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D-Index & Metrics

Mechanical and Aerospace Engineering

D-Index
39
Citations
6030
World Ranking
2129
National Ranking
14

Research.com Recognitions

  • 2012 - Member of Academia Europaea

Overview

Janis Varna is affiliated with Luleå University of Technology in Sweden. Their research primarily spans the fields of engineering and materials science, with a particular focus on mechanics of materials and mechanical engineering. They have also contributed to subfields such as polymers and plastics, civil and structural engineering, and biomaterials.

The scientific work of Janis Varna includes extensive publication on topics related to the mechanical behavior of composites, fatigue and fracture mechanics, and composite structure analysis and optimization. Additional areas of focus are structural analysis of composite materials, polymer crystallization and properties, epoxy resin curing processes, and natural fiber reinforced composites.

  • Mechanical Behavior of Composites
  • Fatigue and fracture mechanics
  • Composite Structure Analysis and Optimization
  • Structural Analysis of Composite Materials
  • Polymer crystallization and properties
  • Epoxy Resin Curing Processes
  • Natural Fiber Reinforced Composites

Janis Varna has published in several scientific venues, frequently appearing in journals dedicated to composite materials and applied sciences.

  • Mechanics of Composite Materials
  • Composites Part A Applied Science and Manufacturing
  • Journal of Composite Materials
  • Applied Composite Materials
  • International Journal of Fatigue

Selected recent papers by Janis Varna include:

  • On Temperature-Related Shift Factors and Master Curves in Viscoelastic Constitutive Models for Thermoset Polymers, 2020, Mechanics of Composite Materials
  • Analysis of intralaminar cracking in 90-plies of GF/EP laminates with distributed ply strength, 2021, Journal of Composite Materials
  • Physical aging effect on viscoelastic behavior of polymers, 2021, Composites Part C Open Access
  • Impact of water absorption on the creep performance of epoxy/microcrystalline cellulose composites, 2024, Journal of Applied Polymer Science
  • Digital Image Correlation (DIC) Validation of Engineering Approaches for Bending Stiffness Determination of Damaged Laminates, 2022, Applied Composite Materials

Frequent co-authors collaborating with Janis Varna include Roberts Joffe, Andrejs Pupurs, Mohamed Sahbi Loukil, Patrik Fernberg, and Nawres Al-Ramahi. Each has contributed to multiple research projects, reflecting ongoing collaboration in related areas of composite materials and engineering.

Janis Varna has been recognized as a Member of Academia Europaea since 2012.

Best Publications

  • Damage in composite laminates with off-axis plies

    Janis Varna;Roberts Joffe;N.V. Akshantala;Ramesh Talreja

  • Effect of voids on failure mechanisms in RTM laminates

    J. Varna;R. Joffe;L.A. Berglund;T.S. Lundström

  • Analytical modeling of stiffness reduction in symmetric and balanced laminates due to cracks in 90° layers

    Roberts Joffe;Janis Varna

  • Multiple Transverse Cracking and Stiffness Reduction in Cross-Ply Laminates

    J Varna;L Berglund

  • Formation of damage and its effects on non-crimp fabric reinforced composites loaded in tension

    Fredrik Edgren;David Mattsson;Leif E. Asp;Janis Varna

  • Cod-based simulation of transverse cracking and stiffness reduction in [S/90n]s laminates

    Roberts Joffe;A. Krasnikovs;Janis Varna

  • Constitutive Relationships for Laminates with Ply Cracks in In-plane Loading

    P. Lundmark;Janis Varna

  • An evaluation of different models for prediction of elastic properties of woven composites

    Johan Byström;Normunds Jekabsons;Janis Varna

  • Transverse single-fibre test for interfacial debonding in composites: 1. Experimental observations

    H. Zhang;M.L. Ericson;Janis Varna;Lars A. Berglund

  • A synergistic damage-mechanics analysis of transverse cracking in [±θ/904]s laminates

    Janis Varna;Roberts Joffe;Ramesh Talreja

  • Effects of voids on quasi-static and tension fatigue behaviour of carbon-fibre composite laminates:

    Sanjay Sisodia;Sanjay Sisodia;E Kristofer Gamstedt;Fredrik Edgren;Janis Varna

  • Damage evolution under cyclic multiaxial stress state: A comparative analysis between glass/epoxy laminates and tubes

    Marino Quaresimin;P.A. Carraro;L.P. Mikkelsen;N. Lucato

  • Thermo-Elastic Properties of Composite Laminates with Transverse Cracks

    Janis Varna;Lars A. Berglund

  • Transverse single-fibre test for interfacial debonding in composites: 2. Modelling

    Janis Varna;Lars A. Berglund;M.L. Ericson

  • Crack face sliding effect on stiffness of laminates with ply cracks

    Peter Lundmark;Janis Varna

  • A Study of the Opening Displacement of Transverse Cracks in Cross-Ply Laminates

    Janis Varna;Lars A. Berglund;Ramesh Talreja;A. Jakovics

  • Damage in NCF composites under tension: Effect of layer stacking sequence

    David Mattsson;Roberts Joffe;Janis Varna

  • Methodology for characterization of internal structure parameters governing performance in NCF composites

    David Mattsson;Roberts Joffe;Janis Varna

  • The fiber-matrix interface crack — A numerical analysis using Boundary Elements

    F. Paris;J.C. Cano;Janis Varna

  • Modeling Damage, Fatigue and Failure of Composite Materials

    Ramesh Talreja;Janis Varna

  • Formation of damage and its Effect on Non-crimp Fabric Reinforced Composites Loaded in Tension

    David Mattsson;Janis Varna

Frequent Co-Authors

Lars Berglund
Lars Berglund Royal Institute of Technology
Ramesh Talreja
Ramesh Talreja Texas A&M University
Costas Galiotis
Costas Galiotis University of Patras
Göran Lindbergh
Göran Lindbergh Royal Institute of Technology
Mats Johansson
Mats Johansson Royal Institute of Technology
Karl J. Niklas
Karl J. Niklas Cornell University
Marino Quaresimin
Marino Quaresimin University of Padua

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