Some of the different material evaluation we can carry out:
Carried out using a digital meter to determine the ferrite content of corrosion and acid resistant steels used in aggressive environments. With Ferrite testing we can check the amount of ferrite count in materials. The measurement range is typically from 0.1% to 80% Fe or from 0.1 to 110 FN. The results can be reported in either Ferrit percentage (%Fe) or Ferrit number (FN)
The applications for this instrument are numerous and include austenitic stainless steel welds, clad materials and base duplex steel. Data is stored on the instrument giving the operator instant results as to the levels of delta ferrite.
Other ferritic phases and transformed martensite are also recognised. Ferrite determination can also be carried out metallographically.
Soon to be covered under our UKAS accreditation to include specifications such as BS 5884, ASTM A342 and A.U.W.E. 29108, Magnetic Permeability is the ability of a material to become magnetized. The equipment, an electronic Permeability meter undertakes an accurate assessment of the materials relative permeability commonly referred to by the Greek letter µ and capable of measuring magnetic permeability in increments between 1.001µ to 1.999µ to a resolution of 0.001µ.
Electrical Conductivity testing is mostly carried out for Aerospace allocations.
Electrical conductivity is a property that measures how well a metal conducts electrical current and also provides information about its composition, microstructure or mechanical properties. The equipment measures electrical conductivity using the Eddy current method according to DIN EN 2004-1 and ASTM E 1004.
The high-precision instrument can be used for the following: Determination of the electrical conductivity of non-magnetic materials i.e. aluminium alloys, copper, stainless steel, monitoring heat treatment processes, determining the strength and hardness of wrought aluminium alloys in the aerospace and automobile industries and for the inspection of heat treatment damage.
Holiday Detectors / DC Pinhole are high voltage DC units used to find pinholes, flaws and porosity in non-conductive coatings. They can only be used to find flaws in coatings whose substrate is made from a conductive material (metal, concrete etc).
Used for detection of coating porosity (pinholes or holidays) in dielectric (insulation type) coatings on conductive substrates, including concrete.
Suitable for production pipeline coating operations, tankwork and structures. Ideal for use on storage tanks, valves and pipelines.
John Evans LEP MIAQP – Senior N.D.T. Inspector
John is an NDT Specialist with over 35 years experience in Weld Testing and Inspections.
Over the years John has attained many qualifications and is our senior NDT inspector. John is a Mentor for our new apprentices and he provides hands-on training in our Material Evaluation department. Current qualifications include Aerospace for NDT and Material Evaluation.