What is Non-Destructive Testing?

Types of Non-Destructive Testing (NDT) and Non-Destructive Inspection

Non-Destructive Testing (NDT) is the examination of an object or material with technology that does not affect its future usefulness. NDT techniques do not harm or destroy the object under test. NDT can provide an excellent balance of quality control and cost-effectiveness without affecting manufacturing yield.

The term "NDT" includes many methods that can:
· Detect internal or external defects
· Determine structure, composition or material properties
· Measure geometric characteristics

NDT can and should be used in any phase of a product's design and manufacturing process, including materials selection, research and development, quality assurance and production. 

Non-Destructive Testing is also known as Non-Destructive Evaluation (NDE) or Non-Destructive Inspection (NDI).

Different Types of NDT Methods

• Resonant Inspection (RI)
• Radiography X-ray (RT)
• Computed Tomography (CT)
• Magnetic Particle Testing (MT)
• Ultrasonic Testing (UT)
• Electromagnetic Eddy Current (ET)
• Acoustic Emission Testing (AE)
• Liquid Penetrant Testing (PT)
• Optical Testing
• Visual Inspection

Traditional NDT Technique Comparison

Excellent

Fair

Poor

	RAM Resonant Acoustic	ET Eddy Current	MT/PT Magnetic/ Penetrant	UT Ultrasonic	RT Radiography
Defect/Issue
Cracks/Chips/Voids
Material Properties
Missed Operations
Structural Integrity
Product Lot Variation
Defect Location
Surface (External)
Internal
Brazing/Bonding/Welding
Speed/Training/Cost
Throughput
Training/Certification
Total Inspection Costs
Automation Capacity
Quantitative Results
Ease of Automation
Cost of Automation

NDT-RAM™ is short for Nondestructive Testing Resonant Acoustic Method. NDT-RAM is Resonant Inspection (RI) for nondestructive detection of structural differences in parts.

Industries that benefit from NDT-RAM:

• Aerospace
• Automotive
• Medical
• Consumer
• Commercial
• Construction
• Marine
• Military 

Manufacturers that benefit from NDT-RAM:

• Powder Metal
• Metal Injection Molding (MIM) 
• Additive Manufacturing
• Castings
• Ductile & Gray Iron Casting
• Die Cast Aluminum
• Forged Metal
• Bearings
• Ceramic
• Metal Bonding
• Composites
• Tooling and Deburring Bits


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Learn More
• Resonant Acoustic Method
• How the Equipment Works
• Measurement and Detection Principles
• Advantages of NDT-RAM™
• Case Studies
• Comparison of Non-Destructive Methods
• Resonant Inspection Technical Paper Archive

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