![](images/graphics/blank.gif)
Crack propagation
-
Part 2 of ebook "Non-destructive testing in civil engineering 2000" provides readers with contents including: ultrasonic imaging of concrete members using an array system; influence of aggregates on ultrasonic elastic waves propagation in concrete; differential approach to ultrasonic testing of strength and homogeneity of concrete; measurements of thickness and crack depth in concrete by ultrasonic methods; basic study for an ultrasonic testing methods of PC grouting condition;...
381p
tuongmothua
11-07-2024
0
0
Download
-
In recent times, the phase field method is a robust simulation tool that can predict crack formation and propagation in structures. In brittle and quasi-brittle materials, the strain tensor is decomposed into negative and positive parts corresponding to the compression and tension behaviors when the structure is loaded.
14p
viwalton
02-07-2024
1
1
Download
-
This paper investigates fracture mechanics in particle-reinforced composites by using the extended finite element method enhanced by the consecutive-interpolation quadrilateral element. These composite materials have discontinuous boundaries such as cracks, voids and hard inclusions.
18p
viamancio
04-06-2024
1
0
Download
-
This paper will simulate the propagation of three-dimensional crack in gravity concrete dam. FRANC3D software will be used to simulate three-dimensional crack propagation on concrete gravity dams and predict the direction of crack development. The threedimensional crack profile will be analyzed and compared with the results published in international scientific papers.
10p
dathienlang1012
03-05-2024
2
0
Download
-
The eXtended Finite Element Method (XFEM) produces high effectiveness in analyzing the crack propagation in structures. In this approach, the crack is modeled through enrichment functions instead of explicitly represented on the geometry. This study presents an object-oriented program to simulate crack propagation in 2-dimensional structures.
9p
dathienlang1012
03-05-2024
2
0
Download
-
As an important subset of metamaterials with unprecedented combinations of favorable mechanical, mass transport and biological properties, meta-biomaterials have attracted much research interest recently because of their great potential in biomedical applications, especially in orthopedic tissue repair and replacement.
22p
viberbers
09-08-2023
6
3
Download
-
The objectives of the present study are: Justifying the possibility of using laser cladding technology as a repair method for refurbishment of worn railway axles without jeopardizing their fatigue properties; Analysis of crack initiation and propagation in laser clad samples.
130p
runthenight07
01-03-2023
4
2
Download
-
In the present work, author combined the phase-field modeling taking into account interfacial damage with the problem of the bulk strain orthogonal decompositions by two proposed solutions. The successful prediction of the crack propagation for the inclusion-matrix structures and the multi-phases materials of X-ray computed tomography (XR-CT) images by two proposed solutions will be demonstrated in several numerical examples.
15p
viargus
20-02-2023
5
1
Download
-
Applying nano-silica, as cementitious materials in concrete mixes, is expected to be an improving technique, from both mechanical properties and durability points of view. Th is study aims to analyse the characteristics of fractures in concrete beams incorporating nano - silica in bending tests, such as fracture energy, characteristics of crack length, and crack propagation.
6p
vistephenhawking
26-04-2022
8
1
Download
-
The neutron tomography, although lower in spatial resolution compared with the X-ray synchrotron tomography and requiring higher acquisition time, is sensitive to the phase chemistry, and has the potential to study engineering size components. Bragg edge neutron transmission imaging allows for the mapping of two-dimensional elastic strains and was used to identify the fatigue crack from the reduction in the strain in the region where the crack propagated.
13p
guernsey
28-12-2021
7
0
Download
-
This paper presents a novel calibration procedure of the modified Mohr-Coulomb (MMC) fracture model by use of localization analyses and applies it for three tempers of an AA6016 aluminium alloy. The localization analyses employ the imperfection band approach, where metal plasticity is assigned outside the band and porous plasticity is assigned inside the band.
20p
guernsey
28-12-2021
14
0
Download
-
The numerical wedge splitting tests show that in the case of brittle materials, the lower post-failure stress limit defined in the concrete damaged plasticity model resulted in energy consumption for crack propagation exceeding the defined fracture energy (114% higher in the case of a brittleness number of 4.4).
9p
guernsey
28-12-2021
9
0
Download
-
Crack propagation was experimentally simulated using semicircular specimen with a crack initiated on one side. The work shows that the rate of crack propagation can be described by a power relationship between the stiffness of the mixture and the number of cycles to failure, which is mixture and binder dependent.
2p
phanngocminhtam
14-09-2021
7
1
Download
-
In this paper, the tensile properties of the monocrystalline gold film are studied by using molecular dynamics simulation. The stress-strain relation, crack growth behavior and effects of different temperature are considered. The results show that the stress concentration is obviously distributed in the middle and corners of the specimen, leading to the cracks are formed and propagated in these positions. Under the tensile process, the transformation from the face-centered cubic (FCC) into hexagonal closest packed (HCP) structures occurred.
5p
chauchaungayxua11
23-03-2021
7
2
Download
-
The main purpose of the present work is to modify and enhance the existing fatigue rig which can be used to perform fatigue experiments on different sections including pipe sections. The structure of this paper is as follows. Section 2 describes the experimental setup used for the fatigue rig, describing the original design and current modifications which includes introducing two new load cells, plastic rollers and sliding flexible jaws to accommodate wide range of section sizes and shapes. Then we describe the instrumentation and data acquisition.
13p
trinhthamhodang9
10-12-2020
13
1
Download
-
In this paper, the phase field method will be used to model the cracking propagation at the small scale for elastic media. This method is doing well in DEAL.II with the help of local refinement technique which allows studying the tensile strength of fractured rock mass behavior without prior knowledge of cracking propagation path and reduction of computational consumption.
9p
kequaidan8
02-11-2020
17
1
Download
-
Portland cement concrete (PCC) / asphalt concrete (AC) bonded components are seen in both conventional pavement structures as well as overlays. Due to the environmental and traffic loads, cracks occur at the interface of the PCC and AC layers and finally, may propagate through the interface or one of the layers.
14p
tohitohi
19-05-2020
17
2
Download
-
In this study, this mode in cross-ply and angle-ply laminates has been investigated using a cohesive zone model. The advantage of this method is the possibility of modeling the delamination initiation and propagation without requirement to the presence of initial crack and remeshing.
18p
tohitohi
19-05-2020
25
2
Download
-
In this study, an experimental assessment of thermal shock performance of a monolithic alpha phase SiC tube was conducted by quenching the material from high temperature (up to 1200ºC) into room temperature water. Post-quenching assessment was carried out by a Scanning Electron Microscopy (SEM) image analysis to characterize fractures in the material. This paper assesses the effects of pre-existing pores on SiC cladding brittle fracture and crack development/propagation during the reflood phase.
10p
minhxaminhyeu5
30-06-2019
23
1
Download
-
In this work, a number of handsheets made from unbeaten and unbleached kraft, refiner mechanical and cotton linter pulps and crack propagations on paper samples under monotonic loading, were analyzed and possible links with the properties of fibrous networks were investigated.
10p
masterbarista
14-01-2019
14
1
Download
CHỦ ĐỀ BẠN MUỐN TÌM
![](images/graphics/blank.gif)