{"id":363914,"date":"2024-10-20T01:48:06","date_gmt":"2024-10-20T01:48:06","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-iso-238642021\/"},"modified":"2024-10-26T02:50:37","modified_gmt":"2024-10-26T02:50:37","slug":"bs-iso-238642021","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-iso-238642021\/","title":{"rendered":"BS ISO 23864:2021"},"content":{"rendered":"

This document specifies the application of the TFM technique and related technologies for semi- or fully automated ultrasonic testing of fusion- welded joints in metallic materials of minimum thickness 3,2 mm.<\/p>\n

\n
\n NOTE\n <\/div>\n

Unless stated otherwise, in this document \u2018TFM\u201d and \u2018TFM technique\u201d refer to the TFM technique as defined in ISO 23243<\/span><\/span> , and to all related technologies, see for example ISO 23865<\/span><\/span> and ISO 23243<\/span><\/span> .<\/p>\n<\/div>\n

This document is applicable to components with welds fabricated using metals which have isotropic (constant properties in all directions) and homogeneous conditions. This includes welds in low carbon alloy steels and common aerospace grade aluminium and titanium alloys, provided they are homogeneous and isotropic.<\/p>\n

This document applies to full penetration welded joints of simple geometry in plates, pipes and vessels.<\/p>\n

This document specifies four testing levels (A, B, C, D), each corresponding to a different probability of detection of imperfections. Guidance on the selection of testing levels is provided. Coarse-grained metals and austenitic welds can be tested when the provisions of this document have been taken into account.<\/p>\n

This document gives provisions on the specific capabilities and limitations of the TFM technique for the detection, locating, sizing and characterization of discontinuities in fusion-welded joints. The TFM technique can be used as a stand-alone approach or in combination with other non-destructive testing (NDT) methods for manufacturing, in-service and post-repair tests.<\/p>\n

This document includes assessment of indications for acceptance purposes based on either amplitude (equivalent reflector size) and length or height and length.<\/p>\n

This document does not include acceptance levels for discontinuities.<\/p>\n

The following two typical testing techniques for welded joints are referred to in this document:<\/p>\n

    \n
  1. \n

    side scanning, where the probe(s) is (are) positioned adjacent to the weld cap, typically using wedges. Side scanning can be performed from one side or both sides of the weld;<\/p>\n<\/li>\n

  2. \n

    top scanning where the probe is positioned on top of weld cap with a flexible, conformable delay line or using immersion technique, or using contact technique after removing the weld cap.<\/p>\n<\/li>\n<\/ol>\n

    Semi-automated testing encompasses a controlled movement of one or more probes along a fixture (guidance strip, ruler, etc.), whereby the probe position is measured with a position sensor. The scan is performed manually.<\/p>\n

    In addition, fully automated testing includes mechanized propulsion.<\/p>\n

    PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
    PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
    2<\/td>\nundefined <\/td>\n<\/tr>\n
    7<\/td>\nForeword <\/td>\n<\/tr>\n
    9<\/td>\n1 Scope <\/td>\n<\/tr>\n
    10<\/td>\n2 Normative references
    3 Terms and definitions
    4 Testing levels <\/td>\n<\/tr>\n
    11<\/td>\n5 Information required before testing
    5.1 Items to be defined before procedure development <\/td>\n<\/tr>\n
    12<\/td>\n5.2 Specific information required by the operator before testing
    5.3 Written test procedure <\/td>\n<\/tr>\n
    13<\/td>\n6 Requirements for personnel and equipment
    6.1 Personnel qualifications
    6.2 Test equipment
    6.2.1 General
    6.2.2 Instrument <\/td>\n<\/tr>\n
    14<\/td>\n6.2.3 Probes
    6.2.4 Scanning mechanisms
    7 Preparation for testing
    7.1 Volume to be tested
    7.2 Imaging typical weld discontinuities
    7.2.1 Discontinuity orientation <\/td>\n<\/tr>\n
    15<\/td>\n7.2.2 Discontinuity location
    7.2.3 Suitable imaging paths for specific discontinuity types <\/td>\n<\/tr>\n
    18<\/td>\n7.3 Verification of test setup
    7.4 Scan increment setting
    7.5 Geometry considerations <\/td>\n<\/tr>\n
    19<\/td>\n7.6 Preparation of scanning surfaces
    7.7 Temperature
    7.8 Couplant
    8 Testing of parent material
    9 Range and sensitivity
    9.1 General <\/td>\n<\/tr>\n
    20<\/td>\n9.2 Range and sensitivity settings
    9.2.1 General
    9.2.2 Setting range and sensitivity on the test object itself
    9.2.3 Gain corrections
    9.3 Checking of the settings <\/td>\n<\/tr>\n
    21<\/td>\n10 Reference blocks and test blocks
    10.1 General
    10.2 Material
    10.3 Dimensions and shape
    10.4 Reference reflectors
    11 Equipment checks <\/td>\n<\/tr>\n
    22<\/td>\n12 Procedure verification
    13 Weld testing
    14 Data storage
    15 Interpretation and analysis of TFM images
    15.1 General <\/td>\n<\/tr>\n
    23<\/td>\n15.2 Assessing the quality of TFM images
    15.3 Identification of relevant indications
    15.4 Classification of relevant indications
    15.5 Determination of location and length of an indication
    15.5.1 Location
    15.5.2 Length
    15.6 Determination of amplitude or height of an indication
    15.6.1 General <\/td>\n<\/tr>\n
    24<\/td>\n15.6.2 Based on amplitude
    15.6.3 Based on height
    15.7 Evaluation against acceptance criteria
    16 Test report <\/td>\n<\/tr>\n
    26<\/td>\n17 Austenitic welds <\/td>\n<\/tr>\n
    27<\/td>\nAnnex A (informative) Typical reference blocks and reference reflectors <\/td>\n<\/tr>\n
    32<\/td>\nAnnex B (informative) TFM images of typical discontinuities <\/td>\n<\/tr>\n
    40<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

    Non\u2010destructive testing of welds. Ultrasonic testing. Use of automated total focusing technique (TFM) and related technologies<\/b><\/p>\n\n\n\n\n
    Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
    BSI<\/b><\/a><\/td>\n2021<\/td>\n42<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":363923,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[431,2641],"product_tag":[],"class_list":{"0":"post-363914","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-25-160-40","7":"product_cat-bsi","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/363914","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/363923"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=363914"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=363914"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=363914"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}