Fracture behavior

Ebook "Mechanical properties of solid polymers" providing an updated and comprehensive account of the properties of solid polymers, the book covers all aspects of mechanical behaviour. This includes finite elastic behavior, linear viscoelasticity and mechanical relaxations, mechanical anisotropy, non-linear viscoelasicity, yield behavior and fracture.

477p loivantrinh 29-10-2023 3 2   Download

The fabrication could obtain excellent fatigue strength in which the fracture is located in the base metal Mar-M247 side and takes place outside the welded zone. The behavior of the joint under loadings is discussed through a simulation by the numerical finite element method.

6p viberbers 09-08-2023 5 3   Download

The mode I and mode II fracture behavior of a single-layer graphene sheet (SLGS) containing a center crack was characterized with the results of an finite element method (FEM) and an analytical model. Finite element method based micromechanical analysis is used to understand the fracture behavior of functionally SLGS.

7p vidoctorstrange 06-05-2023 4 2   Download

This study describes the process evaluation of an intervention developed to reduce fear of falling (FoF) after hip fracture, within an inpatient geriatric rehabilitation setting. This ‘FIT-HIP intervention’ is a multicomponent cognitive behavioral intervention, conducted by physiotherapists and embedded in usual care in geriatric rehabilitation in the Netherlands.

14p viisaacnewton 25-04-2022 12 5   Download

The brittle fracture mode by cleavage is accounted for by Ritchie–Knott–Rice's deterministic maximum principal stress criterion (Ritchie et al., 1973). The wellknown problem of mesh dependence associated with softening material behavior is remedied by using an integral type nonlocal formulation similar to that presented in Tvergaard and Needleman (1995).

20p guernsey 28-12-2021 9 0   Download

The results demonstrate that localization analyses are a cost-effective and reliable tool for predicting ductile failure, reducing the number of mechanical tests required to calibrate the MMC fracture model compared to the hybrid experimental-numerical approach usually applied.

11p guernsey 28-12-2021 18 0   Download

This paper presentsa3D finite element modeling of the flexural behaviorof ultrahigh-performanceconcrete (UHPC).A four-point flexural teston a UHPCprestressed T girder is considered. The flexuralstrength and cracks pattern of girder are addressed. UHPC material is supposed to be homogeneous andisotropic material. It follows a nonlinear fracture model. The results are comparedwith experimentally captured measurementsand qualitatively discussed.

9p sotritu 18-09-2021 14 1   Download

In this paper, we develop a numerical approach to simulate the 2D complex damage and fracture process of quasi-brittle concrete materials. Based on the phase field theory for the case of elastic isotropic multicomponent materials and the generation process based upon Monte Carlo’s simulation method, we construct a numerical procedure to solve complex damage thermodynamic problems.

11p nguaconbaynhay11 07-04-2021 17 2   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 16 0   Download

The fracture characteristics of single-lap bonded joints in composites to be investigated by structural analysis and experimentally. The effects of bonding method, surface roughness, bond line thickness and the existence of fillet on the failure characteristics and strength of bonded single-lap joints were evaluated experimentally. The failure process, failure mode and the behavior of loaddisplacement curve was apparently different according to bonding method to be evaluated.

15p cleopatrahuynh 01-06-2020 11 0   Download

For this study, different volume fraction (vol.%) of particulate alumina (Al2O3) reinforced aluminium alloy (Al 6061) with 5 vol.%, 15 vol.% and 25 vol.% are produced by powder metallurgy method. These samples were subjected to biaxial stresses in order to investigate the behaviour of the metal matrix composites (MMCs). Microstructure analysis on the individual sample before and after loading was performed under scanning electron microscopy. The small particles of 2 µm in size have exhibited strong interfacial bonding with the matrix.

15p 12120609 01-06-2020 9 0   Download

This study aims to understand the uncertainty about the optimum or best pin position (Dp) for friction stir lap welding (FSLW) of Al-Cu. Tensile shear testing is used to determine the Mechanical strength of FSL welds under static loading.

12p tohitohi 19-05-2020 7 1   Download

The aim of the present research is to study how the interface structure is affected by FSW parameters and how the formation of interface structure affects fracture of Al-Steel and Al-Ti FSL welds.

10p tohitohi 19-05-2020 16 1   Download

Al-Li alloys are attractive for military and aerospace applications because their properties are superior to those of conventional Al alloys. Their exceptional properties are attributed to the addition of Li into the Al matrix, and the technical reasons for adding Li to the Al matrix are presented. The developmental history and applications of Al-Li alloys over the last few years are reviewed. The main issue of Al-Li alloys is anisotropic behavior, and the main reasons for the anisotropic tensile properties and practical methods to reduce it are also introduced.

19p trinhthamhodang1 14-11-2019 10 1   Download

Since AA2060-T8 was introduced in the past few years, investigating the mechanical response, fracture mechanisms, and anisotropic behaviour of AA2060-T8 sheets under high strain rate deformation has been crucial. Thus, uniaxial tensile tests were performed under quasi-static, intermediate, and high strain rate conditions using universal testing machines as well as split Hopkinson tensile bars.

19p caygaocaolon1 13-11-2019 11 0   Download

The present work aims to investigate the fracture behavior of these composites by experimentally measuring and predicting their fracture toughness and by numerically building the model. At the first stage, a center-notched tensile specimen is used to measure fracture toughness in mode I at room temperature; an average fracture toughness of 34.92

7p quilen 08-11-2019 8 1   Download

We added CaCO3 whiskers into polyvinyl alcohol (PVA)-steel hybrid fiber system to obtain multiscale hybrid fiber reinforced cement mortar (MHFRC). Three-point bending (3-p-b) tests were carried out on 64 notched beams to investigate fracture behavior of MHFRC. Double K Fracture Criterion (DKFC) and Work Fracture Method (WFM) were employed to obtain fracture parameters. Influence of the volume fraction of CaCO3 whiskers, content of PVA-steel hybrid fiber and water/ cement ratio (w/c) on fracture parameters are discussed.

33p christian2605 11-10-2019 25 2   Download

The simulated nanocrystalline U0.5Th0.5O2 exhibited a breakdown in the HallePetch relation with mean grain size varying from 3.0 nm to 18.0 nm. Moreover, the elastic modulus of U1-yThyO2 solid solutions with different content of thorium at 300 K was also studied and the results accorded well with the experimental data available in the literature. In addition, the fracture mode of nanocrystalline U0.5Th0.

7p minhxaminhyeu4 26-06-2019 13 1   Download

The fracture to toughness ratio (bulk modulus/shear modulus) in sodium borohydride varied from 1.91 to 1.62, which shows its behavioral change from ductile to brittle on increasing the temperature. Then, ultrasonic Gruneisen ¨ parameters have been computed with the use of elastic constants in the temperature regime 100- 300K. The obtained results have been discussed in correlation with available experimental and theoretical results.

14p thuyliebe 08-10-2018 20 0   Download

(bq) principles of composite material mechanics a unique blend of classical and contemporary mechanics of composites technologies. that book includes frequent references to current state-of-the-art composites technology and research findings.

157p bautroibinhyen19 02-03-2017 47 5   Download