Table 1.
Most common materials and types of damage used in aerospace components that are monitored with IRT.
| Materials | Applications | Types of Damage Monitored with IRT |
|---|---|---|
| Composite laminates (e.g., CFRP and GFRP) and hybrid composites (e.g., GLARE and CARALL) | Aircraft and spacecraft primary and secondary structures | Delamination |
| Impact damage and BVID | ||
| Interlaminar disbond | ||
| Porosity | ||
| Fibre/Matrix Cracking | ||
| Jet engine turbine blades | Thermal stress cracking | |
| Delamination between ceramic thermal barrier coating and the composite substrate | ||
| Honeycomb panels | Skin-to-core debonding | |
| Facesheet delamination | ||
| Honeycomb cell wall damage | ||
| Absence of adhesive | ||
| Water ingress | ||
| Core crushing | ||
| Metals | Aircraft and spacecraft primary and secondary structures, core for honeycombs and electromagnetic wave shields | Fatigue cracks parallel and perpendicular to the surface |
| Pores and voids | ||
| Corrosion | ||
| Material inclusions | ||
| Welded sheets without metal diffusion (“kissing bonds”) |