Visual Inspection (VT) is the oldest and most widely used Non-Destructive Testing (NDT) method, serving as a cost-effective quality assurance tool across industries. It involves direct observation of an object’s external features to detect surface discontinuities and defects without the need for specialized equipment.

• A technician examines the test specimen under proper lighting conditions using the naked eye.
• Magnifying tools (e.g., magnifying glass, mirrors, microscopes, or borescopes) may be used to identify smaller flaws that aren’t visible to the unaided eye.
• This method allows for quick, reliable, and cost-efficient defect detection, making it a preferred first step in quality control.

Surface defects are often the most critical and unacceptable flaws in a component. VT allows for early detection, helping avoid costly secondary testing methods unless needed.

Although widely practiced for centuries, the American Society for Nondestructive Testing (ASNT) didn't formally recognize Visual Testing (VT) until 1988. Since then, VT has become a key requirement in many industry standards, including:

• dummyAmerican Society of Mechanical Engineers (ASME)
• dummyAmerican Society for Testing and Materials (ASTM)
• dummyNational Aerospace Standard (NAS-410)

• dummy Simple & Cost-Effective – Requires little to no specialized equipment
• dummyQuick & Efficient – Immediate results for rapid decision-making
• dummyWidely Applicable – Used in almost every industry as a first-line inspection method
• dummyNon-Invasive & Safe – No exposure to radiation or hazardous substances

• dummySurface-Only Detection – Cannot identify sub-surface flaws
• dummyDependent on Lighting & Angle – Poor visibility can affect accuracy
• dummyTechnician Skill Matters – Requires trained personnel to recognize defects accurately

At Certified Testing Systems (CTS), we provide expert visual inspections to help identify surface defects early, ensuring product integrity, safety, and compliance.

Contact us today to learn more about our inspection services!

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