RTU Research Outputs and Resources: Reasearch Staff

Information about Author

Name, Surname:

Jānis Vārna

Department:

(31200) Augstas veiktspējas materiālu un konstrukciju institūts

Scientific Degree:

Doktors

E-mail:

Janis.Varna_3(at)rtu.lv

Publications

39 items found, displaying 21 to 30.

On Temperature-Related Shift Factors and Master Curves in Viscoelastic Constitutive Models for Thermoset Polymers
(2020)

Stephanie Goncalves Nunes, Sibin Saseendran, Roberts Joffe, Sandro Amico, Patrik Fernberg, Jānis Vārna
Scientific article indexed in SCOPUS or WOS database

Characterization of Viscoelasticity, Viscoplasticity, and Damage in Composites
(2019)

Jānis Vārna, Līva Pupure
Article in a collection of scientific publications or a chapter in a monograph indexed in SCOPUS or WOS database

Effect of Degree of Cure on Viscoplastic Shear Strain Development in Layers of [45/−45]s Glass Fibre/ Epoxy Resin Composites
(2018)

Līva Pupure, Sibin Sassendran, Jānis Vārna, Margherita Basso
Scientific article indexed in SCOPUS or WOS database

Methodology for Macro-Modeling of Bio-Based Composites with Inelastic Constituents
(2018)

Līva Pupure, Jānis Vārna, Roberts Joffe
Scientific article indexed in SCOPUS or WOS database

Statistical Model for Initiation Governed Intralaminar Cracking in Composite Laminates during Tensile Quasi-Static and Cyclic Tests
(2018)

H Ben Kahla, Z Ayadi, F Edgren, Andrejs Pupurs, Jānis Vārna
Scientific article indexed in SCOPUS or WOS database

A Study of Transverse Crack Formation in Fiber-Reinforced Composites by Growth of Fiber-Matrix Debonds
(2017)

L Zhuang, R Talreja, Andrejs Pupurs, Jānis Vārna
Full-text conference paper published in conference proceedings indexed in SCOPUS or WOS database

Growth and Interaction of Debonds in Local Clusters of Fibers in Unidirectional Composites during Transverse Loading
(2017)

Jānis Vārna, L Zhuang, Andrejs Pupurs, Z Ayadi
Scientific article indexed in SCOPUS or WOS database

Projects

3 items found, displaying 1 to 3.

Būvniecības un rekonstrukcijas institūts (34-24200-N7045.1)
Citi

Leonīds Pakrastiņš

Jaunie "gudrie" nano-komozītie materiāli ceļiem, tiltiem, būvēm un transporta mašīnām
Materiālu tehnoloģija

Andrejs Krasņikovs

Materiālu Eksperimentālās Mehānikas Zinātniskā laboratorija (MEMZL)
Mašīnbūve

Andrejs Pupurs

Information about Author

Publications

On Temperature-Related Shift Factors and Master Curves in Viscoelastic Constitutive Models for Thermoset Polymers
(2020)

Characterization of Viscoelasticity, Viscoplasticity, and Damage in Composites
(2019)

Effect of Degree of Cure on Viscoplastic Shear Strain Development in Layers of [45/−45]s Glass Fibre/ Epoxy Resin Composites
(2018)

Methodology for Macro-Modeling of Bio-Based Composites with Inelastic Constituents
(2018)

Statistical Model for Initiation Governed Intralaminar Cracking in Composite Laminates during Tensile Quasi-Static and Cyclic Tests
(2018)

A Study of Transverse Crack Formation in Fiber-Reinforced Composites by Growth of Fiber-Matrix Debonds
(2017)

Growth and Interaction of Debonds in Local Clusters of Fibers in Unidirectional Composites during Transverse Loading
(2017)

Fiber/Matrix Debond Growth from Fiber Break in Unidirectional Composite with Local Hexagonal Fiber Clustering
(2016)

Incremental Forms of Schapery’s Model: Convergence and Inversion to Simulate Strain Controlled Ramps
(2016)

Natural Fiber Composite: Challenges Simulating Inelastic Response in Strain-Controlled Tensile Tests
(2016)

Projects

Būvniecības un rekonstrukcijas institūts (34-24200-N7045.1)
Citi

Jaunie "gudrie" nano-komozītie materiāli ceļiem, tiltiem, būvēm un transporta mašīnām
Materiālu tehnoloģija

Materiālu Eksperimentālās Mehānikas Zinātniskā laboratorija (MEMZL)
Mašīnbūve

Information about Author

Publications

On Temperature-Related Shift Factors and Master Curves in Viscoelastic Constitutive Models for Thermoset Polymers (2020)

Characterization of Viscoelasticity, Viscoplasticity, and Damage in Composites (2019)

Effect of Degree of Cure on Viscoplastic Shear Strain Development in Layers of [45/−45]s Glass Fibre/ Epoxy Resin Composites (2018)

Methodology for Macro-Modeling of Bio-Based Composites with Inelastic Constituents (2018)

Statistical Model for Initiation Governed Intralaminar Cracking in Composite Laminates during Tensile Quasi-Static and Cyclic Tests (2018)

A Study of Transverse Crack Formation in Fiber-Reinforced Composites by Growth of Fiber-Matrix Debonds (2017)

Growth and Interaction of Debonds in Local Clusters of Fibers in Unidirectional Composites during Transverse Loading (2017)

Fiber/Matrix Debond Growth from Fiber Break in Unidirectional Composite with Local Hexagonal Fiber Clustering (2016)

Incremental Forms of Schapery’s Model: Convergence and Inversion to Simulate Strain Controlled Ramps (2016)

Natural Fiber Composite: Challenges Simulating Inelastic Response in Strain-Controlled Tensile Tests (2016)

Projects

Būvniecības un rekonstrukcijas institūts (34-24200-N7045.1) Citi

Jaunie "gudrie" nano-komozītie materiāli ceļiem, tiltiem, būvēm un transporta mašīnām Materiālu tehnoloģija

Materiālu Eksperimentālās Mehānikas Zinātniskā laboratorija (MEMZL) Mašīnbūve

On Temperature-Related Shift Factors and Master Curves in Viscoelastic Constitutive Models for Thermoset Polymers
(2020)

Characterization of Viscoelasticity, Viscoplasticity, and Damage in Composites
(2019)

Effect of Degree of Cure on Viscoplastic Shear Strain Development in Layers of [45/−45]s Glass Fibre/ Epoxy Resin Composites
(2018)

Methodology for Macro-Modeling of Bio-Based Composites with Inelastic Constituents
(2018)

Statistical Model for Initiation Governed Intralaminar Cracking in Composite Laminates during Tensile Quasi-Static and Cyclic Tests
(2018)

A Study of Transverse Crack Formation in Fiber-Reinforced Composites by Growth of Fiber-Matrix Debonds
(2017)

Growth and Interaction of Debonds in Local Clusters of Fibers in Unidirectional Composites during Transverse Loading
(2017)

Fiber/Matrix Debond Growth from Fiber Break in Unidirectional Composite with Local Hexagonal Fiber Clustering
(2016)

Incremental Forms of Schapery’s Model: Convergence and Inversion to Simulate Strain Controlled Ramps
(2016)

Natural Fiber Composite: Challenges Simulating Inelastic Response in Strain-Controlled Tensile Tests
(2016)

Būvniecības un rekonstrukcijas institūts (34-24200-N7045.1)
Citi

Jaunie "gudrie" nano-komozītie materiāli ceļiem, tiltiem, būvēm un transporta mašīnām
Materiālu tehnoloģija

Materiālu Eksperimentālās Mehānikas Zinātniskā laboratorija (MEMZL)
Mašīnbūve