'Fatigue limit' diaporamas de présentation

University of Waterloo Department of Mechanical Engineering ME 322 - Mechanical Design 1

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How holes affect your parts

How holes affect your parts. By Justin Swick. Flow of Stress. Stress is just a force applied to an area. It flows like water in a river and it is advantageous for us to make it flow smoothly to avoid concentrations of it. Stress Concentrations.

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3.5 STRAIN ENERGY

? F = ? ? A = ? ( ? x ? y ). 3.5 STRAIN ENERGY. When material is deformed by external loading, energy is stored internally throughout its volume Internal energy is also referred to as strain energy Stress develops a force, . ? ? 2. ? U ? V. u =. =. ? 2 2 E. ? ?. ? 2. ( ).

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BIOMATERIALS sensu stricto

BIOMATERIALS sensu stricto. Titanium and titanium based alloys bioceramics: Alumina, Zirconia Carbon Hydroxyapatite glasses (vetroceramics, bioglasses). Titanium and Titanium-based alloys. Titanium : a light (AW 47,9), non-magnetic metal.

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CTU in Prague, Faculty of Mechanical Engineering

CTU in Prague, Faculty of Mechanical Engineering. DAF. Page 1. Concentration factors. Shape Factor or Stress Concentration Factor of an Elastic Stress Relative Stress Gradient. R 4. ? 2. ? 111. ? 15. 10. 20. CTU in Prague, Faculty of Mechanical Engineering. DAF. Page 2.

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530.352 Materials Selection

530.352 Materials Selection. Lecture #23 Fatigue Tuesday November 8 th , 2005. Failure even at low Stresses. Failure often occurs even when: ? applied < ? fracture and ? applied < ? yielding 90% of all mechanical failures are related to dynamic loading.

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FATIGUE

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FATIGUE

FATIGUE. Salient Features & Overview Points.

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