Specification for Cold Expansion Fittings with PEX Reinforcing Rings for Use with Cross-linked Polyethylene (PEX) and Polyethylene of Raised Temperature (PE-RT) Tubing

2021 ◽  
Author(s):  
Keyword(s):  
Cold Expansion

scholarly journals Effect of hardening induced by cold expansion on damage fatigue accumulation and life assessment of Aluminum alloy 6082 T6

2012 ◽  
Vol 15 (6) ◽  
pp. 981-985 ◽  
Author(s):  
Bendouba Mostefa ◽  
Aid Abdelkrim ◽  
Benhamena Ali ◽  
Benguediab Mohamed
Keyword(s):  
Aluminum Alloy ◽  
Life Assessment ◽  
Cold Expansion

scholarly journals Effect of cold expansion on improving of fatigue initiation life in Aluminium alloy

2018 ◽  
Vol 12 (46) ◽  
pp. 34-44
Author(s):  
Mohamed El Habiri ◽  
Mustapha Benachour ◽  
Nadjia Benachour
Keyword(s):  
Aluminium Alloy ◽  
Cold Expansion ◽  
Fatigue Initiation

Effect of residual stresses induced by cold expansion on the crack growth in 6082 aluminum alloy

2013 ◽  
Vol 99 ◽  
pp. 159-168 ◽  
Author(s):  
Z. Semari ◽  
A. Aid ◽  
A. Benhamena ◽  
A. Amrouche ◽  
M. Benguediab ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Residual Stresses ◽  
Crack Growth ◽  
Cold Expansion ◽  
6082 Aluminum Alloy

Through-Thickness Residual Stress Distribution After the Cold Expansion of Fastener Holes and Its Effect on Fracturing

2004 ◽  
Vol 126 (1) ◽  
pp. 129-135 ◽  
Author(s):  
A. Tamer O¨zdemir ◽  
Lyndon Edwards
Keyword(s):  
Thickness Effect ◽  
Fourier Series Expansion ◽  
Hole Drilling ◽  
Three Dimension ◽  
Stress Distributions ◽  
Element Analysis ◽  
Cold Expansion ◽  
Residual Strains ◽  
Hoop Stresses ◽  
Stress Patterns

Many analytical and experimental techniques utilize two-dimensional analysis approach to determine residual strains and stresses at cold expanded holes. In the present work, a recently developed technique of hole drilling was used to sketch stress patterns in three-dimension at a particular orientation of split-sleeve cold expanded holes. At this orientation, similarities were obtained in between the present results and the stress distributions measured by Fourier series expansion, neutron diffraction methods and prediction of a recent finite element analysis. It is clear that after cold expansion there are significant variations in residual hoop stresses at different sections through the thickness of the plate. However, finish reaming and de-burring around the hole redistributes residual stresses such that hoop stresses adjacent to the hole along its entire length becomes more compressive and almost uniform. Finally a correlation between stress pattern and crack profile, displaying the through-thickness effect was shown.

A novel cold expansion process for improving the surface integrity and fatigue life of small-deep holes in Inconel 718 superalloys

2022 ◽  
Vol 154 ◽  
pp. 106544
Author(s):  
Shu-Lei Yao ◽  
Xue-Lin Lei ◽  
Run-Zi Wang ◽  
Cen-Yao He ◽  
Xian-Cheng Zhang ◽  
...  
Keyword(s):  
Fatigue Life ◽  
Surface Integrity ◽  
Inconel 718 ◽  
Expansion Process ◽  
Cold Expansion

Numerical investigation of the effect of hole reaming on fatigue life by cold expansion

2022 ◽  
Author(s):  
Kuanyu Liu ◽  
Xinsheng Yang ◽  
Li Zhou ◽  
Ming Li ◽  
Weijin Zhu
Keyword(s):  
Fatigue Life ◽  
Fatigue Tests ◽  
Stress Fields ◽  
Analysis Software ◽  
Fe Method ◽  
Alloy Plate ◽  
Cold Expansion ◽  
Hole Edge ◽  
Aluminum Alloy Plate ◽  
The Relationship

The reaming process of the 6061 aluminum alloy plate after cold expansion with split sleeve was simulated by finite element (FE) method based on Abaqus/CAE, the relationship between the reaming depths and the distribution of residual stress fields is obtained by analysis. The fatigue lives of the plate under different reaming depths were calculated by using the fatigue analysis software FE-SAFE, and verified by fatigue tests. The results show that reaming after expansion will increase the residual compressive stress at the hole edge on the entrance surface. In addition, the fatigue life of the specimens increases with the increase of the reaming depth, and the best fatigue gain of the specimen is obtained when the reaming depth of 0.5 mm.

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