Mikko Kanerva

Tampere University

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Jarno Jokinen

Tampere University

Essi Sarlin

Tampere University

Olli Saarela

VTT Technical Research Centre of Finland

Olli Orell

Tampere University

T. Pärnänen

Tampere University

Jyrki Vuorinen

Tampere University

Rama K. Layek

Lappeenranta-Lahti University of Technology

Markus Wallin

Aalto University

Nazanin Pournoori

Tampere University

Royson Donate Dsouza

Tampere University

Cooperative Institutions

Tampere University

Aalto University

VTT Technical Research Centre of Finland

Tampere University of Applied Sciences

University of Helsinki

Institute of Macromolecular Compounds

Tampere University

Espoo Music Institute

Russian Academy of Sciences

Peter the Great St. Petersburg Polytechnic University

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Erosive wear of filled vinylester composites in water and acidic media at elevated temperature

Wear (2017)

Essi Sarlin Meri Saarimäki Reija Sironen Mari Lindgren Sanna Siljander

Filler (materials)

Particle (ecology)

10.1016/j.wear.2017.07.011

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Citations (7)

Dataset on Simulated Microbond Tests Using Finite Element Method: Simulation Cases About Different Geometrical Influences, Material Behavior, Damage Evolution, and Element Meshes

Royson Donate Dsouza Donato Di Vito Jarno Jokinen Mikko Kanerva

This data article provides an extensive dataset derived from finite element (FE) simulations of microbond tests (MB). The simulations explore a broad range of structural effects and artifacts that influence the outcome of the MB test. A total of 432 simulations were performed considering the various effects which include the geometry and position of the blade, plastic behaviour of the thermoset and thermoplastic droplets, fibre material, residual stresses, fracture mode at the interface, and FE mesh sensitivity. Every FE simulation consists of blade reaction force, blade displacement, fibre displacement, fibre strain and various energy quantities such as interface strain energy, total strain energy, damage energy and plastic dissipation energy. For ease of reference, the individual files are organised using a systematic naming sequence based on the simulation matrices, detailing the specific abbreviations for each file. A user-friendly interface is also provided to read and plot the data from the output files, in reference to the simulation matrix. For further reading, the interpretation and analysis of this data can be found in a research article titled “Mutual dependence of experimental and data analysis features in characterization of fibre-matrix interface via microdroplets (R. Dsouza et al., 2023)”.

10.2139/ssrn.4648530

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Multi-layer continuum model for adhesive films with knitted carrier

Composites Science and Technology (2023)

O. Rodera Jarno Jokinen Olli Orell Lijo George Nazanin Pournoori

Film adhesives are a form of composite consisting of two constituents i.e. fibrous carrier and matrix. The fracture surfaces are usually dominated by the carrier-matrix de-bonding, but it also co-exists with a minor failure related to resin closer to the adhesive–adherend interface. This investigation aims at a realistic representation of the failure modes. For this, a 3D multi-layer approach of a FM 300-2 adhesive is defined where a non-local Continuum Damage Model (CDM) is developed accounting for the proper matrix mechanism defined with lower fracture energies. The carrier-matrix de-bonding was implemented by an in-built Cohesive Zone Model (CZM) at the interfaces of the matrix-carrier layers. For the characterization and validation, the modelling was tested with the Mode I fracture response of the adhesive in joints (butt joint, BJ, and double cantilever beam specimen, DCB) and bulk form (tensile tests). Numerical results with CZM-CDM implementation agreed with the experimental data in terms of load response and representation of the failure mechanisms, when correct material constants are applied. The multi-layer damage model was able to define strength and fracture properties of the matrix phase by the prediction of failure initiation in the BJ test. Consequently, the mechanism was able to reproduce the local damage path that occurred close to the adhesive–adherend interface.

Cohesive zone model

Adhesive Bonding

10.1016/j.compscitech.2023.109981

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Fatigue testing of large sized bevel gears

VDI Verlag eBooks (2023)

E. Virtanen Mikko Kanerva Gábor Szánti

Bevel gear

Bevel

10.51202/9783181024225-897

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Fatigue testing of quasi-UD and cross-ply reinforced composites: the recent achievements of test specimen generation

Samuli Korkiakoski Mikko Kanerva Olli Saarela

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DESIGNING PASSENGER SHIPS FOR IN-SERVICE CONDITIONS

Naval architect (1989)

Mikko Kanerva

The problems of matching hull design to service requirements for passenger ships are discussed. Particular emphasis is given the improvement in operational performance that can result from use of the goose-neck bulbous bow; developments in aft ship design; and propeller design. The capabilities of a program known as MICROFOC, which runs on a microcomputer, are then discussed briefly. The program can integrate and evaluate all the major parameters affecting the service operation of a ship on a specific route.

Naval architecture

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Effect of graphene oxide surface treatment on the interfacial adhesion and the tensile performance of flax epoxy composites

Composites Part A Applied Science and Manufacturing (2020)

Farzin Javanshour Karthik Ram Ramakrishnan Rama K. Layek Pekka Laurikainen Alexandros Prapavesis

The high stiffness and damping properties of flax fibres promote the integration of biocomposites in structural applications. However, the strength of flax/epoxy composites is still limited compared to glass/epoxy composites. Graphene oxide (GO) has proved to be a promising building block for nanocomposites due to its high toughness, stiffness and tunable interfacial interactions with polymers. This study aims to understand the potential of GO-based surface treatment of flax fibres to modify the interfacial adhesion and tensile performance of flax fibre/epoxy composites. GO-modification improves the interfacial shear strength of elementary flax fibre/epoxy by 43%. The interfacial improvement is also established by the 40% higher transverse bending strength compared to untreated flax/epoxy composites. The tensile moduli of GO-modified flax/epoxy composites are on average 2 GPa higher than for untreated flax fibre/epoxy composites in all strain ranges. The quasi-static longitudinal tensile strength of unidirectional composites is not affected by GO-modification.

10.1016/j.compositesa.2020.106270

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Citations (50)

Damage tolerance analysis of double strap joints with composite adherends

The Journal of Adhesion (2024)

Jarno Jokinen Olli Orell P. Hakala O. Rodera Markus Wallin

Damages in composite structures are typically repaired using external bonded patches. In this work, the damage tolerance within external patches is studied using double strap joint (DSJ) with carbon fibre reinforced plastic (CFRP) specimens. The damage tolerance in this work refers to bond-line manufacturing-related defects such as debond or dry area. Both intact and pre-cracked DSJ specimens are numerically analysed using experiments for comparisons. DSJ specimens' adherends were CFRP laminates with AS4/3501–6 plies and bonded using adhesive film FM 300–2. The pre-cracked specimens are monitored during experiments using high-speed digital image correlation to visualize damage propagation. The unsymmetric pre-crack influences in a clear way as shown by experiments. The numerical analyses reveal the effect of failure mechanisms on final failure and the maximum force during a test. The included parametric sensitivity analysis is performed using statistical methods. The normally distributed parameters are sampled using separate distributions for each analysed interface and fracture mode. UNCLASSIFIED Based on Foreground Information under EDA Contract No B.PRJ.RT.670 covering the Ad Hoc Project entitled "PATCHBOND II".

Damage tolerance

10.1080/00218464.2024.2317215

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Plasticity effects during the 4-point bending of intramedullary leg lengthening implants with telescopic structures

Mikko Kanerva Zahra Besharat Ryan Livingston Harri Hallila Mark W. Rutland

A telescopic intramedullary leg lengthening implant during standard (ASTM F1264) four-point bend testing is analysed in this study. The structure of a telescopic implant is simulated using differen ...

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Fatigue strength of laser-welded foam-filled steel sandwich beams

Materials & Design (2016)

Anssi T. Karttunen Mikko Kanerva Darko Frank Jani Romanoff Heikki Remes

Fatigue limit

10.1016/j.matdes.2016.11.039

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Citations (20)