Experimental determination of spring back and thinning effect of aluminum sheet metal during L-bending operation.

Highlights: [•] The spring back and thinning effect during L-bending was determined on aluminum sheet. [•] Beyond a particular clearance, the above said effects are linearly increasing. [•] Below the critical clearance scratches will occur on the surface due to wear. [•] As the clearance reduces, the wear rate increases on the punching surface. [Copyright &y& Elsevier]