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Research Output 2011 2019

2019

A numerical and experimental methodology to investigate morphological changes in wood exposed to fire temperatures

Fortino, S., Rinta-Paavola, A., Pecenko, R., Hozjan, T., Paajanen, A., Vaari, J. & Hostikka, S., 2019, CompWood 2019, Book of Abstracts: International Conference on Computational Methods in Wood Mechanics – from Material Properties to Timber Structures, ECCOMAS Thematic Conference . Bader, T. K., Fussl, J. & Olsson, A. (eds.). Växjö, p. 20-20 1 p.

Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsScientific

Open Access
Wood
Fires
Pyrolysis
Temperature
Cells

Chirality and bound water in the hierarchical cellulose structure

Paajanen, A., Ceccherini, S., Maloney, T. & Ketoja, J., Apr 2019.

Research output: Contribution to conferenceConference AbstractScientificpeer-review

Chirality
Cellulose
Water
Water content
Fibers
1 Citation (Scopus)

Chirality and bound water in the hierarchical cellulose structure

Paajanen, A., Ceccherini, S., Maloney, T. & Ketoja, J. A., 1 Jul 2019, In : Cellulose. 26, 10, p. 5877-5892 16 p.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
Chirality
Cellulose
Water
Freezing
Natural fibers
2 Citations (Scopus)

Crystallization of cross-linked polyethylene by molecular dynamics simulation

Paajanen, A., Vaari, J. & Verho, T., 8 May 2019, In : Polymer. 171, p. 80-86 7 p.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
Polyethylene
Crystallization
Molecular dynamics
Polyethylenes
Polymers

Kuitulujitteisten muovien paloturvallisuus laivoissa

Hakkarainen, T., Paajanen, A. & Korhonen, T., 2019, In : Pelastustieto: Palontorjuntatekniikka-erikoisnumero. p. 21-25

Research output: Contribution to journalArticleProfessional

Thermo-mechanical analysis of laminated composites exposed to fire: Application to the analysis of ship structures

Di Capua, D., García, J., Pacheco, R., Casals, O., Korhonen, T., Hakkarainen, T. & Paajanen, A., 13 May 2019.

Research output: Contribution to conferenceConference AbstractScientific

2018
7 Citations (Scopus)

Crystal Growth in Polyethylene by Molecular Dynamics: The Crystal Edge and Lamellar Thickness

Verho, T., Paajanen, A., Vaari, J. & Laukkanen, A., 10 Jul 2018, In : Macromolecules. 51, 13, p. 4865-4873 9 p.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
Polyethylene
Crystallization
Crystal growth
Molecular dynamics
Polyethylenes
1 Citation (Scopus)

Evaluation of the reactive molecular dynamics method for Research on flame retardants: ATH-filled polyethylene

Vaari, J. & Paajanen, A., 1 Oct 2018, In : Computational Materials Science. 153, p. 103-112 10 p.

Research output: Contribution to journalArticleScientificpeer-review

Flame Retardants
flame retardants
Polyethylene
Flame retardants
Flame

Fire performance assessment of FRP materials

Hakkarainen, T. & Paajanen, A., 2018, NFSD 2018 Book of Abstracts. RISE Research Institutes of Sweden, p. 12 1 p. (RISE Rapport; No. 38).

Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsProfessional

Molecular simulation of flame retardancy: solid-phase effects of aluminium hydroxide

Vaari, J. & Paajanen, A., 2018. 1 p.

Research output: Contribution to conferenceConference AbstractScientificpeer-review

Hydrated alumina
Flame retardants
Pyrolysis
Aluminum
Molecular dynamics
2017
64 Citations (Scopus)

3D-printable bioactivated nanocellulose-alginate hydrogels

Leppiniemi, J., Lahtinen, P., Paajanen, A., Mahlberg, R., Metsä-Kortelainen, S., Pinomaa, T., Pajari, H., Vikholm-Lundin, I., Pursula, P. & Hytönen, V., 2017, In : ACS Applied Materials & Interfaces. 9, 26, p. 21959-21970 12 p.

Research output: Contribution to journalArticleScientificpeer-review

Hydrogels
Hydrogel
Alginate
Printing
Avidin

Atomistic simulations of cellulose nanofibrils and their aggregates in water

Paajanen, A., Sonavane, Y., Maloney, T., Paavilainen, S. & Ketoja, J., 2017.

Research output: Contribution to conferenceConference AbstractScientific

cellulose
water
simulation
penetration
disintegration

Building a reactive molecular dynamics framework for cellulose pyrolysis studies

Vaari, J. & Paajanen, A., 2017.

Research output: Contribution to conferenceConference AbstractScientific

Cellulose
Molecular dynamics
Pyrolysis
Decomposition
formic acid

Condition monitoring, thermal and radiation degradation of polymers inside NPP containments (COMRADE)

Sipilä, K., Joki, H., Lavonen, T., Paajanen, A., Penttilä, S., Granlund, M., Bondesson, A. & Jansson, A., 2017, SAFIR2018 - The Finnish Research Programme on Nuclear Power Plant Safety 2015-2018: Interim Report. VTT Technical Research Centre of Finland, p. 274-285 (VTT Technology, Vol. 294).

Research output: Chapter in Book/Report/Conference proceedingChapter or book articleProfessional

Open Access

FIBRESHIP - Paloturvallisia materiaaleja kevyisiin laivoihin

Paajanen, A. & Hakkarainen, T., 2017, In : Pelastustieto: Palontorjuntatekniikka-erikoisnumero. p. 11-14

Research output: Contribution to journalArticleProfessional

Open Access

Fire risk evaluation and Defence-in-Depth (FIRED)

Matala, A., Sikanen, T., Vaari, J., Paajanen, A., Paudel, D. & Hostikka, S., 2017, SAFIR2018 - The Finnish Research Programme on Nuclear Power Plant Safety 2015-2018: Interim Report. VTT Technical Research Centre of Finland, p. 124-134 (VTT Technology, Vol. 294).

Research output: Chapter in Book/Report/Conference proceedingChapter or book articleProfessional

Open Access
7 Citations (Scopus)

High-temperature decomposition of the cellulose molecule: a stochastic molecular dynamics study

Paajanen, A. & Vaari, J., 1 Jul 2017, In : Cellulose. 24, 7, p. 2713-2725 13 p.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
Cellulose
Molecular dynamics
Decomposition
Pyrolysis
Molecules
2016

Atomistic modelling of novel fire retardants

Paajanen, A. & Vaari, J., 2016, VTT Technical Research Centre of Finland. (VTT Research Report, Vol. VTT-R-04781-16).

Research output: Book/ReportReport

5 Citations (Scopus)

Atomistic molecular dynamics simulations on the interaction of TEMPO-oxidized cellulose nanofibrils in water

Paajanen, A., Sonavane, Y., Ignasiak, D., Ketoja, J. A., Maloney, T. C. & Paavilainen, S., 2016, In : Cellulose. 23, 6, p. 3449-3462

Research output: Contribution to journalArticleScientificpeer-review

oxidized cellulose
Disintegration
Molecular dynamics
Cellulose
Agglomeration

Modeling the 3D Printing of Nanocellulose Hydrogels

Paajanen, A., Pinomaa, T., Pajari, H., Metsä-Kortelainen, S., Lahtinen, P. & Nurmela, A., 2016.

Research output: Contribution to conferenceConference articleScientific

Hydrogels
Printing
Computational fluid dynamics
Shear deformation
Medical applications

Multiscale interface model for design of nano-microstructures in hard materials

Laukkanen, A., Pinomaa, T., Andersson, T., Paajanen, A., Lindroos, T. & Holmberg, K., 2016, World PM2016 Proceedings. European Power Metallurgy Association EPMA

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

2015

A model for estimating property loss risks in building fires

Paajanen, A., Hakkarainen, T. & Tillander, K., 2015, Proceedings of the 2nd IAFSS European Symposium of Fire Safety Science, 2015.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

risk assessment
loss
rescue service
statistics

Carbonization of cellulose fibre precursors: experimental and modelling efforts

Heikkilä, P., Valta, K., Vehviläinen, M., Kamppuri, T., Orell, O., Kakkonen, M., Pasanen, A. T., Honkanen, M., Paajanen, A., Pinomaa, T., Vaari, J., Vippola, M., Vuorinen, J. & Harlin, A., 2015.

Research output: Contribution to conferenceConference articleScientific

cellulosic fibers
cellulose
carbon
carbamates
activated carbon

Carbon materials from bio-based and tailored precursors

Pasanen, A. T., Wikberg, H., Paajanen, A., Pinomaa, T., Vaari, J., Heikkilä, P. & Harlin, A., 2015. 16 p.

Research output: Contribution to conferenceOther conference contributionScientific

Carbonization
Carbon
Raw materials
Carbon nanofibers
Petroleum
6 Citations (Scopus)

Experimental characterisation of sprays resulting from impacts of liquid-containing projectiles

Hostikka, S., Silde, A., Sikanen, T., Vepsä, A., Paajanen, A. & Honkanen, M., 2015, In : Nuclear Engineering and Design. 295, p. 388-402

Research output: Contribution to journalArticleScientificpeer-review

Projectiles
spray
sprayers
projectiles
High speed cameras

Komposiittimateriaalien palomallinnus. Osa A: Pyrolyysi ja palosuojamekanismit

Matala, A. & Paajanen, A., 2015, In : Pelastustieto: Palontorjuntatekniikka-erikoisnumero. p. 6-8

Research output: Contribution to journalArticleProfessional

Open Access

Komposiittimateriaalien palomallinnus Osa B: Cfd-Fea -menetelmä ja sen kokeellinen validointi

Paajanen, A., Matala, A., Korhonen, T., Hostikka, S., Jansson, R., Blomqvist, P., Olsen, H. & Gutkin, R., 2015, In : Pelastustieto: Palontorjuntatekniikka-erikoisnumero. p. 9-13

Research output: Contribution to journalArticleProfessional

Open Access

Modelling the fire behaviour of polymer composites for transport applications

Matala, A., Paajanen, A., Korhonen, T. & Hostikka, S., 2015, Proceedings of the 2nd IAFSS European Symposium on Fire Safety Science. Merci, B. & Boustras, G. (eds.). p. 219-223

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

Fires
Composite materials
Polymers
Glass fibers
Temperature

Numerical simulation for thermo-mechanical analysis within alternative design

Golyshev, P., Gutkin, R., Hamann, R., Paajanen, A., Matala, A., Korhonen, T., Rahm, M. & Blomqvist, P., 2015.

Research output: Contribution to conferenceConference articleScientific

Fires
Computer simulation
Composite materials
Ships
Fire resistance

Palo-osastoinnin luotettavuuden laskennallinen arviointi

Hostikka, S., Kling, T., Paajanen, A. & Matala, A., 2015, In : Pelastustieto: Palontorjuntatekniikka-erikoisnumero. p. 81-84

Research output: Contribution to journalArticleProfessional

Open Access

Rakennuspalojen omaisuusvahinkoriskin ennakointi

Paajanen, A., Hakkarainen, T. & Tillander, K., 2015, In : Pelastustieto: Palontorjuntatekniikka-erikoisnumero. p. 53-56

Research output: Contribution to journalArticleProfessional

Open Access

Simulation Toolbox Development for Fire PRA

Hostikka, S., Mangs, J., Kling, T., Paajanen, A. & Pinomaa, T., 2015, International Workshop on FIRE Probabilistic Risk Assessment (PRA): Workshop Proceedings. p. 145-159 (Nuclear Safety; No. NEA/CSNI/R(2015)12).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

Open Access
Fires
Smoke
Electronic equipment
Computer simulation
2014

CFD-FEA Simulation Framework for Composite Structures in Fire

Paajanen, A., Hostikka, S., Matala, A. & Gutkin, R., 2014, Proceedings: 16th European Conference on Composite Materials, ECCM 2014.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

11 Citations (Scopus)

Modeling and Simulation of High Pressure Water Mist Systems

Sikanen, T., Vaari, J., Hostikka, S. & Paajanen, A., 2014, In : Fire Technology. 50, 3, p. 483-504 22 p.

Research output: Contribution to journalArticleScientificpeer-review

Fog
Water
Fires
Simulators
Orifices

Molecular dynamics simulation of functionalized nanofibrillar cellulose

Sonavane, Y., Paajanen, A., Ketoja, J., Paavilainen, S. & Maloney, T., 2014.

Research output: Contribution to conferenceConference AbstractScientific

Cellulose
Functional groups
Molecular dynamics
Oxidation
Computer simulation

Onnettomuusvahingot pelastustoimen riskianalyysityössä

Paajanen, A., Hakkarainen, T. & Tillander, K., 2014, Helsinki: Helsingin kaupungin pelastuslaitos. 88 p. (Helsingin kaupungin pelastuslaitoksen julkaisuja).

Research output: Book/ReportReport

Open Access
2013

Evacuation safety of passenger trains

Hakkarainen, T., Kling, T., Mikkola, E., Paajanen, A. & Hostikka, S., 2013, Research highlights in safety and security. Espoo: VTT Technical Research Centre of Finland, p. 44-45 (VTT Research Highlights; No. 10).

Research output: Chapter in Book/Report/Conference proceedingChapter or book articleProfessional

Open Access
Fires
Safety engineering
Standardization
Toxicity
Effluents
3 Citations (Scopus)

FDS2FEM - a tool for coupling fire and structural analyses

Paajanen, A., Korhonen, T., Sippola, M., Hostikka, S., Malendowski, M. & Gutkin, R., 2013, Safety, Failures and Robustness of Large Structures. Helsinki, FI: International Association for Bridge and Structural Engineering IABSE, p. 218-224

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Fires
Interoperability
ABAQUS
Structural analysis
Simulators

Fire defence-in-depth assessment in TVO cable room – feasibility study

Paajanen, A. & Kling, T., 8 Feb 2013, VTT Technical Research Centre of Finland. 34 p. (VTT Research Report; No. VTT-R-01072-13).

Research output: Book/ReportReport

Open Access

Numerical simulations on the performance of water-based fire suppression systems

Vaari, J., Hostikka, S., Sikanen, T. & Paajanen, A., 2013, Research highlights in safety and security. Espoo: VTT Technical Research Centre of Finland, p. 42-43 (VTT Research Highlights; No. 10).

Research output: Chapter in Book/Report/Conference proceedingChapter or book articleProfessional

Open Access
Fires
Computer simulation
Water
Testing
Simulators

Onnettomuusvahingot pelastustoimen toimintavalmiuden suunnittelussa

Tillander, K., Paajanen, A., Rinne, T., Hakkarainen, T. & Rajamäki, R., 2013, In : Pelastustieto: Palontorjuntatekniikka-erikoisnumero. p. 69-71

Research output: Contribution to journalArticleProfessional

Open Access

Rakenteiden käyttäytyminen tulipalossa CFD-FEM mallinnuksella

Paajanen, A., Korhonen, T., Sippola, M. & Hostikka, S., 2013, In : Pelastustieto: Palontorjuntatekniikka-erikoisnumero. p. 94-97

Research output: Contribution to journalArticleProfessional

Open Access

Risk assessment of large fire loads (LARGO)

Hostikka, S., Kling, T., Mangs, J., Matala, A., Paajanen, A. & Sikanen, T., 2013, SAFIR2014: The Finnish Research Programme on Nuclear Power Plant Safety 2011-2014: Interim Report. Simola, K. (ed.). Espoo: VTT Technical Research Centre of Finland, p. 392-402 (VTT Technology; No. 80).

Research output: Chapter in Book/Report/Conference proceedingChapter or book articleProfessional

Open Access
2012

Numerical simulations on the performance of waterbased fire suppression systems

Vaari, J., Hostikka, S., Sikanen, T. & Paajanen, A., 2012, Espoo: VTT Technical Research Centre of Finland. 144 p. (VTT Technology; No. 54).

Research output: Book/ReportReport

Open Access
Fires
Computer simulation
Water
Simulators
Cooling
1 Citation (Scopus)

Simulation of fire behaviour and human operations using a new stochastic operation time model

Kling, T., Hostikka, S. & Paajanen, A., 2012, 11th International Probabilistic Safety Assessment and Management Conference and the Annual European Safety and Reliability Conference 2012 : (PSAM11 ESREL 2012);: Helsinki, Finland, 25 - 29 June 2012. International Association of Probabilistic Safety Assessment and Management IAPSAM, Vol. 2. p. 1550-1559

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

2011

Water mist spray modelling with FDS

Hostikka, S., Vaari, J., Sikanen, T. & Paajanen, A., 2011, Proceedings, Fire and Evacuation Modeling Technical Conference 2011: Baltimore, Maryland, August 15-16, 2011. 8 p.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Open Access