Lecture

Mod-01 Lec-19 Shot Blasting

This module provides insights into shot blasting, a key surface preparation technique used in shipbuilding to enhance steel surface quality.

Key aspects include:

  • The process of shot blasting and its applications in marine construction
  • Benefits of shot blasting for material integrity and adhesion
  • Equipment used in shot blasting and operational safety
  • Comparative analysis with other surface preparation methods

Understanding shot blasting is essential for achieving optimal results in welding and overall structural performance.


Course Lectures
  • This module provides a comprehensive introduction to ships and offshore structures, focusing on their design, engineering, and operational characteristics. Students will learn about:

    • The basic types of ships and their functions
    • Key components of offshore structures
    • The importance of stability and buoyancy in maritime design
    • Historical context and advancements in shipbuilding technology

    By the end of this module, learners will have a foundational understanding of the marine construction industry and its significance in global trade and transportation.

  • This module delves into the characteristics of the shipbuilding industry, examining its unique features and the challenges it faces. Topics covered include:

    1. The economic impact of shipbuilding globally
    2. Comparison of shipbuilding in different regions
    3. Trends in ship design and construction
    4. Environmental considerations and sustainability efforts

    Students will gain insights into the current state of the industry and the future directions it may take, preparing them for careers in this dynamic field.

  • In this module, students will learn about the structural requirements crucial for shipbuilding. Key focus areas include:

    • Understanding longitudinal, transverse, torsional, and local strength
    • The significance of structural integrity in vessel design
    • Calculating loads and stresses on ship structures
    • Design considerations for different types of vessels

    This understanding is vital for ensuring safety and performance in marine operations.

  • This module highlights the basic structural components of ships and offshore structures. It covers:

    1. Types of stiffeners and their functions
    2. Girders and transverses
    3. Hatch side girders and hatch end beams
    4. Brackets and their roles in structural integrity

    Students will gain practical knowledge about how these components work together to ensure the strength and durability of marine vessels.

  • This module explores structural subassemblies in ship construction, focusing on their roles and types, including:

    • Flat stiffened panels and their application
    • Curved stiffened panels and their advantages
    • Floors in longitudinally and transversely framed structures
    • Design considerations for bulkheads and panels

    By understanding these subassemblies, students will appreciate their contribution to the overall structural integrity of marine vessels.

  • Mod-01 Lec-06 Bulkheads
    Prof. N.R. Mandal

    This module examines the various types of bulkheads and their importance in ship design. Topics include:

    1. Transverse watertight bulkheads and their function
    2. Non-watertight bulkheads and their applications
    3. Flat and corrugated bulkhead designs
    4. Impact of bulkheads on stability and safety

    Students will gain insights into the design and engineering principles that govern bulkhead construction, essential for maritime safety.

  • Mod-01 Lec-07 Decks Shells
    Prof. N.R. Mandal

    This module covers decks and shells, examining their structural significance in marine vessels. Key topics include:

    • Construction and design of decks
    • Bottom shell and side shell components
    • Inner bottom plating and its role
    • The importance of structural continuity

    Students will learn about the integration of these elements and how they contribute to the overall strength and functionality of ships.

  • This module covers the essential aspects of structural assemblies, focusing primarily on double bottom construction in marine vessels. Double bottom construction is critical for ensuring the integrity and strength of ships, providing a space for ballast and enhancing stability. Key areas of study will include:

    • Understanding the layout and design principles of double bottoms
    • Material selection and preparation for construction
    • Welding techniques specific to double bottom assemblies
    • Inspection and maintenance considerations

    The module will utilize case studies to illustrate practical applications and address common challenges in double bottom construction.

  • This module delves into the crucial elements of wing tanks and duct keels in marine structures. Wing tanks are integral for enhancing a vessel's stability and buoyancy, while duct keels contribute to the overall hydrodynamic efficiency. In this module, you will learn about:

    • The design and function of wing tanks
    • Material considerations and construction techniques
    • Welding practices related to tank and keel assembly
    • Regulatory requirements and safety standards

    The module will also cover real-world examples to illustrate effective design and troubleshooting in the construction process.

  • This module focuses on fore and aft end construction in marine vessels, which is essential for ensuring structural integrity and hydrodynamic efficiency. Students will explore:

    • Geometric considerations in end construction
    • Material selection and preparation techniques
    • Welding methods suited for end assemblies
    • Structural analysis to mitigate stress and deformation

    Through practical exercises and theoretical insights, participants will gain a comprehensive understanding of how to effectively construct fore and aft ends of various ship types.

  • This module addresses the design and construction of general cargo carriers, which are fundamental to the maritime transport industry. Key topics include:

    • Structural requirements and design specifications
    • Material choices and their implications for performance
    • Construction techniques specific to cargo carriers
    • Safety considerations and regulatory compliance

    Students will engage in project-based learning to apply these concepts in real-world contexts, enhancing their understanding of cargo vessel operations.

  • Mod-01 Lec-12 Bulk Carrier
    Prof. N.R. Mandal

    This module focuses on bulk carriers, emphasizing their unique structural and operational characteristics. Key areas of study include:

    • Design principles specific to bulk cargo transport
    • Material selection and handling for bulk carriers
    • Construction techniques tailored for bulk carrier efficiency
    • Regulatory and safety considerations for bulk shipping

    Students will analyze case studies and engage in hands-on activities to understand the complexities of bulk carrier construction and operation.

  • This module covers the structural details of various marine vessels, including their components and assembly techniques. Students will explore:

    • Analysis of different structural configurations in marine design
    • The roles of stiffeners, girders, and bulkheads
    • Construction methodologies for assembling structural components
    • Inspection techniques to ensure integrity and performance

    This comprehensive approach emphasizes the importance of design integrity and safety in vessel construction.

  • Mod-01 Lec-14 Container Ship
    Prof. N.R. Mandal

    This module presents the construction and operational characteristics of container ships, which are vital for global trade. Key topics covered include:

    • Design specifications unique to container shipping
    • Material considerations for container structures
    • Welding and construction techniques specific to container ships
    • Challenges in the operation and maintenance of container vessels

    Through practical projects and theoretical studies, participants will develop a thorough understanding of the complexities involved in container ship design and operation.

  • Mod-01 Lec-15 RO-RO Ship
    Prof. N.R. Mandal

    This module focuses on the design and characteristics of RO-RO (Roll-on/Roll-off) ships, which facilitate the loading and unloading of vehicles and cargo.

    Key topics include:

    • Overview of RO-RO ship design and functionality
    • Structural components and arrangements specific to RO-RO vessels
    • Loading and unloading mechanisms
    • Safety considerations and regulations

    Understanding RO-RO ships is crucial for those involved in marine construction and welding as they play a significant role in modern maritime logistics.

  • Mod-01 Lec-16 Oil Tanker
    Prof. N.R. Mandal

    This module delves into the structure and design of oil tankers, which are key vessels in the maritime industry for transporting liquid cargo.

    Topics covered include:

    • Types of oil tankers and their specific designs
    • Structural requirements for safety and efficiency
    • Construction methods and materials used
    • Environmental considerations and regulations

    By understanding oil tanker design and construction, learners will appreciate the complexities involved in ensuring safe and efficient maritime transport of oil.

  • This module emphasizes the importance of structural alignment and continuity in marine construction, which are crucial for the integrity and safety of vessels.

    In this section, learners will explore:

    • Principles of structural alignment and their impact on strength
    • Methods for ensuring continuity in structural components
    • Common issues associated with misalignment and their solutions
    • Best practices for maintaining structural integrity during construction

    A solid understanding of these concepts is vital for effective shipbuilding and maintenance practices.

  • This module covers steel material preparation techniques essential for shipbuilding, ensuring that all materials meet necessary standards before construction.

    Topics include:

    • Overview of steel types and their applications in marine construction
    • Preparation methods such as shot blasting and acid pickling
    • Importance of material cleanliness and surface preparation
    • Impact of material preparation on welding quality

    Understanding these preparation techniques is critical for ensuring the durability and reliability of marine structures.

  • Mod-01 Lec-19 Shot Blasting
    Prof. N.R. Mandal

    This module provides insights into shot blasting, a key surface preparation technique used in shipbuilding to enhance steel surface quality.

    Key aspects include:

    • The process of shot blasting and its applications in marine construction
    • Benefits of shot blasting for material integrity and adhesion
    • Equipment used in shot blasting and operational safety
    • Comparative analysis with other surface preparation methods

    Understanding shot blasting is essential for achieving optimal results in welding and overall structural performance.

  • Mod-01 Lec-20 Acid Pickling
    Prof. N.R. Mandal

    This module addresses acid pickling, a crucial process in steel material preparation that removes oxides and contaminants from metal surfaces.

    Topics discussed include:

    • The acid pickling process and its chemical principles
    • Importance of acid pickling for surface cleanliness and weld quality
    • Safety considerations when using acids in industrial settings
    • Comparative methods for surface preparation and their effectiveness

    Mastering acid pickling techniques is vital for ensuring the long-term durability and adherence of welds in marine structures.

  • Mod-01 Lec-21 Plate Cutting
    Prof. N.R. Mandal

    This module explores plate cutting methods used in marine construction, which are essential for shaping materials to exact specifications.

    Key areas of focus include:

    • Overview of mechanical and thermal cutting methods
    • Specific techniques such as oxy-fuel cutting and plasma cutting
    • Applications of water jet cutting in the shipbuilding industry
    • Factors influencing the choice of cutting method

    Understanding plate cutting processes is crucial for ensuring precision and efficiency in the construction of ships and offshore structures.

  • This module focuses on the techniques for plate and section forming, which are crucial in the construction of marine structures. Students will learn about:

    • Mechanical methods for forming plates and sections.
    • Use of hydraulic presses and their functionality.
    • Different forming techniques including the 3-point hydraulic press.
    • Line heating methods and their applications in adjusting the shape of structural components.

    Understanding these forming techniques is essential for ensuring structural integrity and meeting design specifications in shipbuilding and offshore construction.

  • This module delves deeper into line heating as a method for bending and shaping metal plates and sections. Students will explore:

    • The principles of line heating and its importance in shipbuilding.
    • Techniques for applying heat along a line to achieve desired curves.
    • Safety considerations and industry best practices when using line heating techniques.
    • Real-world applications of line heating in constructing various marine structural components.

    Mastering line heating is vital for fabricating complex shapes required in marine construction.

  • Mod-01 Lec-24 Line Heating
    Prof. N.R. Mandal

    This module introduces fusion welding and the vital role of power sources in the welding process. Key topics include:

    • Different types of power sources used in fusion welding processes.
    • How power source settings affect weld quality and performance.
    • The relationship between power levels and welding techniques.
    • Common fusion welding methods such as MMAW, GMAW, and GTAW.

    A solid understanding of fusion welding and its power sources is necessary for producing high-quality marine structures.

  • This module covers welding parameters and their effects on the overall welding process. Students will learn about:

    • The importance of controlling welding parameters for successful welds.
    • Key parameters such as voltage, current, travel speed, and electrode type.
    • How variations in parameters can lead to different welding defects.
    • Strategies for optimizing welding parameters for specific applications.

    Understanding these factors is crucial for ensuring the quality and reliability of welded marine structures.

  • This module focuses on various fusion welding methods used in marine construction. It includes:

    • Manual Metal Arc Welding (MMAW) and its applications.
    • Gas Metal Arc Welding (GMAW) and its advantages in shipbuilding.
    • Gas Tungsten Arc Welding (GTAW), known for its precision.
    • Submerged Arc Welding (SAW) and its effectiveness in thick materials.
    • Electroslag and Electrogas welding methods.

    Mastering these welding methods is essential for fabricating robust marine structures efficiently.

  • Mod-01 Lec-27 Welding Methods
    Prof. N.R. Mandal

    This module addresses the common challenges of welding distortions and methods for their prevention and mitigation. Key topics include:

    • Understanding the causes of welding distortions and their impact on structural integrity.
    • Techniques for preventing distortions during the welding process.
    • Strategies for mitigating distortions after welding.
    • Identifying and correcting welding defects that arise from distortions.

    Understanding how to manage welding distortions is critical for maintaining the quality of marine structures.

  • This module provides an overview of nondestructive testing (NDT) methods used in the inspection of welded structures. Topics covered include:

    • Different NDT techniques, such as visual inspection, ultrasonic testing, and radiography.
    • The significance of NDT in ensuring the quality and safety of marine structures.
    • How to interpret NDT results and make informed decisions based on findings.
    • Industry standards and best practices for implementing NDT in shipbuilding.

    Familiarity with NDT methods is vital for maintaining the integrity and safety of marine constructions.

  • This module focuses on Gas Metal Arc Welding (GMAW), a widely used welding process in marine construction. It covers essential aspects such as:

    • The principles of GMAW, including its advantages and applications in the shipbuilding industry.
    • The equipment and setup required for effective GMAW.
    • Welding parameters such as voltage, amperage, and wire feed speed.
    • Proper techniques for achieving optimal weld quality, including travel speed and electrode angle.

    Students will engage in practical demonstrations to understand the nuances of GMAW, emphasizing safety protocols and procedural efficiency.

  • In this module, we delve into the second part of Gas Metal Arc Welding (GMAW). Building on the previous session, we will explore:

    • Advanced GMAW techniques for different materials and thicknesses.
    • Detailed analysis of welding defects and how to prevent them.
    • Techniques for adjusting welding parameters to improve joint quality.
    • Real-life case studies demonstrating GMAW applications in the marine industry.

    Students will also participate in hands-on exercises to refine their skills, focusing on practical problem-solving in welding scenarios.

  • This module introduces Gas Tungsten Arc Welding (GTAW), a process known for its precision and versatility. Key topics include:

    • The fundamental principles and characteristics of GTAW.
    • Equipment and materials used, including tungsten electrodes and shielding gases.
    • Welding techniques for achieving high-quality welds in various applications.
    • Common challenges faced during GTAW and solutions to overcome them.

    Students will engage in practical sessions to learn GTAW techniques applicable to marine structures, emphasizing quality and safety.

  • This module covers Submerged Arc Welding (SAW), a process notable for its high deposition rates. The topics include:

    • The process and equipment associated with SAW.
    • Advantages of SAW in marine applications, particularly for thick materials.
    • Welding parameters and their influence on weld quality.
    • Common defects in SAW and methods to ensure sound welds.

    Students will perform hands-on SAW exercises, focusing on real-world applications and troubleshooting strategies.

  • This module focuses on Electroslag Welding (ESW), an effective welding method for thick sections. Key areas of study include:

    • The principles behind Electroslag Welding and its industrial applications.
    • Equipment required for ESW, including flux and electrode management.
    • Advantages of ESW over other welding processes in specific scenarios.
    • Techniques for monitoring and maintaining weld quality throughout the process.

    Students will engage in practical training sessions to apply ESW techniques and understand their significance in marine construction.

  • In this module, students will explore Electrogas Welding (EGW), a process suitable for vertical welding of thick materials. Discussion topics include:

    • The fundamental principles and setup for Electrogas Welding.
    • Benefits of EGW in marine construction, especially for large assemblies.
    • Welding parameters critical to achieving optimal results.
    • Quality control measures to prevent defects in welds.

    Hands-on practice will allow students to hone their EGW skills and apply them to real-world marine projects.

  • This module introduces Friction Stir Welding (FSW), a solid-state welding process used in various marine applications. Key topics include:

    • The principles of Friction Stir Welding and how it differs from traditional welding methods.
    • Applications of FSW in marine construction and its advantages over other techniques.
    • Process parameters that affect weld quality and characteristics.
    • Challenges and solutions associated with FSW.

    Students will participate in hands-on sessions to practice FSW techniques and understand their significance in the industry.

  • Mod-01 Lec-36 FSW Metallurgy
    Prof. N.R. Mandal

    This module focuses on the metallurgy of Friction Stir Welding (FSW), an innovative welding process that utilizes a rotating tool to join materials. Understanding the metallurgical aspects is essential for optimizing the FSW process and ensuring the structural integrity of welded joints. Key topics include:

    • Overview of FSW and its advantages
    • Material properties affected by the FSW process
    • Phase transformations during welding
    • Microstructure evolution in welds
    • Effects of tool design on weld quality

    By the end of this module, students will gain significant insights into how metallurgical principles govern the FSW process and its outcomes.

  • This module delves into welding defects and non-destructive testing (NDT) methods essential for evaluating weld integrity. Understanding these concepts is critical for ensuring high-quality welds in marine construction.

    Key topics include:

    1. Types of welding defects: porosity, cracks, and inclusions
    2. Common causes and prevention strategies for defects
    3. Introduction to Non-Destructive Testing techniques: ultrasonic, radiographic, and dye penetrant testing
    4. Importance of NDT in maintaining safety and quality standards

    Students will learn how to identify, assess, and mitigate welding defects to improve overall welding quality in marine projects.

  • This module provides an in-depth look at welding distortions, a common issue in various welding processes. Understanding distortions is crucial for engineers and welders to predict and control the warping of welded structures.

    Topics covered include:

    • Definition and types of welding distortions
    • Factors contributing to distortion during welding
    • Measuring and analyzing distortions in welded structures
    • Real-world case studies demonstrating the impact of distortion on marine structures

    By the end of this module, students will be equipped with knowledge to anticipate and address distortions effectively.

  • This module covers the mechanisms of distortion and the various types of distortion that can occur during welding operations. It emphasizes the importance of understanding these mechanisms to develop effective mitigation strategies.

    Key learning points include:

    1. Overview of distortion mechanisms: thermal expansion, contraction, and phase changes
    2. Types of distortions: angular distortion, longitudinal distortion, and transverse distortion
    3. Impact of material type and thickness on distortion
    4. Real-life examples of distortion challenges in marine construction

    By exploring these topics, students will gain insights into the underlying causes of distortion and how to address them in practical scenarios.

  • This module focuses on distortion control and mitigation techniques that are vital for maintaining the structural integrity of welded assemblies. Understanding how to manage distortion effectively can significantly enhance welding outcomes.

    Topics include:

    • Principles of distortion control: pre-welding, welding, and post-welding strategies
    • Tools and equipment that aid in distortion control
    • Welding sequences and their impact on distortion
    • Case studies showcasing successful distortion mitigation

    Students will learn practical methods to reduce distortion risks and improve the quality of welded structures.

  • Mod-01 Lec-41 Welding Sequence
    Prof. N.R. Mandal

    This module examines the importance of welding sequences in minimizing distortion and ensuring weld integrity. A well-planned welding sequence can significantly reduce the adverse effects of thermal stresses during the welding process.

    Key points discussed in this module include:

    1. Understanding the concept of welding sequence
    2. How welding sequences affect heat distribution and distortion
    3. Techniques for developing effective welding sequences
    4. Case studies highlighting the importance of proper sequencing in marine applications

    By mastering welding sequences, students will be better positioned to control distortions in their projects, leading to higher quality welds.