Description
Impact Wear of Materials is entirely devoted to quantitative treatment of various forms of wear occurring in impact-loaded mechanical components. Impact wear is classified under two headings, namely `erosive' and `percussive' wear. In erosive wear, particle streams and liquid jets are discussed. The subject is developed with emphasis on material relations, stress analysis and the historical progress of research. In percussive wear, a wide variety of wear mechanisms is described.
The author's experimental/analytical work created the groundwork for a general procedure of impact wear-law formulation, combining impact analysis with the physical wear mechanism. Ballistic impact and pivotal hammering, compound impact, the optimal wearpath, lubrication, plasticity, and flexible media are some of the topics considered.
The book develops a new conceptual approach to impact, impact-originated wear and wear in general. It describes and utilizes the modern tools of observation in wear science. In mechanical analysis it emphasizes quantitative treatment, using such tools as finite element stress analysis, APL programming language etc., each applied with classic simplicity. Numerous photographs, tables, figures and examples are used throughout the text and the mathematical treatment strives for simplicity and conceptual clarity. The book is of value to mechanical component designers, analysts and researchers. It is also useful in science and engineering curricula at
Chapter
2. The Adhesive Wear Theory
3. The Abrasive Wear Theory
7. The Delamination Theory of Wear
8. Friction and Wear of Polymers
9. Lubrication of Sliding and Rolling Elements
10. Rolling Wear and Contact Fatigue
CHAPTER 2. METHODS OF PERCUSSIVE IMPACT ANALYSIS
2. Stereomechanical Impact Analysis
3. Hertz Contact Analysis
4. The State of Stress in Contacts
5. Quasi-static (Hertz) Impact Analysis
6. Numerical Methods of Impact Stress Analysis – Non-Hertzian Problems
7. Combined Stress Wave and Hertz Impact Analysis
8. Matrix Methods of Impact Analysis
CHAPTER 3. IMPACT RESPONSE OF ENGINEERING SURFACES
2. Plastic Deformation in lmpact
3. Impact on Elastic Layers
5. Contact with Shear Tractions
7. Impact on Lubricated Contacts
8. Thermal Effects of Impact
CHAPTER 4. EROSION BY SOLID PARTICLES: DUCTILE AND BRITTLE THEORIES
2. The Theory of Erosive Cutting
3. Brittle Erosion Theories
4. Combined Theory of Erosion
CHAPTER 5. GENERAL ASPECTS OF SOLID PARTICLE EROSION
1. Particle Fragmentation and Deposition
2. The Trajectory and Speed of Particles in a Fluid Stream
3. Single Particle Studies
4. Empirical Approaches for Fitting Erosion Data
5. Industrial Uses of Solid Particle Impacting
CHAPTER 6. EXPERIMENTAL BACKGROUND OF PERCUSSIVE IMPACT WEAR
2. Methods of Measurement for Impact Wear Parameters
3. Ballistic Impact-Wear Experiments
4. Pivotal Hammering Impact-Wear Tests
CHAPTER 7. THE ZERO IMPACT WEAR MODEL
2. Basic Compound Impact Model
3. The Zero Impact Wear Equation
4. Proposed Calculation of Surface Damage Contribution Factor, β
5. Evaluation of r and n from Ballistic lmpact Wear Tests
6. Universal Applicability of the Compound Impact Zero Wear Model
7. Effect of Hammer Rotation on the Compound Impact Conditions
8. Spring Restraint on Striker
9. Other-than-Sinusoidal Impulse
10. Equivalent Zero Wear Limit
11. Summary of Generalized Compound Impact Computation
CHAPTER 8. MEASURABLE IMPACT WEAR THEORY
3. Measurable Impact Wear Formulation
4. Measurable Impact Wear Solutions for Cylinders
6. Measurable Wear Formulation for Compound Impact
7. Some Experimental Results for Dry, Measurable Compound Impact Wear
8. The Role of Fretting in Impact Wear
9. Impact Wear of Lubricated Contacts
10. Two-body Wear Analysis
CHAPTER 9. IMPACT WEAR IN THE PLASTIC STRESS RANGE
2. The Stuttgart Experimental Work
3. Extension of the Measurable Impact Wear Analysis
4. Ballistic Impact Wear Experiments on Zinc and Powder-reinforced Zinc Projectiles
5. Measurable Wear Calculations on Zinc Composite Projectile Wear
CHAPTER 10. IMPACT WEAR THROUGH FLEXIBLE MEDIA
2. Wear of a Type Character Printing on Paper
4. Metal Surface Protected by Thin Polymer Film
5. Impact Wear of Elastomer Slabs
CHAPTER 11. LIQUID EROSION
2. Liquid Impact Analysis
3. Failure Mechanisms due to Liquid Impact
4. Erosion by Repetitive Liquid Impact
APPENDIX 1: COMPUTER PROGRAMS IN APL PROGRAMMING LANGUAGE
4th-Order Runge-Kutta Integration
Hammer Impact on Elastic Medium
APPENDIX 2: ELASTIC CONTACT SOLUTIONS
Spherical Contact – Normal Pressure
Spherical Contact – Shear Traction Only
Cylindrical Contact with Friction
APPENDIX 3: HARDNESS TESTS
APPENDIX 4: SURFACE TEXTURE
Impact Wear of Materials
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