PSI - Issue 18

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2019) 000–000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2019) 000–000

www.elsevier.com/locate/procedia www.elsevier.com/locate/procedia

ScienceDirect

Procedia Structural Integrity 18 (2019) 639–644

25th International Conference on Fracture and Structural Integrity Strength Assessment of a Titanium Alloys under Tensile Tests Based on the Analysis of Heat Sources Vedernikova A.*, Vshivkov A., Iziumova A., Plekhov O. a ICMMUrB RAS, Academika Koroleva st, 1, Perm 614013, Russia Abstract IR thermography is very useful non-destructive tools for investigate fracture mechanics behavior of materials. The dissipative effects in metals during plastic deformation and change in the internal structure leads to intensive heat generation in the areas in the strain localization zones. The infrared thermography provides a direct estimate of heat sources, especially intrinsic dissipation and thermoelastic sources, using the local heat equation. This work deals with the investigation of heat sources of a titanium alloys (Grade 2 and Ti-1Al-1Mn) during monotonic tensile tests and monitoring the state of material based on the heat source value. Experiments performed on flat specimens show that the value of the stored energy could be correlated with the mechanical behavior of the material. 25th International Conference on Fracture and Structural Integrity Strength Assessment of a Titanium Alloys under Tensile Tests Based on the Analysis of Heat Sources Vedernikova A.*, Vshivkov A., Iziumova A., Plekhov O. a ICMMUrB RAS, Academika Koroleva st, 1, Perm 614013, Russia Abstract IR thermography is very useful non-destructive tools for investig te fract re mechanics behavior of materials. T dissipativ effects in metals duri g plastic deformation and change in the internal structur leads to intensive heat generation in the areas in the strain localizati n zones. The infrared t rmogr phy provides a direct estimate of h at sources, especially intrinsic dissipation and thermoelastic sources, using the local heat equation. This work deals with t investigation of he t sources of a titanium alloys (Grade 2 and Ti-1Al-1M ) during o otonic tensile tests and monitoring the state of material based on the heat source value. Experi ents performed on flat specimens show that the value of the stored energy could be correlated with the mechanical behavior of the material.

© 2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Gruppo Italiano Frattura (IGF) ExCo. © 2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Gruppo Italiano Frattura (IGF) ExCo. © 2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Gruppo Italiano Frattura (IGF) ExCo.

Keywords: Thermography; Dissipated energy; Titanium alloys Keywords: Thermography; Dissipated energy; Titanium alloys

1. Introduction Now, many interesting surveys on creating models describing the material behavior during deformation processes and destruction. One promising approach for addressing these issues is based on energy considerations that allows to gain understanding issues concerning of dissipative and stored energy changes, the localization of damage (Rosakis et al. (2000), La Rosa et al. (2000), Benaarbiaa et al. (2014), Risitano et al. (2010), Fedorova et al. (2014)). The dissipative effects in metals during plastic deformation and change in the internal structure leads to intensive heat 1. Introduction Now, many interesting surveys on creating models describing the material behavior during deformation processes and destruction. One promising approach for addressing these issues is based on energy considerations that allows to gain understanding issues concerning of dissipative and stored energy changes, the localization of damage (Rosakis et al. (2000), La Rosa et al. (2000), Benaarbiaa et al. (2014), Risitano et al. (2010), Fedorova et al. (2014)). The dissipative effects in metals during plastic deformation and change in the internal structure leads to intensive heat

* Corresponding author. Tel.: +7-342-237-83-17. E-mail address: terekhina.a@icmm.ru * Correspon ing author. Tel.: +7-342-237-83-17. E-mail address: terekhina.a@icmm.ru

2452-3216 © 2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Gruppo Italiano Frattura (IGF) ExCo. 2452-3216 © 2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Gruppo Italiano Frattura (IGF) ExCo.

2452-3216  2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Gruppo Italiano Frattura (IGF) ExCo. 10.1016/j.prostr.2019.08.210