Non-Destructive Testing Services

Liquid penetrant testing is a nondestructive testing method used to detect fatigue cracks, surface porosity and other surface connected defects invisible to the naked eye in nonporous materials e.g. aluminium, stainless steel and plastics.

This is achieved by applying a chemical liquid, engineered to easily enter cavities, on the area of interest. A developer is then applied to the area making the penetrant liquid emerge from cavities and visually indicating the location, size and shape of the defect.

Magnetic particle testing is a nondestructive testing method used to detect surface breaking or slightly sub-surface defects in ferromagnetic materials and is primarily used to detect cracks invisible to the naked eye.

This is accomplished by magnetizing the whole specimen or applying a magnetic field locally on a part. A surface breaking flaw, e.g. a fatigue crack, will cause a flux leakage around the defect. This leakage is made visible by applying very fine irone particles suspended in liquid to the area of interest. The particles will accumulate at the flux leakages causing a build-up of particles that can easily be detected visually.

Ultrasonic testing is a volumetric nondestructive testing method where high frequency sound energy is sent into the testing specimen. Ultrasonic is used to detect and characterize both surface breaking and sub-surface defects such as cracks, delamination, disbonds, inclusions etc. The most common field of application is however thickness measurement where the thickness of a certain part or area can be determined with high accuracy.
Ultrasonic testing is applicable on most solid materials and structures e.g. sheet metals, plastics, composites, sandwich structures, ceramics.

Eddy current is applicable on all conductive materials and can be used to effectively detect surface breaking cracks and, to a certain degree, sub-surface defects. It is also used to measure conductivity and coating thickness and is well suited for inspection of coated surfaces.

The eddy current testing method use the principle of electromagnetic induction to induce a circular flowing electrical current in a conductive material.
When an eddy current probe is applied to the testing surface an electrical current, or eddy current, is induced around the probe. Any changes in the testing material such as cracks, changes in conductivity, metal thickness or coating thickness will interrupt or change the pattern and amplitude of the induced eddy current. This change is measurable by the probe and can easily be observed on the instrument.

X-ray, or Radiography, is a non-destructive volumetric testing method that utilizes x-rays or gamma rays to produce an image of the internal structure in a specific area.
X-ray can be used to penetrate and inspect a wide range of materials to inspect the internal integrity of a part or component and detect a large variety of flaws.

Replica testing is a method for replicating the microstructure and topography of a surface on a plastic film which can be evaluated in a microscope either at site or sent to a laboratory for further investigation.
Replica is a versatile method that can be performed in most environments and on surfaces inaccessible to other NDT methods. Replicas can be used to examine the structure of a surface or measure the depth of a scratch.

Thermography allows you to see the outside world in infrared light. By creating a visual image of heat transport, you can thereby detect deviations and errors. Each pixel in the image is stored with information about how much energy is sent to each pixel in the camera. Therefore, you can also see small temperature increases on small, as well as large objects. Thermography testing is mainly used to find temperature rises in electrical circuits, engine overheating and faults in the building’s climate screen.