Introduction to Fracture Analysis

In hydraulic fracturing, determining the perforation pressure loss is a critical step in the design strategy, on-site troubleshooting diagnostics and post-fracture analysis.

An extended local insulation crack model is proposed, and fracture analysis is carried out for the above problems.

The paper describes the Field Boundary Element Method applied to the fracture analysis of a 2D rectangular plate made of Functionally Graded Material to calculate Mode I Stress Intensity Factor.

Fracture analysis reveals that the whiskers bear most loads and fracture firstly to form crack sources with the load increasing during drawing.

Fracture analysis reveals ductile fracture, with cracks along martensitic regions within the microstructure.

Fracture analysis indicates that the fracture position changes significantly with the strain amplitude and phase angle.

This paper presents a fracture analysis of ultra-thin coating/substrate structures with interface cracks.

The quantitative explanation were under consideration, such as loads effects; material properties; prediction of response; fracture analysis.

The compliance based beam method (CBBM) was used by researchers for fracture analysis of ENF specimens.

This hypothesis was confirmed from microfracture analysis and simulation: fractures in gneiss were short and mostly in one preferred orientation, whereas the fractures in granite were longer and had two preferred orientations.

Most of the literature study of fracture analysis carried out for the symmetric gears and the majority of them are two-dimensional analysis.

Fracture analysis exhibited ductile fracture with dimples and dendrites in the TRIP steels surface.

The fracture analysis done by SEM, clearly revealed that the crack initiated from the region of voids or porosity in the matrix and not in the region of boron carbide and copper coated basalt fiber interface.

Subsequent ffracture analysis indicated the fracture mainly took place at the ferrite side.

The fracture analysis indicated that the cured cover layer could still have a mechanical reinforcement to the TSEP Sn–Bi solder joints after these reliability tests.

Fracture analysis showed the optimum condition prevented ply delamination and reduced damage area along sample length appearing to increase cohesion between the difficult to adhere thermoplastic PP and SFF-CF plies to take on higher loads.

Fracture analysis suggests that for the Sn/hBN heterostructure the fracture initiates from the stanene layer while for the Sn/Gr and Sn/SiC heterostructures the fracture initiates from the Gr and SiC layer, respectively, for both armchair and zigzag directional loading.

Fracture analysis of reinforced concrete deep beam strengthened with carbon fiber-reinforced polymer (CFRP) plates was carried out.

The method in this article may be much important to the fracture analysis of composite materials.

To investigate the build orientation effect on the shear behavior, this study conducted extensive microstructural characterization along with fracture analysis.

The failure mechanism was investigated by macroscopic observation, fracture analysis, metallographic analysis, hardness testing and structural evolution analysis by electron backscatter diffraction(EBSD), kernel average misorientation (KAM) and strain analysis.

In this paper, the boundary element method (BEM) based on the elasticity theory is developed for fracture analysis of cracked thin structures with the relative thickness-to-length ratio in the micro- or nano-scales.

The fracture analysis indicated that the pore structure at joint interface delayed the crack propagation of lotus-type porous Cu joints.

The fracture analysis indicated a mixed fracture mode of macro brittle fracture and micro ductile fracture of the composite.

Fracture analysis was performed using light microscope imaging.

Fracture analysis revealed that the bonding strength of the “B-top 2” interface was higher than that of the Fe matrix, and it was difficult to fracture at the interface.

This paper presents a fracture analysis of a brake pipe installed on the bogie of a metro train running on one metro line in China.

However, more analysis needs to be conducted to say whether FEM alone is sufficient for fracture analysis.

At the same time, the fracture analysis shows that some ferrite phases are affected by the precipitate in the grain and produce quasi-cleavage fracture.

Failure analysis was conducted for a cracked Incoloy 800H reformer tube serviced at 580℃ in an ammonia installation based on the microstructure observation, fracture analysis, mechanical properties testing and finite element analysis.

The rupture analysis of lubricating oil pipe has been conducted through chemical composition analysis, metallographic analysis and fracture analysis.

The fracture analysis shows that the fracture energy of the highly chemically crosslinked hydrogels scales with the crack velocity as a power law relation Γ ∝ V c a ( a = 0.

In fracture analysis, the macroscopic and microscopic morphology of fracture provides the most direct information for failure analysis and the most direct evidence for fracture analysis.

The J-integral is widely used in fracture analysis to characterize the stress-strain field at the crack tip.

Fracture analysis was performed employing light microscope imaging.

With the optimized condition set as the response variable with the highest lap shear value, the joints obtained were measured for their quality by means of end-notched flexure mechanical testing, thermal analysis, and fracture analysis after LSS testing using optical and electronic microscopy.

In case of fracture analysis, a crack-based indicator to govern the stable crack propagation was defined to characterize fracture resistance of asphalt binders.

The literature reveals that the key element to the fracture analysis of the bi-material interface crack is how to perform the mode partitioning.

Safe operating life of a nuclear power plant is ensured by carrying out fracture analysis of the RPV against thermal shock.

This fracture analysis approach can be extended to composite structural components in defense and aerospace applications.

The QEFGM is then employed in the fracture analysis of a piezoelectric elliptical tube subjected to internal pressure and thermal loading.

8, so the bolt was not safe, which further verified the conclusion of fracture analysis.

It is a computer interactive program based on Right Dihedron Method for fracture analysis and paleostress reconstruction.

In this paper, ENIG-finished Cu disks were bonded by In-coated Cu sheet through TLP bonding at 250°C and the shear test as well as fracture analysis during thermal aging was conducted.

This paper presents a multi-temporal series high-accuracy numerical manifold method (NMM) for fracture analysis of solid materials under highly time-dependent thermal loadings.

Fracture analysis indicated more ductile behaviors for the samples fabricated by FSVW with the coolant systems.

Further, mechanical properties like tensile test supported by fracture analysis and Rockwell hardness profile of the FSP zone are also discussed.

Based on the shear test results and fracture analysis, regardless of diffusion time, the joints were fractured at the region of the reaction zone along the IMCs.

Standard failure analysis procedure involving: site visit, visual inspection, microstructural analysis, fracture analysis, analytical stress calculation and FEM analysis was followed.

In structural geology ‘fracture analysis’ is used to determine the order in which the sets are superimposed and knowing this, the 3D geometry of the network can be determined.

Using meso-structural representations of concrete, with aggregates dispersed in mortar, has become a standard approach for damage and fracture analysis.

A fracture analysis of the failed tensile samples revealed ductile fracture features.

Fracture analysis after mechanical testing was done with the aid of optical microscopy.

Fracture analysis after bond strength test showed combined adhesion/cohesion type failure for the Cr2O3 coatings.

Meanwhile, the results of AE online monitoring and fracture analysis show that the matrix damage is more serious at higher heating rate and that more delamination occours in tensile fractures.

A semiautomated image-segmentation and fracture analysis was applied to orthomosaics generated from a photogrammetric survey to assess small- and large-scale fracture intensity and rock mass heterogeneity.

To this end, a novel definition of the energy accumulation variable is proposed, allowing the fracture analysis at monotonic loading without the interference of the fatigue extension, thus making the framework generalised.

The results presented in this research allow drawing conclusions on the accuracy of fracture analysis predictions for each of the three different specimens by comparing 2D numerical calculations with semi-analytical results and 1D analytical solutions.

By using OSPD, the limitations of geometrical discontinuity in fracture analysis can be overcome.

In the fracture analysis code, the angles of the diagonal plane with respect to the horizontal axis were 0, 15, 30, 45, 60, 75, and 90 degrees.

We investigated the effect of nanosized NbC precipitates on hydrogen-induced cracking (HIC) of high-strength low-alloy steel by conducting slow-strain-rate tensile tests (SSRT) and performing continuous hydrogen charging and fracture analysis.

The flexoelectricity, which is a new electromechanical coupling phenomenon between strain gradients and electric polarization, has a great influence on the fracture analysis of flexoelectric solids due to the large gradients near the cracks.

We propose a novel computational approach of fracture analysis and compare the effects of fixation stability in the lumbar spine.

This paper describes the Field Boundary Element Method (FBEM) applied to the fracture analysis of a 2D rectangular plate made of Functionally Graded Material (FGM) to calculate Mode I Stress Intensity Factor (SIF).

Besides, metallographic test and fracture analysis were conducted to analyze the mechanism of the change of mechanical behaviors.

Fracture analysis of reinforced concrete deep beam strengthened with carbon fiber-reinforced polymer (CFRP) plates was carried out.

The initial portion of this paper describes the application of a novel and low-cost diagnostic method for post-fracture analysis.

After welding, the joints were subjected to tensile testing, fracture analysis, and microstructure analysis of the joint interface.