What is bend allowance?

Master the Aerospace Materials, Processes and Hardware Test. Practice with questions and answers, flashcards, and explanations. Prepare thoroughly for your certification exam!

Bend allowance refers to the measure of material that is required to compensate for the distortion of the material when it is bent. When a piece of sheet metal is formed into a bend, the inner radius of the bend will shorten, while the outer radius will stretch. This creates a need for additional length in the material to ensure that the final dimension after forming is correct. The bend allowance quantifies this necessary length of material that needs to be added to the flat layout before the bending process occurs.

Understanding this concept is crucial in design and manufacturing to ensure that components fit together correctly and maintain the intended functionality after bending operations. The correct application of bend allowance also improves material efficiency and reduces waste during fabrication processes.

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