Residual stress effects

Champoux, R. L., Analytical Experimental Methods of Residual Stress Effects in Fatigue, ASTM, STP 1004,1989. 

Model investigation of ceramic-metal FGMs under dynamic thermal loading Residual stress effect, thermal-mechanical coupling effect and materials hardening model effect... 

There are two methods that can be used to treat the residual stress effect one is so-called separate analysis model and the other is an unified analysis model. The two methods can be explained in a simple way as follows ... 

The residual stress effect is considered by the separate analysis model and unified analysis model, and the results are shown in figures 3(a) and (b). Figure 3(a) corresponds to the elastic analysis and it is seen that the separate analysis model and unified analysis model give the same resultant stress Figure 3(b) corresponds to the eltistic-plastic analysis tmd it is seen that the resultant stresses found from the two models are different. This is because in the elastic analysis the two responses in phase I and phase II are both linear and the resultant response can be obtained from a direct superposition of the two separate ones. In the elastic-plastic analysis, however, the two separate responses are both nonlinear and the separate analysis model based on the direct superposition of the two separate responses is no longer suitable. 

There are two methods that can be used to treat the residual stress effect on the working. stress one is so-called separate analysis model and the other is an unified analysis model. In I he separate analysis model, the residual stress and working stress is analyzed separately and I he resulted stress is obtained from a direct superimposition of the two separate ones. It is obvious that this method is correct only when the two responses are linear and the material remains elastic in the two phases. For the unified analysis model, the processing phase and the working phase are treated as an unified loading process and the resulted stress is obtained through an unified analysis for the two phases. 

R. John, K.V. Jata and K. Sadananda, Residual Stress Effects on Near Threshold Fatigue Crack Growth Rates in Aerospace Alloys, In Press, International Journal of Fatigue, 2003. 

Marshall DB, Lawn BR. Residual stress effects in sharp contact cracking. Journal of Materials Science. 1979 14(8) 2001-12. DOI 10.1007/BF00551043. 

Figure 7 also illustrates the orientation effect in the base metal at 76 K. The TS growth rates were 30 to 60% less than the TL growth rates, a shift of about 8% on the axis. A similar orientation dependence occurred at room temperature, as can be seen by comparing the TL data in Fig. 5 with the TS data in Fig. 6. The base-metal orientation dependence was small compared with the strong dependence observed in the HAZ. Thus, the residual stress effect introduced by welding was likely to be the cause of the HAZ behavior.

Marshall, D.B. and Lawn, B.R., 1979, Residual stress effects in sharp contact cracking part 1 indentation fracture mechanics, /. Mater. Sci., Vol. 14,... 

A special case of residual stress effect is the adherence of rough surfaces higher asperities are... 

Si02f Ti02 Modulated transmission ellipsometry Residual stress, Effect of drying and heoting conditions Cerquo (1988)... 

Welded joints, because they can have elevated stress levels (from residual stress effects and stress concentrations), geometrical discontinuities, complex metallurgical structures, and possible galvanic cells (preferential weld corrosion)... 

Overall methodology for predicting the effect of environment on bonded joints including residual stress effects. (Jumbo, 2007]... 

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