Effect of shot peening on <i>J</i>-integral and crack propagation rate of semi-elliptic surface crack on Ti6Al4V
Considering the residual stress, residual strain and residual strain energy, the influence of shot peening on the <i>J</i>-integral parameters of semi-elliptic surface crack front was quantitatively calculated and analyzed. The shot peening process was simulated, the fatigue crack was ge...
Main Authors: | , , , |
---|---|
Format: | Article |
Language: | zho |
Published: |
Journal of Materials Engineering
2019-01-01
|
Series: | Journal of Materials Engineering |
Subjects: | |
Online Access: | http://jme.biam.ac.cn/CN/Y2019/V47/I1/139 |
id |
doaj-25c05d14f00c437584c40ee05b343eae |
---|---|
record_format |
Article |
spelling |
doaj-25c05d14f00c437584c40ee05b343eae2020-11-25T00:41:59ZzhoJournal of Materials EngineeringJournal of Materials Engineering1001-43811001-43812019-01-0147113914610.11868/j.issn.1001-4381.2017.000545201901000545Effect of shot peening on <i>J</i>-integral and crack propagation rate of semi-elliptic surface crack on Ti6Al4VHOU Shuai0ZHU You-li1QIU Ji2NI Yong-heng3Department of Equipment Support and Remanufacturing, Army Academy of Armored Forces, Beijing 100072, ChinaDepartment of Equipment Support and Remanufacturing, Army Academy of Armored Forces, Beijing 100072, ChinaDepartment of Equipment Support and Remanufacturing, Army Academy of Armored Forces, Beijing 100072, ChinaDepartment of Equipment Support and Remanufacturing, Army Academy of Armored Forces, Beijing 100072, ChinaConsidering the residual stress, residual strain and residual strain energy, the influence of shot peening on the <i>J</i>-integral parameters of semi-elliptic surface crack front was quantitatively calculated and analyzed. The shot peening process was simulated, the fatigue crack was generated by changing the constraint condition and far field load was applied to calculate the <i>J</i>-integral and crack propagation rate. The effect of semi-elliptic surface cracks with different depth and different shot velocities on fracture parameters was analyzed. The results show that when shot velocity is a certain value, the reduction of the <i>J</i>-integral value after shot peening decreases with the increase of the crack depth compared with that without shot peening, which indicates that shot peening is more beneficial to suppress the fatigue crack propagation. When the crack depth is 0.3mm, the <i>J</i>-integral value of the deepest point of the crack front reduces from 4.25N/mm to 2.99N/mm, and the reduction is about 30.1%.The <i>J</i>-integral value decreases with the increase of shot velocity when crack depth is a certain value,therefore,increasing shot velocity is more beneficial to retard the fatigue crack propagation.http://jme.biam.ac.cn/CN/Y2019/V47/I1/139shot peeningresidual stress<i>J</i>-integralTi6Al4Vsemi-elliptic surface crack |
collection |
DOAJ |
language |
zho |
format |
Article |
sources |
DOAJ |
author |
HOU Shuai ZHU You-li QIU Ji NI Yong-heng |
spellingShingle |
HOU Shuai ZHU You-li QIU Ji NI Yong-heng Effect of shot peening on <i>J</i>-integral and crack propagation rate of semi-elliptic surface crack on Ti6Al4V Journal of Materials Engineering shot peening residual stress <i>J</i>-integral Ti6Al4V semi-elliptic surface crack |
author_facet |
HOU Shuai ZHU You-li QIU Ji NI Yong-heng |
author_sort |
HOU Shuai |
title |
Effect of shot peening on <i>J</i>-integral and crack propagation rate of semi-elliptic surface crack on Ti6Al4V |
title_short |
Effect of shot peening on <i>J</i>-integral and crack propagation rate of semi-elliptic surface crack on Ti6Al4V |
title_full |
Effect of shot peening on <i>J</i>-integral and crack propagation rate of semi-elliptic surface crack on Ti6Al4V |
title_fullStr |
Effect of shot peening on <i>J</i>-integral and crack propagation rate of semi-elliptic surface crack on Ti6Al4V |
title_full_unstemmed |
Effect of shot peening on <i>J</i>-integral and crack propagation rate of semi-elliptic surface crack on Ti6Al4V |
title_sort |
effect of shot peening on <i>j</i>-integral and crack propagation rate of semi-elliptic surface crack on ti6al4v |
publisher |
Journal of Materials Engineering |
series |
Journal of Materials Engineering |
issn |
1001-4381 1001-4381 |
publishDate |
2019-01-01 |
description |
Considering the residual stress, residual strain and residual strain energy, the influence of shot peening on the <i>J</i>-integral parameters of semi-elliptic surface crack front was quantitatively calculated and analyzed. The shot peening process was simulated, the fatigue crack was generated by changing the constraint condition and far field load was applied to calculate the <i>J</i>-integral and crack propagation rate. The effect of semi-elliptic surface cracks with different depth and different shot velocities on fracture parameters was analyzed. The results show that when shot velocity is a certain value, the reduction of the <i>J</i>-integral value after shot peening decreases with the increase of the crack depth compared with that without shot peening, which indicates that shot peening is more beneficial to suppress the fatigue crack propagation. When the crack depth is 0.3mm, the <i>J</i>-integral value of the deepest point of the crack front reduces from 4.25N/mm to 2.99N/mm, and the reduction is about 30.1%.The <i>J</i>-integral value decreases with the increase of shot velocity when crack depth is a certain value,therefore,increasing shot velocity is more beneficial to retard the fatigue crack propagation. |
topic |
shot peening residual stress <i>J</i>-integral Ti6Al4V semi-elliptic surface crack |
url |
http://jme.biam.ac.cn/CN/Y2019/V47/I1/139 |
work_keys_str_mv |
AT houshuai effectofshotpeeningonijiintegralandcrackpropagationrateofsemiellipticsurfacecrackonti6al4v AT zhuyouli effectofshotpeeningonijiintegralandcrackpropagationrateofsemiellipticsurfacecrackonti6al4v AT qiuji effectofshotpeeningonijiintegralandcrackpropagationrateofsemiellipticsurfacecrackonti6al4v AT niyongheng effectofshotpeeningonijiintegralandcrackpropagationrateofsemiellipticsurfacecrackonti6al4v |
_version_ |
1725284483769303040 |