In structural metal repairs, what is critical for a successful bend?

The angle of bend is fundamental in ensuring a successful bend during structural metal repairs because it directly influences the ability of the metal to deform properly without compromising its integrity. When metal is bent, how sharply or gradually it’s bent determines the amount of stress experienced at the grain structure of the metal. A proper angle ensures that the metal can withstand the bending process without cracking or failing.

In addition, different metals and thicknesses will have specific bend radii and angles that suit their properties, and exceeding these specifications can lead to fractures or weak points in the structure. Understanding the appropriate angle for a specific material helps ensure that the repair will maintain the intended strength and functionality of the aircraft structure.

While factors such as adequate support, clearance, and tension applied can affect the bending process, they are secondary to the importance of the angle of bend itself. If the angle is not correct, no amount of support or proper tension will yield a reliable bend—making the precise angle crucial for achieving a successful repair.