Blar i NTNU Open på forfatter "Razavi, Seyed Mohammad Javad"
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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 heat treatment on fatigue behavior of as-built notched Co-Cr-Mo parts produced by Selective Laser Melting
Razavi, Seyed Mohammad Javad; Avanzini, A; Cornacchia, G; Giorleo, L; Berto, Filippo (Peer reviewed; Journal article, 2021)In this paper Cobalt-Chromium-Molybdenum (Co-Cr-Mo) specimens produced by Selective Laser Melting (SLM) for biomedical field were studied. In particular, fatigue tests were carried out comparing as-built condition with Hot ... -
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 ... -
Effect of selective laser melting process parameters on microstructural and mechanical properties of TiC–NiCr cermet
Aramian, Atefeh; Sadeghian, Zohreh; Razavi, Seyed Mohammad Javad; Prashanth, Konda Gokuldoss; Berto, Filippo (Peer reviewed; Journal article, 2020)TiC–NiCr cermet was in situ synthesized through selective laser melting (SLM) process using a Ti, C, and Ni80Cr20 powder mixture. Feedstock powder was prepared using high energy milling and mixing for a total time of 15 ... -
Effects of different indentation methods on fatigue life extension of cracked specimens
Razavi, Seyed Mohammad Javad; Ayatollahi, Majid reza; Amozadi, Atefeh; Berto, Filippo (Journal article; Peer reviewed, 2018)In this paper, 3 different indentation methods have been investigated for crack arresting and fatigue life enhancement of cracked components. The influence of residual stresses induced by indentation on fatigue crack growth ... -
The effects of microporosity in struts of gyroid lattice structures produced by laser powder bed fusion
Du Plessis, Anton; Razavi, Seyed Mohammad Javad; Berto, Filippo (Peer reviewed; Journal article, 2020)Additive manufacturing by laser powder bed fusion allows the production of complex parts including lattice structures in popular metal alloys such as Ti6Al4V. Lattice structures are a class of meta-materials which hold ... -
Efficient Improvement in Fracture Toughness of Laminated Composite by Interleaving Functionalized Nanofibers
Razavi, Seyed Mohammad Javad; Esmaeely neisiany, Rasoul; Razavi, Moe; Fakhar, Afsaneh; Shanmugam, Vigneshwaran; Alagumalai, V; Försth, Michael; Sas, Gabriel; Das, Oisik (Journal article; Peer reviewed, 2021)Functionalized polyacrylonitrile (PAN) nanofibers were used in the present investigation to enhance the fracture behavior of carbon epoxy composite in order to prevent delamination if any crack propagates in the resin rich ... -
Energy density and fracture parameters of coated Scots pine
Karvan, Poorya; Bertolin, Chiara; Berto, Filippo; Razavi, Seyed Mohammad Javad (Peer reviewed; Journal article, 2021)An attempt was made to investigate the Michalski’s proven fluctuation theory through the use of the fracture characteristic and the energy density – dynamic surface value – of Scots pine coated with Renaissance wax, paraloid, ... -
Energy-based ductile failure predictions in cracked friction-stir welded joints
Majidi, Hamid Reza; Torabi, Ali reza; Zabihi, Majed; Razavi, Seyed Mohammad Javad; Berto, Filippo (Peer reviewed; Journal article, 2019)This research aims to study the fracture behaviour in dissimilar aluminum alloys adjoined by friction stir welding (FSW). In this way, experimental data dealing with this topic was taken from the recent literature. In those ... -
Energy-based low cycle fatigue indicator prediction of non-load-carrying cruciform welded joints
Song, Wei; Liu, Xuesong; Berto, Filippo; Razavi, Seyed Mohammad Javad (Journal article, 2018)A new uniform analytical formulation is proposed to predict the low cycle fatigue assessment indicator of non-loading cruciform welded joints under tensile cyclic loading considering the effects of plasticity and mechanical ... -
Evaluation of hydrogen effect on the fatigue crack growth behavior of medium-Mn steels via in-situ hydrogen plasma charging in an environmental scanning electron microscope
Wan, Di; Ma, Yan; Sun, Binhan; Razavi, Seyed Mohammad Javad; Wang, Dong; Lu, Xu; Song, Wenwen (Peer reviewed; Journal article, 2021)Fatigue crack growth (FCG) tests were conducted on a medium-Mn steel annealed at two intercritical annealing temperatures, resulting in different austenite () to ferrite () phase fractions and different (meta-)stabilities. ... -
Experimental characterization and theoretical prediction of quasi-static fracture behavior of notched ZK60-T5 Mg samples
Albinmousa, Jafar; Peron, Mirco; Razavi, Seyed Mohammad Javad; Al Hussain, M; Al Ghanim, A; Berto, Filippo (Peer reviewed; Journal article, 2021)Magnesium and its alloys have increasingly gained attention due to their attractive properties, including the high specific strength that makes them suitable for several applications in different industries. However, their ... -
Experimental Investigation of Thrust Force, Delamination and Surface Roughness in Drilling Hybrid Structural Composites
Shanmugam, Vigneshwaran; Marimuthu, Uthayakumar; Rajendran, Sundarakannan; Veerasimman, Arumugaprabu; Mahaboob Basha, A; Bin Abdul Majid, MS; Esmaeely neisiany, Rasoul; Försth, Michael; Sas, Gabriel; Razavi, Seyed Mohammad Javad; Das, Oisik (Peer reviewed; Journal article, 2021)Filled hybrid composites are widely used in various structural applications where machining is critical. Hence, it is essential to understand the performance of the fibre composites’ machining behaviour. As such, a new ... -
Experimental study of the simultaneous effect of nano-silica and nano-carbon black on permeability and mechanical properties of the concrete
M, Rezania; M, Panahandeh; Razavi, Seyed Mohammad Javad; Berto, Filippo (Journal article; Peer reviewed, 2019)The permeability level and resistance of the concrete cutoff wall of earth dam on the penetration of fluids are crucial factors and have an essential effect on the stability of the concrete core. In this research, the ... -
Fatigue Assessment of AZ31 Magnesium Alloy Weldments - Application of a Local Energy-Based Method
Bale, Emil Scott (Master thesis, 2018)Traditional stress-based fatigue criterions are highly dependent of geometry and loading mode and are often based on idealized geometries and loading conditions. These fatigue criteria are seldom applicable in general ... -
Fatigue assessment of semi-circular notched specimens produced by Laser Engineered Net Shaping method
Razavi, Seyed Mohammad Javad; Bordonaro, Giancarlo; Ferro, Paolo; Berto, Filippo (Journal article; Peer reviewed, 2018)As a primary failure mechanism, fatigue failure of additively manufactured metallic parts has attracted considerable attention in both aerospace and biomedical applications. According to some specific design requirements, ... -
Fatigue assessment of steel load-carrying cruciform welded joints by means of local approaches
Song, Wei; Liu, Xuesong; Razavi, Seyed Mohammad Javad (Journal article, 2018)In this paper, local approaches are employed to analyse stress distributions, local fatigue indicators of weld toe, and weld root in load‐carrying cruciform welded joints (LCWJs). An extension of previous available equations ... -
Fatigue behavior of porous Ti-6Al-4V made by laser-engineered net shaping
Razavi, Seyed Mohammad Javad; Bordonaro, Giancarlo; Ferro, Paolo; Torgersen, Jan; Berto, Filippo (Journal article; Peer reviewed, 2018)The fatigue behavior and fracture mechanisms of additively manufactured Ti-6Al-4V specimens are investigated in this study. Three sets of testing samples were fabricated for the assessment of fatigue life. The first batch ...