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Technical Tidbits Archive: 2012-2014

To learn more about the materials we develop, read about our high performance alloys.


  1. PDF icon Fatigue-Issue 72-December 2014

    Explore some of the unexpected ways that fatigue failures can crop into your designs.

  2. PDF icon Fatigue Failure Diagnosis-Issue 71-November 2014

    See how fatigue failures are diagnosed in the field, and how to distinguish them from other failure modes.

  3. PDF icon Simulating Fatigue Behavior-Issue 70-October 2014

    Discover how to use finite element analysis and other simulation methods to estimate fatigue life.

  4. PDF icon Linear Elastic Fracture Mechanics Fatigue Analysis-Issue 69-September 2014

    Learn about the fracture mechanics fatigue method, and how it is used to generate Paris Law constants.

  5. PDF icon Stress Intensity and Fracture Toughness-Issue 68-August 2014

    Introduce yourself to the concepts of fracture toughness, and learn what stress intensity is.

  6. PDF icon Strain Life Fatigue Analysis Methods-Issue No 67-July 2014

    Consider the advantages and disadvantages of stress life and strain life fatigue methods compared side by side.

  7. PDF icon Introduction to the Strain Life Fatigue Method-Issue 66-June 2014

    Familiarize yourself with strain life fatigue methods, useful at lower cycles than stress life fatigue methods.

  8. PDF icon Stress Life Fatigue Methods-Issue 65-May 2014

    Review the concepts of stress life discussed previously and read some relevant commentary on the accuracy and usefulness of this method.

  9. PDF icon Goodman (Haigh) and Other Related Diagrams-Issue 64-April 2014

    Learn about Goodman and other diagrams that are used to determine maximum allowable alternating stresses under a given loading condition.

  10. PDF icon Mean Stress and Alternating Stress-Issue 63-March 2014

    Discover how to use S-N data generated in fully reversed cyclic loading to estimate life under loading conditions with different stress ratios.

  11. PDF icon Fatigue Life Prediction Using S-N (Wohler) Diagrams-Issue 62-February 2014

    Find out how to properly estimate the fatigue life or fatigue strength of your component using statistically relevant data and the appropriate modification factors.

  12. PDF icon Variables Affecting Fatigue Performance-Issue 61-January 2014

    Examine other variables such as anisotropy or edge condition that may affect the service life of your particular application.

  13. PDF icon Effect of Stress Concentration Factors on Fatigue Life-Issue 60-December 2013

    Consider how the stress concentration effects of notches, grooves, and corners can reduce the fatigue life of your components.

  14. PDF icon Fatigue Strength Modifying Factors-Part 3-Issue 59-November 2013

    Determine the effects of component size, geometry, and loading on the fatigue performance of your design.

  15. PDF icon Fatigue Strength Modifying Factors-Part 2-Issue 58-October 2013

    Discover how to estimate the fatigue strength or fatigue life of your part at temperatures greater than the test temperature.

  16. PDF icon Fatigue Strength Modifying Factors-Part 1-Issue 57-September 2013

    Read about how the condition of the surface of your part can affect the fatigue life.

  17. PDF icon Statistical Analysis of S-N Wohler Diagrams-Issue 56-August 2013

    See how to come up with a statistically meaningful and relevant fatigue strength or maximum allowable stress for your application.

  18. PDF icon S-N Wohler Diagrams-Issue 55-July 2013

    Examine how the results of fatigue test data are plotted in a usable manner, and how fatigue strength is defined on a case by case basis.

  19. PDF icon Characterization of Fatigue Behavior-Issue 54-June 2013

    Familiarize yourself with how and for how long the fatigue behavior of a material is characterized.

  20. PDF icon Fatigue and Stress Ratios-Issue 53-May 2013

    Learn how the stress ratio describes the severity of a particular cyclical loading cycle, and provides insight into what testing you need to do to ensure reliability.

  21. PDF icon Introduction to Fatigue-Issue 52-April 2013

    Introduce yourself to the concept of fatigue failure, and what you can do to prevent the process from causing your design to fail.

  22. PDF icon Strain Hardening And Formability-Issue 51-March 2013

    Explore how anisotropy and the strain hardening behavior of a material affects how easily you can form it.

  23. PDF icon Strain Hardening-Issue 50-February 2013

    Learn about strain hardening in a material, and how it governs the manufacturing and peformance of that material in your designs.

  24. PDF icon Tensile Strength Considerations-Issue 49-January 2013

    See how easily-measured tensile strength is determined, and how a material's ductility (or lack thereof) influences the appearance of the fracture in a tensile test.

  25. PDF icon Elastic Modulus-Issue 48-December 2012

    Discover how the elastic modulus helps to determine the performance of your connector design in multiple ways.

  26. PDF icon Yield Strength And Other Near Elastic Properties-Issue 47-November 2012

    Learn the importance of near elastic properties, and the various tests that are used to determine them.

  27. PDF icon Stress-Strain Concepts Revisited-Part 2-Issue 46-October 2012

    Introduce yourself to the important material properties derived from a stress-strain curve, and how the tensile test is instrumental in obtaining them.

  28. PDF icon Stress-Strain Concepts Revisited-Part 1-Issue 45-September 2012

    Learn how a tensile test is used to generate a stress-strain curve, which contains many important material properties you need to know about.

  29. PDF icon Connector Insertion Force-Issue 44-August 2012

    Find out how to minimize the insertion force upon mating your connector, without degrading the electrical contact performance.

  30. PDF icon Alloy 390-Issue 43-July 2012

    Learn about Alloy 390, an alloy with strength near that of high strength copper beryllium and conductivity near that of high conductivity copper beryllium.

  31. PDF icon Summary Of Electrical Contact Coatings-Issue 42-June 2012

    Review the different considerations for various coating types, and how to choose the optimum material for your design.

  32. PDF icon The Effects of Arcing-Issue 41-May 2012

    Explore the damaging effects of electrical arcing, and what you can do to minimize any potential damage.

  33. PDF icon Introduction to Arcing Contacts-Issue 40-April 2012

    Familiarize yourself with the different types of electrical arcing in separable contacts, and where, when and why they occur.

  34. PDF icon Silver As A Contact Material-Issue 39-March 2012

    Read about the advantages of silver for contact materials, particularly in higher voltage separable contacts.

  35. PDF icon The Platinum Group Metals As Contact Materials-Issue 38-February 2012

    Find out where platinum, palladium, and other similar metals are used for electrical contact surfaces, and what to watch out for when you do use them.

  36. PDF icon Gold As A Contact Material-Issue 37-January 2012

    Explore the advantages of gold and what makes it an ideal material for electrical contacts, when cost constraints allow it.