Results 71 to 80 of about 208,400 (295)

Cohesion and Internal Friction Angle of Basalts in Jeju Island

Journal of the Korean Geotechnical Society, 2015
Volcanic rocks in Jeju Island indicate the differences in geological and mechanical characteristics from region to region, and have vesicular structure caused by various environmental factors. In this study, triaxial compressive strength tests were conducted for intact rocks sampled in northeastern onshore and offshore, southeastern offshore and ...
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

Geotechnical Maps for Angle of Internal Friction of An-Najaf Soil-Iraq Using GIS

Wasit Journal of Engineering Sciences, 2021
The angle of internal friction value (φ) is used to describe the soil resistance to shear failure. It is estimated experimentally either from Direct Shear Test or Triaxial Stress Tests.
Sohaib Kareem Al-Mamoori, Sabreen L. Kareem, Laheab A. Al-Maliki, Khaled El-Tawil   +3 more
doaj   +1 more source

Nonlinear criteria and the influence of the average principal stress on rocks destruction [PDF]

, 2018
Purpose. Consider possible series methods of Mohr-Coulomb nonlinear criterion that takes into account stresses in the plane of fracture. Investigate the influence of the average principal stress on rocks destruction when cylinder modeling under axial and
Olovyannyy, A
core   +1 more source

Hydrogen‐Assisted Fracture of Iron‐Based Fe–Ni–Al Alloys

Advanced Engineering Materials, EarlyView.
Principal relations and fracture mechanisms of single‐phase and precipitate‐strengthened Fe–Ni–Al alloys subjected to prior electrochemical hydrogen charging are identified. The mechanisms of hydrogen effect on strength and microhardness are discussed, including hydrogen‐induced increase in microhardness and the role of hydrogen in fracture behavior ...
Nataliya Yadzhak, Olha Zvirko, Rostyslav Leshchak, Hryhoriy Nykyforchyn   +3 more
wiley   +1 more source

Angle of Friction in Reinforced Earth [PDF]

Engineering and Technology Journal, 2005
The present work took care of the frictional resistance developed between the fill material and mats used as soil reinforcement which are made of locally natural materials . These natural materials are locally available plant organs , which are cheap and
Awf Al - Kaisi, Zeena Abbawi
doaj   +1 more source

Stretching the Printability Metric in Direct‐Ink Writing with Highly Extensible Yield‐Stress Fluids

Advanced Functional Materials, EarlyView.
This study introduces “drawability” as a new metric for assessing printability in direct‐ink writing, focusing on gap‐spanning performance and speed robustness. By designing yield‐stress fluids with high extensibility, we demonstrate that extensional strain‐to‐break significantly enhances printability.
Chaimongkol Saengow, Samya Sen, Joaquin Yus, Eliza E. Lovrich, Amanda G. Hoika, Kelly M. Chang, Arielle A. Pfeil, Nellie Haug, Amy J. Wagoner Johnson, Randy H. Ewoldt   +9 more
wiley   +1 more source

Effect of repeated freeze-thaw cycles on mechanical properties of clay

Heliyon
To investigate the variation in the mechanical properties of clay under freeze-thaw cycles (FTCs), a series of experiments were conducted in the laboratory.
Haiqiang Jiang, Hongwei Han, Xingchao Liu, Enliang Wang, Qiang Fu, Jing Luo   +5 more
doaj   +1 more source

Discrete modelling of capillary mechanisms in multi-phase granular media [PDF]

, 2009
A numerical study of multi-phase granular materials based upon micro-mechanical modelling is proposed. Discrete element simulations are used to investigate capillary induced effects on the friction properties of a granular assembly in the pendular regime.
Chareyre, B., Darve, F., Nicot, Frédéric, Scholtes, L.   +3 more
core   +4 more sources

Meta‐Rod Mechanical Metamaterials With Programmable Reconfiguration

Advanced Functional Materials, EarlyView.
Existing mechanical metamaterials achieve programmable large deformations in planar square or cubic configurations, restricted by required complex boundary conditions. This research proposes a 1D metamaterial, Meta‐rod, with linear, bending, twisting, area, and volume deformation modes.
Atharva Pande, Lyes Kadem, Hang Xu
wiley   +1 more source