000 02204ntm a2200253 a 4500
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008 141121t2013 my a f m 000 0 eng d
020 _aTHE0006454(Local)
039 9 _a201905141139
_bamirul
_c201412081723
_dFida
_y201411211023
_zariffin
040 _aUMP
090 _aTJ930 .N49 2012 r Bc.
100 1 _aNg, Yew Keong
245 1 0 _aNumerical analysis on failure pressure of pipelines with multi-corroded region /
_cNg Yew Keong
260 _aKuantan, Pahang :
_bUMP ,
_c2013
300 _axxi, 103 p. :
_bill. (some col.) ;
_c30 cm. +
_e1 CD-ROM
502 _aProject paper (Bachelor of Mechanical Engineering)-- Universiti Malaysia Pahang - 2013
504 _aBibliography : p. 96-97
520 3 _aThe underground gas pipeline is vulnerable which can explode any time. The percentage of the pipeline fails due to the pressure may cause fatal destruction. Hence, the predictions of pipeline burst pressure in the early stage are very important in order to provide assessment for future inspection, repair and replacement activities. This thesis is to study the effect of multiple corrosion defects on failure pressure for API X42 steel and validate the results with available design codes. The project implicates analysis by using MSC Patran 2008 r1 software as a pre-processor and MSC Marc 2008 r1 software as a solver. Half of the pipe was simulated by fully applying symmetrical condition. The pipe is modeled in 3-D with outer diameter 381 mm, wall thickness of 17.5 mm and different defect parameter. In this analysis, SMCS and von Mises stress used to predict the failure pressure. The result shows that the failure pressure increases when the distance between defect increases but decreases when the defect length increases. SMCS always shows a higher value compared to von Mises. The design codes applied only when the distance between defect is small enough that multiple defects acts as a single defect. Meanwhile, value of FEA is the highest among all the design codes.
650 0 _aPiping
650 0 _aPipelines
999 _aVIRTUA40
_c2540
_d2546
999 _aVTLSSORT0080*0200*0400*0900*1000*2450*2600*3000*5020*5040*5200*6500*6501*9992