STM_52910-17.pdf

ISO/ASTM 52910:2017(E)Standard Guidelines forDesign for Additive Manufacturing1This standard is issued under the fixed designation ISO/ASTM 52910;the number immediately following the designation indicates theyear of original adoption or,in the case of revision,the year of last revision.1.Scope1.1 This document gives guidelines and best practices forusing additive manufacturing(AM)in product design.1.2 It is applicable during the design of all types of products,devices,systems,components,or parts that are fabricated byany type of AM system.These guidelines help determinewhich design considerations can be utilized in a design projector that can be utilized to take advantage of the capabilities ofan AM process.1.3 General guidance and identification of issues aresupported,but specific design solutions and process-specific ormaterial-specific data are not supported.The intended audiencecomprises three types of users:1.3.1 designers who are designing products to be fabricatedin an AM system and their managers,1.3.2 students who are learning mechanical design andcomputer-aided design,1.3.3 developers of AM design guidelines and design guid-ance systems.1.4 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.5 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Normative references2.1 There are no normative references in this document.2,33.TerminologyAdditive manufacturing processes3.1 Definitions:For the purposes of this document,theterms and definitions given in ASTM F2792-10,for definitionsof AM processes and concepts,and ASTM F2921-11,forcoordinate systems and test methodologies,and the followingapply.43.1.1 binder jettingAM process in which a liquid bondingagent is selectively deposited to join powder materials.3.1.2 directed energy depositionAM process in whichfocused thermal energy is used to fuse materials by melting asthey are being deposited.3.1.3 material extrusionAM process in which material isselectively dispensed through a nozzle or orifice.3.1.4 material jettingAM process in which droplets ofbuild material are selectively deposited.3.1.5 powder bed fusionAM process in which thermalenergy selectively fuses regions of a powder bed.3.1.6 sheet laminationAM process in which sheets ofmaterial are bonded to form an object.3.1.7 vat photopolymerizationAM process in which liquidphotopolymer in a vat is selectively cured by light-activatedpolymerization.3.2 Other definitions:3.2.1 design considerationtopic that may influence deci-sions made by a part designer.3.2.1.1 DiscussionThe designer determines to what extentthe topic may affect the part being designed and takes appro-priate action.3.2.2 process chainsequence of manufacturing processesthat is necessary for the part to achieve all of its desiredproperties.4.Summary of purpose4.1 This document provides guidelines for designing partsand products to be produced by AM processes.Conditions ofthe part or product that favor AM are highlighted.Similarly,1This test method is under the jurisdiction ofASTM Committee F42 on AdditiveManufacturing Technologies and is the direct responsibility of SubcommitteeF42.04 on Design.Current edition approved Jan.8,2017.Published March 2017.DOI:10.1520/ISO_ASTM59210-17.2None of the referenced documents are cited as requirements of the document.3For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.4ISO and IEC maintain terminological databases for use in standardization at thefollowing addresses:IEC Electropedia:available at http:/www.electropedia.org/,and ISO Online browsing platform:available at http:/www.iso.org/obp.ISO/ASTM International 2017 All rights reservedThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 conditions that favor conventional manufacturing processes arealso highlighted.The main elements include the following:4.1.1 the opportunities and design freedoms that AM offersdesigners(Clause 5).4.1.2 the issues that designers should consider when design-ing parts for AM,which comprises the main content of theseguidelines(Clause 6),and4.1.3 warnings to designers,or“red flag”issues,thatindicate situations that often lead to problems in many AMsystems(Clause 7).4.2 The overall strategy of design for AM is illustrated inFig.1.It is a representative process for designing mechanicalparts for s