Abstract
Abstract: We present results of applying a combined approach to studying fatigue fracture processes in VT23 titanium alloy with a laser-welded joint. The approach involves fractographic examination using scanning electron microscopy and analysis of strain fields at the sample surface (using digital image correlation technique). Samples with permanent connections are presented in two forms: in the initial state and subjected to post-welding treatment by ultrasonic forging and pulsed high-energy impact. It is shown that applying the proposed integrated approach to the analysis of fatigue fracture has allowed identifying features in the development of processes of nucleation and propagation of cracks and locating them in the bulk of the material, as well as determining running times after which transition from one stage to another takes place: crack initiation, stable growth, and rupture. The results have made it possible to explain the mechanisms of how post-welding treatment of permanent joints affects their fatigue properties.
| Original language | English |
|---|---|
| Pages (from-to) | 384-392 |
| Number of pages | 9 |
| Journal | Russian Journal of Nondestructive Testing |
| Volume | 55 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 1 May 2019 |
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Keywords
- digital image correlation method
- fatigue
- fractographic examination
- laser welding
- post-welding treatment
- VT23 titanium alloy
- welded joints
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
Cite this
Applying Digital Image Correlation Technique for Studying the Growth of a Fatigue Crack in VT23 Titanium Alloy Welded Joints. / Eremin, A. V.; Smirnova, A. S.; Panin, S. V.; Pochivalov, Yu I.
In: Russian Journal of Nondestructive Testing, Vol. 55, No. 5, 01.05.2019, p. 384-392.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Applying Digital Image Correlation Technique for Studying the Growth of a Fatigue Crack in VT23 Titanium Alloy Welded Joints
AU - Eremin, A. V.
AU - Smirnova, A. S.
AU - Panin, S. V.
AU - Pochivalov, Yu I.
PY - 2019/5/1
Y1 - 2019/5/1
N2 - Abstract: We present results of applying a combined approach to studying fatigue fracture processes in VT23 titanium alloy with a laser-welded joint. The approach involves fractographic examination using scanning electron microscopy and analysis of strain fields at the sample surface (using digital image correlation technique). Samples with permanent connections are presented in two forms: in the initial state and subjected to post-welding treatment by ultrasonic forging and pulsed high-energy impact. It is shown that applying the proposed integrated approach to the analysis of fatigue fracture has allowed identifying features in the development of processes of nucleation and propagation of cracks and locating them in the bulk of the material, as well as determining running times after which transition from one stage to another takes place: crack initiation, stable growth, and rupture. The results have made it possible to explain the mechanisms of how post-welding treatment of permanent joints affects their fatigue properties.
AB - Abstract: We present results of applying a combined approach to studying fatigue fracture processes in VT23 titanium alloy with a laser-welded joint. The approach involves fractographic examination using scanning electron microscopy and analysis of strain fields at the sample surface (using digital image correlation technique). Samples with permanent connections are presented in two forms: in the initial state and subjected to post-welding treatment by ultrasonic forging and pulsed high-energy impact. It is shown that applying the proposed integrated approach to the analysis of fatigue fracture has allowed identifying features in the development of processes of nucleation and propagation of cracks and locating them in the bulk of the material, as well as determining running times after which transition from one stage to another takes place: crack initiation, stable growth, and rupture. The results have made it possible to explain the mechanisms of how post-welding treatment of permanent joints affects their fatigue properties.
KW - digital image correlation method
KW - fatigue
KW - fractographic examination
KW - laser welding
KW - post-welding treatment
KW - VT23 titanium alloy
KW - welded joints
UR - http://www.scopus.com/inward/record.url?scp=85070673888&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85070673888&partnerID=8YFLogxK
U2 - 10.1134/S1061830919050036
DO - 10.1134/S1061830919050036
M3 - Article
AN - SCOPUS:85070673888
VL - 55
SP - 384
EP - 392
JO - Russian Journal of Nondestructive Testing
JF - Russian Journal of Nondestructive Testing
SN - 1061-8309
IS - 5
ER -