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All our technicians currently are qualified to ASNT Level 2
We specialize in;
Boilers (Expert commodity)
Nondestructive testin or Non-
NDT methods may rely upon use of electromagnetic radiation, sound, and inherent properties of materials to examine samples. This includes some kinds of microscopy to examine external surfaces in detail, although sample preparation techniques for metallography and electron microscopy are generally destructive as the surfaces must be made smooth through polishing or the sample must be electron transparent in thickness.
Contrast between a defect and the bulk of the sample may be enhanced for visual examination
by the unaided eye by using liquids to penetrate fatigue cracks. One method involves
using dyes or non-
1. Section of material with a surface-
2. Penetrant is applied to the surface.
3. Excess penetrant is removed.
4. Developer is applied, rendering the crack visible.
In NDT, the structure undergoes a dynamic input, such as the tap of a hammer or a controlled impulse. Key properties, such as displacement or acceleration at different points of the structure, are measured as the corresponding output. This output is recorded and compared to the corresponding output given by the transfer function and the known input. Differences may indicate an inappropriate model (which may alert engineers to unpredicted instabilities or performance outside of tolerances), failed components, or an inadequate control system.
1854 Hartford, Connecticut: a boiler at the Fales and Gray Car works explodes, killing 21 people and seriously injuring 50. Within a decade, the State of Connecticut passes a law requiring annual inspection (in this case visual) of boilers.
1920 Dr. H. H. Lester begins development of industrial radiography for metals.
1924 — Lester uses radiography to examine castings to be installed in a Boston Edison Company steam pressure power plant.
1926 The first electromagnetic eddy current instrument is available to measure material thicknesses.
1929 Magnetic particle methods and equipment pioneered (A.V. DeForest and F.B. Doane.)
1950 The Schmidt Hammer (also known as "Swiss Hammer") is invented. The instrument
uses the world’s first patented non-
1950 J. Kaiser introduces acoustic emission as an NDT method.
(Source: Hellier, 2001) Note the number of advancements made during the WWII era, a time when industrial quality control was growing in importance.
NDT is used in a variety of settings that covers a wide range of industrial activity, with new NDT methods and applications, being continuously developed.
o It is aplicable in the Automotive industry (like engine parts and the frame); Aviation industry/ Aerospace; Poweplants ( Propellers, reciprocating engines, gas turbine engines); construcion (structures, bridges, cover meter); maintenance, repair and operations, the minig industry, manufaturing and many more