Timo Björk

Professor

Mechanical Engineering

LUT School of Energy Systems

Lappeenranta

Timo.Bjork@lut.fi

+358400553508

Biography

Load CV (PDF)

Bending effects on the fatigue strength of non-load-carrying transverse attachment joints made of ultra-high-strength steel

2022

Publication type

A4 Conference proceedings

Author(s)

Ahola Antti, Björk Timo

Other Focus Area

LUT School of Energy Systems

Data related to the microstructural identification and analyzing the mechanical properties of maraging stainless steel 13Cr10Ni1.7Mo2Al0.4Mn0.4Si (commercially known as CX) processed by laser powder bed fusion method

2022

Publication type

A1 Journal article (refereed), original research

Author(s)

Afkhami Shahriar, Javaheri Vahid, Dabiri Edris, Piili Heidi, Björk Timo

Other Focus Area

Mechanics of Materials

Metals and Alloys

Materials Science

LUT School of Energy Systems

Design and Fabrication Factors for the Fatigue Assessment of Welded Structures

2022

Publication type

A4 Conference proceedings

Author(s)

Skriko Tuomas, Ahola Antti, Björk Timo

Other Focus Area

LUT School of Energy Systems

Effects of manufacturing parameters, heat treatment, and machining on the physical and mechanical properties of 13Cr10Ni1.7Mo2Al0.4Mn0.4Si steel processed by laser powder bed fusion

2022

Publication type

A1 Journal article (refereed), original research

Author(s)

Afkhami Shahriar, Javaheri Vahid, Dabiri Edris, Piili Heidi, Björk Timo

Mechanical Engineering

Mechanics of Materials

Metals and Alloys

LUT School of Energy Systems

Evaluation of geometrical notch and quality effects in the fatigue strength assessment of ultra-high-strength steel cut edges

2022

Publication type

A1 Journal article (refereed), original research

Author(s)

Lipiäinen Kalle, Afkhami Shahriar, Ahola Antti, Björk Timo

Business - Sustainable renewal of business and industry

LUT School of Energy Systems

Fatigue performance of hot-dip galvanized ultra-high-strength steel laser cut notches under constant and variable amplitude loading (IIW doc. XIII-2934-2022)

Lipiäinen Kalle, Ahola Antti, Björk Timo

Business - Sustainable renewal of business and industry

LUT School of Energy Systems

Fatigue performance of notched and hot-dip galvanized laser and mechanically cut S960 steel components considering local defects with the theory of critical distances

2022

Publication type

A1 Journal article (refereed), original research

Author(s)

Lipiäinen Kalle, Ahola Antti, Kaijalainen Antti, Björk Timo

Business - Sustainable renewal of business and industry

LUT School of Energy Systems

Fatigue performance of stainless tool steel CX processed by laser powder bed fusion

2022

Publication type

A1 Journal article (refereed), original research

Author(s)

Afkhami Shahriar, Javaheri Vahid, Lipiäinen Kalle, Amraei Mohsen, Dabiri Edris, Björk Timo

Other Focus Area

Mechanical Engineering

Mechanics of Materials

Metals and Alloys

Materials Science

LUT School of Energy Systems

Fatigue performance of the welded details of an old, demolished steel railway bridge

2022

Publication type

A1 Journal article (refereed), original research

Author(s)

Ahola Antti, Lipiäinen Kalle, Afkhami Shahriar, Lilja Heikki, Björk Timo

Other Focus Area

LUT School of Energy Systems

Fatigue strength of blast-cleaned post-weld-treated non-load-carrying fillet weld joints (IIW doc. XIII-2932-2022)

Ahola Antti, Lipiäinen Kalle, Riski Jani, Koskimäki Matti, Pyörret Joonas, Björk Timo

Other Focus Area

LUT School of Energy Systems

Fatigue strength of laser-dressed non-load-carrying fillet weld joints made of ultra-high-strength steel

2022

Publication type

A4 Conference proceedings

Author(s)

Skriko Tuomas, Ahola Antti, Poutiainen Ilkka, Björk Timo

Other Focus Area

LUT School of Energy Systems

Mechanical performance and design optimisation of metal honeycombs fabricated by laser powder bed fusion

2022

Publication type

A1 Journal article (refereed), original research

Author(s)

Afkhami Shahriar, Amraei Mohsen, Gardner Leroy, Piili Heidi, Wadee M. Ahmer, Salminen Antti, Björk Timo

Other Focus Area

Business - Sustainable renewal of business and industry

Energy - Transition to carbon-neutral world

Aerospace Engineering

Industrial and Manufacturing Engineering

Mechanical Engineering

Automotive Engineering

Mechanics of Materials

Civil and Structural Engineering

Metals and Alloys

Materials Science

Computational Mechanics

LUT School of Energy Systems

Mechanical properties of butt-welded ultra-high strength steels at elevated temperatures

2022

Publication type

A1 Journal article (refereed), original research

Author(s)

Ghafouri Mehran, Amraei Mohsen, Pokka Aki-Petteri, Björk Timo, Larkiola Jari, Piili Heidi, Zhao Xiao-Lin

Other Focus Area

LUT School of Energy Systems

Numerical and experimental investigations on the welding residual stresses and distortions of the short fillet welds in high strength steel plates

2022

Publication type

A1 Journal article (refereed), original research

Author(s)

Ghafouri Mehran, Ahola Antti, Ahn Joseph, Björk Timo

Other Focus Area

LUT School of Energy Systems

On the backward design – A novel concept for the design of welded structures for demanding application (IIW doc. XV-1645-2022)

Björk Timo, Ahola Antti, Skriko Tuomas, Lipiäinen Kalle

Other Focus Area

LUT School of Energy Systems

On the interaction of axial and bending loads in the weld root fatigue strength assessment of load-carrying cruciform joints

2022

Publication type

A1 Journal article (refereed), original research

Author(s)

Ahola Antti, Rohani Raftar Hamidreza, Björk Timo, Kukkonen Olavi

Other Focus Area

LUT School of Energy Systems

Overview on the digitized production of welded steel structures

2022

Publication type

A1 Journal article (refereed), original research

Author(s)

Skriko Tuomas, Ahola Antti, Björk Timo

Other Focus Area

LUT School of Energy Systems

Overview on the fatigue strength of single-sided transverse and longitudinal fillet weld joints

2022

Publication type

A4 Conference proceedings

Author(s)

Ahola Antti, Skriko Tuomas, Björk Timo

Other Focus Area

LUT School of Energy Systems

Static strength capacity of single-sided fillet welds

2022

Publication type

A4 Conference proceedings

Author(s)

Skriko Tuomas, Ahola Antti, Lipiäinen Kalle, Björk Timo

Other Focus Area

LUT School of Energy Systems

Thermomechanical simulation of the heat-affected zones in welded ultra-high strength steels: microstructure and mechanical properties

2022

Publication type

A1 Journal article (refereed), original research

Author(s)

Afkhami Shahriar, Javaheri Vahid, Amraei Mohsen, Skriko Tuomas, Piili Heidi, Zhao Xiao-Ling, Björk Timo

Other Focus Area

Mechanical Engineering

Mechanics of Materials

Metals and Alloys

Materials Science (miscellaneous)

Materials Science

LUT School of Energy Systems

Ultimate capacity of SHS X-joints made of normal and high-strength weathering steels

2022

Publication type

A1 Journal article (refereed), original research

Author(s)

Ahola Antti, Afkhami Shahriar, Lipiäinen Kalle, Björk Timo

Other Focus Area

LUT School of Energy Systems

Welding-induced stresses and distortion in high-strength steel T-joints: Numerical and experimental study

2022

Publication type

A1 Journal article (refereed), original research

Author(s)

Ghafouri Mehran, Ahola Antti, Ahn Joseph, Björk Timo

Other Focus Area

LUT School of Energy Systems

CFRP strengthening of butt-welded ultra-high strength steels under quasi-static tensile loading

2021

Publication type

A1 Journal article (refereed), original research

Author(s)

Amraei Mohsen, Jiao Hui, Toghyani Amir, Björk Timo, Zhao Xiao-Ling

Discretization and material parameter characterization for a HAZ in direct-quenched armor steel

2021

Publication type

A1 Journal article (refereed), original research

Author(s)

Neuvonen Riku, Skriko Tuomas, Björk Timo

Effects of manufacturing parameters and mechanical post-processing on stainless steel 316L processed by laser powder bed fusion

2021

Publication type

A1 Journal article (refereed), original research

Author(s)

Afkhami Shahriar, Dabiri Mohammad, Piili Heidi, Björk Timo

Effects of notch-load interactions on the mechanical performance of 3D printed tool steel 18Ni300

2021

Publication type

A1 Journal article (refereed), original research

Author(s)

Afkhami Shahriar, Dabiri Edris, Lipiäinen Kalle, Piili Heidi, Björk Timo

Mechanical Engineering

Mechanics of Materials

Metals and Alloys

Materials Science (miscellaneous)

Materials Science

LUT School of Energy Systems

Fatigue strength assessment of cut edges considering material strength and cutting quality

2021

Publication type

A1 Journal article (refereed), original research

Author(s)

Lipiäinen Kalle, Kaijalainen Antti, Ahola Antti, Björk Timo

Fatigue strength of hot-dip galvanized S960 cut edges and longitudinal welds

2021

Publication type

A1 Journal article (refereed), original research

Author(s)

Lipiäinen Kalle, Ahola Antti, Virolainen Esa, Hirvi Ari, Björk Timo

Business - Sustainable renewal of business and industry

LUT School of Energy Systems

Fatigue strength of longitudinal load-carrying welds in beams made of ultra-high-strength steel

2021

Publication type

A1 Journal article (refereed), original research

Author(s)

Skriko Tuomas, Lipiäinen Kalle, Ahola Antti, Mettänen Heli, Björk Timo

Metal additive manufacturing for industrial applications

2021

Publication type

D4 Published development or research report or study

Author(s)

Afkhami Shahriar, Amraei Mohsen, Unt Anna, Piili Heidi, Björk Timo

Mechanical Engineering

LUT School of Energy Systems

On the geometrical notch and quality effects on the fatigue strength of ultra-high-strength steel cut edges (IIW Doc. XIII-2884-2021)

Lipiäinen Kalle, Afkhami Shahriar, Ahola Antti, Björk Timo

Other Focus Area

LUT School of Energy Systems

On the interaction of axial and bending loads in the weld root fatigue strength assessment of load-carrying cruciform joints (IIW Doc. 2883-2021)

Ahola Antti, Rohani Raftar Hamidreza, Björk Timo, Kukkonen Olavi

Other Focus Area

LUT School of Energy Systems

On the weld root fatigue strength and improvement techniques for non-load-carrying transverse attachment joints with single-sided fillet welds and made of mild and ultra-high-strength steels

2021

Publication type

A1 Journal article (refereed), original research

Author(s)

Ahola Antti, Skriko Tuomas, Lipiäinen Kalle, Björk Timo

Overview on the digitized production of welded steel structures (IIW Doc. XV-1631-2021)

Skriko Tuomas, Ahola Antti, Björk Timo

Other Focus Area

LUT School of Energy Systems

Structural performance of laser welded edge joints made of high-strength steel

2021

Publication type

A4 Conference proceedings

Author(s)

Peippo Juha, Ahola Antti, Björk Timo, Salminen Antti

Other Focus Area

LUT School of Energy Systems

Weld root fatigue assessment of load-carrying fillet welded joints: 4R method compared to other methods

2021

Publication type

A1 Journal article (refereed), original research

Author(s)

Rohani Raftar Hamidreza, Dabiri Edris, Ahola Antti, Björk Timo

Fatigue strength assessment of ground fillet-welded joints using 4R method

2020

Publication type

A1 Journal article (refereed), original research

Author(s)

Ahola Antti, Muikku Arttu, Braun Moritz, Björk Timo

Fatigue strength assessment of ground fillet-welded steel joints using 4R method (IIW-Doc. XIII-2862-2020)

Ahola Antti, Muikku Arttu, Braun Moritz, Björk Timo

Other Focus Area

LUT School of Energy Systems

Fatigue strength assessment of TIG-dressed ultra-high-strength steel fillet weld joints using the 4R method

2020

Publication type

A1 Journal article (refereed), original research

Author(s)

Mettänen Heli, Nykänen Timo, Skriko Tuomas, Ahola Antti, Björk Timo

Fatigue strength characterization of high and ultra-high-strength steel cut edges

2020

Publication type

A1 Journal article (refereed), original research

Author(s)

Lipiäinen Kalle, Ahola Antti, Skriko Tuomas, Björk Timo

Fatigue strength of misaligned non-load-carrying cruciform joints made of ultra-high-strength steel

2020

Publication type

A1 Journal article (refereed), original research

Author(s)

Ahola Antti, Björk Timo

Finite element simulation of welding distortions in ultra-high strength steel S960 MC including comprehensive thermal and solid-state phase transformation models

2020

Publication type

A1 Journal article (refereed), original research

Author(s)

Ghafouri Mehran, Ahn Joseph, Mourujärvi Juho, Björk Timo, Larkiola Jari

Mechanical properties and microstructural evaluation of the heat-affected zone in ultra-high strength steels

2020

Publication type

A1 Journal article (refereed), original research

Author(s)

Amraei Mohsen, Afkhami Shahriar, Javaheri Vahid, Larkiola Jari, Skriko Tuomas, Björk Timo, Zhao Xiao-Ling

On the distortion and warping of cantilever beams with hollow section

2020

Publication type

A1 Journal article (refereed), original research

Author(s)

Björk Timo, Ahola Antti, Skriko Tuomas

Re-evaluation of weld root fatigue strength for load-carrying fillet welded joints using the notch stress concept

2020

Publication type

A1 Journal article (refereed), original research

Author(s)

Rohani Raftar Hamidreza, Dabiri Mohammad, Ahola Antti, Björk Timo

Use of the quasi-static Johnson-Cook model in the failure assessment of tensile specimens with metallurgical constraints

2020

Publication type

A1 Journal article (refereed), original research

Author(s)

Neuvonen Riku, Skriko Tuomas, Björk Timo

Bond characteristics between high/ultra-high strength steel and ultra-high modulus CFRP laminates

2019

Publication type

A1 Journal article (refereed), original research

Author(s)

Amraei Mohsen, Zhao Xiao-Ling, Björk Timo, Heidarpour Amin

Bonded CFRP to high strength steels

2019

Publication type

A1 Journal article (refereed), original research

Author(s)

Amraei Mohsen, Zong Lingjia, Ahola Antti, Björk Timo

Distortional buckling of X‐joints made of square hollow cross‐section beams: theoretical energy‐based model

2019

Publication type

A1 Journal article (refereed), original research

Author(s)

Björk Timo, Ahola Antti, Tuominen Niko

Effective parameters on the fatigue life of metals processed by powder bed fusion technique: A short review

2019

Publication type

A2 Review article, literature review, systematic review

Author(s)

Afkhami Shahriar, Piili Heidi, Salminen Antti, Björk Timo

Effects of heat input on the mechanical properties of butt-welded high and ultra-high strength steels

2019

Publication type

A1 Journal article (refereed), original research

Author(s)

Amraei Mohsen, Ahola Antti, Afkhami Shahriar, Björk Timo, Heidarpour Amin, Zhao Xiao-Ling

Experimental investigation on the fatigue strength assessment of welded joints made of S1100 ultra-high-strength steel in as-welded and post-weld treated condition

2019

Publication type

A4 Conference proceedings

Author(s)

Ahola Antti, Skriko Tuomas, Björk Timo

Fatigue analysis on the transverse fillet-welded joints made of ultra-high-strength steel - mean stress correction using 4R method (IIW-Doc. XIII-2779-19)

Ahola Antti, Skriko Tuomas, Björk Timo

Other Focus Area

LUT School of Energy Systems

Fatigue characteristics of steels manufactured by selective laser melting

2019

Publication type

A1 Journal article (refereed), original research

Author(s)

Afkhami Shahriar, Dabiri Mohammad, Alavi S. Habib, Björk Timo, Salminen Antti

Fatigue strength assessment of ultra-high-strength steel fillet weld joints using 4R method

2019

Publication type

A1 Journal article (refereed), original research

Author(s)

Ahola Antti, Skriko Tuomas, Björk Timo

Fatigue strength capacity of load-carrying fillet welds on ultra-high-strength steel plates subjected to out-of-plane bending

2019

Publication type

A1 Journal article (refereed), original research

Author(s)

Ahola Antti, Björk Timo, Barsoum Zuheir

Fatigue strength of welded tubular T-joints made of ferritic stainless steel in as-welded and post-weld treated condition

2019

Publication type

A4 Conference proceedings

Author(s)

Koskimäki Matti, Tuominen Niko, Ahola Antti, Björk Timo

Moniaksiaalisen kuormitushistorian ääriarvopistedatan sykliluokitus Wang-Brown-menetelmän avulla

2019

Publication type

A1 Journal article (refereed), original research

Author(s)

Yanchukovich Alexei, Ahola Antti, Björk Timo

On the distortion and warping of cantilever beam with hollow section (IIW-Doc. XV-1606-19)

Björk Timo, Ahola Antti, Skriko Tuomas

Other Focus Area

LUT School of Energy Systems

Weldability of cold-formed high strength and ultra-high strength steels

2019

Publication type

A1 Journal article (refereed), original research

Author(s)

Afkhami Shahriar, Björk Timo, Larkiola Jari

4R method for consideration of the fatigue performance of welded joints - Background and applications

2018

Publication type

B3 Unrefereed conference proceedings

Author(s)

Björk Timo, Ahola Antti, Skriko Tuomas

Other Focus Area

LUT School of Energy Systems

Evaluation of Strain–Life Fatigue Curve Estimation Methods and Their Application to a Direct-Quenched High-Strength Steel

2018

Publication type

A1 Journal article (refereed), original research

Author(s)

Dabiri Mohammad, Ghafouri Mehran, Rohani Raftar Hamidreza, Björk Timo

Fatigue Performance of GMA-Brazed Non-load Carrying Joints Made of Ultra-High-Strength Steel

2018

Publication type

A4 Conference proceedings

Author(s)

Ahola Antti, Skriko Tuomas, Björk Timo

Fatigue strength assessment of duplex and super-duplex stainless steels by 4R method

2018

Publication type

A1 Journal article (refereed), original research

Author(s)

Björk Timo, Mettänen Heli, Ahola Antti, Lindgren Mari, Terva Juuso

Local Buckling of Welded Box Beams Made of Ultrahigh-Strength Steels

2018

Publication type

A1 Journal article (refereed), original research

Author(s)

Hämäläinen Olli-Pekka, Halme Tapani, Björk Timo

On the design of fillet welds made of ultra-high-strength steel

2018

Publication type

A1 Journal article (refereed), original research

Author(s)

Björk Timo, Ahola Antti, Tuominen Niko

Mechanical Engineering

LUT School of Energy Systems

Utilizing the theory of critical distances in conjunction with crystal plasticity for low-cycle notch fatigue analysis of S960 MC high-strength steel

2018

Publication type

A1 Journal article (refereed), original research

Author(s)

Dabiri Mohammad, Lindroos Matti, Andersson Tom, Afkhami Shahriar, Laukkanen Anssi,
Björk Timo

Estimation of stress concentration factor in butt and T-welded joints utilizing artificial neural network-based models

2017

Publication type

A1 Journal article (refereed), original research

Author(s)

Dabiri Mohammad, Ghafouri Mehran, Björk Timo

Fatigue analysis of notched specimens made of direct-quenched ultra-high-strength steel under constant amplitude loading

2017

Publication type

A4 Conference proceedings

Author(s)

Dabiri Mohammad, Björk Timo

Fatigue strength assessment of duplex and super-duplex stainless steels by 4R method (IIW-Doc. XIII-2683-17)

2017

Publication type

D4 Published development or research report or study

Author(s)

Björk Timo, Mettänen Heli, Ahola Antti, Lindgren Mari

Other Focus Area

LUT School of Energy Systems

Kuormitustavan ja symmetrisyyden vaikutus kuormaa kantamattomien hitsausliitosten väsymiseen – tehollisen lovijännityksen ja murtumismekaniikan menetelmien vertailu

2017

Publication type

A1 Journal article (refereed), original research

Author(s)

Ahola Antti, Mettänen Heli, Björk Timo

On the design of fillet welds made of UHSS (IIW-Doc. XV-1547-17)

2017

Publication type

D4 Published development or research report or study

Author(s)

Björk Timo, Ahola Antti, Tuominen Niko

Other Focus Area

LUT School of Energy Systems

Utilizing artificial neural networks for stress concentration factor calculation in butt welds

2017

Publication type

A1 Journal article (refereed), original research

Author(s)

Dabiri Mohammad, Ghafouri Mehran, Rohani Raftar Hamidreza, Björk Timo

X-liitoksen vinoutumisnurjahdus

2017

Publication type

A4 Conference proceedings

Author(s)

Björk Timo, Tuominen Niko Petteri, Ahola Antti

3R-menetelmän käyttö vaihtuva-amplitudisesti kuormitettujen hitsausliitosten väsymisanalysoinnissa

2016

Publication type

A1 Journal article (refereed), original research

Author(s)

Nykänen Timo, Mettänen Heli, Ahola Antti, Skriko Tuomas, Hämäläinen Olli-Pekka, Björk Timo

A novel method for fatigue assessment of steel plates with thermally cut edges

2016

Publication type

D4 Published development or research report or study

Author(s)

Peippo Juha, Björk Timo, Nykänen Timo

Other Focus Area

LUT School of Energy Systems

Effect of loading type on the fatigue strength of asymmetric and symmetric transverse non-load carrying attachments

2016

Publication type

A1 Journal article (refereed), original research

Author(s)

Ahola Antti, Nykänen Timo, Björk Timo

Effect of side grooves on plane stress fracture behavior of compact tension specimens made of ultra-high strength steel

2016

Publication type

A4 Conference proceedings

Author(s)

Dabiri Mohammad, Skriko Tuomas, Amraei Mohsen, Björk Timo

Effect of the welding process and filler material on the fatigue behavior of 960 MPa structural steel at a butt joint configuration

2016

Publication type

A1 Journal article (refereed), original research

Author(s)

Siltanen Jukka, Skriko Tuomas, Björk Timo

Effects of fabrication processes on the deformation capacity of S960 ultra-high strength steel

2016

Publication type

A1 Journal article (refereed), original research

Author(s)

Amraei Mohsen, Dabiri Mohammad, Björk Timo, Skriko Tuomas

Experimental fatigue characterization and finite element analysis of elasto-plastic behavior of notched specimens made of direct-quenched ultra-high strength steel

2016

Publication type

A1 Journal article (refereed), original research

Author(s)

Dabiri Mohammad, Isakov Matti, Skriko Tuomas, Bjork Timo

Fatigue assessment of welded joints under variable amplitude loading using a novel notch stress approach

2016

Publication type

A1 Journal article (refereed), original research

Author(s)

Nykänen Timo, Mettänen Heli, Björk Timo, Ahola Antti

Fatigue strength of TIG-dressed ultra-high-strength steel fillet weld joints at high stress ratio

2016

Publication type

A1 Journal article (refereed), original research

Author(s)

Skriko Tuomas, Ghafouri Mehran, Björk Timo

Engineering

LUT School of Energy Systems

Neural network-based assessment of the stress concentration factor in a T-welded joint

2016

Publication type

A1 Journal article (refereed), original research

Author(s)

Dabiri Mohammad, Ghafouri Mehran, Rohani Raftar Hamidreza, Björk Timo

Mechanical Engineering

LUT School of Energy Systems

On the critical plane of axially loaded plate structures made of ultra-high strength steel

2016

Publication type

A1 Journal article (refereed), original research

Author(s)

Björk Timo, Nykänen Timo, Valkonen Ilkka

Plastic strain characteristics of butt-welded ultra-high strength steel (UHSS)

2016

Publication type

A1 Journal article (refereed), original research

Author(s)

Amraei Mohsen, Skriko Tuomas, Björk Timo, Zhao Xiao-Ling

Punching shear capacity of T-joint made of high-strength steel

2016

Publication type

A1 Journal article (refereed), original research

Author(s)

Björk Timo, Ahola Antti, Nykänen Timo

Engineering

Materials Science

LUT School of Energy Systems

Sekundäärisen momentin vaikutus hitsin lujuuteen

2016

Publication type

A1 Journal article (refereed), original research

Author(s)

Tuominen Niko, Björk Timo, Litmanen Jesse

Suojausterästen materiaalimallit

2016

Publication type

A2 Review article, literature review, systematic review

Author(s)

Neuvonen Riku, Björk Timo, Skriko Tuomas

A new proposal for assessment of the fatigue strength of steel butt-welded joints improved by peening (HFMI) under constant amplitude tensile loading

2015

Publication type

A1 Journal article (refereed), original research

Author(s)

Nykänen Timo, Bjork Timo

Engineering

Materials Science

LUT School of Energy Systems

A new proposal for the assessment of fatigue strength of steel butt-welded joints improved by peening

2015

Publication type

B3 Unrefereed conference proceedings

Author(s)

Nykänen Timo, Bjork Timo

Other Focus Area

Mechanical Engineering

Engineering

Materials Science

LUT School of Energy Systems

Assessment of fatigue strength of steel butt-welded joints in as-welded condition – Alternative approaches for curve fitting and mean stress effect analysis

2015

Publication type

A1 Journal article (refereed), original research

Author(s)

Nykänen Timo, Björk Timo

Engineering

Materials Science

LUT School of Energy Systems

Effect of the secondary bending moment on K-joint capacity

2015

Publication type

A4 Conference proceedings

Author(s)

Björk Timo, Tuominen Niko, Lähde Tuomas

Effects of Laser Weld Parameters on the Strength Properties of Weld Joints in Armor Steel

2015

Publication type

A4 Conference proceedings

Author(s)

Neuvonen Riku, Björk Timo

Fatigue Microcrack Nucleation Modeling: A Survey of the State of the Art

2015

Publication type

A1 Journal article (refereed), original research

Author(s)

Dabiri Mohammad, Laukkanen Anssi, Bjork Timo

Fatigue Strength of Ferritic Stainless Steel Rectangular Hollow Section T-Joints As-welded and Post Treated Conditions.

2015

Publication type

B3 Unrefereed conference proceedings

Author(s)

Koskimäki Matti, Tuominen Niko, Björk Timo

Engineering

LUT School of Energy Systems

Fretting fatigue phenomenon in bolted high-strength steel plate connections

2015

Publication type

A4 Conference proceedings

Author(s)

Hämäläinen, Olli-Pekka, Björk, Timo

Fretting fatigue phenomenon in bolted high-strength steel plate connections

2015

Publication type

A1 Journal article (refereed), original research

Author(s)

Hämäläinen Olli-Pekka, Björk Timo

Novel notch stress approach for fatigue design of butt welded joints improved by peening

Nykänen Timo, Bjork Timo

On the critical plane of axially loaded plate structures made of ultra high strength steel (IIW Doc. XV-1492-15)

2015

Publication type

D4 Published development or research report or study

Author(s)

Björk Timo, Salo Joel, Nykänen Timo, Valkonen Ilkka

Other Focus Area

Engineering

Materials Science

LUT School of Energy Systems

Warping of a tubular mat

2015

Publication type

B3 Unrefereed conference proceedings

Author(s)

Pöllänen Ilkka, Bjork Timo, Martikka Heikki

Capacity of a Welded Structure of Direct-Quenched Ultra-High-Strength Structural Steels

2014

Publication type

B3 Unrefereed conference proceedings

Author(s)

Björk Timo, Valkonen Ilkka, Kömi Jukka, Idren Hannu

Engineering

Materials Science

Effects of weaving technique on the fatigue strength of transverse loaded fillet welds made of ultra-high-strength steel

2014

Publication type

A1 Journal article (refereed), original research

Author(s)

Skriko T, Björk T, Nykänen T, Skriko T

Fatigue strength of steel butt-welded joints in as-welded conditionEvaluation of current practice and alternative considerations

Nykänen Timo, Bjork Timo

Engineering

Metals and Alloys

LUT School of Energy Systems

Hitsausliitokset

2014

Publication type

B2 Unrefereed book section

Author(s)

Bjork Timo

Mechanical Engineering

Civil and Structural Engineering

Low-temperature ductility and structural behaviour of cold-formed hollow section structures- process during the past two decades

2014

Publication type

A2 Review article, literature review, systematic review

Author(s)

Ritakallio Pekka, Björk Timo

Engineering

Punching shear capacity of T-joint made of high strength steel plates (IIW Doc. XV-1471-14)

2014

Publication type

D4 Published development or research report or study

Author(s)

Bjork Timo, Forsström L, Ahola Antti, Nykänen Timo

Engineering

LUT School of Energy Systems

Residual strength at -40o C of a pre-cracked cold-formed rectangular hollow section made of ultra-high-strength steel – An engineering approach

2014

Publication type

A1 Journal article (refereed), original research

Author(s)

Nykänen T, Björk T, Mettänen H, Ilyin A V, Koskimäki M

Rotation capacity of fillet weld joints made of high-strength steel

2014

Publication type

A1 Journal article (refereed), original research

Author(s)

Björk Timo, Penttilä Timo, Nykänen Timo

Ultimate Capacity of Welded Joints Made of High Strength Steel CFRHS

2014

Publication type

A4 Conference proceedings

Author(s)

Niko Tuominen, Timo Björk

Comparison of different methods for fatigue assessment of vibrating welded structures

2013

Publication type

D4 Published development or research report or study

Author(s)

Mettänen H, Björk T, Nykänen T

Effects of welding weaving technique on the fatigue strength of transverse loaded fillet welds made of ultra-high-strength steel (IIW-Doc. XIII-2473-13)

2013

Publication type

D4 Published development or research report or study

Author(s)

Skriko T, Björk T, Nykänen T

Fatigue strength prediction of ultra high strength steel butt welded joints

2013

Publication type

A1 Journal article (refereed), original research

Author(s)

Nykänen Timo, Björk Timo, Laitinen Risto

Mechanical Engineering

LUT School of Energy Systems

Optimization of the Cross-Section of a Beam Subjected to Bending Load

2013

Publication type

A4 Conference proceedings

Author(s)

Hämäläinen Olli-Pekka, Björk Timo

Mechanical Engineering

Engineering

LUT School of Energy Systems

Rotation capacity of fillet weld joints made of high strength steel. IIW-Doc. XV-1445-13

2013

Publication type

D4 Published development or research report or study

Author(s)

Björk T, Viitala A, Penttilä T, Nykänen T

Sub-modeling Approach for Obtaining Structural Stress Histories during Dynamic Analysis

2013

Publication type

A1 Journal article (refereed), original research

Author(s)

Rantalainen T., Mikkola A., Björk T.

Väsytyskuormitetun UHSS-rakenneputken äärikestävyys alhaisissa käyttölämpötiloissa (Residual strength at -40o C of a pre-cracked cold-formed rectangular hollow section made of ultra-high-strength steel - An engineering approach)

Nykänen Timo, Björk Timo, Mettänen Heli, Ilyin A V, Koskimäki Matti

Capacity of fillet welded joints made of ultra high strength steel

2012

Publication type

A1 Journal article (refereed), original research

Author(s)

Björk Timo, Toivonen Joe, Nykänen Timo

Mechanical Engineering

LUT School of Energy Systems

Static strength and fracture characteristics of new ultra-high-strength steels with yield strengths 900 - 960 MPa

2010

Publication type

A4 Conference proceedings

Author(s)

Nevasmaa Pekka, Karjalainen-Roikonen Päivi, Laukkanen Anssi, Nykänen Timo, Ameri T, Björk Timo, Limnell Teijo, Kuoppala Juha

Mechanical Engineering

LUT School of Energy Systems

Static strength of fillet weld joints made of ultra high strength steel

2010

Publication type

D4 Published development or research report or study

Author(s)

Björk Timo, Toivonen J, Nykänen Timo

Other Focus Area

Mechanical Engineering

LUT School of Energy Systems

A simplified fatigue assessment method for high quality welded cruciform joints

2009

Publication type

A1 Journal article (refereed), original research

Author(s)

Nykänen Timo, Marquis Gary, Björk Timo

Fatigue crack patterns in ultrasonic peened welded structures during constant and variable amplitude loading

2009

Publication type

D3 Professional conference proceedings

Author(s)

Marquis Gary, Nykänen Timo, Björk Timo

Fatigue strength of ultra high strength steel butt-welded joints under constant amplitude loading

2009

Publication type

D4 Published development or research report or study

Author(s)

Nykänen Timo, Björk Timo, Koskimäki Matti, Laitinen Risto

An Assessment of Fatigue Strength of Load Carrying Joints with 2D and 3D Lack of Penetration

2007

Publication type

D3 Professional conference proceedings

Author(s)

Oinonen Ahti, Nykänen Timo, Björk Timo, Marquis Gary

Approximative master curve for fatigue assessment of cruciform joints with non-load-carrying welds

2007

Publication type

D4 Published development or research report or study

Author(s)

Nykänen Timo, Marquis Gary, Björk Timo

Effect of weld geometry on the fatigue strength of fillet welded cruciform joints

2007

Publication type

D3 Professional conference proceedings

Author(s)

Nykänen Timo, Marquis Gary, Björk Timo

Effect of weld toe radius on the fatigue strength of fillet welded cruciform joints

Nykänen Timo, Marquis Gary, Björk Timo

Fields of Research

Engineering

LUT School of Energy Systems

Fatigue analysis of non-load-carrying fillet welded cruciform joints

2007

Publication type

D3 Professional conference proceedings

Author(s)

Nykänen Timo, Marquis Gary, Björk Timo, Makkapati Sri Harsha

Fatigue analysis of non-load-carrying fillet welded cruciform joints

2007

Publication type

A1 Journal article (refereed), original research

Author(s)

Nykänen Timo, Marquis Gary, Björk Timo

Hitsin laatu

2007

Publication type

D4 Published development or research report or study

Author(s)

Björk Timo, Nykänen Timo, Marquis Gary

Simplified assessment of weld quality for fatigue loaded cruciform joints

2007

Publication type

D4 Published development or research report or study

Author(s)

Nykänen Timo, Marquis Gary, Björk Timo

Sylinteriliitoksen väsymislujuus

2007

Publication type

D4 Published development or research report or study

Author(s)

Koskimäki Matti, Björk Timo, Nykänen Timo

Fluid Flow and Transfer Processes

Energy (miscellaneous)

LUT School of Energy Systems

Effect of local geometrical variations on the fatigue strength of fillet welded joints

2006

Publication type

D3 Professional conference proceedings

Author(s)

Nykänen Timo, Marquis Gary, Björk Timo

Fatigue strength of a Metso PanelBoard drum

Nykänen Timo, Björk Timo, Lihavainen Veli-Matti, Rajamäki Pekka, Heikkinen Antti

Fracture mechanics and parametric equations for fatigue strength

2006

Publication type

D4 Published development or research report or study

Author(s)

Nykänen Timo, Marquis Gary, Björk Timo

A parametric fracture mechanics study of welded joints with toe cracks and lack of penetration

2005

Publication type

A2 Review article, literature review, systematic review

Author(s)

Nykänen Timo, Li Xiaoyan, Björk Timo, Marquis Gary

Mechanical Engineering

LUT School of Energy Systems

Fatigue analysis of non-load-carrying fillet welded cruciform joints

2005

Publication type

D4 Published development or research report or study

Author(s)

Nykänen Timo, Marquis Gary, Björk Timo, Makkapati Sri Harsha

Mechanical Engineering

LUT School of Energy Systems

Sylinteriputken päittäishitsin väsymistarkastelu

2004

Publication type

D4 Published development or research report or study

Author(s)

Nykänen Timo, Björk Timo, Lihavainen Veli-Matti, Rajamäki Pekka, Heikkinen Antti

Mechanical Engineering

LUT School of Energy Systems

Sylinteriputken päittäishitsin väsymistrakastelu

2004

Publication type

D4 Published development or research report or study

Author(s)

Björk Timo, Nykänen Timo, Lihavainen Veli-Matti, Rajamäki Pekka, Heikkinen Antti

Mechanical Engineering

LUT School of Energy Systems

A parametric fracture mechanics analysis of a single fillet welded T-joint

2003

Publication type

D3 Professional conference proceedings

Author(s)

Nykänen Timo, Björk Timo, Marquis Gary

Mechanical Engineering

LUT School of Energy Systems

Herätinkoneen hitsin kestävyyden selvittäminen

2003

Publication type

D4 Published development or research report or study

Author(s)

Järvinen Vesa, Mäkinen Antti, Eriksson Markku, Björk Timo, Nykänen Timo

Mechanical Engineering

LUT School of Energy Systems

Researcher profiles

Orcid id

Timo Björk

Biography

Publications links

Researcher profiles