Application of Diffraction Methods for the Residual Stress Determination in Welded Joints

The paper gives an overview about the most important diffraction methods for the determination of residual stresses in welded joints. The basic principles and the particular advantages and limitations of the methods are shown as well as the applicability for lab size samples and welded components.

Determination of Welding Residual Stresses with Help of the Micromagnetic Measurement Method

Materials Science Forum ◽

10.4028/www.scientific.net/msf.524-525.647 ◽

2006 ◽

Vol 524-525 ◽

pp. 647-652 ◽

Cited By ~ 1

Author(s):

Markus Bruns ◽

Thomas Nitschke-Pagel

Keyword(s):

Residual Stress ◽

Residual Stresses ◽

Welded Joints ◽

Measurement Method ◽

Linear Regression Analysis ◽

Calibration Procedure ◽

Stress Determination ◽

Magnetization Direction ◽

The micromagnetic measurement method is a well known technique for a qualitative estimation of residual stresses in ferromagnetic materials. The application due to the advantages of a fast and manageable use is hindered by the high complexity of the calibration procedure for the quantitative residual stress determination when additionally a changing microstructure influences the measured signals. Therefore basic investigations were performed for the residual stress determination of welded joints by the micromagnetic method. A multi-parameter approach by using different micromagnetic techniques was evaluated by a linear regression analysis. For each structural steel a regression polynomial can be calculated for the residual stress determination of differently welded specimens. The accuracy of the prediction depends on the magnetization direction. The experimental results show, that this strategy enables a useful possibility of an easier method for the determination of residual stresses in welded joints.

Fast residual stress determination of welded joints using reversible holographic interferometric (RHI) film

10.1117/12.245181 ◽

1996 ◽

Author(s):

George E. Dovgalenko ◽

Anatoli Kniazkov ◽

Yuri I. Onischenko ◽

Gregory J. Salamo

Keyword(s):

Residual Stress ◽

Welded Joints ◽

Stress Determination ◽

Principal Stress Ratio Effect at Residual Stress Determination Utilizing the Variation of Indentation Hardness

Lubricants ◽

10.3390/lubricants7060050 ◽

2019 ◽

Vol 7 (6) ◽

pp. 50

Author(s):

Per-Lennart Larsson

Keyword(s):

Residual Stress ◽

Residual Stresses ◽

Stress Ratio ◽

Experimental Situation ◽

Indentation Hardness ◽

Stress Determination ◽

Perfectly Plastic ◽

Plastic Materials ◽

Elastic Perfectly Plastic

The determination of residual stresses is an important issue when it comes to material failure analysis. The variation of global indentation properties, due to the presence of residual stresses, can serve as a guideline for the size and direction of such stresses. One of these global indentation properties, the material hardness, is unfortunately invariant of residual stresses when metals and alloys are at issue. In this situation, one has to rely on the size of the indentation contact area for residual stress determination. For other materials such as ceramics and polymers, where elastic deformations are of greater importance at indentation, such invariance is no longer present. Here, this variation is investigated based on finite element simulations. The aim is then to determine how the indentation hardness is influenced by the principal residual stress ratio and also discuss if such an influence is sufficient in order to determine the size and direction of such stresses in an experimental situation. It should be emphasized that this work does not suggest a new approach to residual stress determination (by indentation testing) but investigates the applicability of previously derived methods to a situation where the surface stress field is not simplified as equi-biaxial or uniaxial. For simplicity, but not out of necessity, only cone indentation of elastic-perfectly plastic materials is considered.

Residual stress determination in friction stir butt welded joints using a digital image correlation-aided slitting technique

Chinese Journal of Aeronautics ◽

10.1016/j.cja.2016.11.003 ◽

2017 ◽

Vol 30 (3) ◽

pp. 1258-1269 ◽

Cited By ~ 8

Author(s):

Yaowu XU ◽

Rui BAO

Keyword(s):

Residual Stress ◽

Digital Image Correlation ◽

Digital Image ◽

Welded Joints ◽

Image Correlation ◽

Stress Determination ◽

Friction Stir

Residual stress determination of rail tread using a laser ultrasonic technique

Laser Physics ◽

10.1088/1054-660x/25/5/056104 ◽

2015 ◽

Vol 25 (5) ◽

pp. 056104 ◽

Cited By ~ 1

Author(s):

Jing Wang ◽

Qibo Feng

Keyword(s):

Residual Stress ◽

Ultrasonic Technique ◽

Stress Determination ◽

Laser Ultrasonic ◽

Comparison of Different Methods of Residual Stress Determination of Cold-Rolled Austenitic-Ferritic, Austenitic and Ferritic Steels

Residual Stresses 2018 ◽

10.21741/9781945291890-23 ◽

2018 ◽

Keyword(s):

Residual Stress ◽

Ferritic Steels ◽

Stress Determination ◽

Cold Rolled

Verification of the Geometric Parameters of the Ring-Core Method

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.827.109 ◽

2016 ◽

Vol 827 ◽

pp. 109-112

Author(s):

Patrik Šarga ◽

František Menda ◽

František Trebuňa

Keyword(s):

Residual Stress ◽

Residual Stresses ◽

Complex Analysis ◽

Geometric Parameters ◽

Stress Determination ◽

Material Thickness ◽

Core Method ◽

Stress Components ◽

Ring Core

The Ring-Core method is a semi-destructive method for residual stress determination inside materials. The evaluation of residual stresses using Ring-Core method requires complex analysis of the geometric parameters. This work deals with the uniformly distributed residual stress components through the material thickness.