TY JOUR TI CONTROL AND MONITORING OF FUSION WELDING BY WAY OF EXAMPLE OF MANUFACTURING AIRCRAFT AIR CONDITIONING SYSTEMS ELEMENTS KW welding KW monitoring KW modeling KW management KW automation KW optimization KW discipline KW qualification KW certification KW personnel JO Bulletin of Bryansk state technical university AU Merkulov, V.I. AU Lazarev, S.A. PY 2021 IS 2021 PB Bryansk State Technical University