× Close

📚 Project Proposal Topics PDF Department List & Materials for Google Scholars
Banking and Finance Topics
Building Technology Topics
Business Education Topics
Community Health Topics
Computer Science Topics
📚 List of Project Proposal Topics and PDF Materials for (2025) Students

Search for Project and Seminar Topics Post Market Item or Services for Free
Fracture Mechanics Approach for the Maintenance of Offshore Oil and Gas Pipeline

Fracture Mechanics Approach for the Maintenance of Offshore Oil and Gas Pipeline

Project / Seminar Material
Reference ID: PS-1528-TM

DEDICATION

This research material titled “Fracture Mechanics Approach for the Maintenance of Offshore Oil and Gas Pipeline” is dedicated to God for his enabling grace, and to all computer enthusiasts who contributed to make life a pleasant experience during my research documentation.

ACKNOWLEDGEMENT

I extend my sincere gratitude to all those who contributed to the completion of this project. Special thanks to my Supervisor (Name of your Supervisor), the Head of Department (Name of your HOD), the Lecturers in the department of Science and Engineering, Book Authors and Profound Scholars of existing or related project material on “Fracture Mechanics Approach for the Maintenance of Offshore Oil and Gas Pipeline” for their invaluable guidance, support, and expertise throughout the journey.

I am also grateful to your study area (mention any funding organizations, if applicable) for their financial assistance. This research would not have been possible without the encouragement and assistance of some stakeholders (mention any mentors, teachers, or colleagues). Additionally, I would like to acknowledge the understanding and patience of my family and friends during this endeavor. Your unwavering support has been a constant source of motivation. Thank you all for being part of this meaningful endeavor.

ABSTRACT

Failure of offshore oil and gas pipelines occurs under certain conditions due to some applied mechanical forces. These conditions constitute a potential threat to the integrity of in-service life span of the pipelines which can lead to loss of resources and environmental pollution. Several studies have shown that pipelines fail as a result of Welding, Fatigue Crack Growth, Corrosion Fatigue, Stress Corrosion Cracking, and Erosion due to fluid flow.

This paper presents a model by using fracture mechanics to analyze the allowable applied stresses an in service pipeline needs to withstand in minimizing crack growth. Furthermore, the crack size, crack shape and hole radius with pipe thickness will be modeled. The modeling results will be validated using experimental data. The implications of the results will be discussed for the design or development of a robust oil and gas pipelines.


Fracture Mechanics Approach for the Maintenance of Offshore Oil and Gas Pipeline

CHAPTER ONE

1.0 Introduction

1.1 Background of the Study

Oil and Gas Pipelines are used as a medium through which petroleum products are transported from the wells to the tanks. When it is under operation, it fails rarely; meanwhile, it causes extremely serious problems like loss of resources and lives if failure does occur. Over half of all in-service pipelines fail as a result of some externally applied mechanical forces which must be properly analyzed to prevent re occurrence. Fractographic examination is to determine the causes of failures by studying the characteristics of a fracture surface.

Griffith proposed that cracks that already exist will propagate when the released elastic Strain Energy is at least equal to the energy that is required to create the new crack surface. Life prediction for Fatigue Crack by Paris has showed that range of Stress Intensity Factor, k, might characterize Sub-Critical Crack Growth under fatigue loading. He examined that Crack Growth Rate of Stress Intensity Factor gave straight line.

Also, Rice’s J-integral is a commonly used Elastic Plastic Fracture parameter for the description of the local field in the neighborhood of the Stress Concentration and for the study of crack initiation and propagation. His theory is also interpreted as the potential difference in energy between two specimens that are loaded identically having slightly different crack length. Meanwhile, Irwin proposed the Stress Intensity Factor as crack primary driving force.

Neumann and Raju estimated the Stress Intensity Factor for hollow Cylinder for specific Crack Aspect Ratios, Crack Depth to Thickness and Hole Radius to Thickness. Alexander Aynbinder evaluated the thickness of High Temperature (HT) and High Pressure (HP) pipe walls and combined the inelastic behavior of pipe steels by using iterative computational modeling algorithm. Idriss Malik used Lame’s solution to estimate stresses and Neumann and Raju solutions to calculate Stress Intensity Factor for the combined modeling of the wall thinning and crack propagation in pipelines.

Oil and Gas Pipeline reliability is affected by welding defects, corrosion and stresses that cause cracking. Therefore, the applied stresses, Stress Intensity Factor, Composition, and Temperature etc are highly considered for the prediction of the integrity of offshore pipelines. Additionally, Stresses that are resulted to Sub-Critical Crack Growth is a major challenge to the pipe, while the loss of materials can result from the interaction between erosive fluids flow and corroding pipeline.

CHAPTER TWO

2.0 Literature Review

2.1 Introduction

This chapter focuses on the review of related literature. A literature review includes the current knowledge as well as theoretical and methodological contributions to a particular topic. It documents the state of the art with respect to the topic you are writing. It surveys the literature in the topic selected. In this research work the literature review includes the …

Summary Headlines for Fracture Mechanics Approach for the Maintenance of Offshore Oil and Gas Pipeline



    NEED HELP? CALL US 24/7:
    +234 803 051 1988