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Ultrasonic impact treatment services

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Ultrasonic impact treatment services

With more than 20 years of experience in ultrasonic surface impact treatments for the improvement of fatigue performance, SONATS proposes weld impact treatment services for your welded structures. Thanks to the simplicity of our portable equipment, SONATS can send a team of technicians to your site within one to three weeks whether it be in France or around the world.

SONATS performs preventive treatment where fatigue cracks have initiated or curative treatment where there is propagation of cracks.

SONATS is also open to partnerships with companies wishing to offer such services using our portable ultrasonic weld impact treatment system, the NOMAD.

50 - EN - White Paper - Ultrasonic Needle Peening - SONATS

Download our white paper on ultrasonic needle peening

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Examples of ultrasonic impact treatment services (HFMI-UIT) on customer sites

PREVENTIVE TREATMENT FOLLOWING THE DISCOVERY OF FATIGUE CRACK INITIATION

Following a study commissioned by the port authority of DOVER, the consulting firm warned about crack initiation.

After analysis, it was decided to apply a high-frequency mechanical impact treatment (HFMI-UIT) on all critical areas of each bridge to avoid the spread of cracks (about 4km of weld toe). Two devices were rented for 1 month, for use 7 days a week and 10 hours a day.

This solution was used to extend the fatigue lifetime by at least two times that of the initial life cycle before HFMI.

Ultrasonic impact treatment subcontract – Preventive treatment – SONATS
Ultrasonic impact treatment services (UIT) – Preventive treatment of bridge - SONATS

PEENING OF ROAD INFRASTRUCTURES

Cracks on the weld toe of the upper deck of the George Washington Bridge (NY) were observed.

A preventive and curative treatment was then applied by the American Bridge team over a period of one year using 4 devices.

The cracking preventive treatment on the weld bead of the zones concerned made it possible to extend the fatigue lifetime of the bridge.

TREATMENT OF CIRCUMFERENTIAL WELDING ON A HEAVY PLANT FRONT LOADER

To increase the fatigue lifetime of a circumferential weld of a front loader lift arm, SONATS technicians, equipped with two NOMAD devices, went to the customer site to apply a preventive treatment on all welds.

This treatment made it possible to increase the number of lifting cycles from 200,000 to 5 billion

Ultrasonic impact treatment services (UIT) – Earth moving equipment welding - SONATS
Ultrasonic impact treatment services (UIT) – War vessel (US Navy) - SONATS

TREATMENT OF AN ALUMINUM SUPER STRUCTURE OF A WAR VESSEL

Several categories of US Navy vessels were built with a 5XXX series aluminium chosen for its mechanical properties (AA5456 and AA5083).

However, high temperatures and the saline environment sensitise the surface and cause cracking due to stress corrosion.

SONATS technicians, equipped with our portable NOMAD system, intervened on several vessels to apply an impact treatment to weld toes in critical areas.  The ultrasonic impact treatment process is approved by the US Navy.

Scientific and technical publications

Read technical and scientific publications discussing about ultrasonic weld impact treatment such as our white paper (Fatigue life improvement of welded structures by ultrasonic needle peening) gathering SONATS’ experiences.

Access to all our download resources

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