Effect of Stress Concentration on Tensile Strength of Titanium and Steel Alloy Sheet at Various Temperatures

2009 ◽  
pp. 122-122-14
Author(s):  
George Sachs ◽  
John G. Sessler
Keyword(s):  
Tensile Strength ◽  
Stress Concentration ◽  
Alloy Sheet ◽  
Steel Alloy

Influence of Stress Concentration on Fatigue Property of Welded Joints of 5083 Aluminum Alloy

2013 ◽  
Vol 456 ◽  
pp. 451-455
Author(s):  
Jun Yang ◽  
Bo Li ◽  
Qiang Jia ◽  
Yuan Xing Li ◽  
Ming Yue Zhang ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Aluminum Alloy ◽  
Fatigue Strength ◽  
Stress Concentration ◽  
Welded Joints ◽  
Weld Zone ◽  
Fatigue Property ◽  
Concentration Coefficient ◽  
5083 Aluminum Alloy ◽  
Stress Concentration Coefficient

Fatigue test of the welded joint of 5083 aluminum alloy with smooth and height of specimen and the weld zone than the high test measurement and theoretical stress concentration coefficient calculation, the weld reinforcement effect of stress concentration on the fatigue performance of welded joints. The results show that: Smooth tensile strength of specimens for 264MPa, fatigue strength is 95MPa, the tensile strength of the 36%. Higher tensile strength of specimens for 320MPa, fatigue strength is 70MPa, the tensile strength of the 22%. Higher specimen stress concentration coefficient is 1.64, the stress concentration to the weld toe becomes fatigue initiation source, and reduces the fatigue strength and the fatigue life of welded joints.

Mechanical Properties of 5083 Aluminium Welds after Manual and Automatic Pulsed Gas Metal Arc Welding Using E5356 Filler

2010 ◽  
Vol 654-656 ◽  
pp. 2560-2563 ◽  
Author(s):  
Kalenda Mutombo ◽  
Madeleine du Toit
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Stress Concentration ◽  
Arc Welding ◽  
Gas Metal Arc Welding ◽  
Fatigue Properties ◽  
Filler Wire ◽  
Metal Arc Welding ◽  
Weld Toe ◽  
Fully Automatic

Semi-automatic and automatic pulsed gas metal arc welding (GMAW) of aluminium alloy 5083 with ER5356 filler wire causes considerable softening in the weld. The tensile strength of dressed automatic welds approaches that of the base metal, but the stress concentration caused by the weld toe in undressed semi-automatic welds reduced the tensile strength significantly. Fully automatic welds displayed improved fatigue properties compared to semi-automatic welds.

Numerical Analysis of Deformation and Damage in Copper Alloy Sheet

2005 ◽  
Vol 475-479 ◽  
pp. 2713-2716
Author(s):  
Qi Ming Dong ◽  
Ping Liu ◽  
Juan Hua Su ◽  
He Jun Li ◽  
Bao Hong Tian
Keyword(s):  
Numerical Analysis ◽  
Stress Concentration ◽  
Large Strain ◽  
Particle Diameter ◽  
Copper Matrix ◽  
Alloy Sheet ◽  
Finish Rolling ◽  
Rolling Deformation ◽  
Strain Model

By using the finite element method and large strain two-dimension plane strain model, the flaking damage of Cu-Fe-P lead frame sheet is investigated. The characterization of microstructure under surface flaking is the larger Fe particles embedded in the copper matrix. The numerical analysis reveals that at the interface of Cu and Fe there are greater strain mutation and intense stress concentration that is increased with particle diameter and the extent of deformation. This strain and stress concentration makes the interface initiate crack and develop crack easily. The micro-crack around the Fe particle is also attributed to surface flaking damage under the finish rolling deformation. The larger Fe particles should be avoided in the production of Cu-Fe-P alloy.

scholarly journals Tensile strength of granular aggregates: Stress chains across particle phase versus stress concentration by pores

2020 ◽  
Vol 102 (2) ◽  
Author(s):  
Xavier Frank ◽  
Farhang Radjaï ◽  
Saied Nezamabadi ◽  
Jean-Yves Delenne
Keyword(s):  
Tensile Strength ◽  
Stress Concentration ◽  
Particle Phase ◽  
Phase Versus

Fracture of Amorphous Polymeric Solids: Time to Break

1965 ◽  
Vol 38 (2) ◽  
pp. 263-277
Author(s):  
J. C. Halpin
Keyword(s):  
Tensile Strength ◽  
Stress Concentration ◽  
Nonlinear Response ◽  
Failure Process ◽  
High Stress ◽  
Viscoelastic Body ◽  
Simple Process ◽  
High Stress Concentration ◽  
Failure Theory ◽  
Fracture Theory

Abstract The failure theory of Bueche and Halpin is generalized and expanded to obtain a prediction of the time dependence of tensile strength and ultimate elongation. The model pictures rupture as propagation of tears or cracks within the material. The growth of a tear or crack is viewed as an ideally simple process in which the molecular chains at the tear tip stretch viscoelastically under the influence of a high stress concentration until they rupture. As a consequence, the failure process is a nonequilibrium one, developing with time and involving the consecutive rupture of the molecular chains. Substantial support for the theory is found by comparing the theoretical prediction with experimental results obtained for SBR and EPT. In addition, it is experimentally demonstrated that delayed and forced rupture experiments can yield qualitatively identical data for viscoelastic bodies. Also discussed is the basis for the approach to the nonlinear response of a viscoelastic body required here in the development of a fracture theory.

Properties of AZ31 and AZ91 Sheets Made by Twin Roll Casting

2007 ◽  
Vol 539-543 ◽  
pp. 1650-1655 ◽  
Author(s):  
Masatada Numano ◽  
Nobuyuki Mori ◽  
Yoshihiro Nakai ◽  
Nozomu Kawabe
Keyword(s):  
Tensile Strength ◽  
Rolling Process ◽  
Alloy Sheet ◽  
Equiaxed Dendrite ◽  
Roll Casting ◽  
Finish Rolling ◽  
Az31 Sheet ◽  
The Press ◽  
Twin Roll ◽  
Press Formability

A feasibility study has been made to produce the Mg alloy sheet of high tensile strength and formability by strip casting and an optimized rolling process. 4mm thickness AZ31 and AZ91 strips were cast successfully. While the microstructure of the cast AZ31 strip consisted of columnar zones, the cast AZ91 strip consisted of fine, equiaxed dendrite and fine precipitations. All samples were rolled to 0.5 mm thickness using an optimized finish-rolling schedule, and their grain size was around 4μm. The ultimate tensile strength (UTS), yield strength (YS) (0.2% offset) and elongation (EL) of the rolled AZ31 sheet were higher than those of commercial AZ31B sheet, and the UTS and YS of the rolled AZ91 sheet were 30% higher than commercial AZ31B sheet. The press formability of the rolled AZ31 and AZ91 sheet was equal or superior to commercial AZ31B sheet.

Sign in / Sign up

Export Citation Format

Share Document