Radiographic Testing
Advanced X-Ray Inspection for Internal Defect Detection. Mitchell Laboratories provides high-resolution radiographic testing (RT) using digital and film methods to uncover internal flaws in critical components.
What Is Radiographic Testing?
Radiographic Testing (RT) is a non-destructive method that uses X-rays or gamma rays to detect internal flaws in components such as castings, welds, and assemblies without damaging the part.
Advantages of Radiographic Testing
- Internal Flaw Detection: Accurately identifies cracks, voids, inclusions, and misalignments hidden deep within materials.
- Volumetric Coverage: Examines the entire volume of the part, not just the surface, making it ideal for welds, castings, and composites.
- Permanent Inspection Record: Produces film or digital radiographs that can be stored, reviewed, and audited for quality compliance.
- Minimal Surface Preparation: Only basic cleaning is needed before inspection, saving time while maintaining image quality.
- Clear Visual Output: Generates easy-to-interpret images for quick evaluation and decision-making by trained technicians.
- Flexible Format Options: Supports high-resolution digital radiography for speed and archiving, or traditional film for maximum precision.
- Material and Assembly Versatility: Effective on metals, aerospace structures, electronics, bonded materials, and complex assemblies.
Limitations of Radiographic Testing
While radiographic testing offers deep internal flaw detection and permanent records, it does have a few limitations:
- Access to both sides of the test material is required
- Higher cost compared to penetrant or magnetic particle testing
- Limited effectiveness on complex or irregularly shaped parts
- Very small or thin defects may not be detected
- Defects perpendicular to the X-ray beam may not appear clearly
Basic Principles of Radiographic Testing
Radiographic Testing (RT) uses a controlled source of X-rays or gamma rays to inspect the internal structure of a component. The radiation passes through the material and is captured on a detector—either traditional film or a digital imaging system—positioned behind the part.
As the rays travel through the object, variations in material thickness or density affect how much radiation is absorbed. Areas with internal discontinuities, such as cracks, voids, or inclusions, absorb less radiation and appear darker on the image. This contrast forms a visual representation of the internal condition of the part.
Mitchell Laboratories ensures precision at every step, including source calibration, exposure timing, and image development. Whether using film or digital methods, our certified technicians deliver clear, repeatable results backed by detailed documentation for compliance and quality assurance.
Common Applications
- Welded Assemblies
- Aircraft Structures
- Pressure Vessels
- Electronics & Assemblies
- Composite Materials & Honeycomb Structures
- Precision Castings & Forgings
Quality Assurance & Compliance
- ISO 9001 & AS9100D Certified
Our procedures meet the latest ISO 9001 quality-management standards and AS9100D aerospace requirements. - ITAR Registered
Full compliance with International Traffic in Arms Regulations for defense and government work. - NADCAP Accreditation
Nadcap-approved processes at our Pico Rivera, Fontana, and South Gate facilities, ensuring industry-recognized special-process controls. - In-House Chemical & Metrology Labs
Real-time process monitoring and image verification ensure precise exposure and accurate radiographic interpretation. - Qualified, Certified Personnel
Technicians trained per SNT-TC-1A and NAS 410 standards for radiographic testing, ensuring every inspection is performed by experts. - Continual Improvement Program
Regular internal audits and customer-driven process reviews to optimize quality and delivery.
Frequently Asked Questions
We offer both digital radiographic testing (DR) and film-based radiographic testing (RT), depending on the inspection requirements and the level of detail needed.
RT works effectively on metals, composites, welds, castings, and multi-layered components. It’s ideal for parts requiring full internal inspection without disassembly.
Yes. All radiographic procedures are performed in shielded environments by certified technicians following strict safety protocols in compliance with local and federal regulations.
Lead times are quoted on a job-by-job basis to ensure accuracy, and we’re happy to accommodate emergency or rush requests. Backed by decades of refining our expedited process under strict deadlines, we minimize turnaround without ever sacrificing quality, returning your parts quickly and reliably.