1 / 13

Lecture # 5 and 6

Lecture # 5 and 6. Mechanicial Properties of Materials. Objectives:. 1): Relating Stress to Strain using experimental method. 2): Plotting Stress verses Strain (Stress – Strain diagram) 3): Extracting mechanical properties from  – diagram. The Tension and Compression Test.

mele
Download Presentation

Lecture # 5 and 6

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Lecture # 5 and 6 Mechanicial Properties of Materials Objectives: 1): Relating Stress to Strain using experimental method. 2): Plotting Stress verses Strain (Stress – Strain diagram) 3): Extracting mechanical properties from – diagram.

  2. The Tension and Compression Test Typical steel specimen with attached strain gauge. Electrical-resistance Strain gauge.

  3. The Stress – Strain Diagram Conventional and true stress-strain diagrams for ductile material (steel) (not to scale).

  4. True Stress – Strain Diagram Stress-Strain diagram for mild steel

  5. Percent elongation = Percent reduction of area = Stress – Strain Behavior of Ductile and Brittle Materials

  6.  (mm/mm) Hooke’s Law

  7. Typical Stress-Strain curve showing modulus of resilience, MR. Typical Stress-Strain diagram showing modulus of toughness, MT.

  8. Poission’s ratio. • Lateral contraction for a bar in tension with • Cross-sectional dimensions.

  9. Deflection Due to Axial Loading • Undeformed bar and • Bar subject to axial force showing deformation. (in.) or (mm.)

  10. Deflection Due to Axial Loading Bar with intermediate axial loads. Bar with changes in cross section and intermediate loads. (in.) or (mm.)

  11. Deflection Due to Axial Loading • Bar with variable cross sectional area and • Bar subjected to loading that varies with x. (in.) or (mm.)

  12. Elastic Strain verses Plastic Strain Strain Hardening

  13. Thankyou

More Related