NDT Inspection: Materials Testing

Materials testing is the evaluation of components or systems in a non-destructive fashion to detect flaws, contamination, inconsistency in material or other physical parameters. A materials test will use methods which allow for in-depth analysis without destroying the sample or, if it is a product, rendering it useless.

An ultrasonic flaw detector will emit high frequency sound waves which, when they bounce off of flaws, produce echo patterns that can reveal cracking, excess porosity and other structural anomalies. Thickness gauges, on the other hand, determine the thickness of an object by sending ultrasonic waves into its center, recording the speed of sound through the test sample and calculating thickness from the data.

Laser methods can assess the makeup of an object as well; a laser micrometer reveals how brittle, elastic, deformed or soft something is, as well as its temperature. Ionographs discover ionic contamination in electronic components like printed circuit boards. Other technologies, like roughness testers and coordinate measuring machines, use styluses or probes to gather data on the consistency of the exterior and its exact spatial measurements respectively.
 
  • Coordinate measuring machines, or CMM, give precise dimensional measurements of physical objects. Gathering data over an XYZ axis, coordinate...

  • Ionographs perform contamination cleanliness testing on components like printed circuit boards (PCBs) with water or alcohol extraction media. The...

  • Micrometers and comparators are capable of providing fast, accurate data of manufactured and hard-to-measure parts. These powerful tools can...

  • Roughness testers and surface profilometers are used to determine a material’s roughness through a variety of parameters. Though both tools answer...

  • Ultrasonic thickness gauges are measuring instruments used to determine the thickness of a given material. This non-destructive investigation is...

  • Flaw detection is perhaps the oldest and most common application of industrial ultrasonic testing. Flaw detectors emit high frequency sound waves...