Published on 10-Apr-2024

Destructive vs Non-destructive Testing: What's the difference?

Destructive vs Non-destructive Testing: What's the difference?

Table of Content


What is Non-destructive Testing?

Metal and metal forging has been prevalent since before 6000 BC.

The metal smiths, since those primitive days of metal processing, developed various methods to estimate the temperature of the metal in the furnace to gauge if it was ready for its intended use (hammering, casting, heat treatment, etc.) 

The visual indicator, in this case, was the color of the heated/superheated metal, which gave the metal smith an idea of its temperature and properties.

The Visual Testing color indication chart for a steel alloy with a 0.40 carbon percentage is shown in the image below:

Visual Testing Color Indication Chart

Modern-day techniques allow the usage of a no-contact infrared-based measuring device, called a pyrometer, for the aforementioned purpose.

Non-destructive Testing is a method for qualitatively analyzing structures, materials, products, and/or machinery.

This Non-destructive Evaluation technique provides the opportunity to assess the status of structures, machinery, and materials without causing any damage or inhibiting their purpose.

The Types of Non-destructive Testing available in today’s day and age are as follows:

Non-destructive testing permits the evaluation of the test subjects (materials, products, or structures) during manufacturing, usage, and after failure.

This makes it a viable testing option for the Automation Industry, construction, petrochemical, aerospace, mining, and electrical power industries.