2024-03-28T12:05:06Z
https://www.fracturae.com/index.php/index/oai
oai:ojs.www.fracturae.com:article/2000
2019-08-28T08:01:47Z
fis:DFF
"180923 2018 eng "
1971-8993
dc
Mechanical and nanomechanical properties of MWCNT/PP nanocomposite
Tserpes, Konstantinos
University of Patras
Chanteli, A.
Department of Mechanical Engineering & Aeronautics, University of Patras, Laboratory of Technology & Strength of Materials, Patras 26500, Greece
Pantelakis, Sp.
Department of Mechanical Engineering & Aeronautics, University of Patras, Laboratory of Technology & Strength of Materials, Patras 26500, Greece
Koumoulos, E.P.
RNanolab, National Technical University of Athens, School of Chemical Engineering, 9 Heroon Polytechniou St., Zographos, Athens, 15780, Greece
Charitidis, C.A.
RNanolab, National Technical University of Athens, School of Chemical Engineering, 9 Heroon Polytechniou St., Zographos, Athens, 15780, Greece
The mechanical and nanomechanical properties of multi-walled carbon nanotube-reinforced polypropylene (MWCNT/PP) nanocomposite were investigated through tension tests (conducted on 2 wt% and 5 wt% specimens) and nanoindentation tests (conducted on 2 wt% specimens). In addition, the structural properties and topography of the nanocomposite were characterized by means of scanning electron microscopy (SEM) and Scanning Probe Microscopy (SPM), respectively. The results from the tension tests reveal an enhancement and a considerable scatter in the Young’s modulus and maximum stress of the MWCNT/PP nanocomposite for both MWCNT content. For the specimens with mechanical properties lower than the average values, the SEM and SPM images revealed poor dispersion and formation of large agglomerates. The hardness (as resistance to applied load) and Young’s modulus were mapped at 300 nm of displacement, for a grid of 70 ´ 70 μm2. Through projection, the resistance is clearly divided into 3 regions, namely the PP matrix, the interphase (region close to/between MWCNTs) and the regions of the MWCNT agglomerates. The resistance deviates from low values (few MPas) to 1.8 GPa. The present experimental study provides all necessary data for the model creation and validation of the MWCNT/PP nanocomposite.
Gruppo Italiano Frattura (IGF)
2019-03-22 00:00:00
Peer-reviewed Articles
application/pdf
https://www.fracturae.com/index.php/fis/article/view/2000
Frattura ed Integrità Strutturale; Vol. 12 No. 46 (2018): October 2018
eng
Copyright (c) 2018 Konstantinos Tserpes, A. Chanteli, Sp. Pantelakis, E.P. Koumoulos, C.A. Charitidis
oai:ojs.www.fracturae.com:article/2004
2019-08-28T08:02:30Z
fis:DFF
"180923 2018 eng "
1971-8993
dc
Probabilistic-Based Analysis for Damaging Features of Fatigue Strain Loadings
Mod Yunoh, Mohd Faridz
Mr
Abdullah, Shahrum
Universiti Kebangsaan Malaysia
Md. Saad, Mohamad Hanif
Universiti Kebangsaan Malaysia
Mohd Nopiah, Zulkifli
Universiti Kebangsaan Malaysia
Nuawi, Mohd Zaki
Universiti Kebangsaan Malaysia
Karam Singh, Salvinder Singh
Universiti Kebangsaan Malaysia
This paper presents the behaviour of fatigue damage extraction in fatigue strain histories of automotive components using the probabilistic approach. This is a consideration for the evaluation of fatigue damage extraction in automotive components under service loading that is vital in a reliability analysis. For the purpose of research work, two strain signals data are collected from a car coil spring during a road test. The fatigue strain signals are then extracted using the wavelet transform in order to extract the high amplitude segments that contribute to the fatigue damage. At this stage, the low amplitude segments are removed because of their minimal contribution to the fatigue damage. The fatigue damage based on all extracted segments is calculated using some significant strain-life models. Subsequently, the statistics-based Weibull distribution is applied to evaluate the fatigue damage extraction. It has been found that about 70% of the probability of failure occurs in the 1.0 x 10-5 to 1.0 x 10-4 damage range for both signals, while 90% of the probability of failure occurs in the 1.0 x 10-4 to 1.0 x 10-3 damage range. Lastly, it is suggested that the fatigue damage can be determined by the Weibull distribution analysis
Gruppo Italiano Frattura (IGF)
2019-03-22 00:00:00
Peer-reviewed Articles
application/pdf
https://www.fracturae.com/index.php/fis/article/view/2004
Frattura ed Integrità Strutturale; Vol. 12 No. 46 (2018): October 2018
eng
Copyright (c) 2018 Mohd Faridz Mod Yunoh, Shahrum Abdullah, Mohamad Hanif Md. Saad, Zulkifli Mohd Nopiah, Mohd Zaki Nuawi, Salvinder Singh Karam Singh
oai:ojs.www.fracturae.com:article/2011
2019-08-28T09:00:25Z
fis:DFF
"180923 2018 eng "
1971-8993
dc
Fatigue Behaviour and Mean Stress Effect of Thermoplastic Polymers and Composites
Lu, Zongjin
Jaguar Land Rover Ltd
Feng, Bill
Loh, Charlie
Array
More and more polymers and polymer composite materials are used in automotive industry to reduce cost and weight of vehicles to meet the environmental requirement. However, the fatigue behaviour for these materials is less understanding than metallic materials. The current work is focussed on the fatigue behaviour for a range of thermoplastic polymer/composite materials. It reveals that the fatigue behaviour of these materials can be described by S-N curves using the Basquin Equation. All the materials exhibit significant mean stress effect. The most commonly used mean stress correction equations developed in metal fatigue were evaluated with the current test results. It reveals that Goodman, Gerber and Soderberg cannot be used as generic equations for the materials investigated, whereas Smith-Watson-Topper can correlate the test data reasonably well, but the best correlation is given by Walker with material constant γ = 0.4.
Gruppo Italiano Frattura (IGF)
2019-03-22 00:00:00
Peer-reviewed Articles
application/pdf
https://www.fracturae.com/index.php/fis/article/view/2011
Frattura ed Integrità Strutturale; Vol. 12 No. 46 (2018): October 2018
eng
Copyright (c) 2018 Zongjin Lu, Bill Feng, Charlie Loh
oai:ojs.www.fracturae.com:article/2012
2019-08-28T08:00:57Z
fis:DFF
"180923 2018 eng "
1971-8993
dc
Influence of the Coupling between the Mechanical Characteristics and the Welding Conditions by the FSSW Process: Case of the Bimaterial Alu-Steel
Bouchouicha, Benattou
University of DjillaliLiabes, SidiBelAbbès – Algeria.
Mekri, H.
University of DjillaliLiabes, SidiBelAbbès, Algeria.
Miloudi, A.
University of DjillaliLiabes, SidiBelAbbès, Algeria.
Christophe, H.
University of Lille 1, France
Imad, A.
University of Lille 1, France
The present study investigates the effect of joining parameters on the mechanical characteristics of dissimilar friction stir spot welding (FSSW) between AA 6061 Al and galvanized steel. Mechanical performance has been evaluated by shear and microhardnes testing. A macrostructural examination has revealed the creation of mechanical interlocking in the Al steel connections. Shear failure load has increased with increasing both tool rotational speed and plunge depth for all FSSW connections. Higher plunge depth has improved the mechanical interlocking between lower and upper sheet due to the formation of a larger secondary flash.
Gruppo Italiano Frattura (IGF)
2019-03-22 00:00:00
Peer-reviewed Articles
application/pdf
https://www.fracturae.com/index.php/fis/article/view/2012
Frattura ed Integrità Strutturale; Vol. 12 No. 46 (2018): October 2018
eng
Copyright (c) 2018 Benattou BOUCHOUICHA, H. Mekri, A. Miloudi, H. Christophe, A. Imad
oai:ojs.www.fracturae.com:article/2017
2019-08-28T08:00:05Z
fis:DFF
"180922 2018 eng "
1971-8993
dc
A progessive damage fatigue model for unidirectional laminated composites based on finite element analysis
Hack, Michael
Siemens PLM Software
Carrella-Payan, D.
Siemens PLM Software, Germany
Magneville, B.
Siemens PLM Software, Germany
Naito, T.
Honda R&D Co Ltd, Tochigi, Japan
Urushiyama, Y.
Honda R&D Co Ltd, Tochigi, Japan
Yamazaki, W.
University of Tokyo, Japan
Yokozeki, T.
University of Tokyo, Japan
Van Paepegem, W.
Ghent University, Belgium
Array
The simulation of the fatigue damage of laminated composites under multi-axial and variable amplitude loadings has to deal with several new challenges and several methods of damage modelling. In this paper we present how to account for the complex loading by using the damage hysteresis operator approach for fatigue. It is applied to a fatigue model for intra-laminar damage based on stiffness degradation laws from Van Paepegem and has been extended to deal with unidirectional carbon fibres. The parameter identification method is presented here and parameter sensitivities are discussed. The initial static damage of the material is accounted for by using the Ladevèze damage model and the permanent shear strain accumulation based on Van Paepegem’s formulation. This approach has been implemented into commercial software. The intra-laminar fatigue damage model combines efficient methods with a low number of tests to identify the parameters of the stiffness degradation law, this overall procedure for fatigue life prediction is demonstrated to be cost efficient at industrial level.
Gruppo Italiano Frattura (IGF)
2019-03-22 00:00:00
Peer-reviewed Articles
application/pdf
https://www.fracturae.com/index.php/fis/article/view/2017
Frattura ed Integrità Strutturale; Vol. 12 No. 46 (2018): October 2018
eng
Copyright (c) 2018 Michael Hack, D. Carrella-Payan, B. Magneville, T. Naito, Y. Urushiyama, W. Yamazaki, T. Yokozeki, W. Van Paepegem
oai:ojs.www.fracturae.com:article/2020
2019-08-28T07:58:39Z
fis:DFF
"180923 2018 eng "
1971-8993
dc
Bending fatigue strength design method for machine components with complex geometries
Deng, Gang
University of miyazaki
Nakanishi, Tsutomu
The purpose of this study is to devise a bending fatigue strength evaluation method that can be widely used for any machine component under the consideration that bending fatigue breakage depends on the initiation of a surface fatigue crack, namely, the conditions for the initiation of a fatigue crack can be used as the criteria for bending fatigue strength design. The specially designed and manufactured three-point bending specimens with crowned round notches are used in bending fatigue experiments. The obtained bending fatigue strengths are expressed as the maximum actual stress at the critical point, which increases with decreasing notch radius. Considering the effects of the stress distribution on the bending fatigue strength, we present a method for estimating the tension fatigue strength of a smooth specimen, which is shape-independent fatigue strength and can be applied to bending fatigue strength design for machine components with complex geometries.
Gruppo Italiano Frattura (IGF)
2019-03-22 00:00:00
Peer-reviewed Articles
application/pdf
https://www.fracturae.com/index.php/fis/article/view/2020
Frattura ed Integrità Strutturale; Vol. 12 No. 46 (2018): October 2018
eng
Copyright (c) 2018 Gang Deng, Tsutomu Nakanishi
oai:ojs.www.fracturae.com:article/2030
2019-08-28T07:57:53Z
fis:DFF
"180923 2018 eng "
1971-8993
dc
Effect of cold expansion on improving of fatigue initiation life in Aluminium alloy
El Habiri, Mohamed
University of Tlemcen, Ingeniery of Mechanical Systems and Materials Laboratory, Tlemcen (Algeria) Faculty of Technology, Mechanical Engineering Department
Benachour, Mustapha
IS2M Laboratory, University of Tlemcen
Benachour, Nadjia
University of Tlemcen, Ingeniery of Mechanical Systems and Materials Laboratory, Tlemcen (Algeria)
Array
In this paper, numerical investigation was carried out to quantify the effect of the cold expansion on fatigue crack initiation in Aluminium alloy. The improvement in fatigue initiation life of specimen after the cold expansion process was investigated with the drilled hole of 2024 T351 Aluminium alloy plate. The 4.6 % in degree of expansion is applied witch is associated with the effect of friction (µ=0.2). Residual stress field is determined using 3D Finite Element Analysis and shows the presence of compressive residual stress around the hole. The results showed a high level of compressive residual stress in mild and exit face of hole. Local strain approach is applied in evaluation of fatigue initiation lives under Afgrow environment code. Fatigue initiation lives are improved by the presence of compressive residual and comparatively to the drilled hole. Moreover, increasing in stress ratio, increases the fatigue initiation lives with and without the presence of compressive residuals stresses
Gruppo Italiano Frattura (IGF)
2019-03-22 00:00:00
Peer-reviewed Articles
application/pdf
https://www.fracturae.com/index.php/fis/article/view/2030
Frattura ed Integrità Strutturale; Vol. 12 No. 46 (2018): October 2018
eng
Copyright (c) 2018 Mohamed EL HABIRI, Mustapha BENACHOUR, Nadjia BENACHOUR
oai:ojs.www.fracturae.com:article/2033
2019-08-28T07:57:08Z
fis:DFF
"180923 2018 eng "
1971-8993
dc
Effect of Additive Elements Bi/Ni/Ge on Crack Initiation and Propagation for Low-Ag Solders
Hiyoshi, Noritake
University of Fukui
Yamashita, Mitsuo
Hokazono, Hiroaki
This study discusses an effect of additive elements on crack propagation behaviour for low-Ag contain Sn1.0Ag0.7Cu lead-free solders at high temperature. A cyclic push-pull loading tests for four kinds of Sn1.0Ag0.7Cu solders were conducted at 313 K with a single hole specimen. Stress amplitude of solders containing additive element Bi were bigger than that of Bi-free solders. Crack initiation cycle of solders containing Bi were earlier than that of Bi-free solders. Low-Ag solders containing Bi had shorter crack propagation cycles than that of Bi-free solders. These results indicate that the additive element Bi have the effects on the crack initiation and propagation cycles, that is, Bi accelerates the crack propagation rate. We also discuss the adaptation of J-integral range parameter to the crack propagation rate evaluation for solders. J-integral range parameter evaluates the crack propagation rate for low-Ag solders independent of the additive elements.
Gruppo Italiano Frattura (IGF)
2019-03-22 00:00:00
Peer-reviewed Articles
application/pdf
https://www.fracturae.com/index.php/fis/article/view/2033
Frattura ed Integrità Strutturale; Vol. 12 No. 46 (2018): October 2018
eng
Copyright (c) 2018 Noritake Hiyoshi
oai:ojs.www.fracturae.com:article/2034
2019-08-28T07:56:30Z
fis:DFF
"180923 2018 eng "
1971-8993
dc
Investigating the contribution of geometrical parameters and immersion time on fracture toughness of jute fabric composites using statistical techniques
K N, Dr. Bharath
GMIT
Manjunatha, G. B.
Department of mechanical engineering, G M Institute of technology, Karnataka, India,
The aim of this work is to evaluate the failure analysis of jute fabric reinforced composite using statistical technique for marine applications. A fracture mechanics approach is proposed to determine the failure load and fracture toughness of the composite. Jute fiber reinforced epoxy composites were fabricated by hand lay-up technique. The polymer composite is intended for marine applications as an alternative material, mainly in high moisture environments. Thus an investigation was conducted to evaluate the fracture mechanic parameter by immersing composite specimens in sea water. The statistical method of Taguchi was used for experimental design. Edge Notched Tension (ENT) and Single Edge Notched Bend (SENB) test were conducted according to the ASTM E1922 and ASTM D5045 respectively. Main effect graphs are obtained to study the effect of a/w (Crack length to width ratio), thickness and immersion time of composite on fracture mechanics parameters. The approach of calculating the percentage of contribution of control factors was established using by analysis of variance (ANOVA). The influence of fracture parameters of control factors can be analysed by using 3-D response surface graph (RSM). The Validation of experimental results for fracture parameters agreed well with the predicted values.
Gruppo Italiano Frattura (IGF)
2019-03-22 00:00:00
Peer-reviewed Articles
application/pdf
https://www.fracturae.com/index.php/fis/article/view/2034
Frattura ed Integrità Strutturale; Vol. 12 No. 46 (2018): October 2018
eng
Copyright (c) 2018 Dr. Bharath K N, G. B. Manjunatha
oai:ojs.www.fracturae.com:article/2037
2019-08-28T07:55:22Z
fis:DFF
"180923 2018 eng "
1971-8993
dc
Simulation of the behavior of aluminum alloys welded in Friction Stir Welding FSW
Taha, Bounini Bousekrine
University of Sidi Bel Abbes
Benattou, Bouchouicha
University of Sidi Bel Abbes
Ghazi, Abdelkader
University of Mascara, Algeria
The friction stir welding FSW is a topical technique to date, either for experimental or numerical research topics. Based on the fact that the majority of the heat generated, comes from the contact between the workpiece and the shoulder, and from the work of friction done by the pin. Thus, it is crucial to approach the reality, by simulating the most of the conditions, related to the FSW process. The development of a numerical model allows us, not only to simulate the FSW welding process, but also to conduct a parametric study and vary the welding conditions as desired.
Therefore, a numerical study is conducted on the friction stir welding of AA 5083H111 work piece, in order to perceive the optimal settings. A three dimensional model designed by ANSYS APDL was used.
Before proceeding with this, a preliminary experimental study was carried out on FSW welded AA 6082 –T6 specimens and base material, using tensile and fatigue tests. The numerical results obtained, essentially longitudinal residual stresses, are compared to other studies, experimental and numerical.
Gruppo Italiano Frattura (IGF)
2019-03-22 00:00:00
Peer-reviewed Articles
application/pdf
https://www.fracturae.com/index.php/fis/article/view/2037
Frattura ed Integrità Strutturale; Vol. 12 No. 46 (2018): October 2018
eng
Copyright (c) 2018 BOUNINI Bousekrine Taha, BOUCHOUICHA Benattou, Abdelkader GHAZI
oai:ojs.www.fracturae.com:article/2063
2019-08-28T08:03:08Z
fis:DFF
"180923 2018 eng "
1971-8993
dc
High cycle fatigue assessment of steel load-carrying cruciform welded joints: an overview of recent results
wei, song
Harbin institute of Technology
Liu, Xuesong
State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China.
In this paper, high cycle fatigue failure behavior of Load-carrying Cruciform Welded Joints (LCWJ) is assessed using Strain Energy Density (SED) approach. Different analytical solutions are proposed and applied to illustrate the effects of LCWJ geometry under cycle tension and bending according to Finite Element (FE) calculation. The Notch Stress Intensity Factors (NSIF) according to the proposed analytical solutions are validated by comparing finite element data from several simulations in terms of LCWJ models, resulting in a good agreement. A bulk of experimental data taken from tests and the literature is assessed by the proposed solutions as the forms of SED, NSIF and peak stress. The results show that the SED-based analytical solutions for steel LCWJ are effective for high cycle fatigue failure analyses.
Gruppo Italiano Frattura (IGF)
2019-03-22 00:00:00
Peer-reviewed Articles
application/pdf
https://www.fracturae.com/index.php/fis/article/view/2063
Frattura ed Integrità Strutturale; Vol. 12 No. 46 (2018): October 2018
eng
Copyright (c) 2018 song wei, Xuesong Liu
oai:ojs.www.fracturae.com:article/2067
2019-08-28T09:01:31Z
fis:DFF
"180926 2018 eng "
1971-8993
dc
Analysis of cylindrical delamination cracks in multilayered functionally graded non-linear elastic circular shafts under combined loads
Rizov, Victor
Department of Technical Mechanics
University of Architecture, Civil Engineering and Geodesy
This paper is focused on delamination fracture analyses of a multilayered functionally graded circular shaft under two loading combinations (centric tension and torsion, and bending and torsion) assuming non-linear elastic mechanical behavior of the material. The loading combinations under consideration generate mixed-mode II/III delamination crack loading conditions (the centric tension and bending generate mode II crack loading, while the torsion is responsible for mode III crack loading). The shaft is made by concentric longitudinal layers. The number of layers is arbitrary. Besides, each layer has individual thickness and material properties. The material in each layer is functionally graded in radial direction. Hyperbolic laws are used to describe the continuous variation of material properties in radial direction. A cylindrical delamination crack (the crack front is a circle) is located arbitrary between layers. The delamination fracture is studied in terms of the strain energy release rate by analyzing the energy balance. In order to verify the solution obtained, the strain energy release rate is derived also by differentiating the complementary strain energy with respect to the delamination crack area. Parametric investigations of the behavior of the cylindrical delamination crack are carried-out. The present paper is a contribution in the fracture mechanics of multilayered functionally graded non-linear elastic circular shafts under combined loads.
Gruppo Italiano Frattura (IGF)
2019-03-22 00:00:00
Peer-reviewed Articles
application/pdf
https://www.fracturae.com/index.php/fis/article/view/2067
Frattura ed Integrità Strutturale; Vol. 12 No. 46 (2018): October 2018
eng
Copyright (c) 2018 Victor Rizov
oai:ojs.www.fracturae.com:article/2068
2019-08-28T08:04:47Z
fis:DFF
"180923 2018 eng "
1971-8993
dc
Optimization of the geometrical parameters of bonded composite wrap for repairing cracked pipelines
Nesreddine, sidi Mohamed Medjdoub
University of Sidi Bel Abbes
Bouadjra, Belabbes Bachir
University of Djillali Liabes, LPMM Laboratory, Sidi Bel Abbes, Algeria
Abdelkader, Miloudi
University of Djillali Liabes, LMSR Laboratory, Sidi Bel Abbes, Algeria
Array
In this study the finite element method is used to analyze the performances of bonded composite wrap repair of cracked steel pipelines. Parametric analysis was performed in order to highlight the effects of the geometrical properties on the repair efficiency. The experimental design method is used to explore the effects of wrap dimensions (length, angle and thickness) in order to optimize the repair process. We showed in using the MOODE.5 software the most dominant geometrical parameters on stress intensity factor at the crack front which to determine the most important parameters on the repair efficiency. This optimization can help the composite wrap designers to improve the repair performance and rehabilitation.
Gruppo Italiano Frattura (IGF)
2019-03-22 00:00:00
Peer-reviewed Articles
application/pdf
https://www.fracturae.com/index.php/fis/article/view/2068
Frattura ed Integrità Strutturale; Vol. 12 No. 46 (2018): October 2018
eng
Copyright (c) 2018 sidi Mohamed Medjdoub Nesreddine, Belabbes Bachir Bouadjra, Miloudi Abdelkader
oai:ojs.www.fracturae.com:article/2118
2019-08-28T08:06:00Z
fis:DFF
"180923 2018 eng "
1971-8993
dc
Failure behaviour of a fire protected steel element
Drosopoulos, Georgios
Structural Engineering and Computational Mechanics Group, Discipline of Civil Engineering, University of KwaZulu-Natal, Durban, South Africa
Motsa, Siphesihle
University of KwaZulu-Natal, Durban, South Africa
In the present article the failure behaviour of a steel, beam type element supported against fire by protection boards, is studied. Three – dimensional, coupled temperature - displacement, non-linear finite element analysis models have been developed to simulate the unprotected and protected structure. A simple modelling approach is proposed for the investigation of the influence of the gradual failure of fire protection at elevated temperatures, on the structural performance of the system, under thermal and mechanical loads. Yielding of steel is depicted and force – displacement diagrams are used to evaluate the ultimate behaviour of the unprotected and protected models. It is shown that for the protected structure, yielding is less severe and the time period up to maximum strength is significantly longer. Eventually, is depicted how failure of the fire protection leads to a gradual reduction of the response, in fire conditions.
Gruppo Italiano Frattura (IGF)
2019-03-22 00:00:00
Peer-reviewed Articles
application/pdf
https://www.fracturae.com/index.php/fis/article/view/2118
Frattura ed Integrità Strutturale; Vol. 12 No. 46 (2018): October 2018
eng
Copyright (c) 2018 Georgios Drosopoulos, Siphesihle Motsa
oai:ojs.www.fracturae.com:article/2120
2019-08-28T08:05:28Z
fis:DFF
"180923 2018 eng "
1971-8993
dc
Effect of the angles of the cracks of corroded plate in bonded composite repair
Salem, Mokadem
University of Sidi Bel abbes
Mohamed, Berrahou
Belaïd, Mechab
Belabbes, Bachir Bouadjra
In this study a three-dimensional finite element method analysis of repairing plate with bonded composite patch subjected to tensile load was presented. The effect of the corrosion on the damage of the adhesive (FM73) in the length of inclined crack is presented. The obtained results show that the increase of (DR) is due to the increase of the inclination of the crack against it leads to the decrease of the values of the stress intensity factor in mode I (KI).
Gruppo Italiano Frattura (IGF)
2019-03-22 00:00:00
Peer-reviewed Articles
application/pdf
https://www.fracturae.com/index.php/fis/article/view/2120
Frattura ed Integrità Strutturale; Vol. 12 No. 46 (2018): October 2018
eng
Copyright (c) 2018 Mokadem Salem, Berrahou Mohamed, Mechab Belaïd, Bachir Bouadjra Belabbes
oai:ojs.www.fracturae.com:article/2128
2019-08-28T08:06:45Z
fis:DFF
"180923 2018 eng "
1971-8993
dc
Analysis of the crack-crack interaction effect initiated in aeronautical structures and repaired by composite patch
Ibrahim, Nour Chafak
Boualem, Serier
Belaïd, Mechab
In this work, we analyze three - dimensionally, by the finite element method, the performance of the repair of aeronautical structures damaged by cracking and repaired by patch of composite materials. The effect of crack-crack interaction according to their position and interdistance was analyzed. The criterion of rupture retained for this study is the factor of intensity of constraints. We show that this factor increases considerably and reaches a critical threshold when the two cracks develop towards each other. The repair of such damage using a composite patch ensures the stability of this structure during the commissioning process. The sharp fall in the stress intensity factor is characteristic of this stability.
Gruppo Italiano Frattura (IGF)
2019-03-22 00:00:00
Peer-reviewed Articles
application/pdf
https://www.fracturae.com/index.php/fis/article/view/2128
Frattura ed Integrità Strutturale; Vol. 12 No. 46 (2018): October 2018
eng
Copyright (c) 2018 Nour Chafak Ibrahim, Serier Boualem, Mechab Belaïd