Cracking steels

Although the emphasis in recent years has been on the role of low sulphur contents in promoting hydrogen cracking, it is also possible for a sulphur content which is relatively high to give liquation cracks in the HAZ and for these minute cracks or hot tears to act as potent nuclei for the nucleation of hydrogen cracks. Steels... [Pg.37]

Furthermore, there are larger differences between the normal repair cost of an aerospace structure and that of the steel bridge counterpart. However, research has been conducted to investigate the bonding of CFRP patches to reinforce cracked steel sections relevant to highway bridges. [Pg.639]

Aggelopoulos, E. S., Righiniotis.T. D. andChryssanthopoulos, M. K. (2011), Debonding of adhesively bonded composite patch repairs of cracked steel members . Composites Part B Engineering, Vol. 42, Issue 5, July 2011, pp. 1262-1270. [Pg.655]

Colombi, R, Bassetti, A. and Nussbaumer, A. (2003), Analysis of cracked steel members reinforced by pre-stress composite patch . Fatigue and Fracture of Engineering Materials and Structures, Vol. 26, pp. 59-66. [Pg.656]

Righiniotis, T. D., Aggelopoulos, E. S. and Chryssanthopoulos, M. K. (2004), Fracture mechanics 2D-FEA of cracked steel plate with a CFRP patch . Advanced Polymer Composites for Structural Applications in Construction (ACIC 2004), eds L. C. Hollaway, M. K. Chryssanthopoulos and S. S. J. Moy. Woodhead Publishing,... [Pg.659]

Anti-crack steel is necessary to be placed as splay bars in the haunch area of the vessel to control major cracks predicted at ultimate load. Preferential cracking at this position is possible due to stress concentration and will already be existing in order to bring about premature failure before the development of a... [Pg.499]

Chemical species that induce SCC in carbon and low-alloy carbon steels, even at low concentrations include hydroxides, gaseous hydrogen, gaseous chlorine, hydrogen chloride, hydrogen bromide, aqueous nitrate solutions, hydrogen sulfide gas, MnS and MnSe inclusions in the alloy. As, Sb, and Bi ions in aqueous solution, carbon monoxide-carbon dioxide-water gas mixtures. Many of these chemical systems will crack steel at room temperatures. [Pg.78]

Finite element analysis (FEA) of fiber-reinforced polymer (FRP) rehabilitation of cracked steel and application to pipe repair... [Pg.135]

Finite element analysis of cracked steel plate... [Pg.138]

Figure 8.14 Finite element model of cracked steel plate with CFRP patching.

In the hnite element analysis, a model with uniform initial crack length (fli = 25.4 mm) was used as a starting analysis. LRP patching was applied at one side of the cracked steel plate. As was discussed in the previous section, since the SIL varies across the crack front in the case of single-sided repairs, different crack growth rates of the patched side and unpatched side should be considered. In this study, local increments across the crack front are considered, as shown in Ligure 8.15. The Paris law can be used at any point along the crack front as follows ... [Pg.157]

Evaluation of geometrical correction factor for cracked steel plate with single-side FRP patching... [Pg.158]

Cracked steel pipe with welded cover plate... [Pg.163]

In the previous finite element parametric study of cracked steel plate with CFRP patching, the material properties of the 1.2-mm-thick CFRP plate (Sika, 2003) were assigned for the CFRP patching. In order to compare results of the plate model and the tube model, the same material properties of the CFRP plate were assigned for... [Pg.164]

Figure 8.22 Illustration of the finite element model of circumferential through-wall cracked steel pipe.

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