Ch. 2 - Chapter02: PropertiesofMaterials&Testing...

Info iconThis preview shows pages 1–9. Sign up to view the full content.

View Full Document Right Arrow Icon
Chapter 02:  Properties of Materials & Testing
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
2.1 Introduction n Successful products begin with the appropriate materials q Materials rarely come in the right shape, size, and quantity for use q Parts and components are produced by subjecting engineering materials to one or more processes n Manufacturing requires knowledge in several areas Figure 2-1 The manufacturing relationships among structure, properties, processing, and performance.
Background image of page 2
Requirements for Design n Material requirements must be determined q Strength q Rigidity q Resistance to fracture q Ability to withstand vibrations or impacts q Weight q Electrical properties q Appearance q Ability to operate under temperature extremes q Corrosion resistance
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Physical and Mechanical Properties n Physical properties: q Density, melting point, optical properties, thermal properties, electrical properties, magnetic properties n Mechanical properties: q A property that dictates how a material responds to applied loads and forces q Determined through specified testing q It is important to take the testing methodology
Background image of page 4
Stress and Strain n Strain is the distortion or deformation of a material upon the application of a force or a load n Stress is the force or the load being transmitted through the material’s cross sectional area n Stress and strain can occur as tensile, compressive or shear Figure 2-2 Tension loading and the resultant elongation.
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Tension, Compression, Shear  Loading Figure 2-3 Examples of tension, compression, and shear loading, and their response.
Background image of page 6
2.2 Static Properties n Material response under the application of a constant load n Strength of a material is important q Elastic stretching or deflection of a material is related to Young’s Modulus n A number of tests have been developed to determine these static properties of materials
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Static Testing n Tensile test q Uniaxial test q Generates an engineering stress-strain curve n Compression test q Relevant for brittle materials, often used under compression Figure 2-5b Schematic of the load frame showing how upward motion of the darkened yoke
Background image of page 8
Image of page 9
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 25

Ch. 2 - Chapter02: PropertiesofMaterials&Testing...

This preview shows document pages 1 - 9. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online