NON DESTRUCTIVE TESTING
We have extensive experience in the development of non-destructive tests or trials, offering quality and safety at work.
Specialized personnel with more than 18 years of experience.
Handling of traditional techniques in combination with intelligent systems.
Analysis based on national and international standards and practices.
Standardized inspection equipment.
Evaluation of corrosion / erosion damage in pipe lines and vessels subject to pressure.
Preparation of forecasts and opinions.
It consists of applying a colored or fluorescent liquid to the surface under study, which penetrates into any discontinuity that may be open to the surface. After a certain time, the excess liquid is removed and a developer is applied, which absorbs the liquid that has penetrated into the cracks. As a result the developer layer, the contour or "bleeding" of the discontinuities, is delineated.
It consists of magnetizing the piece with a magnetic yoke, applying the magnetic particles (dry or wet) and detecting the indications produced by the grouping of the particles, in the areas where there are discontinuities.
ULTRASOUND THICKNESS MEASUREMENT
It is an NDT technique designed to measure the remaining thickness in engineered materials, performed on a wide variety of materials, objects, shapes and sizes. The thickness (T), is a product of the speed of sound in the material and half of the transit time (round trip) through the material.
Ionizing electromagnetic radiation (gamma rays or X rays) passes through the part to be inspected. This radiation is more or less absorbed by the internal discontinuities of the piece, reaching the other side of it, with a different radiation intensity, being darker in the area of lesser thickness and lighter in the area of greater thickness.
LONG RANGE GUIDED WAVES
It is a non-destructive test for the detection of changes in cross section (CSA) or rigidity, where sound is handled at low frequencies. The range of 20 kHz to 100 kHz travels through the material, unlike conventional ultrasound waves that travel to both sides of the pipeline from the same point (axial length). The method does not provide a direct measurement of wall thickness or exact dimensions of the anomaly.
PHASE ARRAY ULTRASOUND
Based on the same physical principles as conventional ultrasound, the main difference is that PA technology includes multiple piezoelectric elements in one probe, allowing electronic manipulation of the sound beams through which a 2D image is obtained.
DETERMINATION OF HARDNESS
The hardness measurement procedure consists as a first step in carrying out a conditioning of the surface by means of a fine roughing until reaching a specific roughness value, then a mass, in this case the impact body with a tungsten carbide ball attached to its end, is bounced against the test surface at a speed defined by the force of the spring. The impact creates a plastic deformation of the surface because the impact body loses part of its original velocity, i.e. the softer the material, the greater the loss of energy.
PULSED EDDY CURRENT (PEC) are based on pulsed electromagnetism, effectively determines the average wall thickness through thermal insulation, coatings, paints, marine incrustations, concrete, or carbon fiber, allowing the detection and location of corrosion.
ANGLE BEAM ULTRASOUND
It is an NDT technique designed to detect internal anomalies by means of a "scan or sweep" mainly in welds, although it can also be applied to base metal.
REMOTE VISUAL INSPECTION
Visual observation by means of borescopes and/or hydroscopes to identify and visualize surface discontinuities in areas of difficult access, where direct visual inspection cannot be carried out.
STRAIGHT BEAM ULTRASOUND
It is an NDT technique designed to detect internal anomalies by means of a "scan or sweep" in a variety of materials, shapes and sizes. Thickness (T) is a product of the speed of sound in the material and half the transit time (roundtrip) through the material.
DIRECT VISUAL INSPECTION
Visual observation by the human eye to identify and dimension surface discontinuities by means of measuring equipment such as gauges, vernier, pit gauge, etc.
ACOUSTIC PULSE REFLECTOMETRY
It is a technique for the internal inspection of heat exchanger tubes, boilers, etc., for the detection of internal surface discontinuities. This consists of propagating an acoustic wave along the entire length of the tube detecting loss of internal material (pitting, erosion, corrosion), blockages and perforations.
The metallography is the technique that reveals the microstructure of the material, in other words, it reveals the size, grain shape and phases present, as well as the detection of micro discontinuities.
The process is carried out through a coarse grinding stage and fine polishing, and then the material is attacked with a chemical reagent which relieves the microstructure of the material, the observation is made by means of portable optical microscopes with different magnifications 100x, 200x, 400x. etc.