1、Designation:E19014Standard Test Method forGuided Bend Test for Ductility of Welds1This standard is issued under the fixed designation E190;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parenthe
2、ses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope1.1 This test method covers a guided bend test for thedetermination of sound
3、ness and ductility of welds in ferrousand nonferrous products.Flaws,not shown by X rays,mayappear in the surface of a specimen when it is subjected toprogressive localized overstressing.This guided bend test hasbeen developed primarily for plates and is not intended to besubstituted for other method
4、s of bend testing.1.2 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.3 This standard does not purport to address all of thesafety conce
5、rns,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.Referenced Documents2.1 ASTM Standards:2E6 Terminology Relating to Methods of Mechan
6、ical Testing2.2 AWS Standard:AWSA3.0M/A3.0 Standard Welding Terms and Definitions;Including Terms for Adhesive Bonding,Brazing,Soldering,Thermal Cutting,and Thermal Spraying33.Terminology3.1 Terms in this standard are defined in E6 TerminologyRelating to Methods of Mechanical Testing.3.2 Additionalw
7、eldingtermsincludingdefect,discontinuity,flaw,thermal cutting,weld root,weld face,andweldment are defined in AWS A3.0M/A3.0:2010.4.Summary of Test Method4.1 The specimen is bent in a U-shaped die by means of acentrally applied force to the weldment in a flat specimensupported at two positions equidi
8、stant from the line of forceapplication.The specimen is forced into the die by a plungerhaving the shape necessary to produce the desired contour.Theconvex surface of the bent specimen is examined for cracks orother open flaws.5.Significance and Use5.1 The guided bend test as described in this test
9、method isused to evaluate the quality of welds as a function of ductilityas evidenced by their ability to resist cracking during bending.6.Apparatus6.1 The guided bend test jig is shown in Fig.1.7.Sampling7.1 Sample accord with the requirements of relevant speci-fications and codes.8.Test Specimens8
10、.1 The types of specimens generally used for guided bendtesting are rectangular ones machined from plates and pipes.The weld-face surface of the flat specimen contains the greaterwidth of the weld material,while the opposite side is called theweld-root surface.8.1.1 Transverse Side BendThe weld is t
11、ransverse to thelongitudinal axis of the specimen,which is bent so that eitherone of the side surfaces becomes the convex surface of the bentspecimen(Fig.2 and Fig.3).8.1.2 Transverse Face BendThe weld is transverse to thelongitudinal axis of the specimen,which is bent so that theweld-face surface b
12、ecomes the convex surface of the bentspecimen(Fig.4).8.1.3 Transverse Root BendThe weld is transverse to thelongitudinal axis of the specimen,which is bent so that theweld-root surface becomes the convex surface of the bentspecimen(Fig.4).1This test method is under the jurisdiction of ASTM Committee
13、 E28 onMechanical Testing and is the direct responsibility of Subcommittee E28.02 onDuctility and Formability.Current edition approved May 1,2014.Published September 2014.Originallyapproved in 1961.Last previous edition approved in 2008 as E190 92(2008).DOI:10.1520/E0190-14.2For referenced ASTM stan
14、dards,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.3Available from American Welding Society(AWS),8669 NW 36 Street,#130,Miami,FL 33166-6672,ht
15、tp:/www.aws.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 8.1.4 Longitudinal Face BendThe weld is parallel to thelongitudinal axis of the specimen,which is bent so that theweld-face surface becomes the convex surface of the bentspec
16、imen(Fig.5).8.1.5 Longitudinal Root BendThe weld is parallel to thelongitudinal axis of the specimen,which is bent so that theweld-root surface becomes the convex surface of the bentspecimen(Fig.5).Thickness of Specimenin.(mm)A,in.(mm)B,in.(mm)C,in.(mm)D,in.(mm)38(9.5)112(38)34(19)238(60)1316(30)18(3.2)218(54)1116(27)238(60)1316(30)t4t2t6t+18(+3.2)3t+116(+1.6)NOTE1Either hardened and greased shoulders or hardened rollers free to rotate shall be used.NOTE2The shoulders or rollers shall have a min
