AWS D17.1 pdf free download
AWS D17.1 pdf free download.Fusion Welding for Aerospace Applications.
1.1.1 Flight Hardware. The fundamental premise of this specification is to provide general requirements for currently recognized aerospace fusion welding processes and materials. However, this specification provides for the application of new materials, new welding processes, or acceptance criteria for production welds differing from those defined in this specification. These new applications shall be documented by the proposer and approved by the Engineering Authority.
1.1.1.1 Aircraft, Rotorcraft, and Engines Subject to FAA Regulation. When applying welding in the design, construction and repair of aircraft, rotorcraft, or engines subject to FAA Regulation, the Engineering Authority must perform the appropriate design analyses and impose process control measures that will ensure compliance with the applicable requirements of the Code of Federal Regulations, Title 14.
1.1.2 Nonflight Hardware. Nonflight hardware, tooling, ground support equipment and related non- conventional aerospace facilities shall he designed and welded in accordance with the requirements of Section 8.
1.2 Classification. All welds produced in accordance with this specification shall be classified on the engineering drawings. Weld classifications shall be as follows:
Class A, Class B. or Class C. These classifications refer to the level of inspection required and to the acceptance criteria. Alternate acceptance criteria and inspection methods may be applied if specified on the engineering drawing. The Engineering Authority shall also determine the weld procedure qualification requirements (see Commentary).
1.2.1 Determining Classifications. The Engineering Authority must consider material and process aspects that affect mission or systems requirements. A weld joint may be zoned with multiple classifications.
1.2.2 Criteria. The Engineering Authority shall determine the weld procedure qualification requirements for
ot for Resale all classifications in accordance with Section 4. Should the Engineering Authority determine that alternate acceptance criteria are required for particular applications, weidment(s) or other circumstances, the criteria shall he specified on the engineering drawing.
1.3 Approval. All references to the need for approval shall be interpreted to mean approval by the Customer or the Engineering Authority. Hereinafter, the term “Engineering Authority” will be used and it is to be construed to mean the Customer or the Engineering Authority.
1.4 Mandatory Provisions and Authority. Nothing in this specification supersedes applicable laws and regulations unless a specific exemption has been obtained prior to the contract date or as a contract amendment.
1.4.1 Mandatory Provisions. Most provisions of this specification are mandatory when the use of this specification is invoked. Certain provisions are optional and apply only when specified in contractual documents for a specific project. Guidance information is indicated by the words “should” or “may.”
1.4.2 l)rawing Authority. When requirements in this specification conflict with those on the engineering drawing, the requirements on the drawing shall take precedence.
1.4.3 Specification Authority. In the event of a conflict between the text of this specification and the references cited herein, the text of this specification takes precedence.
1.5 Definitions. The weld terms used in this specification shall be interpreted in accordance with the definitions given in the latest edition of AWS A3.O, Standard Weld- big Terms and Definitions, supplemented by Annex III of this specification.
1.6 Welding Symbols. Welding symbols shall be those shown in the latest edition of AWS A2.4, Standard Svmbols for Welding, Brazing, and Nondestructii’e Exainina— lion. Special conditions shall be fully explained by added notes or details on the engineering drawing.
1.7 Safety Precautions. Safety precautions shall conform to the latest edition of ANSI Z49. Safety in Welding, Cutting, and Allied Processes, published by the American Welding Society. In addition, users of electron beam welding equipment should follow with the safety requirements given in the latest edition of AWS C7. 1, Recoin mended Practices for Electron Beani Weldiiig; users of laser beam welding equipment should follow with the safety requirements given in the latest edition of AWS C7.2, Recommended Practices for Laser Beam Welding, Cutting, and Drilling. See also Annex A.AWS D17.1 pdf download.
