Experimental investigation of the degree of weakening in structural notch area of 7075-T6 aluminum alloy sheet welded with the RFSSW methodAndrzej Kubit, Magdalena Bucior, Dawid Wydrzyński and Łukasz BąkITM Web Conf., 15 (2017) 04006DOI: https://doi.org/10.1051/itmconf/20171504006