An experimental study on failure mechanical behavior and cracking mechanism of rectangular solid sandstone containing two non-coplanar fissures under conventional triaxial compression Author links open overlay panel Sheng-Qi Yang Wen-Ling Tian Xiang-Ru Liu Yan-Hua Huang Jing Yang
An investigation of the fracture behavior of coarse This article presents the results of an experimental study of the effects of heat input and temperature on the crack-tip opening displacement (CTOD) in the coarse-grained heat-affected zones (CG HAZs) that are generally considered to be the weakest sections of fusion welded structures. The study focuses primarily on the fracture mechanisms in CG HAZs in submerged-arc-welds (SAWs) between A707
Hydrogen ingress into a metal is a persistent source of embrittlement. Fracture surfaces are often intergranular, suggesting favorable cleave crack growth along grain boundaries (GBs) as one driver for embrittlement. Here, atomistic simulations are used to investigate the effects of segregated hydrogen on the behavior of cracks along various symmetric tilt grain boundaries in fcc Nickel.
Brittle-fracture simulations of curved cleavage cracks in Nov 10, 2020 · The aim of the current study is to improve our understanding of the brittle cleavage fracture of bcc metals through modeling. The brittle fracture consists of a series of atomic-bond-breaking events, although the plasticity associated with the cleavage crack propagation is too complex to be treated analytically.
CLEAVAGE CRACKING RESISTANCE OF HIGH ANGLE resistance and fracture behavior of polycrystals has been of continued interest. In an early fundamental experimental study of the processes that lead to transitions of fracture from ductile to brittle forms in polycrystalline steel, Hahn, et al. (1959) noted that with
resistance and fracture behavior of polycrystals has been of continued interest. In an early fundamental experimental study of the processes that lead to transitions of fracture from ductile to brittle forms in polycrystalline steel, Hahn, et al. (1959) noted that with
Cement Grout Nonlinear Flow Behavior through the Rough Abstract. This research experimentally studied the effects of various fracture roughness (characterized by the fractal dimension ) and normal stress (normal loads ) applied to fracture on ultrafine cement grout nonlinear flow behavior through rough-walled plexiglass fractured sample. A high-precision and effective sealing self-made apparatus was developed to perform the stress-dependent grout
Critical cleavage fracture stress characterization of A508 In this study, experimental heats of SA508 Grade 4N steels with different chemical compositions were characterized mechanically. the cleavage fracture behavior of a CMn vessel steel at
vessels there is now a growing research interest to develop appropriate models based on the study of the micromechanisms of fracture and more often on nite element simulations. This is the socalled methodology of the local approach to fracture. These models apply to either ductile tearing or cleavage fracture .
Experimental Study of Brittle Behavior of Clay Shale in Nov 02, 2011 · The brittle failure behavior of an over-consolidated clay shale (Opalinus Clay) in undrained rapid triaxial compression was studied. The confining stress levels were chosen to simulate the range of confining stresses relevant for underground excavations at the Mont Terri Underground Research Laboratory, and to investigate the transition from axial splitting failure to macroscopic shear
Experimental study on the fracture behavior of AZ91D In this study, quasi-static compression, tensile, shear, and combined compression-shear tests are conducted on cast AZ91D magnesium (Mg) alloy to study its fracture behavior. Shear-compression specimens are applied instead of complex loading device to obtained the fracture response of Mg alloy under mixed compression/shear tests. Results show that the stress states of specimens can be
Fracture behavior of inlay and onlay fixed partial dentures - An in-vitro experimental and XFEM modeling study J Mech Behav Biomed Mater. 2016 Jun;59:279-290. doi:10.1016/j.jmbbm.2016.01.035. Epub 2016 Feb 6. Authors Zhongpu Zhang 1
Phasefieldcrystal study on deformation behavior of May 22, 2019 · 1 INTRODUCTION. In engineering practice, materials suffer from various types of fracture, such as cleavage, 1, 2 ductile fracture, 3, 4 rupture, 5, 6 and intergranular creep fracture. 7, 8 Some materials are brittle and fragile, 9-12 whereas others are ductile and deformable. 13-15 However, brittleness and ductility can transform mutually under certain condition. 16-18 The ductileto
Study of material removal behavior on R-plane of sapphire Dec 23, 2020 · The spalling crack morphology at 180° cutting direction may be related to the high value of the prismatic R 1 A 1 fracture-cleavage parameter. Fig. 14 shows the activation of prismatic R 1 A 1 fracture cleavage and plastic deformation. As this fracturing plane becomes a form of shallow digging with a coupling of prismatic deformation, it
Dec 23, 2020 · The spalling crack morphology at 180° cutting direction may be related to the high value of the prismatic R 1 A 1 fracture-cleavage parameter. Fig. 14 shows the activation of prismatic R 1 A 1 fracture cleavage and plastic deformation. As this fracturing plane becomes a form of shallow digging with a coupling of prismatic deformation, it Experimental Study on the Cleavage Fracture Behavior of an Oct 15, 2014 · This work addresses an experimental investigation on the cleavage fracture behavior of an ASTM A285 Grade C pressure vessel steel. One purpose of this study is to enlarge previously reported work on mechanical and fracture properties for this class of steel to provide a more definite database for use in structural and defect analyses of pressurized components, including pressure vessels and