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Damage Detection of Gantry Crane with a Moving Mass Using Artificial Neural Network

Safaei, Mohammad (author), Hejazian, Mahsa (author), Pedrammehr, Siamak (author), Pakzad, Sajjad (author), Ettefagh, Mir Mohammad (author), Fotouhi, M. (author)

Gantry cranes play a pivotal role in various industrial applications, and their reliable operation is paramount. While routine inspections are standard practice, certain defects, particularly in less accessible components, remain challenging to detect early. In this study, first a finite element model is presented, and the damage is introduced...

journal article 2024

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Development of an Innovative Extension for Fatigue Life Monitoring Using a Piezoelectric Sensor

Ghaderiaram, A. (author), Mohammadi, R. (author), Schlangen, E. (author), Fotouhi, M. (author)

Engineering structures, such as bridges, wind turbines, airplanes, ships, buildings, and offshore platforms, often experience uncertain dynamic loadings due to environmental factors and operational conditions. The lack of knowledge about the load spectrum for these structures poses challenges in terms of design and can lead to either over...

journal article 2024

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Effect of shear stresses on fibre direction tensile failure using a new simple and reliable test method with thin plies

Jalalvand, Meisam (author), Fotouhi, M. (author), Wisnom, Michael R. (author)

A new method of creating in-plane combined tension-shear stress states using only tensile loading is proposed. Thin-ply angle-ply carbon/epoxy laminates are sandwiched between unidirectional glass layers to eliminate any stress concentration around the samples ends and gripping zone. Use of the thin plies successfully suppresses early...

journal article 2024

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Multivariable Signal Processing for Characterization of Failure Modes in Thin-Ply Hybrid Laminates Using Acoustic Emission Sensors

Fotouhi, Sakineh (author), Assaad, Maher (author), Nasor, Mohamed (author), Imran, Ahmed (author), Ashames, Akram (author), Fotouhi, M. (author)

The aim of this study was to find the correlation between failure modes and acoustic emission (AE) events in a comprehensive range of thin-ply pseudo-ductile hybrid composite laminates when loaded under uniaxial tension. The investigated hybrid laminates were Unidirectional (UD), Quasi-Isotropic (QI) and open-hole QI configurations composed of S...

journal article 2023

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Acoustic Emission-Based Analysis of Damage Mechanisms in FilamentWound Fiber Reinforced Composite Tubes

Ghahremani, Parsa (author), Najafabadi, Mehdi Ahmadi (author), Alimirzaei, Sajad (author), Fotouhi, M. (author)

This study investigates the mechanical behavior and damage mechanisms of thin-walled glass/epoxy filament wound tubes under quasi-static lateral loads. The novelty is that the tubes are reinforced in critical areas using strip composite patches to provide a topology-optimized tube, and their damage mechanisms and mechanical performance are...

journal article 2023

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Smart hybrid composite sensor technology to enhance the detection of low energy impact damage in composite structures

Fotouhi, Sakineh (author), Jalalvand, Meisam (author), Wisnom, Michael R. (author), Fotouhi, M. (author)

This paper introduces novel structural health monitoring (SHM) sensors to improve the detection of low energy impact damage in laminated composites. The sensor is a purposely designed thin-ply hybrid composite, composed of a layer of unidirectional S-glass/epoxy and another layer of unidirectional ultra-high modulus (UHM) carbon/epoxy. The...

journal article 2023

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Application of 3D Printing in Pharmaceutical Sciences, and Evaluation of Administration Routes for Drug-Loaded Composites

Khatami, Mohamad (author), Doniavi, Ali (author), Allahyari, Saeideh (author), Feizollahi, Mahsa (author), Abazari, Amir Musa (author), Fotouhi, M. (author)

3D printing is a novel approach in the pharmaceutical field, but its usage has not been fully established. This method can promote drug therapy and overcome some traditional treatment challenges in different ways that are discussed in this paper. “One-size-fits-all”, Large-scale production, and less patient and physician acceptability are...

journal article 2023

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Reaction behavior and wear properties of in-situ air plasma-sprayed Al₂O₃-TiB₂ composite coatings

Mirhosseini, Seyed Hossein (author), Mosallaee, Masoud (author), Razavi, Mansour (author), Fotouhi, M. (author)

In this study, Al₂O₃-TiB₂ coating was successfully deposited on steel substrates by in situ plasma spraying (IPS) using H₃BO₃, Al, and TiO₂ reactants. Beside TiB₂ and Al₂O₃, Al₁₈B₄O₃₃ was formed as a by-product...

journal article 2023

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Plasma-sprayed Al₂O₃-TiB₂-SiC ternary composite coatings and its wear behaviour based on SiC content

Mirhosseini, Seyed Hossein (author), Mosallaee, Masoud (author), Razavi, Mansour (author), Fotouhi, M. (author)

This paper aims to study the effect of adding different SiC content on the wear performance of Al₂O₃-TiB₂-SiC ternary composite coatings produced by the air plasma spraying process. The study used SHS powders as primary materials, consisting of H₃BO₃, Al, and TiO₂, and 5, 10,...

journal article 2023

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Barely visible impact damage detection in composite structures using deep learning networks with varying complexities

Tabatabaeian, A. (author), Jerkovic, Bruno (author), Harrison, Philip (author), Marchiori, Elena (author), Fotouhi, M. (author)

Visual inspection is one of the most common non-destructive testing (NDT) methods that offers a fast evaluation of surface damage in aerospace composite structures. However, it is highly dependent on human-related factors and may not detect barely visible impact damage (BVID). In this research, low velocity impact tests with different energy...

journal article 2023

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Polysulfone nanofiber-modified composite laminates: Investigation of mode-I fatigue behavior and damage mechanisms

Mohammadi, R. (author), Akrami, R. (author), Assaad, Maher (author), Nasor, Mohamed (author), Imran, Ahmed (author), Fotouhi, M. (author)

In this study, the fatigue properties of carbon fiber-reinforced polymer (CFRP) composite laminates were investigated, specifically focusing on the incorporation of 100-µm polysulfone (PSU) nanofibers as an interleaving material. The PSU nanofibers were produced using the electrospinning technique. Both quasi-static and fatigue tests were...

journal article 2023

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Enhancing flexibility and strength-to-weight ratio of polymeric stents: A new variable-thickness design approach

Khatami, Mohamad (author), Doniavi, Ali (author), Abazari, Amir Musa (author), Fotouhi, M. (author)

This paper presents a new design strategy to improve the flexibility and strength-to-weight ratio of polymeric stents. The proposed design introduces a variable-thickness (VT) stent that outperforms conventional polymeric stents with constant thickness (CT). While polymeric stents offer benefits like flexibility and bioabsorption, their...

journal article 2023

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Investigating the fatigue behaviour of quasi-isotropic pseudo-ductile thin-ply carbon/glass epoxy hybrid composites

Fotouhi, M. (author), Suwarta, Putu (author), Tabatabaeian, A. (author), Fotouhi, Sakineh (author), Jenkin, Ross (author), Jalalvand, Meisam (author), Wisnom, Michael R. (author)

This paper investigates the fatigue behaviour of pseudo-ductile Quasi-Isotropic (QI) interlayer hybrids with un-notched and open-hole configurations. Two different types of QI pseudo-ductile hybrids were evaluated; HighC, with carbon to glass thickness ratio of 0.29, that is made of thin-ply M46JB-carbon/epoxy and thin-ply Xstrand-glass/epoxy...

journal article 2022

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Experimental and numerical study of hybrid (CFRP-GFRP) composite laminates containing circular cut-outs under shear loading

Damghani, Mahdi (author), Pir, Rakib Ali (author), Murphy, Adrian (author), Fotouhi, M. (author)

Previous works have established the response and failure behaviour of hybrid (CFRP-GFRP) laminates when subjected to a wide range of destabilising loads. However, to date no works have focused on plates with cut-outs under shear loading and quantified the influence of selective laminate shapes and hybridisation on their post-buckling response...

journal article 2022

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Fiber reinforced polymer composites in bridge industry

Ali, Hafiz Tauqeer (author), Akrami, Roya (author), Fotouhi, Sakineh (author), Bodaghi, Mahdi (author), Saeedifar, M. (author), Yusuf, Mohammad (author), Fotouhi, Mohamad (author)

This paper presents a concise state-of-the-art review on the use of Fiber Reinforced Polymers (FRPs) in bridge engineering. The paper is organized into commonly used FRP bridge components, and different materials/manufacturing techniques used for repairing and construction of FRP bridges. Efforts have been made to give a clear and concise...

journal article 2021

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High performance quasi-isotropic thin-ply carbon/glass hybrid composites with pseudo-ductile behaviour loaded off-axis

Fotouhi, Mohamad (author), Jalalvand, Meisam (author), Saeedifar, M. (author), Xiao, Bill (author), Wisnom, Michael R (author)

The aim of this work was to investigate the effect of loading angle variation on the pseudo-ductility of quasi-isotropic (QI) hybrid composite laminates. Previously, hybrids of thin-ply carbon fibres and standard glass fibres were found to have an excellent pseudo-ductile behaviour both in unidirectional (UD) and QI configurations when subjected...

journal article 2020

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Acoustic emission based investigation on the effect of temperature and hybridization on drop weight impact and post-impact residual strength of hemp and basalt fibres reinforced polymer composite laminates

Suresh Kumar, C. (author), Fotouhi, Mohamad (author), Saeedifar, M. (author), Arumugam, V. (author)

This paper investigates the effect of temperature and hybridization on the impact damage evolution and post-impact residual strength of hemp/epoxy, basalt/epoxy and their hybrid laminates, using mechanical and acoustic emission (AE) based analysis. To start with, the specimens were impacted by a drop weight impact tower machine at two...

journal article 2019

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The study of buckling and post-buckling behavior of laminated composites consisting multiple delaminations using acoustic emission

Sobhani, Anvar (author), Saeedifar, M. (author), Najafabadi, Mehdi Ahmadi (author), Fotouhi, Mohamad (author), Zarouchas, D. (author)

This study introduces a comprehensive set of designed and tested glass/epoxy composites, AE monitoring and signal processing techniques; (i) to investigate the effect of multiple delaminations on buckling and post-buckling behaviors of laminated composites and (ii) to evaluate Acoustic Emission (AE) technique ability to monitor the buckling...

journal article 2018

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Acoustic Emission-Based Methodology to Evaluate Delamination Crack Growth Under Quasi-static and Fatigue Loading Conditions

Saeedifar, M. (author), Ahmadi Najafabadi, Mehdi (author), Mohammadi, Kaivan (author), Fotouhi, Mohamad (author), Hosseini Toudeshky, Hossein (author), Shah Mohammadi, Mohammad Reza (author)

The aim of this study was to investigate the applicability of acoustic emission (AE) technique to evaluate delamination crack in glass/epoxy composite laminates under quasi-static and fatigue loading. To this aim, double cantilever beam specimens were subjected to mode I quasi-static and fatigue loading conditions and the generated AE signals...

journal article 2018