ADHESION MEASUREMENT METHODS: THEORY AND PRACTICE

MST CONFERENCES is happy to announce the availability of our recently published volume: Adhesion Measurement Methods: Theory and Practice (CRC Press, Taylor & Francis Group, LLC, Broken Sound Parkway, Boca Raton, Florida) 439 pages. Designed to supplement the SHORT COURSE ON APPLIED ADHESION MEASUREMENT METHODS this volume presents optimal methods and tools used for measuring the adhesion of coatings and thin films as well as setting appropriate adhesion strength requirements. The text provides a detailed overview of uses, implementation, and drawbacks for qualitative, semi-quantitative, and fully quantitative adhesion measurement techniques and self-loading systems. The book discusses thermal-mechanical behavior assessment, the application of the continuum theory of solids, and fracture mechanics, highlighting useful measures of adhesion strength such as stress intensity factor and strain energy release rate. It provides specific examples of how adhesion testing is carried out in practice, including the peel test, the scratch test, and the pull test, and describes the measurement of residual stress in a coating and other laminate structures. The book concludes with examples taken from the author's experience in the microelectronics industry and contains several appendices for looking up simple formulae and material property data for performing everyday calculations.



TABLE OF CONTENTS

Below is a copy of the table of contents for this volume. Simply click on the chapter you find most interesting.

1. INTRODUCTION

2. OVERVIEW OF MOST COMMON ADHESION MEASUREMENT METHODS

3 THEORETICAL FOUNDATIONS OF QUANTITATIVE ADHESION MEASUREMENT METHODS

4. ELEMENTARY FRACTURE MECHANICS OF SOLIDS - APPLICATION TO PROBLEMS OF ADHESION

5 APPLIED ADHESION TESTING

6 ADHESION ASPECTS OF COATING AND THIN FILM STRESSES

7 CASE STUDIES FROM THE FIELD

APPENDICES


1. INTRODUCTION

1.1 OVERVIEW

1.2 WHAT IS ADHESION AND CAN IT BE MEASURED?

1.3 COMMENTS ON NOMENCLATURE AND USAGE



2.OVERVIEW OF MOST COMMON ADHESION MEASUREMENT METHODS

2.1 PREAMBLE

2.2 PEEL TEST

2.2.1 Introduction

2.2.2 Advantages of Peel Test

2.2.3 Disadvantages of Peel Test

2.2.4 Summary and Recommendations

2.3 TAPE PEEL TEST

2.3.1 Introduction

2.3.2 Advantages of the Tape Peel Test

2.3.3 Disadvantages of Tape Peel Test

2.3.4 Summary and Recommendations

2.4 PULL TEST

2.4.1 Introduction

2.4.2 Advantages of Pull Test

2.4.3 Disadvantages of the Pull Test

2.4.4 Summary and Recommendations

2.5 INDENTATION DEBONDING TEST

2.5.1 Introduction

2.5.2 Advantages of Indentation Debonding Test

2.5.3 Disadvantages of Indentation Debonding Test

2.5.4 Summary and Recommendations

2.6 SCRATCH TEST

2.6.1 Introduction

2.6.2 Advantages of the Scratch Test

2.6.3 Disadvantages of the Scratch Test

2.6.4 Summary and Recommendations

2.7 BLISTER TEST

2.7.1 Introduction

2.7.2 Advantages of Blister Test

2.7.3 Disadvantages of the Blister Test

2.7.4 Summary and Recommendations

2.8 BEAM BENDING TESTS

2.8.1 Introduction

2.8.2 Three Point Bend Test

2.8.3 Four Point Bend Test

2.8.4 Standard Double Cantilevered Beam Test

2.8.5 Tapered Double Cantilevered Beam Test

2.8.6 Double Cleavage Drilled Compression Test

2.8.7 Brazil Nut Test

2.8.8 Wedge Test

2.8.9 Topple Beam Test

2.8.10 Advantages of Beam Bending Tests

2.8.11 Disadvantages of Beam Bending Tests

2.8.12 Summary and Recommendations



2.9 SELF LOADING TESTS

2.9.1 Circle Cut Test

2.9.2 MELT Test

2.9.3 Microstrip Test

2.9.4 Advantages of Self Loading Tests

2.9.5 Disadvantages of Self Loading Tests

2.9.6 Summary and Recommendations

2.10 MORE EXOTIC ADHESION MEASUREMENT METHODS

2.10.1 Laser Spallation: Early Work

2.10.2 Later Refined Experiments

2.10.3 LIDS Experiment

2.10.4 Advantages of Laser Spallation Tests

2.10.5 Disadvantages of Laser Spallation Test

2.10.6 Summary and Recommendations



2.11 ELECTROMAGNETIC TEST

2.11.1 Advantages of Electromagnetic Test

2.11.2 Disadvantages of Electromagnetic Test

2.11.3 Summary and Recommendations

2.12 NON-DESTRUCTIVE TESTS

2.12.1 Dynamic Modulus Test

2.12.2 Advantages of Dynamic Modulus Test

2.12.3 Disdvantages of Dynamic Modulus Test

2.12.4 Summary and Recommendations

2.13 Surface Acoustic Waves Test

2.13.1 Advantages of Surface Acoustic Waves Test

2.13.2 Disadvantages of Surface Acoustic Waves Test

2.13.3 Summary and Recommendations



REFERENCES

3 THEORETICAL FOUNDATIONS OF QUANTITATIVE ADHESION MEASUREMENT METHODS

3.1 INTRODUCTION TO CONTINUUM THEORY

3.1.1 Concept of Stress in Solids

3.1.2 Special Stress States and Stress Conditions

3.1.2.1 Principal stresses

3.1.2.2 St. Venant's principle

3.1.2.3 Two dimensional stress states

3.1.3 Equation of Motion in Solids

3.1.4 Deformation and Strain

3.1.5 Constitutive Relations or Connecting the Stress to the Strain

3.1.5.1 General behavior

3.1.5.2 Homogeneous isotropic materials

3.2 EXAMPLES

3.2.1 Simple Deformations



3.3 SOLVING THE FIELD EQUATIONS

3.3.1 Uniaxial Tension

3.3.2 Biaxial Tension

3.3.3 Triaxial Stress Case



3.4 APPLICATION TO SIMPLE BEAMS





3.5 GENERAL METHODS FOR SOLVING FIELD EQUATIONS OF ELASTICITY

3.5.1 Displacement Formulation

3.5.2 Stress Formulation

3.5.3 Mixed formulation

3.6 NUMERICAL METHODS

3.6.1 Introduction



3.7 DETAILED STRESS BEHAVIOR OF A FLEXIBLE COATING ON A RIGID DISK

3.8 STRAIN ENERGY PRINCIPLES



3.9 THE MARVELOUS MYSTERIOUS J INTEGRAL



3.10 SUMMARY



REFERENCES

4. ELEMENTARY FRACTURE MECHANICS OF SOLIDS - APPLICATION TO PROBLEMS OF ADHESION



4.1 INTRODUCTION

4.1.1 Introductory Concepts

4.1.1.1 Strain energy approach

4.1.1.2 Stress intensity factor approach



4.2 FRACTURE MECHANICS AS APPLIED TO PROBLEMS OF ADHESION

4.2.1 Elementary Computational Methods

4.2.1.1 Basic model of thin coating on rigid disc

4.2.2 Decohesion Number Approach of Suo and Hutchinson

4.2.2.1 The decohesion number

4.2.3 Back of the Envelope Calculations

4.2.3.1 Polyimide on glass-ceramic

4.2.3.2 Nickel on glass


4.3 SUMMARY

5 APPLIED ADHESION TESTING



5.1 THE PEEL TEST

5.1.1 Sample Preparation

5.1.2 Test Equipment

5.1.3 Peel Testing in Action

5.1.4 Advanced Peel Testing

5.1.4.1 Thermodynamics of the peel test

5.1.4.2 Deformation calorimetry



5.2 FULLY QUANTITATIVE PEEL TESTING

5.2.1 Earliest Work, Elastic Analysis

5.2.2 Elastic-Plastic Analysis

5.2.2.1 Theory of elastic-plastic peeling for soft metals

5.2.3 Full Elastic-Plastic Analysis

5.2.3.1 General equations for deformation of peel strip

5.2.3.2 Basic goal

5.2.3.3 Analysis strategy and assumptions

5.2.3.3 Equations of the elastica

5.2.2.2 Case 1, elastic peeling:

5.2.2.3 Case 2, elastic-plastic peeling/unloading

5.2.2.4 Case 3, elastic plastic loading and unloading



5.3 THE SCRATCH/CUT TEST

5.3.1 the Cut Test

5.3.2 Simplified Analytical Model for Cut Test



5.4 THE PULL TEST



5.5 SUMMARY

REFERENCES



6 ADHESION ASPECTS OF COATING AND THIN FILM STRESSES



6.1 INTRODUCTION

6.2 GENERAL MEASUREMENT METHODS FOR THIN FILMS AND COATINGS

6.2.1 Cantilevered beam method

6.2.2 Variations on Bending Beam Approach

6.2.3 Optical measurement of deflection

6.2.3.1 Microscopy

6.2.3.2 Laser beam deflection

6.2.3.3 Laser interferometry

6.2.3.4 Capacitive measurement of deflection

6.2.3.5 Stress Measurement by Vibrational Resonance

6.2.3.6 Holography of suspended membrane

6.2.4 X-ray Measurements

6.2.5 Ultrasonics

6.2.5.1 Through thickness stress measurement

6.2.5.2 Surface stress measurement using skimming longitudinal waves

6.2.5.3 Rayleigh wave method

6.2.5.4 Surface skimming SH waves

6.2.6 Photoelasticity

6.2.7 Strain Relief Methods

6.2.8 Magnetics

6.2.8.1 Barkhausen noise

6.2.8.2 Magnetostriction approach

6.2.9 Raman spectroscopy

6.2.10 Miscellaneous Methods

6.2.10.1 Stress Pattern Analysis by Thermal Emission (SPATE)

6.2.10.2 Photoelastic coating technique

6.2.10.3 Brittle lacquer method



7 CASE STUDIES FROM THE FIELD



7.1 A STUDY IN ADHESION SENSITIVITY TO CONTAMINATION



7.2 CASE OF THE IMPROPERLY CURED FILM



7.3 CASE OF THE STRESSED PIN



7.4 STABILITY MAPS

APPENDICES



APPENDIX A: VECTORS AND VECTOR CALCULUS

APPENDIX B: NOTES ON ELEMENTARY STRENGTH OF MATERIALS (SOM) THEORY

APPENDIX C: MATERIAL PROPERTY DATA FOR SELECTED SUBSTANCES

APPENDIX D: DRIVING FORCE FORMULAE FOR A VARIETY OF LAMINATE STRUCTURES

APPENDIX E: SELECTED REFERENCES AND COMMENTARY ON ADHESION MEASUREMENT AND FILM STRESS LITERATURE

E1: GENERAL REFERENCES

E2: SELECTED REFERENCES ON ADHESION MEASUREMENT METHODS E4

E2.1 Blister test:

E2.2 Scratch Test:

E2.3 Indentation Debonding Test

E2.4 Scotch Tape Test

E2.5 Laser Spallation

E2.6 Selected References on Mechanics of Peel Test

E2.7 Non Destructive Methods

E3 SELECTED REFERENCES ON STRESSES IN LAMINATE STRUCTURES AND COATINGS

E4 SELECTED REFERENCES ON FRACTURE MECHANICS AS RELATED TO PROBLEMS OF ADHESION OF FILMS AND COATINGS

E5 SELECTED REFERENCES ON STRESSES IN SOLIDS



APPENDIX F: GENERAL ADHESION MEASUREMENT REFERENCES

REVIEW ARTICLES

GENERAL ADHESION PAPERS

ACOUSTIC EMISSION/ULTRASONIC METHODS

BEND TEST

BLISTER TEST

DOUBLE CANTILEVERED BEAM TEST

CENTRIFUGAL LOADING TEST

ELECTROMAGNETIC TEST

FRACTURE MECHANICS STUDIES

INDENTATION TEST

INTERNAL FRICTION

IMPACT METHODS

LAP SHEAR TEST

LASER/ELECTRON SPALLATION

MISCELLANEOUS METHODS

PEEL TEST

PULL TEST

PULL OUT TEST

PUSH OUT TEST

RESIDUAL STRESS SELF LOADING TEST

SCRATCH TEST

TAPE TEST

THEORETICAL STUDIES

THERMAL METHODS

TOPPLE BEAM METHOD

WEDGE TEST


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