AWS D17.1-D17.1M:2017 pdf download.Specification for Fusion Welding for Aerospace Applications
4. Design of Welded Connections
4.1 Scope. The Engineering Authority shall design the weldment and define the requirerments to ensure compliance with all mission and systems requirements. The engineering documentation shall clearly define special requirements, such as fracture critical, or safety critical, imposed over and above the general requirements. Further, the Engineering Authority shall define process controls and substantiate that all design requirements can be met by welds produced in accordance with specified procedure, fabrication, and inspection requirements. Annex A contains further guidance on the weld joint design and analysis.
4.2 Weldment Design Data. The Engineering Authority shall develop or obtain appropriate material property data to support the weldment design. In addition, the weldment design shall either account for the residual stresses resulting from the welding process or the Engineering Authority shall provide an appropriate method for controlling/minimizing those residual stresses, such as annealing or aging after welding.
4.3 General Drawing Requirements
4.3.1 Drawing Information. Essential information for all welds shall be completely described on the engineering drawing or in referenced supporting documentation. When necessary, the engineering drawing shall show the profile (cross section) of a complex weld joint with sufficient detail for the fabricator to determine essential features at any position along the length of the weld.
4.3.2 Groove Welds. All groove welds, including those in flanged butt and corner joints, shall be full penetration (complete joint penetration) unless otherwise specified on the engineering drawing or in the referenced supporting documentation.
4.3.3 Fillet Welds. Fillet weld size shall be specified on the engineering drawing. Unless otherwise indicated, the specified size is a minimum with the default maximum size listed in Table 7.1. Fillet weld root penetration shall not be included in weld strength calculations unless a combination groove and fillet weld is specified for the joint.
4.3.5 Inspection Requirements. The engineering drawings shall define weld inspection requirements. Clause 7 specifies default inspection requirements based on classification, which may be modified as appropriate. Those requirements may be modified as appropriate. A single weld may utilize more than one set of inspection requirements through the use of separate zones applied to the weld.
5.1 General. This clause establishes the requirements for welding procedure specification data (WPS), welding procedure qualification, and welder/welding operator/tack welder performance qualification. It also contains provisions for maintenance of welder/welding operator/tack welder qualification.AWS D17.1-D17.1M pdf download.