2.2 - Forces and Stresses Flashcards
What are some different forms of forces and stresses a material can undergo?
- Compression
- Tension
- Bending
- Torsion
- Shear
What happens to a material during compression?
Compression occurs when a pushing force is applied to either end of a material.
What happens to a material during tension?
Tension occurs when a pulling force is applied to either end of a material.
What happens to a material when it is bent?
- Bending involves both tension and compression forces.
- Tension on one side with compression on the other.
What happens to a material during torsion?
Torsion forces occur when a material is twisted.
What happens to a material during shear?
Shear force acts on an object in a direction perpendicular to its length.
How can materials be enhanced to improve their functionality when they interact with forces and stresses?
- Reinforced - strengthened by the addition of other materials.
- Strengthened - made stronger or more rigid to resist certain forces.
- Made more flexible.
How does bending a material improve its resistance to forces?
Adding curves, arches and tubes can add considerable strength to products, using a minimum amount of material.
How does folding a material improve its resistance to forces?
This can add strength, but also flexibility by enabling a material to bend easily.
How does fabric interfacing improve a textile’s resistance to forces?
This adds an additional layer to give structure, shape and support.
How does laminating a material improve its resistance to forces?
- By bonding two or more materials together, a product’s strength and stability are improved.
- It can also add to the aesthetics by giving a new finish.
What is webbing and how does it improve a material’s resistance to forces?
- A strong fabric made from high-strength material.
- It is usually woven into flat strips and used for items under high tension, such as seat belts.
