent gene coordination. By comparing gene–gene relationships across biological contexts, we identify adaptive transcriptional modules that reorganize into distinct vulnerability axes.
Brian Nelson, Lyanne Delgado‐Coka, Natalia Marchenko, Luisa F. Escobar‐Hoyos, Kenneth R. Shroyer, Alisa Yurovsky, Trey Ideker, Gábor Balázsi, Thomas MacCarthy, Scott Powers   +9 more
wiley   +1 more source