Correlation Between Strength and Measured Residual Stress in Tempered Glass Products

2005 ◽  
Vol 2 (3) ◽  
pp. 12565 ◽  
Author(s):  
AS Redner ◽  
E Mognato ◽  
M Schiavonato
Keyword(s):  
Residual Stress ◽  
Tempered Glass ◽  
Measured Residual Stress

scholarly journals Residual Stresses in Ultrasonically Peened Fillet Welded Joints

2014 ◽  
Vol 996 ◽  
pp. 755-760 ◽  
Author(s):  
Bilal Ahmad ◽  
Michael E. Fitzpatrick
Keyword(s):  
Residual Stress ◽  
Residual Stresses ◽  
Compressive Residual Stress ◽  
Fatigue Cracks ◽  
Steel Plates ◽  
Contour Method ◽  
Mechanical Method ◽  
Accelerated Corrosion ◽  
Accelerated Corrosion Testing ◽  
Measured Residual Stress

Fatigue cracks mostly initiate at areas subjected to high tensile residual stress and stress concentration. Ultrasonic peening is a mechanical method to increase fatigue life by imparting compressive residual stress. In this study residual stresses are characterized in fillet welded ship structural steel plates with longitudinal attachments. As-welded, ultrasonically peened, and specimens peened then subjected to accelerated corrosion testing were measured. Residual stress characterization was performed by the contour method and neutron diffraction.

Comments on the Quantification of Mechanical Adhesion Energy of Thermal Oxide Scale on Metallic Substrate Using Tensile Test

2008 ◽  
Vol 595-598 ◽  
pp. 907-914 ◽  
Author(s):  
Somrerk Chandra-ambhorn ◽  
P. Promdirek ◽  
Gobboon Lothongkum ◽  
Yves Wouters ◽  
Alain Galerie
Keyword(s):  
Residual Stress ◽  
Tensile Test ◽  
Oxide Scale ◽  
Transverse Crack ◽  
Metallic Substrate ◽  
Adhesion Energy ◽  
Stored Energy ◽  
Loading Direction ◽  
Mechanical Adhesion ◽  
Measured Residual Stress

The tensile test, accompanied by the corresponding theoretical model, has been developed to quantify the mechanical adhesion energy of the oxide scale on metallic substrate in our previous works. The method to quantify the adhesion energy took into account the effect of residual stress. The effect of the variation of the measured residual stress on the quantified adhesion energy is assessed in this paper. For the scales failed at strains initiating the spallation of 0.018 and 0.011 followed by the transverse crack, it was found that the quantified adhesion energy of the oxide is not sensitive to the variation of the residual stress measured in the range from 0.5 to 2.0 GPa. This is due to the compensation of the decrease in stored energy due to the stress applied in the loading direction (x direction) and the increase in stored energy due to the stress applied in the direction perpendicular to the loading direction (y direction) when the residual stress increases. For the scale failed by the transverse crack followed by the spallation, the quantified adhesion energy tends to be sensitive to the variation of the measured residual stress. The assumption of energy relaxation during the tensile test is alternatively proposed. It is assumed that the energy stored due to the stress in x and y directions is totally released at the first crack. The energy stored due to the stress in y direction from strain initiating the crack to strain initiating the spallation is used in the quantification of the adhesion energy. The scatter of the adhesion energy values quantified by this method and those measured by the inverted-blister test is reduced comparing to the results reported in the previous work.

scholarly journals Optimization of Residual Stress Measurement Conditions for a 2D Method Using X-ray Diffraction and Its Application for Stainless Steel Treated by Laser Cavitation Peening

Materials ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 2772
Author(s):  
Hitoshi Soyama ◽  
Chieko Kuji ◽  
Tsunemoto Kuriyagawa ◽  
Christopher R. Chighizola ◽  
Michael R. Hill
Keyword(s):  
Residual Stress ◽  
Stainless Steel ◽  
Evaluation Method ◽  
Stress Measurement ◽  
X Ray Diffraction ◽  
Stress Variation ◽  
X Ray ◽  
Slitting Method ◽  
Average Grain Size ◽  
Measured Residual Stress

As the fatigue strength of metallic components may be affected by residual stress variation at small length scales, an evaluation method for studying residual stress at sub-mm scale is needed. The sin2ψ method using X-ray diffraction (XRD) is a common method to measure residual stress. However, this method has a lower limit on length scale. In the present study, a method using at a 2D XRD detector with ω-oscillation is proposed, and the measured residual stress obtained by the 2D method is compared to results obtained from the sin2ψ method and the slitting method. The results show that the 2D method can evaluate residual stress in areas with a diameter of 0.2 mm or less in a stainless steel with average grain size of 7 μm. The 2D method was further applied to assess residual stress in the stainless steel after treatment by laser cavitation peening (LCP). The diameter of the laser spot used for LCP was about 0.5 mm, and the stainless steel was treated with evenly spaced laser spots at 4 pulses/mm2. The 2D method revealed fluctuations of LCP-induced residual stress at sub-mm scale that are consistent with fluctuations in the height of the peened surface.

scholarly journals The Assessment of the Residual Stresses Influence on Generation of the Infringement in Shape-Complex Supporting Members

2019 ◽  
Vol 69 (1) ◽  
pp. 85-96
Author(s):  
Miroslav Pástor ◽  
Peter Čarák ◽  
Imrich Gömöry
Keyword(s):  
Finite Element Method ◽  
Residual Stress ◽  
Finite Element ◽  
Numerical Modeling ◽  
Residual Stresses ◽  
The Other ◽  
Drilling Machine ◽  
The Finite Element Method ◽  
Drilling Method ◽  
Measured Residual Stress

AbstractThe aim of the paper is to assess the effect of residual stresses on the damage of the slide bearer. To quantify the residual stresses, the drilling method using SINT MTS 3000 drilling machine was chosen. The tensometric rosette application areas were determined based on the analysis of the results obtained by numerical modeling using the finite element method. Experimental measurement was performed on one unused slide bearer and on the other one, which during its present operation had completed about 9.106cycles. At the end of the paper, the analysis of the measured residual stress values in chosen locations is presented.

scholarly journals Effect of local residual stress on crack propagation in thermal tempered glass.

1984 ◽  
Vol 33 (375) ◽  
pp. 1540-1544 ◽  
Author(s):  
Manabu TAKATSU ◽  
Shin-ichi ARATANI ◽  
Hiroshi HIBINO ◽  
Michiharu MISHIMA
Keyword(s):  
Residual Stress ◽  
Crack Propagation ◽  
Tempered Glass
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