Cutting
From Wikipedia, the free encyclopedia
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For other uses, see Cutting (disambiguation).
Cutting is the separation of a physical object, or a portion of a physical object, into two portions, through the application of an acutely directed force. An implement commonly used for cutting is the knife or in medical cases the scalpel. However, any sufficiently sharp object is capable of cutting if it has a hardness sufficiently larger than the object being cut, and if it is applied with sufficient force. Cutting also describes the action of a saw which removes material in the process of cutting.
Cutting is a compressive and shearing phenomenon, and occurs only when the total stress generated by the cutting implement exceeds the ultimate strength of the material of the object being cut. The simplest applicable equation is stress = force/area: The stress generated by a cutting implement is directly proportional to the force with which it is applied, and inversely proportional to the area of contact. Hence, the smaller the area (i.e., the sharper the cutting implement), the less force is needed to cut something.
[edit] Cutting tools
- Axe
- Drill bit
- Diamond tools
- Front teeth
- Knife
- Machete
- Diamond Blade
- Milling cutter
- Razor blade
- Saw
- Chainsaw
- Scalpel
- Scissors
- Tool bits, turning tools for lathes
- Blade
- Fingernails
- Paper (paper cuts)
- Switchblade
- Water jet cutter
[edit] External links
- Tony Atkins. "Optimum blade configurations for the cutting of soft solids"