{"id":57405,"date":"2021-12-01T10:13:08","date_gmt":"2021-12-01T10:13:08","guid":{"rendered":"https:\/\/scisa.es\/ultrasonic-testing\/"},"modified":"2023-01-23T13:40:56","modified_gmt":"2023-01-23T13:40:56","slug":"ultrasonic-testing","status":"publish","type":"page","link":"https:\/\/scisa.es\/en\/non-destructive-and-laboratory-metallurgical-testing\/non-destructive-testing\/ultrasonic-testing\/","title":{"rendered":"Ultrasonic Testing"},"content":{"rendered":"

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WHAT IS ULTRASONIC INSPECTION?<\/h2>\n

Ultrasonic testing<\/strong> is a non-destructive testing<\/a> method based on the phenomenon of reflection of acoustic waves<\/strong> when they encounter discontinuities in their propagation. The wave will be reflected back to its source of generation if the discontinuity is in a normal position relative to the incident beam. At SCI<\/a> we have different techniques to carry out Ultrasonic testing<\/strong>:<\/p>\n

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CONVENTIONAL ULTRASOUND<\/h2>\n

Conventional ultrasonic testing<\/strong> equipment works on the principle of sending a pulsed beam of high-frequency ultrasound from a handheld transducer<\/strong> or probe<\/strong>, which is placed on the surface of the object to be tested.<\/p>\n

In manual inspection, the Inspector acts directly in the execution of the examination<\/strong>, that is, he is responsible for the correct application of the inspection procedures, both in the handling of the probes and in the interpretation of the data.[\/vc_column_text][vc_column_text]In most of its branches, SCI<\/strong> has bunkers<\/strong> for radiography. There is also the possibility of installing modular bunkers<\/strong> at the customer’s facilities.[\/vc_column_text][\/vc_column_inner][vc_column_inner width=”1\/2″ css=”.vc_custom_1643711683758{padding-right: 0px !important;}”][vc_single_image image=”56160″ img_size=”full” alignment=”right” qode_css_animation=”” css=”.vc_custom_1641396143104{margin-top: 0px !important;margin-right: 0px !important;margin-bottom: 0px !important;margin-left: 0px !important;border-top-width: 0px !important;border-right-width: 0px !important;border-bottom-width: 0px !important;border-left-width: 0px !important;padding-top: 0px !important;padding-right: 0px !important;padding-bottom: 0px !important;padding-left: 0px !important;}”][\/vc_column_inner][\/vc_row_inner][vc_row_inner row_type=”row” type=”full_width” text_align=”left” css_animation=”” css=”.vc_custom_1643711721869{margin-top: 32px !important;background-color: #ffffff !important;}”][vc_column_inner css=”.vc_custom_1639654835560{padding-right: 45px !important;padding-left: 45px !important;}”][vc_empty_space][vc_column_text]<\/p>\n

ADVANCED ULTRASOUND<\/h2>\n

SCI<\/strong> has been developing its own Automated Ultrasonic Inspection Equipment<\/strong> for more than a decade, based on conventional pulse-echo techniques, or on other more innovative techniques such as Phased Array<\/a> or TOFD<\/strong>.<\/p>\n

Automatic Ultrasonic Testing (AUT<\/strong>) with the pulse-echo method is performed by dividing the weld into zones and using a specific probe for each zone. This method involves using a probe for each zone, varying the number of probes according to the profile and thickness<\/strong> of the weld. The probes, mounted on a carriage, move circumferentially around the weld while maintaining a constant distance from the centerline of the weld.<\/p>\n

Currently, with the use of Phased Array<\/strong> technology, this type of inspection has experienced considerable progress, both in the method of work and in its execution.<\/p>\n

The Phased Array<\/strong> system is based on the use of probes with multiple crystals. By selecting a set of them and applying the appropriate delays, we can obtain different angles and focuses. In weld inspection<\/strong>, this means that where previously several probes were used, with this technique we use a single probe.[\/vc_column_text][vc_empty_space][\/vc_column_inner][\/vc_row_inner][vc_row_inner row_type=”row” type=”full_width” text_align=”left” css_animation=”” css=”.vc_custom_1643712262796{padding-right: 0px !important;padding-left: 0px !important;}”][vc_column_inner css=”.vc_custom_1643712305357{padding-right: 0px !important;padding-left: 0px !important;}”][vc_single_image image=”56374″ img_size=”full” qode_css_animation=””][\/vc_column_inner][\/vc_row_inner][vc_row_inner row_type=”row” type=”full_width” text_align=”left” css_animation=”” css=”.vc_custom_1643712401556{margin-top: 32px !important;background-color: #ffffff !important;}”][vc_column_inner css=”.vc_custom_1639654835560{padding-right: 45px !important;padding-left: 45px !important;}”][vc_empty_space][vc_column_text]<\/p>\n

AUTOMATIC ULTRASOUNDS PROVIDE SOME SIGNIFICANT ADVANTAGES SUCH AS:<\/h2>\n
    \n
  • <\/i> Minimize the time<\/strong> between the execution of the test and the results report, allowing immediate correction of systematic defects in the process and, consequently, reducing the number of repairs.<\/li>\n
  • <\/li>\n
  • <\/i> Not to use radioactive sources,<\/strong> being unnecessary, therefore, the delimitation of personnel exclusion zones and being able to carry out the test close to the welding front.<\/li>\n
  • <\/li>\n
  • <\/i> Increased ability to detect linear defects<\/strong> such as fusion faults.<\/li>\n
  • <\/li>\n
  • <\/i> Allow the localization of defects in depth<\/strong>, facilitating the repair process.<\/li>\n
  • <\/li>\n
  • <\/i> Enable the dimensioning of defects at height,<\/strong> so that alternative acceptance criteria, such as the Engineering Critical Assessment<\/em>, can be used.<\/li>\n<\/ul>\n

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