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Phased Array Ultrasonic Testing (PAUT) is an advanced NDT method in which a multi-element ultrasonic probe generates an electronically steered beam at multiple angles in a single scan, enabling a full volumetric assessment of welds, castings and structural components.

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badania PAUT

At Ultrarent we use modern PAUT flaw detectors together with a full range of multi-element probes, which allow classic UT and RT methods to be replaced in many applications where high accuracy, complete data recording and fast on-site analysis are required. Compared with traditional UT testing we scan up to 10x faster, while covering the entire weld volume and maintaining high inspection sensitivity, which minimises downtime and the risk of an incorrect assessment. Testing is carried out in accordance with EN ISO 13588 and EN ISO 19285, by inspectors certified to EN ISO 9712, level 2 and 3.

In practice this means:

precise detection and sizing of internal discontinuities with complex shapes, such as: cracks, lack of fusion, lack of penetration,
the highest imaging resolution available among ultrasonic techniques, thanks to focusing at every point of the image,
permanent storage of the Full Matrix Capture (FMC) data set, which allows repeated, retrospective analysis of the result without the need to repeat the test,
an image comparable in detail to radiography, without the need for harmful ionising radiation,
a single probe pass provides full volumetric coverage of the tested component with data recording for further analysis,
a single scanner pass replaces multiple angle changes in conventional UT – full volumetric inspection of welds and the HAZ with data recording,
greater efficiency – up to 10x faster compared with UT testing
badania PAUT

PAUT testing is extremely versatile and often replaces RT/UT, but it requires good access to the surface, proper preparation and qualified personnel for calibration and data interpretation. At Ultrarent we advise on the optimal use of PAUT as part of a comprehensive NDT strategy – supplementing it with other methods when surface defects or specific geometries are critical

ULTRARENT Sp. z o.o. is a professional non-destructive testing (NDT) laboratory that provides testing and inspection services across the entire country — from Pomerania to the Subcarpathian region, and from Lower Silesia to Podlasie. Thanks to our wide operating reach and qualified team of specialists, we offer comprehensive service for both medium and large enterprises, as well as smaller industrial plants — in every voivodeship of Poland

List of voivodeships we serve:

Lower Silesian Kuyavian-Pomeranian Lesser Poland Masovian Opole Subcarpathian Podlaskie Pomeranian Łódź Lubusz Silesian Świętokrzyskie Greater Poland Kuyavian-Pomeranian Warmian-Masurian West Pomeranian

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PAUT testing is extremely versatile and often replaces RT/UT, but it requires good access to the surface, proper preparation and qualified personnel for calibration and data interpretation. At Ultrarent we advise on the optimal use of PAUT as part of a comprehensive NDT strategy – supplementing it with other methods when surface defects or specific geometries are critical

badania radiograficzne

Digital radiography in NDT covers the DR and CR techniques, in which X-ray or gamma radiation passes through the tested component and its internal structure is recorded digitally by a detector or imaging plate, instead of on classic film.

Replace PAUT testing with volumetric methods:

Radiographic testing (RT) is an NDT method in which X-ray or gamma radiation passes through the tested component and creates an image of its internal structure.​

This makes it possible to quickly and reliably detect typical material discontinuities in castings and welded joints, such as cracks, gas pores, inclusions, voids or lack of penetration.

Ultrasonic testing (UT) is an NDT method in which an ultrasonic wave is introduced into the tested component via a probe, and the reflected signals are analysed in order to detect internal and surface discontinuities.

TOFD ultrasonic testing (Time of Flight Diffraction) is a highly precise, volumetric NDT technique used to detect and measure discontinuities in welded joints and steel components. The TOFD technique uses the diffraction of ultrasonic waves at the edges of discontinuities, enabling their detection and precise sizing.

Complementary methods (surface)

Penetrant testing (PT) is an NDT method used to detect discontinuities open to the surface, based on the capillary penetration of a penetrant into cracks.

Magnetic particle testing (MT) is a non-destructive testing method used to detect surface and near-surface discontinuities in ferromagnetic materials such as carbon and low-alloy steels.

PAUT uses a multi-element probe in which pulses are triggered with controlled delays, creating a beam that is electronically steered at multiple angles in a single scan – producing sector, C-scan or B-scan images instead of single A-scans. The method provides a more complete picture of weld condition and eliminates the need for ionizing radiation, which significantly simplifies work organization.

PAUT excellently reveals cracks, lack of penetration, lack of fusion, slag inclusions and porosity, thanks to multi-angle inspection and advanced visualization. The method is especially effective for thick-walled welds and complex geometries, where conventional UT would require multiple probes with different beam angles.

In many cases, yes – especially when equipment cannot be taken out of service, protection zones cannot be established, or an immediate result is required. Choosing PAUT as an alternative to RT depends on the type of component being inspected and the acceptance criteria. In many cases, Phased Array testing is far more efficient than radiography.

PAUT is significantly faster – a single scanner pass covers a range of angles (typically 40°–75°), eliminating the need for multiple probes at different angles compared with standard ultrasonic testing.

Yes, the surface must be smooth and clean to ensure good acoustic coupling. The method is sensitive to roughness, coatings or deposits that can interfere with wave transmission. Preparation is similar to conventional UT and requires grinding the surface to be tested.

PAUT, however, does not require the designation of special zones or the use of protective barriers, which makes it easier to carry out inspections alongside the work of welding personnel.

Yes, modern PAUT systems allow effective inspection of both thick- and thin-walled components – down to just a few millimetres of wall thickness. By adjusting the beam parameters, settings can be selected that provide high resolution and reliable results even for delicate pipe or sheet structures.

Results are recorded as digital scan data, which can be analysed, archived and replayed at any time.

 

The report includes interpretation of the results and documentation enabling integration with the quality system, inspection plans, etc.

 

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TFM

Ultrasonic Testing Total Focusing Method (TFM)

CR/DR

Digital radiography (DR)

VT

Visual testing (VT)

MT

Magnetic particle testing (MT)

RT

Radiographic testing (RT)

See all

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  • Testing laboratory recognized by UDT — testing conducted in accordance with quality requirements for regulated equipment and critical processes
  • Less downtime and continuous operation — early detection reduces the risk of failure and costly shutdowns
  • Fast readiness and short turnaround times — efficient logistics, priority scheduling, express test results
  • Classic and advanced NDT inspection techniques performed by a team of specialists with years of experience
  • ISO 9712 Level 3 in all five principal NDT methods — VT, PT, MT, RT and UT. We write and approve the inspection procedure, not only perform the test.