Destructive Testing Methods Tensile Testing.pptx

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1. Destructive Testing Methods ( Tensile Testing) Dr. A. M. Takale Mechanical Engineering Department Sharad Institute of Technology College of Engineering.

2. Introduction Definition: Tensile testing is a mechanical test to determine a material's strength and ductility. Purpose: To measure the material's ability to resist a tensile load. Components: Tensile testing machine Specimen Extensometer

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4. Specimen Preparation Dimensions: Measure length and cross-sectional area. Surface Finish: Ensure a smooth surface to avoid stress concentration. Notches: If required, introduce notches to study fracture behavior.

5. Tensile Testing Procedure Mounting: Secure the specimen in the grips of the testing machine. Load Application: Gradually increase the load at a controlled rate. Data Collection: Record load and corresponding elongation.

6. Stress-Strain Curve Definition: A graphical representation of stress (load/area) vs. strain (change in length/original length). Regions: Elastic region: Material returns to its original shape when the load is removed. Yield point: The point where plastic deformation begins. Plastic region: Material deforms permanently. Ultimate tensile strength (UTS): Maximum stress before fracture. Necking: Localized reduction in cross-sectional area. Fracture: Complete separation of the material.

7. Ductility Definition: The ability of a material to deform plastically without fracturing. Measures: Percent elongation: (final length - original length) / original length * 100 Percent reduction in area: (original area - final area) / original area * 100

8. Modulus of Elasticity Definition: A measure of a material's stiffness. Calculation: Slope of the elastic portion of the stress-strain curve.

9. Applications of Tensile Testing Material Selection: Choosing appropriate materials for specific applications. Quality Control: Ensuring product consistency. Research and Development: Studying material behavior and developing new materials.

10. Conclusion Summary: Tensile testing is a crucial tool for understanding material properties. Importance: It provides valuable information for design, manufacturing, and research.

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