This document discusses bending tests which are used to determine a material's strength and elastic properties by applying forces to its surface. The bending test uses a universal testing machine to apply forces to a test specimen in three or four-point bending configurations to induce internal stresses. The test results are used to evaluate a material's strength, ductility and failure modes under bending forces.

1. Engineering Tests
Lecture No. (3)
Faculty of Engineering
Prod. & Mech. Design Engineering Department
Dr. Rania Mostafa
Bending Test

2. Outline
• Bending test
• test purpose
• Applications
• Limitations
• test specimen
• Test procedures
• Types of fractures

4. Electromechanical Universal testing machine
 Consists of frame , engine, gear, screws , crosshead , grips (gripping jaws) ,
extensometer , specimen, hardware and software control
Capacities for range from low-load forces of 2kN (448 lbf) up to high-capacity 1000 kN (225,000 lbf) test frames.

5. Bending test
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6. Bending test
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7. Bending test
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8. Bending test Layout

11. Compression test purpose

12. Applications

13. Compression test Limitations

14. Tests Specimen (Concrete)

16. Compression Test Procedure

17. Break and fracture