Browsing NTNU Open by Author "Razavi, Seyed Mohammad Javad"
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A strain-based criterion for failure load prediction of steel/CFRP double strap joints
Razavi, Seyed Mohammad Javad; Ayatollahi, Majid Reza; Majidi, Hamid Reza; Berto, Filippo (Journal article, 2018)One of the most effective approaches to improve the strength of steel structures is using the carbon fiber reinforced polymer (CFRP) as externally-bonded sheets. In this paper, a strain-based failure criterion, namely the ... -
A synthesis of geometry effect on brittle fracture
Razavi, Seyed Mohammad Javad; Ayatollahi, Majid reza; Berto, Filippo (Journal article, 2018)There are numerous analytical solutions in order to take into account the geometry effect on the fracture toughness and the fracture load of the cracked specimens. However, due to the complexities of the mentioned criteria ... -
Acoustic Emission NDT for monitoring hygro-mechanical reactions of coated pine wood: a methodological approach
Bertolin, Chiara; De Ferri, Lavinia; Razavi, Seyed Mohammad Javad; Berto, Filippo (Peer reviewed; Journal article, 2020)Wood generally suffers drastic RH variations, strongly affecting its dimensional stability because of the gain or loss of adsorbed water. The proposed paper intends to investigate the applicability of a multi-technique ... -
Application of an average strain energy density criterion to obtain the mixed mode fracture load of granite rock tested with the cracked asymmetric four-point bend specimens
Razavi, Seyed Mohammad Javad; Aliha, Mohammad Reza Mohammad; Berto, Filippo (Journal article, 2018)Mixed mode brittle fracture behaviour of granite rock is studied experimentally and theoretically using Asymmetric Four Point Bend (AFPB) specimens containing pre-cracks subjected to different mixed mode loading conditions, ... -
Application of EMC-J criterion to fracture prediction of U-notched polymeric specimens with nonlinear behaviour
Majidi, Hamid Reza; Razavi, Seyed Mohammad Javad; Torabi, Ali reza (Journal article, 2018)The main purpose of the present research paper is to investigate applicability of a new energy‐based failure prediction model, called EMC‐J criterion, to predict the critical loads of U‐notched polymeric samples having a ... -
Assessment of mixed mode fatigue crack growth under biaxial loading using an iterative technique
Razavi, Seyed Mohammad Javad; Ayatollahi, Majid reza; Berto, Filippo (Peer reviewed; Journal article, 2020)Crack growth is investigated numerically in a cruciform specimen with an inclined center crack subjected to biaxial fatigue loading. The mixed-mode fatigue crack growth was examined using a parametric study both on the ... -
Averaged strain energy density to assess mixed mode I/III fracture of U-notched GPPS samples
Saboori, Behnam; Torabi, Ali reza; Berto, Filippo; Razavi, Seyed Mohammad Javad (Journal article, 2018)In the present contribution, fracture resistance of U-notched GPPS members under mixed mode I/III loading conditions is assessed by using the Averaged Strain Energy Density (ASED) criterion. This criterion has been founded ... -
Based on energy approach for the fatigue life evaluation of micrometric-sized single-crystal silicon notched specimens
Bressan, Stefano; Razavi, Seyed Mohammad Javad; Berto, Filippo (Journal article; Peer reviewed, 2018)Fatigue behavior of single-crystal silicon notched specimens have been analyzed employing a strain energy density parameter. The micrometric specimens obtained from {1 0 0} and {1 1 0} wafers and characterized by five ... -
Brittle fracture prediction of key-hole notched specimens by means of J-integral expression
Razavi, Seyed Mohammad Javad; Majidi, Hamid reza; Berto, Filippo (Peer reviewed; Journal article, 2020)The main goal of the present research is to check if J-integral criterion is capable of predicting the onset of brittle fracture in key-hole notched isostatic poly-granular graphite plates. In this way, this article provides ... -
Collection of experimental data for multiaxial fatigue criteria verification
Morettini, Giulia; Braccesi, Claudio; Cianetti, Filippo; Razavi, Seyed Mohammad Javad; Solberg, Klas; Capponi, Lorenzo (Peer reviewed; Journal article, 2020)The present paper aims to propose data from incisive multiaxial fatigue experimental tests which results from the analysis of several works within current literature. Approximately 200 experimental datasets have been ... -
Core‐shell nanofibers for developing self‐healing materials: Recent progress and future directions
Esmaeely Neisiany, R; Nouri khorasani, Saied; Kong Yoong Lee, Jeremy; Razavi, Seyed Mohammad Javad; Enayati, MS; Naeimirad, M; Berto, Filippo; Ramakrishna, Seeram (Peer reviewed; Journal article, 2019)The knowledge of self‐healing was developed to ensure more durable and reliable engineering materials. Healing agent encapsulation has shown to be one of the most promising approaches in self‐healing technology. The healing ... -
Crack propagation in a brittle DCB specimen assessed by means of the Williams? power expansion
Malikova, Lucie; Razavi, Seyed Mohammad Javad; Berto, Filippo (Journal article; Peer reviewed, 2019)A double cantilever beam geometry has been chosen in order to investigate the importance of the higher-order terms of the Williams’ power expansion for the crack path estimation. The crack propagation has been tested ... -
The Critical Distance Method to estimate the fatigue strength of notched additively manufactured titanium
Al Zamzami, I; Razavi, Seyed Mohammad Javad; Berto, Filippo; Susmel, Luca (Peer reviewed; Journal article, 2020)The present investigation deals with the problem of performing the fatigue assessment of notched components made of 3D-printed titanium alloy Ti6Al4V when it is used in the as-manufactured condition. The notch fatigue ... -
Directed Energy Deposition versus Wrought Ti-6Al-4V: A Comparison of Microstructure, Fatigue Behavior, and Notch Sensitivity
Razavi, Seyed Mohammad Javad; Berto, Filippo (Journal article; Peer reviewed, 2019)Laser Engineered Net Shaping (LENS), a Direct Energy Deposition (DED) additive manufacturing process is a 3D manufacturing process generally used to produce fully dense parts or to repair/add additional material to an ... -
Ductile failure prediction of thin notched aluminum plates subjected to combined tension-shear loading
Torabi, Ali reza; Berto, Filippo; Razavi, Seyed Mohammad Javad (Journal article, 2018)The main goal of the present research is to check the suitability of the combined Equivalent Material Concept-Averaged Strain Energy Density (ASED) failure criterion, called EMC-ASED, in predicting the load-carrying capacity ... -
Effect of build thickness and geometry on quasi-static and fatigue behavior of Ti-6Al-4V produced by Electron Beam Melting
Razavi, Seyed Mohammad Javad; Van Hooreweder, Brecht; Berto, Filippo (Peer reviewed; Journal article, 2020)The geometry and material properties of additively manufactured (AM) parts are closely related in a way that any alteration in geometry of the part will change the underlying manufacturing strategy. This in turn, affects ... -
Effect of corrosion and fatigue on the remaining life of structures and its implication to additive manufacturing
Peng, D; Jones, R; Berto, Filippo; Razavi, Seyed Mohammad Javad (Journal article; Peer reviewed, 2018)This paper investigates the combined effect of corrosion and fatigue on the growth of cracks that arise from natural corrosion in steel bridges. It is shown that if these two effects need to be simultaneously analyzed. If ... -
The effect of crack insertion for FDM printed PLA materials on Mode I and Mode II fracture toughness
Valean, C; Marsavina, Liviu; Marghitas, M; Linul, E; Razavi, Seyed Mohammad Javad; Berto, Filippo; Brighenti, Roberto (Peer reviewed; Journal article, 2020)The paper presents mode I and II fracture toughness results for polylactic acid material obtained via fused deposition modeling. The tests were performed using Single Edge Notch Bend specimens loaded in four point bending: ... -
Effect of manufacturing parameters on tensile properties of FDM printed specimens
Valean, C; Marsavina, L; Marghitas, M; Linul, E; Razavi, Seyed Mohammad Javad; Berto, Filippo (Peer reviewed; Journal article, 2020)Nowadays, one of the most studied technologies for obtaining different parts is Additive Manufacturing (AM). Whether it is about plastic or metal materials, AM is used because very complex parts can be obtained, without ... -
Effect of neat and reinforced polyacrylonitrile nanofibers incorporation on interlaminar fracture toughness of carbon/epoxy composite
Razavi, Seyed Mohammad Javad; Esmaeely neisiany, Rasoul; Nouri khorasani, Saied; Ramakrishna, Seeram; Berto, Filippo (Journal article; Peer reviewed, 2018)This paper presents an experimental investigation on fracture behavior of epoxy resin-carbon fibers composites interleaved with both neat polyacrylonitrile (PAN) nanofibers and Al2O3-PAN nanofibers. In particular, the paper ...