Advanced Joining Processes (eBook)

Editorial 6
Contents 7
Mechanical Joining 9
Investigation on Clinching with Additional Local Material Bond by Thermal Joining 10
1 Introduction 10
2 Procedure 11
3 Investigation on Combination Clinch + Resistance Spot Welding 13
4 Investigation on Combination Clinch + Laser Beam Welding 14
5 Failure Mechanisms 17
6 Conclusion and Further Investigations 18
References 19
Development of Semi-analytical Models for Aircraft Wheel Assembly Design 20
1 Introduction 21
2 Model Description 23
2.1 Plate Element 24
2.2 Hybrid Beam Element 25
2.3 Hybrid Tube Element 27
2.4 Spring Element 28
3 Model Construction 28
3.1 Global Stiffness Matrix 29
3.2 Problem Solving 31
4 Results 32
5 Conclusion and Prospects 34
References 34
Modeling the Effect of Nut Thread Profile Angle on the Vibration-Induced Loosening of Bolted Joint Systems 36
1 Introduction 39
2 Formulation of Frictional Torque and Shear Forces 40
2.1 Underhead Bearing Friction Analysis 40
2.2 Incorporation of Nut Thread Profile Angle into Frictional Analysis of Engaged Thread Surfaces 41
2.3 Transverse Shear Force on Bolt Thread Surface Due to Bending 46
2.4 Rate of Bolt Loosening Due to Cyclic Transverse Load 49
3 Results and Discussion 54
3.1 Effect of Nut Thread Profile Angle 2? on the Loosening Performance 57
3.2 Effect of Thread Fit 59
3.3 Model Prediction of the Effect of Hole Clearance 59
3.4 Effect of Bearing Friction Coefficient on the Loosening Performance of Nuts with Nonstandard Thread Profile Angle (2?= 120°) 59
3.5 Model Validation of the Effect of Bolt Preload 60
4 Conclusion 60
References 60
Welding 62
Laser-Based Additive Manufacturing of Optical, Thermal and Structural Components 63
1 Introduction 64
2 Experimental Approach of wGROTESK 65
3 Results 67
4 Conclusion 71
5 Perspective 71
References 72
Welding Process for the Additive Manufacturing of Cantilevered Components with the WAAM 73
1 Introduction 74
2 Cantilevered Structures 75
2.1 Process Parameters 75
2.2 Manufacturing Examples 76
3 Experimental Investigations 78
3.1 Half-pipe 78
3.2 Walls to Determine the Influence of Spray Cooling 79
4 Conclusion 81
References 83
Single-Sided Resistance Spot Welding of Steel–Aluminum Dissimilar Joints—Mechanical Characterization and Interface Formation 85
1 Introduction and State of the Art 85
2 Experimental Setup 88
3 Results and Discussion 89
3.1 Mechanical Properties 89
3.2 Interface Formation 90
3.3 Pores 92
4 Conclusion 95
References 95
Investigations on the Influence of Beam Shaping in Laser Transmission Welding of Multi-layer Polymer Films with Wavelength-Adapted Diode Laser Beam Sources 97
1 Introduction 97
2 Fundamentals 98
2.1 Laser Transmission Welding of Polymer Films 98
2.2 Beam Shaping 99
2.3 Optical Properties of Polymer Films 100
3 Experimental Setup 100
4 Results and Discussion 101
5 Conclusion 105
References 106
Connected, Digitalized Welding Production—Secure, Ubiquitous Utilization of Data Across Process Layers 107
1 Introduction 107
2 Process Overview 108
3 Weld Seam Process Layer 110
3.1 Applications and Methods 111
3.2 Data Security and Data Privacy 113
4 Assembly Process Layer 114
4.1 Applications and Methods 114
4.2 Data Security and Data Privacy 117
5 Product Process Layer 118
5.1 Applications and Methods 119
5.2 Data Security and Data Privacy 120
6 Conclusion 122
References 123
Adhesive Bonding 125
Structural Bonding of Single-Layer E-Coated Steel Structures in the Agricultural Sector 126
1 Introduction 127
2 Experiment 129
3 Results and Discussion 130
4 Summary and Conclusion 134
References 135
Comparative Analysis of the Effect of Modifying Overlay Material with Selected Nanoparticles on Its Adhesion to the Substrate in Concrete Floors 136
1 Introduction 137
2 Materials, Scope of Research and Methodology 139
2.1 Materials 139
2.2 The Scope of the Research and Methodology 141
3 Comparative Analysis of Research Results 143
3.1 Results of Fresh Mortar Mix Properties 143
3.2 Results of the Basic Physical and Mechanical Properties of Hardened Mortars 144
3.3 Results of Pull-off Adhesion fb Between the Overlay and the Concrete Substrate 145
3.4 Results of the Course of the Longitudinal Ultrasonic Wave Velocity cL as a Function of Thickness H of the Overlay Mortar 148
3.5 Results of the Functional Parameters of the Overlay 149
4 Mechanical Performance Analysis of Overlay Mortars Modified with Selected Nanoparticles 151
5 Summary of Research Results and Conclusions 153
References 153
Mechanical Characterisation of Graded Single Lap Joints Using Magnetised Cork Microparticles 157
1 Introduction 158
2 Experimental Details 161
2.1 Materials 161
2.2 Manufacture of Bulk Specimens 161
2.3 Manufacture of Single Lap Joints and Graded Single Lap Joints 162
2.4 Particle Size Analysis 165
2.5 Density Measurement 165
2.6 Tensile Tests 166
2.7 Single Lap Joint Tests 166
2.8 Scanning Electron Microscopy 167
2.9 Glass Transition Temperature (Tg) Measurement 167
3 Results and Discussion 168
3.1 Particle Characterisation 168
3.2 Tensile Test Results and Fracture Surface Analysis 171
3.3 Glass Transition Temperature Measurements (Tg) 174
3.4 Single Lap Joint Tests 174
4 Conclusions 175
References 176