Experimental Investigation of Ti-6al-4v Alloy Fatigue Crack Growth Parameters
Abstract
Analysis of stress and strain at the tip of fatigue crack by means of linear elastic fracture mechanics has led to the formulation of well known Paris’ equation which brings fatigue crack growth speed (da/dN) and stress intensity factor range at the crack tip (ΔK) in a relation.For the purpose of determining the fatigue crack growth parameters of titanium alloy Ti-6Al-4V a standard Charpy specimen was used and a three - point bending method on a resonating high - frequency pulsator. Standard fracture mechanics tests on notched specimens can provide insight into the fracture behaviour of materials under constrained deformation, i.e. under a threedimensional stress state. Specimens were taken from a plate with dimensions of 80x300x30 mm, made of Ti6Al-4V alloy. In order to monitor the increment of crack length, strain gauges were applied to the specimens.
The obtained frequency was in the range from 215 to 235 Hz, while the stress ratio was R=0.1. Average load
and it’s amplitude were r...egistered with the ±3 Ncm accuracy. All tests were conducted at room temperature.
Test results are intended for the finite element method (FEM) and extended finite element method (XFEM)
analysis of bone fixation implants made of Ti-6Al-4V alloy.
Keywords:
Ti-6Al-4V alloy / fatigue crack growth / stress intensity factor / experimental testing / fracture behaviourSource:
„International Conference of Experimental and Numerical Investigations and New Technologies“ CNN TECH 2019, 2019, 40-Funding / projects:
- Developed new methods for diagnosis and examination mechanical structures (RS-MESTD-Technological Development (TD or TR)-35040)
- Pressure equipment integrity under simultaneous effect of fatigue loading and temperature (RS-MESTD-Technological Development (TD or TR)-35011)
URI
http://cnntechno.com/docs/3_CNN_book_of_abstracts.pdfhttps://machinery.mas.bg.ac.rs/handle/123456789/6249
Collections
Institution/Community
Inovacioni centarTY - CONF AU - Vučetić, Filip AU - Čolić, Katarina AU - Đorđević, Branislav AU - Burzić, Meri AU - Donceva, Elisaveta PY - 2019 UR - http://cnntechno.com/docs/3_CNN_book_of_abstracts.pdf UR - https://machinery.mas.bg.ac.rs/handle/123456789/6249 AB - Analysis of stress and strain at the tip of fatigue crack by means of linear elastic fracture mechanics has led to the formulation of well known Paris’ equation which brings fatigue crack growth speed (da/dN) and stress intensity factor range at the crack tip (ΔK) in a relation.For the purpose of determining the fatigue crack growth parameters of titanium alloy Ti-6Al-4V a standard Charpy specimen was used and a three - point bending method on a resonating high - frequency pulsator. Standard fracture mechanics tests on notched specimens can provide insight into the fracture behaviour of materials under constrained deformation, i.e. under a threedimensional stress state. Specimens were taken from a plate with dimensions of 80x300x30 mm, made of Ti6Al-4V alloy. In order to monitor the increment of crack length, strain gauges were applied to the specimens. The obtained frequency was in the range from 215 to 235 Hz, while the stress ratio was R=0.1. Average load and it’s amplitude were registered with the ±3 Ncm accuracy. All tests were conducted at room temperature. Test results are intended for the finite element method (FEM) and extended finite element method (XFEM) analysis of bone fixation implants made of Ti-6Al-4V alloy. C3 - „International Conference of Experimental and Numerical Investigations and New Technologies“ CNN TECH 2019 T1 - Experimental Investigation of Ti-6al-4v Alloy Fatigue Crack Growth Parameters SP - 40 UR - https://hdl.handle.net/21.15107/rcub_machinery_6249 ER -
@conference{ author = "Vučetić, Filip and Čolić, Katarina and Đorđević, Branislav and Burzić, Meri and Donceva, Elisaveta", year = "2019", abstract = "Analysis of stress and strain at the tip of fatigue crack by means of linear elastic fracture mechanics has led to the formulation of well known Paris’ equation which brings fatigue crack growth speed (da/dN) and stress intensity factor range at the crack tip (ΔK) in a relation.For the purpose of determining the fatigue crack growth parameters of titanium alloy Ti-6Al-4V a standard Charpy specimen was used and a three - point bending method on a resonating high - frequency pulsator. Standard fracture mechanics tests on notched specimens can provide insight into the fracture behaviour of materials under constrained deformation, i.e. under a threedimensional stress state. Specimens were taken from a plate with dimensions of 80x300x30 mm, made of Ti6Al-4V alloy. In order to monitor the increment of crack length, strain gauges were applied to the specimens. The obtained frequency was in the range from 215 to 235 Hz, while the stress ratio was R=0.1. Average load and it’s amplitude were registered with the ±3 Ncm accuracy. All tests were conducted at room temperature. Test results are intended for the finite element method (FEM) and extended finite element method (XFEM) analysis of bone fixation implants made of Ti-6Al-4V alloy.", journal = "„International Conference of Experimental and Numerical Investigations and New Technologies“ CNN TECH 2019", title = "Experimental Investigation of Ti-6al-4v Alloy Fatigue Crack Growth Parameters", pages = "40", url = "https://hdl.handle.net/21.15107/rcub_machinery_6249" }
Vučetić, F., Čolić, K., Đorđević, B., Burzić, M.,& Donceva, E.. (2019). Experimental Investigation of Ti-6al-4v Alloy Fatigue Crack Growth Parameters. in „International Conference of Experimental and Numerical Investigations and New Technologies“ CNN TECH 2019, 40. https://hdl.handle.net/21.15107/rcub_machinery_6249
Vučetić F, Čolić K, Đorđević B, Burzić M, Donceva E. Experimental Investigation of Ti-6al-4v Alloy Fatigue Crack Growth Parameters. in „International Conference of Experimental and Numerical Investigations and New Technologies“ CNN TECH 2019. 2019;:40. https://hdl.handle.net/21.15107/rcub_machinery_6249 .
Vučetić, Filip, Čolić, Katarina, Đorđević, Branislav, Burzić, Meri, Donceva, Elisaveta, "Experimental Investigation of Ti-6al-4v Alloy Fatigue Crack Growth Parameters" in „International Conference of Experimental and Numerical Investigations and New Technologies“ CNN TECH 2019 (2019):40, https://hdl.handle.net/21.15107/rcub_machinery_6249 .