The use of stress-relieving by ball-pein hammering during track welding (RR-STR-96-017)

BR Research have carried out an investigation into the effectiveness of peening of weld repairs for London Underground Ltd (LUL). A manual metal arc welded specimen was produced following the procedures laid down in the LUL document TE-MTS-0804-A1. Half of the weld repair was peened using a ball pein hammer...