



GNAT Technologies is a specialist Non-Destructive Testing (NDT) company providing end‑to‑end solutions across consultancy, inspection, equipment, and training for aerospace and high‑reliability industries. With over 40 years of experience and Level 3 expertise, we deliver accredited NDT services including penetrant testing (PT), magnetic particle testing (MT), radiography (RT), and focal spot checks for X‑ray systems, with a strong focus on repeatable quality and fast turnaround.
Beyond services, they design and manufacture automated and semi‑automated PT and MT systems, as well as custom X‑ray solutions from conventional to computed radiography, in partnership with leading brands such as Fujifilm. Their team also supplies a wide range of NDT consumables, instruments, and accessories, allowing customers to work with a single, technically capable partner for both equipment and day‑to‑day needs. Whilst offering Calibration and Lab Testing services alongside selling equipment. Combining deep technical knowledge with responsive support, they help their clients improve reliability, meet stringent standards, and reduce inspection bottlenecks.
Our dedicated Fluorescent Liquid Penetrant Testing (PT) laboratory performs high-sensitivity Type I inspections using industry-approved fluorescent penetrants and controlled processing conditions. We detect fine surface-breaking defects in aerospace components through a proven 6-stage process: pre-cleaning, penetrant application, dwell, excess removal, development, and blacklight inspection in dedicated UV booths.
Surface Crack Detection: Effectively identifies surface-breaking flaws such as cracks,
porosity, and seams on both ferrous and non-ferrous materials.
• Quick and Cost-Effective: Simple testing process with fast results, making it ideal for
on-site inspections and routine quality checks.
• High Sensitivity with Visible or Fluorescent Dyes: Offers clear visual indications under
normal or UV light for accurate flaw detection and evaluation.
• 9 Meter long FPI System suitable for testing 1000 mm long parts.
• Has both post-emulsifiable and water-washable penetrants process.
Magnetic Particle Inspection (MPI) is a nondestructive testing method used to detect surface and near-surface defects in ferromagnetic materials. By magnetizing the component and applying fine magnetic particles, any discontinuities—such as cracks, seams, or inclusions—create leakage fields that attract the particles, forming visible indications of flaws. This quick and reliable technique is ideal for inspecting welds, castings, forgings, and critical aerospace or industrial components where safety and structural integrity are paramount.
Effective Surface & Near-Surface Flaw Detection: Identifies cracks, seams, laps, and
other discontinuities in ferromagnetic materials.
• Quick & Portable Testing Process: Ideal for on-site inspections with immediate visual
results using dry or wet magnetic particles.
• Visible & Fluorescent Indication Options: Offers high sensitivity through colour-
contrast or UV fluorescent methods for precise defect visualization.
• Three-phase full-wave DC / AC MPI machine.
• Digital metering and variac control to achieve linearity even at low current values.
• Current output – 4000 amp for circular & 15 kA at 350 mm dia coil for longitudinal
magnetization.
• Demagnetizer - 350 mm port.
In-house x-ray facility (2 x-ray bays with up to 320kv capability).
• Internal Defect Detection: RT can locate internal structural discontinuities such as
cracks, voids, porosity, and inclusions, which might not be visible from the outside.
• Volumetric Inspection: RT is regarded as one of the most universal methods for
assessing the integrity of the entire volume of a material or component, providing a
clear visual rendition of internal flaws.
• Permanent Records: RT inspections produce permanent images or digital records,
which are invaluable for documentation, quality assurance, and future reference.
• Versatility: This method is applicable to a variety of materials including metals,
composites, and concrete, and can be used throughout various stages of a
component's lifecycle.
• Accuracy and Precision: Radiographic images offer high clarity and allow for accurate
interpretation and analysis of detected anomalies.
High-Resolution Images: Digital radiography provides enhanced image quality and
clarity with better resolution, improved contrast, and greater dynamic range, making
it easier to identify and interpret even subtle defects.
• Reduced Radiation Exposure: DR technology generally operates at lower radiation
doses while still delivering high-quality images. This enhances safety for both
inspectors and the public and is more environmentally friendly.
• Efficient Data Management: Digital files are easy to store, retrieve, transfer, and
archive. DR supports streamlined electronic data management, facilitating quick
sharing with engineers or customers and easy integration with defect analysis
software.
• Real-Time Imaging: DR supports real-time or near real-time inspection, which is
valuable for rapid in-process quality assessments, especially in critical applications
like weld or pipeline inspection.
• Resource Efficiency: It eliminates the need for film processing chemicals, darkrooms,
and associated waste, reducing operating costs and environmental impact.
• Portability and Flexibility: Many digital radiography systems are portable, enabling
field inspections in remote or challenging environments.
• Wider Dynamic Range: DR can accommodate parts with varying thicknesses in a
single exposure while maintaining image quality.
Visual Inspection is a fundamental nondestructive testing method used to assess the surface condition of materials and components for visible defects such as cracks, corrosion, or misalignment. Simple yet powerful, visual inspection is often the first step in quality control—ensuring safety, reliability, and compliance before more advanced testing methods are applied.