Proceedings of the 7th International Conference on Fracture Fatigue and Wear - FFW 2018, 9-10 July 2018, Ghent University, Belgium

Preface

Organisation

Organising Committee

Chairman

Co-chairman

International Scientific Committee

Contents

Fracture

Failure Analysis of a Removable Support of a Cockpit Seat in a STOL Airplane

Abstract

1 Introduction

2 Results and Discussion

2.1 Macro Examination

2.2 SEM

2.3 Microstructure

2.4 Micro Hardness Test

2.5 Estimated Maximum Forces

3 Conclusions

4 Recommendations

Acknowledgments

References

Spot Welding Joint’s Fracture Behavior and Fundamental

Abstract

1 Introduction

2 Fracture Mechanics of Spot Welds

3 Modeling and Simulation

3.1 Specimen Modeling

3.2 Material Properties

3.3 Finite Element Analysis Code

3.4 Mesh Generation and Boundary Conditions

4 Results and Discussion

4.1 Maximum Stresses and Crack Propagation

5 Conclusions

Acknowledgments

References

Failure and Fracture Analysis of Al-alloy Wheel Rim of a Vehicle

Abstract

1 Introduction and Background Information

2 Experimental Procedure

3 Results and Discussion

3.1 Visual Examination and Stereomicroscopy

3.2 SEM Fractographic Evaluation

3.3 Optical Metallography

3.4 SEM/EDS Analysis

3.5 Charpy Impact Testing

4 Conclusions

References

Key Parameters for Fracture Toughness of Particle/Polymer Nanocomposites; Sensitivity Analysis via XFEM Modeling Approach

1 Introduction

2 Numerical Modeling for Fracture of Particle/PNCs

3 Sensitivity Analysis Methods

3.1 Regression Method

3.2 Elementary Effects

3.3 Sobol' Method

3.4 Extended Fourier Amplitude Sensitivity Test

4 Results

5 Conclusion

References

A Criterion for Crack Initiation at Blunt Notches Based on the Concept of Local Strength

Abstract

1 Introduction

2 Problem Statement

3 Fracture Criterion

4 Examples of Fracture Criterion Application

4.1 Plate with an Elliptic Hole Under Tension

4.2 Infinite Body with Ellipsoidal Hollow Under Tension

5 Comparison Between Predicted and Experimental Data

5.1 Plate with a Circular Hole Under Tension

5.2 Plate with Lateral Notches Under Tension

5.3 Bar with a Circumferential Notch Under Tension

5.4 Plate with a Circular Hole Under Compression

6 Conclusions

Acknowledgments

References

Effect of Friction Coefficient and Maximum Contact Pressure on the Spalling Depth of Gear Teeth Flank

Abstract

1 Introduction

2 Numerical Simulation

3 Results and Discussion

4 Conclusion

References

Transient Analysis of Multiple Interface Cracks in Two Bonded Elastic and Piezoelectric Layers

Abstract

1 Introduction

2 Formulation of the Problem

3 Derivation of the Integral Equations

4 Results and Discussions

5 Concluding Remarks

References

A Study on the Constitutive Equation Effects in the Fracture Initiation of AA5450 Sheets

Abstract

1 Introduction

2 Experiments

3 Finite Element Model

4 Results and Discussions

5 Conclusions

References

Predicting the Failure Type of Liquid Hydrocarbon Pipeline Using Fuzzy Expert System

Abstract

1 Introduction

2 Fuzzy Expert Systems

3 Development of a Fuzzy Logic-Based Failure Model

3.1 Data Collection, Filtering and Classification

3.2 Fuzzy of Variables and Define Membership Functions

3.3 Establishing a Fuzzy Rule Base for FES

3.4 Model Implementation

3.5 Model Validation

4 Conclusion

References

Simulation of Loading Rate Effects on Dynamic Brittle Failure of Concrete Structures Using a Two-Scale Damage Model

1 Introduction

2 Dynamic Damage Model

3 Compact Tension Test

4 L-Shaped Specimen Test

5 Conclusions

References

Deformation Behavior and Fracture of Al-CuZr Nano-Laminates: A Molecular Dynamics Simulation Study

Abstract

1 Introduction

2 Simulation Methodology

3 Results and Discussions

4 Conclusions

References

Model of Damaged Medium for Describing Fatigue Fracture of Materials and Structures

Abstract

1 Introduction

2 Defining Relations of Mechanics of Damaged Media

3 The Investigation Results

4 Conclusion

Acknowledgements

References

Modeling of Fatigue Fracture of Coatings in Multi-cycle Friction Contact

Abstract

1 Introduction

2 Problem Formulation and the Method of Solution

2.1 Contact Problem Solution

2.2 Calculation of Internal Stresses

2.3 Model of the Contact Fatigue at the Layer-Substrate Interface

3 Results and Discussion

4 Conclusions

Acknowledgments

References

Research and Modeling of Stress-Strain State and Fracture Strength of Triplexes at Temperatures 293–213 K

Abstract

1 Introduction

2 Materials and Methods

2.1 Test Samples and Materials

2.2 Modeling of the Adhesion Processes and the Triplex Separate Layers Fracture in the Presence of Crack-Like Defects

2.3 Measurements

2.4 Methodology to Determine Stresses

3 Experimental Results

4 Analysis of the Experimental Results of Studies of Stress-Strain and Boundary States of the Triplex in the Temperature Range 293–213 K

5 Numerical Modeling of the Framing Influence on the SIF of Surface Cracks

5.1 Modeling Conditions

5.2 Numerical Results and Discussion

6 Conclusions

References

Influence of Low Temperature on Mechanical Properties of Carbon Steel P110 Estimated by Means of Small Punch Test

Abstract

1 Introduction

2 Experimental Methodology

3 Results and Discussion

4 Summary

Acknowledgements

References

Crack Propagation in Various Double Cantilever Beam Geometric Configurations

Abstract

1 Introduction

2 Procedures and Methodology Used

2.1 Williams Power Series

2.2 Over-Deterministic Method (ODM)

3 Cracked Geometry, Numerical Model, ODM, MTS Criterion

3.1 Investigated Cracked Geometry

3.2 Numerical Model in ANSYS

3.3 ODM Procedure

3.4 MTS Criterion Evaluation

4 Results and Discussion

5 Conclusion

Acknowledgements

References

Lateral Indentation and Impact Analyses on Curved Composite Shells

1 Introduction

2 Materials and Methods

2.1 Experimental Setup and Testing

2.2 Numerical Analyses

3 Results and Discussion

3.1 Sensitivity Analysis on the Hashin Parameters

4 Conclusions

References

Structured Learning-Based Sinusoidal Modelling for Gear Diagnosis and Prognosis

Abstract

1 Introduction

2 Problem Formulation

3 The Structured Learning Based Sinusoidal Modelling

4 Performance Investigation

5 Conclusion

References

Singular Stress Field of Interfacial Small Crack in Orthotropic Bonded Plate

Abstract

1 Introduction

2 Singular Stress Field of Interface Edge

2.1 Definition of Stress Intensity Factor

3 Method of Analysis

3.1 Analysis Condition

3.2 Determination of Stress Intensity Factor

4 Numerical Results and Discussions

4.1 Expression of Stress Intensity Factor of Small Edge Interface Crack

4.2 Effect of Material Combination

5 Conclusions

References

Comparative Research on Calculation Methods of Stress Intensity Factors and Crack Propagation Criterion

Abstract

1 Introduction

2 Calculation Methods of Stress Intensity Factor

3 Calculation Methods of Crack Propagation Criterion

4 Conclusions

Acknowledgements

References

Crack Identification Using eXtended IsoGeometric Analysis and Particle Swarm Optimization

Abstract

1 Introduction

2 Motivation and X-IGA Approach in Forward Problem

2.1 A Brief of B-Spline/NURBS Functions

2.2 XIGA Implementation

3 Particle Swarm Optimization (PSO)

4 Numerical Results

4.1 Cracked Plate - Scenario 1

4.2 Cracked Plate - Scenario 2

4.3 Cracked Plate - Scenario 3

4.4 Cracked Plate - Scenario 4

5 Conclusion

References

Fatigue

PWR Fatigue Testing at SCK•CEN in the Framework of INCEFA+

Abstract

1 Introduction

2 Material

3 Specimen

4 Environment

5 Fatigue Testing

6 Extensometers

7 Test Result

8 Discussion of Test Results

9 Conclusion

Acknowledgments

References

The Effect of Technological and Structural Factors on the Strength of Polyethylene Adhesive Joints

Abstract

1 Introduction

2 Methodology

2.1 Adherend

2.2 Surface Treatment

2.3 Adhesives

2.4 Adhesive Joints

2.5 Strength Tests and Statistical Analysis

3 Results

3.1 Results of Adhesive Joints Strength

3.2 Statistical Results of Adhesive Joints Strength

3.3 Elongation at Break of Adhesive Joints

3.4 Failure Patterns of Adhesive Joints

3.5 Results Discussion

4 Conclusions

References

Compression of Strain Load History Using Holder Exponents of Continuous Wavelet Transform

Abstract

1 Introduction

2 Theoretical Background

2.1 Singularities Detection with Holder Exponents

3 Methodology

3.1 Strain Signal Acquisition

3.2 Continuous Wavelet Transform and Lipschitz Regularity Analysis

3.3 Compression of Strain Time Histories and Fatigue Life Prediction

4 Results and Discussion

4.1 Continuous Wavelet Transform of Time History

4.2 Comparison of Lipschitz-Based and Time-Domain-Based FDE Techniques

5 Conclusions

Acknowledgements

References

Structural Optimization for the Gusset Plate in the Boom Structure of Concrete Pump Truck

Abstract

1 Introduction

2 General Introduction of CPT

2.1 Configuration of CPT

2.2 Loading Characterization

2.3 Gusset Plate

2.4 Representative of Region and Loading for Optimization

3 Design Of Experiment (DOE)

3.1 Design Process

3.2 Conceptual Design

3.3 Detailed Design

4 Conclusion

Acknowledgement

References

Failure Analysis of Prematurely Failed Hip Joint Implant Inside the Femur Bone

Abstract

1 Introduction

2 Experimental

2.1 Material

2.2 Method

3 Results and Discussion

3.1 Hardness and Bend Test

3.2 Chemical Analysis Test

3.3 Stereo Zoom and Optical Microscopy

3.4 SEM-EDS Analysis

4 Conclusions

Acknowledgements

References

Comparative Study of Defect-Based and Plastic Damage-Based Approaches for Fatigue Lifetime Calculation of Selective Laser-Melted AlSi12

Abstract

1 Introduction

2 Materials and Methods

2.1 Experimental Setup

2.2 Theory and Calculations

3 Results and Discussion

4 Conclusions and Outlook

Acknowledgements

References

Fatigue Damage of Waterwall Tubes in a 1000 MW USC Boiler

Abstract

1 Introduction

2 Description of the Boiler

3 Results and Discussion

3.1 Visual Observation

3.2 Chemical Analysis

3.3 Mechanical Properties

3.4 Microstructural Observation

3.5 Cracks and Fracture Analysis

3.6 EDS and XRD Phase Analysis

3.7 Root Cause Analysis

4 Conclusions and Recommendations

Acknowledgements

References

Fatigue of Steels Used in the Manufacture of Components for Heavy Load Vehicles

Abstract

1 Introduction

2 Experimental Procedure

3 Results and Discussion

4 Conclusions

Acknowledgements

References

Specimen Thickness Effects on Front Edge Shape of Fatigue Crack in Al7075-T6 Alloy

Abstract

1 Introduction

2 Material, Specimen and Experimental Procedures

3 Results and Discussion

3.1 Curvature Radius of Fatigue Crack Front Edge

3.2 Change in the Plastic Zone Size in the Specimen Thickness Direction

4 Conclusion

References

Finite Lifetime Estimation of Mechanical Assemblies Subjected to Fretting Fatigue Loading

Abstract

1 Introduction

2 The MWCM to Estimate Fatigue Life Under CA Multiaxial Fatigue Loading

3 The TCD Approach

4 Estimation of Stress Quantities Relative to the Critical Plane Under CA Multiaxial Loading

5 Formalization of the Design Methodology to Estimate Finite Lifetime of Mechanical Assemblies Under CA Fretting Fatigue Loading

6 Validation with Experimental Data

7 Results and Discussion

8 Conclusion

Acknowledgment

References

Probabilistic Modeling of Coating Delamination

Abstract

1 Problem Formulation and Resulting Equations

1.1 Discontinuous Solutions for Coated Half-Plane with Interface Cracks

1.2 J-Integrals and Stress Intensity Factors at Interface Crack Tips

2 Probabilistic Model of Cyclic Coating Delamination

3 Some Numerical Results

4 Conclusions

References

Failure of Giant Wheel Ride at an Amusement Park

Abstract

1 Introduction

2 The Parameters of the Central Shaft

3 Metallurgical Analysis

4 Structural/Stress Analysis

5 Conclusions

References

Thermal-Mechanical Fatigue Analysis of a Main Steam Isolation Valve of a Boiling Water Reactor-5

Abstract

1 Introduction

2 Statement of the Problem

3 Materials and Methods

4 Results

5 Conclusions

Acknowledgement

References

Influence of Soft Particle Peening Treatment on Fatigue Strength of Aluminum Alloy A5052

Abstract

1 Introduction

2 Influence of Hardness on Surface Modification Effect [13]

2.1 Experimental Method

2.2 Result of Extent of Wear and Vickers Hardness

3 Influence of Soft Resin Particle Peening on Fatigue Strength Characteristics of Aluminum Alloy A5052

3.1 Material and Experimental Procedure

3.2 Influence on Hardness Distribution, Surface Roughness and Residual Stress

3.3 Influence on Fatigue Strength

3.4 Consideration by Impact Energy

4 Conclusions

References

Fatigue Life Calculation of Load-Adapted Hybrid Angular Contact Ball Bearings

Abstract

1 Introduction

2 Method of Calculation

2.1 Input Parameters

2.2 FE Model

2.3 Calculation of Bearing Fatigue Life

3 Calculational Results

4 Conclusion and Outlook

Acknowledgments

References

The Influence of Hydrogen on Fatigue Fracture in Mooring Chain Steel

Abstract

1 Introduction

2 Experimental Procedure and Methods

2.1 Materials

2.2 Microscopic Observation

2.3 Mechanical Tests

2.4 Methods

3 Results

4 Discussion

5 Conclusions

Acknowledgements

References

Monitoring Micro-damage Evolution in Structural Steel S355 Using Speckle Interferometry

Abstract

1 Introduction

2 Basics on Fatigue Damage and Metrology

2.1 Stages of Cyclic Damage

2.2 Experimental Background on Damage Assessment

2.3 Fundamentals of Speckle Interferometry

3 Experimental Methods and Materials

4 Measurement Results

5 Summary and Outlook

Acknowledgment

References

On an Extension of the Fatemi and Socie Equation for Rolling Contact in Rolling Bearings

Abstract

1 Introduction

2 Theory and Description

2.1 Critical Plane Criterion of Fatemi and Socie

2.2 Determination of Shear Strain Amplitude and Normal Stress

3 Application to Rolling Contact

3.1 Configuration

3.2 Influence of the Normal Stress in the Critical Plane

4 Simulations Results

4.1 Critical Plane Orientation and Location

4.2 Crack Initiation Lifetime Calculation in the Approach A1 and A2

4.3 Comparison with Standard DIN ISO 281

5 Conclusion

References

Durability of Steel Joints with Ductile Adhesive Subjected to Fatigue Tests

Abstract

1 Introduction

2 Experimental

3 Results and Discussion

4 Conclusions

References

Effect of an Adhesive Bonding on the Fatigue Life of Advanced High Strength Steel Spot-Welds

Abstract

1 Introduction

2 Specimen Preparation

3 Test Results and Discussion

3.1 Thickness Dependence of the Joint Strength

3.2 Sheet Strength Dependence of the Joint Strength

4 Conclusions

Acknowledgement

References

Fatigue Life Predictions for L-Shaped Cracks

Abstract

1 Introduction

2 Methodology and Formulation

2.1 Normal Crack Front Advance

2.2 Length Advance

3 Results and Discussion

3.1 Normal Crack Front Advance

3.2 Length Advance

4 Conclusions

Acknowledgements

References

Modelling of Short Crack Arrest and Fatigue Propagation Using Non-local Fracture Criteria

Abstract

1 Introduction

2 Non-local Fracture Criteria

3 Dugdale’s Crack Model

4 Fatigue Growth of the Short Cracks

5 Arrest of the Short Cracks

6 Conclusions

References

Critical Analysis of Randomly Rough Surfaces for Contact Mechanics Through Statistical Simulation

Abstract

1 Introduction

2 Simulation Methods

3 Simulations and Simulation Results

4 Discussion

5 Conclusions

Acknowledgements

References

Panel Test for New Developed Airbus A321 ACF Overwing Door and Surrounding Structure

Abstract

1 Introduction into the A321neo ACF Project

2 Influence of Design on Verification and Validation Needs

3 Test Scenario

4 Description of Chosen Test Set-up

5 Specimen Adaptation to Test Needs

6 Test Program

7 Conclusion

Acknowledgement

References

Strain Rate Concentration Factor for Round and Flat Test Specimens

Abstract

1 Introduction

2 Definition of Strain Rate Concentration Factor

3 Strain Rate Concentration for the Round and Flat Specimen

4 Relationship Between the Strain Rate Concentration Factor and the Stress Concentration Factor

5 Conclusion

References

A Comparison Between Critical-Plane and Stress-Invariant Approaches for the Prediction of Fretting Fatigue Crack Nucleation

Abstract

1 Introduction

2 Theoretical Background

2.1 Critical Plane Approach

2.2 Stress Invariant Approach

3 Experimental Data

4 Methodology

4.1 Nucleation Life

4.2 Propagation Life

5 Results

5.1 Comparison of Initiation Location

5.2 Comparison of Fretting Fatigue Life

6 Conclusions

Acknowledgement

References

Effect of Short Crack Behavior on the Propagation Life Prediction for a Fretting Cylindrical Pad Configuration

Abstract

1 Introduction

2 Numerical Analysis

2.1 Finite Element Model

2.2 Life Predictions

3 Results

4 Conclusions

Acknowledgements

References

Simulation of Cyclic Deformation Behavior of Ferritic P92 Steel Based on Unified Viscoplastic Model

Abstract

1 Introduction

2 Experimental Procedure

3 Experimental Results and Discussion

4 Simulation of LCF and CFI Deformation

4.1 Constitutive Model

4.2 Determination of Material Parameters

4.3 Simulation Results and Discussion

5 Conclusion

Acknowledgements

References

Fatigue Life Analysis of Un-repaired and Repaired Metallic Substrate Using FRANC2D

Abstract

1 Introduction

2 Materials and Methodology

2.1 Materials

2.2 Modelling in FRANC2D/L

3 Results and Discussion

4 Conclusions

Acknowledgements

References

Wear

Effect of Cryosoaking Period on Soft Tempering Temperature and Wear Mechanism in AISI H11 Tool Steel

Abstract

1 Introduction

2 Experimental Procedures

2.1 Material Selection

2.2 Heat Treatment and Cryogenic Treatment

2.3 Hardness Test

2.4 Wear Test

2.5 Metallography

3 Results and Discussion

3.1 Hardness Variation

3.2 Morphology of Carbides

3.3 Wear Mechanism

3.4 Standardization of Soft Tempering Temperature

4 Conclusions

References

Dry Wear Behavior of Basalt/Carbon-Reinforced Epoxy Composite by Taguchi Method

Abstract

1 Introduction

2 Materials

2.1 Experimental Design

2.2 Wear Tests

3 Results and Discussion

3.1 Analysis of Weight Loss

3.2 Anova

4 Conclusions

References

Wear Property of Epoxy Reinforced with Carbon Using a Response Surface Methodology

Abstract

1 Introduction

2 Materials

2.1 Experimental Design

2.2 Wear Tests

3 Results and Discussion

3.1 Weight Loss

3.2 Anova

3.3 Regression Analysis

3.4 Optimization of Responses

4 Conclusions

References

Microabrasive Wear of Titanium Chrome Plated

Abstract

1 Introduction

2 Methods

2.1 Electrolytic Chromium Deposit

2.2 Testing Equipment

2.3 Test Method

2.4 Characteristics of the Specimens

2.5 Hardness Evaluation

2.6 Wear Tests of the Uncoated Specimens of Titanium

2.7 Wear Tests of the Titanium Specimens Coated with Chrome

3 Discussion

4 Conclusions

References

Experimental Investigate of the Wear and Friction Performance Considering Effects of Surface Topography and Lubricant

Abstract

1 Introduction

2 Effects of Surface Topography

3 Effects of Lubricant Characteristics

4 Conclusion

Acknowledgments

References

Experimental Simulation and Analysis of Die Casting Mould Wear

Abstract

1 Introduction

2 Prototype Wear Testing Equipment

3 Experimental Work

3.1 Samples

3.2 Experiment Parameters

3.3 Results and Analysis

4 Conclusion

Acknowledgements

References

Structure and Properties of the New Antifriction Composite Materials for High-Temperature Friction Units

Abstract

1 Introduction

2 Experimental Procedure

3 Conclusion

References

Comprehension of Thermomechanical Phenomena and Material Behavior During High Speed Contact

Abstract

1 Introduction

2 Contact Interaction at ENIT

2.1 Presentation of the Test Device

2.2 Test Device Instrumentation

2.3 Contact Pieces and Contact Geometry

2.4 Test Procedure

2.5 Presented Tests

3 Data Analysis

3.1 Force Analysis

3.2 Friction Analysis

3.3 Temperature Analysis

3.4 Wear Analysis

4 Discussion

5 Conclusion

References

An Investigation into the Early Life Cycle Wear-Induced Failure of an All-Terrain Vehicle Ball Joint Cotter Pin

Abstract

1 Cotter Pin and Castle Nut Discussion

2 Accident Summary and Investigation

2.1 Accident Facts and Summary

2.2 Accident Vehicle Investigation

2.3 Subsequent Research and Investigation

3 Ball Joint Analysis

4 Exemplar Parts Testing, Results, and Comparisons with the Subject Cotter Pin Pieces

5 Conclusions

References

In-manufacture Running-in of Engine Components by Using the Triboconditioning® Process

Abstract

1 Introduction

2 Part Preparation and Testing

3 Results and Discussion

3.1 Effect of Triboconditioning® on Valve Train Friction and Wear

3.2 Effect of Triboconditioning® on Piston-Bore Friction and Wear

3.3 Development of Bushingless Connecting Rods via Triboconditioning®

4 Conclusions

References

Wear Behavior of ZrO2 Particle Reinforced (Fe,Ni) Matrix Composite

Abstract

1 Introduction

2 Experimental

3 Results and Discussion

3.1 X-Ray Diffraction (XRD)

3.2 Density

3.3 Wear Properties

3.4 Corrosion Behavior

4 Conclusion

References

Nanoscale Wear of Carbon Overcoat Subjected to Laser Heating in an Inert Gas Environment

Abstract

1 Introduction

2 Experimental

2.1 Test Pin and Disk

2.2 Experimental Setup [11]

2.3 Evaluation Method of DLC Wear on the Pin and Magnetic Disk Surfaces

3 Experimental Results and Discussion

3.1 In the Case Without Laser Heating

3.2 In the Case with Laser Heating

3.3 Observation of the DLC Thin Film on the Magnetic Disk Surface After Friction Wear Test

4 Conclusion

Acknowledgment

References

Wear Simulation Method for Mechanical Seals Under Mixed Lubrication Using Flow Factors

Abstract

1 Introduction

2 Mixed TEHD Lubrication Model

2.1 Fluid Mechanics Analysis

2.2 Asperity Contact Mechanics Analysis

2.3 Thermomechanics Analysis

2.4 Force Balance Mechanisms Analysis

2.5 Coupling Relationship

3 Wear Mechanisms Analysis and Numerical Algorithm

3.1 Wear Mechanisms Analysis

3.2 Numerical Algorithm

4 Simulation Studies and Discussions

4.1 Effects of Sealed Fluid Pressure

4.2 Effects of Rotating Speed

4.3 Effects of Roughness

5 Conclusions and Future Work

Acknowledgments

References

Boride Coating on Titanium Alloys as Biomaterial in Wear and Fretting Applications

Abstract

1 Introduction

2 Materials and Methods

3 Results and Discussion

3.1 Microstructure

3.2 Morphology and Thickness

3.3 Phase Composition

3.4 Hardness

3.5 Adhesion

3.6 Wear

4 Conclusions

Acknowledgments

References

Wear Behavior of ZTA Reinforced Iron Matrix Composites

Abstract

1 Introduction

2 Experimental Details

2.1 Composites Preparation

2.2 Sliding Wear Test

2.3 Three-Body Abrasive Wear Test

3 Results and Discussion

3.1 Microstructure and Properties

3.2 Sliding Wear

3.3 Three-Body Abrasive Wear Resistance

4 Conclusions

References

Friction and Wear of Mouthguard Material with a Laser-Textured Surface in Reciprocating Sliding Motion

Abstract

1 Introduction

2 Experimental Apparatus and Procedure

3 Results and Discussion

3.1 Effects of Pit Diameter

3.2 Effects of Pit Area Ratio

3.3 SEM Observations of Wear Processes

4 Conclusions

References

Effect of Prior Ratcheting Deformation on Low Cycle Fatigue Behaviour of AISI 4340 Steel

Abstract

1 Introduction

2 Experimental Details

2.1 Material Selection, Heat Treatment, Basic Metallography and Specimen Design

2.2 Ratcheting and Post-ratcheting Low Cycle Fatigue Tests

3 Results and Discussion

3.1 Microstructural Analysis

3.2 Hardness and Tensile Properties

3.3 Ratcheting Behavior Under Varying Stress Ratios

3.4 Effect of Previous Ratcheting Deformation on Low Cycle Fatigue Behaviour of the Steel

4 Conclusions

References

Finite Element Model in Abrasion Analysis for Single-Asperity Scratch Test

Abstract

1 Introduction

2 Material Characterization

2.1 Material

2.2 Experimental Characterization

2.3 Uniaxial Tensile Test

2.4 Fracture Tensile Test

3 Material Model Calibration

3.1 Finite-Element (FE) Model

3.2 Flow Curve Extrapolation

3.3 MBW Model Calibration

4 Model Application: Single Asperity Test

4.1 Experiments

4.2 Simulation

5 Conclusions

Acknowledgements

References

Analysis of the Fretting Wear Phenomenon on the Surface Coatings of Form-Wound Coil

Abstract

1 Introduction

2 Fretting Wear

2.1 Fretting Wear Mechanism

3 Experimental Setup

4 Experimental Results

4.1 Experimental Procedure

5 Discussion

6 Conclusions

References

Tribological and Mechanical Properties of Polyester Based Composites with SiC Particles

Abstract

1 Introduction

2 Experimental Procedure

2.1 Materials

2.2 Characterization Techniques

3 Results

4 Conclusions

Acknowledgments

References

Numerical Calculation of Local Adhesive Wear in Machine Elements Under Boundary Lubrication Considering the Surface Roughness

Abstract

1 Introduction

2 Numerical Wear Calculation

2.1 Wear Modelling

2.2 Local Wear Modelling

3 Calculation Results

3.1 Calculation of the Wear Coefficient

3.2 Calculation of Wear in Machine Elements

4 Validation

4.1 Test Results

4.2 Comparison

5 Summary and Outlook

References

Numerical Investigation and Optimization of Loosening Behavior of Wheel Nuts for Passenger Cars

Abstract

1 Introduction

2 Experiments and Simulations

3 Results and Discussions

4 Conclusions

Acknowledgement

References

Optimization of Rigidity of Aluminum Alloy Wheels

Abstract

1 Introduction

2 Simulation and Optimization

3 Results and Discussions

4 Conclusions

References