Welcome To UTPedia

We would like to introduce you, the new knowledge repository product called UTPedia. The UTP Electronic and Digital Intellectual Asset. It stores digitized version of thesis, dissertation, final year project reports and past year examination questions.

Browse content of UTPedia using Year, Subject, Department and Author and Search for required document using Searching facilities included in UTPedia. UTPedia with full text are accessible for all registered users, whereas only the physical information and metadata can be retrieved by public users. UTPedia collaborating and connecting peoples with university’s intellectual works from anywhere.

Disclaimer - Universiti Teknologi PETRONAS shall not be liable for any loss or damage caused by the usage of any information obtained from this web site.Best viewed using Mozilla Firefox 3 or IE 7 with resolution 1024 x 768.

Finite Element Analysis on Residual Stresses Occur in Heat Affected Zone (HAZ) of the Carbon Steel Welded Pipe

Mohamed Yusoof, Mohamed Zaid (2012) Finite Element Analysis on Residual Stresses Occur in Heat Affected Zone (HAZ) of the Carbon Steel Welded Pipe. UNIVERSITI TEKNOLOGI PETRONAS, UNIVERSITI TEKNOLOGI PETRONAS. (Unpublished)

[img]
Preview
PDF
Download (1343Kb) | Preview

Abstract

This dissertation presents the Finite Element Analysis (FEA) on the residual stresses occur in Heat Affected Zone (HAZ) of Carbon Steel Welded pipe. Residual Stresses are known to influence the mechanical properties such as creep or fatigue life of base metal. The uncontrolled amount of residual stresses can lead to serious problem in the future. The stress gradient near the fusion zone is higher than any other location in the surrounding area. This is attributed as one of the significant reasons for the development of cold cracks at the fusion zone in the high strength steel. In order to avoid such welding cracks, the residual stresses in the weld joint have to be minimized by controlling the heat input. Residual stresses are very difficult to be measured since there is a lot of complex governing equation need to be solved in order to get the result but the result is not the exact solutions. The objective of this analysis is to obtain the amount of residual stresses and its distribution at the Heat Affected Zone (HAZ) due to thermal load in Carbon Steel welded pipe. The method that being used is the Finite Element method using ANSYS Software which is a numerical procedure that can be used to obtain solution of engineering problems involving stress analysis, heat transfer, electromagnetism, and fluid flow. Welding method used is the Shield Metal Arc Welding (SMAW). The maximum stress intensity showed by the contour plot was 881 MPa. The total mechanical strain has the maximum value of 0.004769 m/m. The distortion showed that the maximum value was 0.001604m and this was seen on all degree of freedom. From the normal weld heat input that suggested by Welding Procedure Specification (WPS), the maximum temperature was 1944K. From the thermal and structural analysis, the stresses value was analyzed to see the significant of residual stresses on the HAZ of the welded pipe. As a conclusion, the more heat applied during the welding of the Carbon Steel welded pipe, the value of residual stresses was increased.

Item Type: Final Year Project
Academic Subject : Academic Department - Mechanical Engineering - Materials - Engineering materials - Composites material - Metal matrix composites
Subject: T Technology > TJ Mechanical engineering and machinery
Divisions: Engineering > Mechanical
Depositing User: Sharifah Fahimah Saiyed Yoep
Date Deposited: 01 Apr 2013 11:34
Last Modified: 25 Jan 2017 09:40
URI: http://utpedia.utp.edu.my/id/eprint/6243

Actions (login required)

View Item View Item

Document Downloads

More statistics for this item...