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10:54 PM , Tuesday 26th September 2017

NDT

NDT Performance






Our NDT inspectors are ready to provide you with a perfect NDT inspection performance acc. to international standards, e.g. ASTM, ASME or ISO specifications as well as your own procedures. Technical background of a regular NDT training centre even increases possibilities and allow using the most appropriate instrumentation for your application. We can choose the best alternatives, develop and apply an NDT procedure customised to the task. The NDT may be performed in the SSFAT laboratories or the inspector equipped with portable devices can do the duty on the site. SSFAT may be used as an NDT supplier, for the 3rd party inspections or as an independent auditor.

Traditional NDT methods cover the most popular techniques of:

VT – Visual method
o Direct Visual Testing
o Remote Visual Testing (endoscopes, borescopes)

PT – Liquid Penetrant
o line/bench for Flourescent Penetrant Inspection (FPI)
o cans (sprays), both Dye penetrant and Fluorescent techniques

MT – Magnetic Particle
o line/bench for Magnetic Particle Inspection (MPI)
o cans (sprays) and yokes for field applications

RT – Radiography
o traditional X-ray tube up to 250 keV
o linear accelerator up to 11 MeV

UT – Ultrasonic testing
o contact techniques for straight and angle probes
o immersion tank
o phased array
o time of flight diffraction (TOFD)

ET – Eddy Current method
o contact probes
o bobbin coil for heat exchangers tubing

AT – Acoustic Emission
o 8 channel analyser, expandable up to 32 channels
o magnetic case sensors

ST – Stress testing
o traditional resistance gages
o optical Bragg-Grid (FBG) sensors and instrumentation
o contact-less Electronic Spackle Pattern Interferometry (ESPI)
o multi-channel logger / analyser

TT – Thermal testing (thermography)
o Thermo-image analysers
o flash for heat excitation

OT – Optical testing (shearography)
o expanded laser beam interferentions



For a predictive maintenance (PdM), we offer also:

• Vibration analysis;
• Lubrication analysis

or systematic application of traditional methods. An operation life-time of your machine or aging structure may be extended by advanced application of Damage Tolerance approach.

Methods & Techniques



Each industrial sector can be considered. These methods are applicable at least at minimal range (welds are everywhere and bolts too). There are just specific features of tested objects, e.g. steel plates on pressure vessels vs. thin aluminium in aerospace, which lead to different instrument setting or a different probe. Of course, we need to respect a method or a technique features:

• VT – surface only, good lighting, strong human factor
• PT – defects open to surface, accessible areas only
• UT – smooth surface, suitable defect orientation, the first interface only
• ET – electrical conductivity is the must, near-to surface only (several mm of non-ferrous materials)
• MT – surface of ferromagnetic materials only

The method is chosen for satisfaction of particular customer application - demanded sensitivity, workplace condition, money available for investment (sophisticated equipment like UT or ET) or for operation (permanent supply of consumer goods like PT or MT).
General rule is about the application cost proportionate to results (sensitivity, reliability, time-saving).


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