All Outputs (57)

Shot peening coverage effect on residual stress profile by FE random impact analysis (2016)
Journal Article

Shot peening is one of the most effective surface treatments for improving the fatigue strength of machine elements. In this paper, a new finite element-based model to predict the effect of coverage on the surface state is proposed and critically dis... Read More about Shot peening coverage effect on residual stress profile by FE random impact analysis.

Comparison between residual stress induced by waterjet peening and shot peening (2016)
Presentation / Conference Contribution

Surface modification techniques have received much attention among the researchers around the world. Yet, finding the best way to enhance the surface properties remains one of the challenges in engineering. Most of the fatigue cracks begins from the... Read More about Comparison between residual stress induced by waterjet peening and shot peening.

Ductile to brittle failure transition of HSLA-100 steel at high strain rates and subzero temperatures (2016)
Journal Article

Mechanical properties of HSLA-100 steel at room and subzero temperatures of −40 °C, −80 °C and −196 °C were investigated in this work. Dry ice and liquid nitrogen were used to reach the low temperatures. Also, the material response to different strai... Read More about Ductile to brittle failure transition of HSLA-100 steel at high strain rates and subzero temperatures.

Experimental measurement and analytical determination of shot peening residual stresses considering friction and real unloading behavior (2016)
Journal Article

This paper presents an analytical model to predict the residual stress distribution induced by Shot peening. The analytical approach is based on the work of Shen and Atluri (2006) [18] with some modifications. The modifications are related to the ela... Read More about Experimental measurement and analytical determination of shot peening residual stresses considering friction and real unloading behavior.

A comprehensive experimental and numerical study on redistribution of residual stresses by shot peening (2015)
Journal Article

Shot peening is one of the most effective surface strengthening treatment technologies in which compressive residual stresses are induced beneath the specimen surface. Effects of various factors on the distribution of residual stress profile induced... Read More about A comprehensive experimental and numerical study on redistribution of residual stresses by shot peening.

Spherical indentation, part II: Experimental validation for measuring equibiaxial residual stresses (2015)
Journal Article

It is occasionally important or even inevitable to measure residual stresses without harming engineering components. Spherical indentation can be categorized as a nondestructive method to measure residual stresses, as it causes very little damage to... Read More about Spherical indentation, part II: Experimental validation for measuring equibiaxial residual stresses.

Stress variations effect on the accuracy of slitting method for measuring residual stresses (2015)
Journal Article

To maintain the structural integrity of the engineering components, having an exact knowledge of residual stresses is important. Among all mechanical strain relief techniques to measure residual stresses, slitting is one of the youngest. This techniq... Read More about Stress variations effect on the accuracy of slitting method for measuring residual stresses.

Influence of asymmetrical cuts in measuring residual stresses using contour method (2015)
Journal Article

Experimental methods to determine residual stresses are mainly divided into destructive and non-destructive categories. Contour method is a destructive technique that offers a two dimensional map of normal component of residual stresses. The conventi... Read More about Influence of asymmetrical cuts in measuring residual stresses using contour method.

A novel cutting strategy for measuring two components of residual stresses using slitting method (2014)
Journal Article

An exact knowledge of residual stresses that exist within the engineering components is essential to maintain the structural integrity. All mechanical strain relief (MSR) techniques to measure residual stresses rely on removing a section of material... Read More about A novel cutting strategy for measuring two components of residual stresses using slitting method.

A novel method to determine material properties and residual stresses simultaneously using spherical indentation (2014)
Journal Article

Spherical indentation is one of the non-destructive techniques that has gained great interest among researchers in recent years. Spherical indentation is inexpensive and quick and can provide a fairly accurate estimation of in-plane residual stresses... Read More about A novel method to determine material properties and residual stresses simultaneously using spherical indentation.

Plasticity effect on residual stresses measurement using contour method (2013)
Journal Article

Residual stresses have become an important player in the field of structural integrity for many years. Exact knowledge of residual stress distributions is essential in designing the engineering components as unexpected failures are inevitable whereve... Read More about Plasticity effect on residual stresses measurement using contour method.

A procedure to measure biaxial near yield residual stresses using the deep hole drilling technique (2013)
Journal Article

Deep Hole Drilling (DHD) is a mechanical strain relief technique used to measure residual stresses within engineering components. Such techniques measure strains or displacements when part of the component is machined away and typically assume elasti... Read More about A procedure to measure biaxial near yield residual stresses using the deep hole drilling technique.

Fatigue life of repaired welded tubular joints (2013)
Journal Article

In this study, the effect of repair on fatigue life of tubular joints is investigated. Six cracked specimens precedently subjected to fatigue loading undergone to weld repair. Two of those specimens were shot peened before primary fatigue loading. I... Read More about Fatigue life of repaired welded tubular joints.

An alternative approach to determine material characteristics using spherical indentation and neural networks for bulk metals (2012)
Journal Article

Material characteristics such as Young modulus, yield, and ultimate stresses are often considered as fundamental material parameters. Determination of material characteristics using the instrumented indentation test has gained interest among many res... Read More about An alternative approach to determine material characteristics using spherical indentation and neural networks for bulk metals.

The effect of shot peening on fatigue life of welded tubular joint in offshore structure (2011)
Journal Article

An offshore structure is exposed to environmental loading and cyclic stress variations throughout its life. This would result in the possibility of fatigue cracking in its members. Cracks in these structures usually initiate around welded areas, then... Read More about The effect of shot peening on fatigue life of welded tubular joint in offshore structure.

The effect of plasticity on the ability of the deep hole drilling technique to measure axisymmetric residual stress (2011)
Journal Article

Mechanical strain relief covers a class of techniques for measuring residual stress in engineering components. These techniques work by measuring strains or displacements when part of the component is machined away. The assumption is that such strain... Read More about The effect of plasticity on the ability of the deep hole drilling technique to measure axisymmetric residual stress.

An application of chaboche model to predict uniaxial and multiaxial ratcheting (2011)
Journal Article

Chaboche model can be used to predict the ratcheting phenomenon. The parameter determination of this model to achieve an accurate ratcheting prediction is of great importance. Therefore, the application of an optimization procedure can improve the pr... Read More about An application of chaboche model to predict uniaxial and multiaxial ratcheting.

A neural networks approach to characterize material properties using the spherical indentation test (2011)
Journal Article

Determination of material characteristics using the instrumented indentation test has gained interests among many researchers. The output of a spherical indentation test is usually the load-penetration (P-h) curve. To achieve this goal, the elastic d... Read More about A neural networks approach to characterize material properties using the spherical indentation test.

J-integral and CMOD for external inclined cracks on autofrettaged cylinders (2011)
Journal Article

Autofrettage is a well-known method to increase the load carrying capacity of the pressure vessels. The autofrettage outcomes can be contrary when the imperfections or material discontinuities are on the outer surface. In this study, the influences o... Read More about J-integral and CMOD for external inclined cracks on autofrettaged cylinders.

Effect of gauge volume on the residual stress measurement using deep hole drilling technique (2010)
Presentation / Conference Contribution

Accurate evaluation of residual stress is essential if is to be taken into account in structural integrity assessments. For thick components, many non-destructive residual stress measurement techniques cannot be used since they are unable to measure... Read More about Effect of gauge volume on the residual stress measurement using deep hole drilling technique.