Definition
The process of identifying and measuring the properties of a material — such as its composition, structure, strength, hardness, and response to heat or stress — to determine what it is and how it will behave in service.
Plain English
Figuring out exactly what a material is made of and how it behaves, by testing and examining it.
Context Anchor
Seen in aviation maintenance discussions about metals, composites, repairs, testing, and whether a part material is acceptable for service.
Derivation
From Latin 'materia' (matter, substance) and 'character' (a distinguishing mark or trait). To 'characterize' a material is to describe its distinguishing traits — what makes it what it is.
Why Pilots Care
Using the wrong or untested material in a repair can lead to part failure in flight.
Grounding Statement
Material characterization turns an unknown piece of material into known facts about what it is and what it can safely do.
Intuition Check
Do not read characterization as a personality description here. In maintenance, it means identifying and measuring the physical qualities of a material.
Example Sentence 1
Before approving the salvaged bracket for reuse, the shop sent it out for material characterization to confirm its alloy and heat treatment.
Example Sentence 2
After the composite repair, material characterization showed the patch would hold up under flight loads.