Table of Contents

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Woodhead Publishing Series in Electronic and Optical Materials

Preface

Part I: Developments in established laser welding technologies

Chapter 1: Introduction: fundamentals of laser welding

Abstract:

1.1 Characteristics of laser welding

1.2 Lasers for welding

1.3 Laser welding phenomena

1.4 Laser weld penetration and welding defects

1.5 Evolution of laser welding

Chapter 2: Developments in CO2 laser welding

Abstract:

2.1 Introduction

2.2 Laser principles and types of lasers

2.3 Characteristics of CO2 laser beams

2.4 Laser-materials interactions

2.5 Welding phenomena and formation of defects

2.6 Industrial applications of CO2 laser welding

2.7 Future trends

2.8 Acknowledgements

Chapter 3: Developments in Nd:YAG laser welding

Abstract

3.1 Introduction

3.2 Basics of laser welding in keyhole (KH) mode with solid-state lasers

3.3 Examples of weld speed variation on global behaviour of keyhole (KH) and melt pool

3.4 Conclusion and future trends

3.6 Appendix: list of symbols

Chapter 4: Developments in disk laser welding

Abstract

4.1 Introduction: key principles of disk lasers

4.2 Technological trends and developments

4.3 Applications

4.4 Future trends

Chapter 5: Developments in pulsed and continuous wave laser welding technologies

Abstract:

5.1 Introduction

5.2 Fundamentals of laser welding

5.3 New developments in laser welding

5.4 Future trends

Chapter 6: Conduction laser welding

Abstract:

6.1 Introduction: comparison between keyhole and conduction laser welding

6.2 The transition between conduction and keyhole mode

6.3 Conduction laser welding

6.4 Applications of conduction laser welding

Chapter 7: Developments in laser microwelding technology

Abstract

7.1 Introduction

7.2 Laser choices for microwelding

7.3 Laser microwelding process

7.4 Defects and evaluation of microweld joints

7.5 Applications of laser microwelding

7.6 Conclusion and future trends

Part II: Laser welding technologies for various materials

Chapter 8: Laser welding of light metal alloys: aluminium and titanium alloys

Abstract:

8.1 Introduction to laser welding of aluminium alloys

8.2 Laser welding technologies for aluminium alloys

8.3 Microstructure, defects, mechanical properties and corrosion behaviour of aluminium welds

8.4 Introduction to laser welding of titanium alloys

8.5 Laser welding technologies for titanium alloys

8.6 Microstructure, defects, mechanical properties and corrosion behaviour of titanium welds

Chapter 9: Laser welding and brazing of dissimilar materials

Abstract:

9.1 Introduction

9.2 Special issues in joining of dissimilar materials

9.3 Laser joining processes and their applications

9.4 Formation and properties of dissimilar joints

9.5 Future trends

Chapter 10: Laser welding of plastics

Abstract

10.1 Introduction

10.2 History

10.3 Theory of welding plastics

10.4 Effect of main welding parameters

10.5 Modelling of plastics welding

10.6 Introduction to plastics welding processes

10.7 Polymer combinations that can be welded

10.8 Laser welding of plastics: process description

10.9 Welding parameters

10.10 Advantages and disadvantages of transmission laser welding

10.11 Applications

Chapter 11: Laser welding of glass

Abstract:

11.1 Introduction

11.2 Features of glass welding

11.3 Glass welding by continuous wave (CW) lasers

11.4 Glass welding by ultrashort pulse lasers (USPL)

11.5 Conclusion and future trends

Chapter 12: Defect formation mechanisms and preventive procedures in laser welding

Abstract:

12.1 Introduction

12.2 Terminology, characteristics, causes and preventive procedures of laser welding imperfections and defects

12.3 Formation mechanisms and preventive procedures of porosity

12.4 Formation mechanisms and preventive procedures of hot cracking: solidification cracking and liquation cracking

Chapter 13: Residual stress and distortion in laser welding

Abstract:

13.1 Introduction

13.2 Causes of residual stress and distortion

13.3 Mechanism of formation of longitudinal and transverse shrinkage of welded joints

13.4 Influential factors on welding distortion and residual stress

13.5 Distortion and residual stress produced by laser welding

Part III: Developments in emerging laser welding technologies

Chapter 14: Applications of robotics in laser welding

Abstract:

14.1 Introduction: key issues in robotic laser welding

14.2 Connection topology

14.3 Coordinate frames and transformations

14.4 Tool calibration

14.5 Seam teaching and tracking

14.6 Trajectory-based control

14.7 Conclusion

Chapter 15: Developments in beam scanning (remote) technologies and smart beam processing

Abstract:

15.1 Introduction

15.2 Beam movement over the workpiece

15.3 Beam shaping

15.4 Future trends

Chapter 16: Developments in twin-beam laser welding technology

Abstract:

16.1 Introduction

16.2 Numerical study on molten metal flow behavior during twin-beam irradiation

16.3 Apparatus and procedure of twin-beam laser technique

16.4 Application of twin-laser beam

16.5 Conclusion

Chapter 17: Developments in multi-pass laser welding technology with filler wire

Abstract:

17.1 Introduction

17.2 Principle of multi-pass welding with filler wire

17.3 Developments in technology

17.4 Future trends: further improvement of welding efficiency

Chapter 18: Developments in hybridisation and combined laser beam welding technologies

Abstract:

18.1 Introduction

18.2 Laser and arc hybrid welding

18.3 Combining laser welding and laser cutting

Chapter 19: Developments in hybrid laser-arc welding technology

Abstract

19.1 Introduction

19.2 Developments in technology

19.3 Examples of applications

19.4 Quality issues

19.5 Future trends

19.6 Sources of further information and advice

Chapter 20: Developments in modelling and simulation of laser and hybrid laser welding

Abstract:

20.1 Introduction: the role of modelling in laser welding

20.2 Key issues in modelling laser welding processes

20.3 Applications for improving the laser welding technique and the quality of laser welded components

20.4 Future trends

Part IV: Applications of laser welding

Chapter 21: Applications of laser welding in the automotive industry

Abstract:

21.1 Introduction

21.2 Production targets and challenges

21.3 Laser applications in the body shop

21.4 Quality issues

21.5 Future trends

Chapter 22: Applications of laser welding in the railway industry

Abstract:

22.1 Introduction: the role of laser welding in railway engineering

22.2 Laser welding technology for stainless steel railway vehicles

22.3 Heat source model of lap laser welding of stainless steel vehicles

22.4 Quality control of laser welding joints in stainless steel vehicles

22.5 Future trends

22.6 Sources of further information and advice

Chapter 23: Applications of laser welding in the shipbuilding industry

Abstract:

23.1 Introduction

23.2 The approval of laser-based welding in shipbuilding

23.3 Industrial examples

23.4 Future trends

23.5 Conclusion

Index

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