ASTM E164-2019 pdf free download

ASTM E164-2019 pdf free download.Standard Practice for Contact Ultrasonic Testing of Weldments
1. Scope
1.1 This practice covers techniques for the ultrasonicA-scan examination of specific weld configurations joining wrought ferrous or aluminum alloy materials to detect weld disconti- nuities (see Note 1). The reflection method using pulsed waves is specified. Manual techniques are described employing con- tact ofthe search unit through a couplant film or water column. 1.2 This practice utilizes angle beams or straight beams, or both, depending upon the specific weld configurations. Prac- tices for special geometries such as fillet welds and spot welds are not included. The practice is intended to be used on thicknesses of 0.250 to 8 in. (6.4 to 203 mm). N OTE 1—This practice is based on experience with ferrous and aluminum alloys. Other metallic materials can be examined using this practice provided reference standards can be developed that demonstrate that the particular material and weld can be successfully penetrated by an ultrasonic beam. N OTE 2—For additional pertinent information see Practice E317, Terminology E1316, and Practice E587. 1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appro- priate safety, health, and environmental practices and deter- mine the applicability ofregulatory limitations prior to use. 1.5 This international standard was developed in accor- dance with internationally recognized principles on standard- ization established in the Decision on Principles for the Development of International Standards, Guides and Recom- mendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
3. Significance and Use
3.1 The techniques for ultrasonic examination of welds described in this practice are intended to provide a means of weld examination for both internal and surface discontinuities within the weld and the heat-affected zone. The practice is limited to the examination of specific weld geometries in wrought or forged material.3.2 The techniques provide a practical method of weld examination for internal and surface discontinuities and are well suited to the task of in-process quality control. The practice is especially suited to the detection of discontinuities that present planar surfaces perpendicular to the sound beam. Other nondestructive examinations may be used when porosity and slag inclusions must be critically evaluated. 3.3 When ultrasonic examination is used as a basis of acceptance of welds, there should be agreement between the manufacturer and the purchaser as to the specific reference standards and limits to be used. Examples of reference stan- dards are given in Section 7. A detailed procedure for weld examination describing allowable discontinuity limits should be written and agreed upon.
4. Basis of Application
4.1 The following items are subject to contractual agree- ment between the parties using or referencing this standard. 4.1.1 Personnel Qualification—If specified in the contrac- tual agreement, personnel performing examinations to this standard shall be qualified in accordance with a nationally or internationally recognized NDT personnel qualification prac- tice or standard such as ANSI/ASNT CP-189, SNT-TC-1A, ISO 9712, NAS-410, or a similar document and certified by the employer or certifying agency, as applicable. The practice or standard used and its applicable revision shall be identified in the contractual agreement between the using parties. 4.1.2 Qualification ofNondestructive Agencies—Ifspecified in the contractual agreement, NDT agencies shall be qualified and evaluated as described in Specification E543. The appli- cable edition of Specification E543 shall be specified in the contractual agreement. 4.1.3 Procedures and Techniques—The procedures and techniques to be utilized shall be as specified in the contractual agreement. 4.1.4 Surface Preparation—The pre-examination surface preparation criteria shall be in accordance with 8.1.2 unless otherwise specified. 4.1.5 Timing of Examination—The timing of examination shall be after weld completion and surface preparation and when the surface temperature has reached ambient temperature unless otherwise specified. 4.1.6 Extent of Examination—The extent of examination shall be in accordance with Table 1 unless otherwise specified.