4.7 Article

Terahertz radiation in non-destructive testing of composite pyrotechnic materials

Journal

COMPOSITE STRUCTURES
Volume 279, Issue -, Pages -

Publisher

ELSEVIER SCI LTD
DOI: 10.1016/j.compstruct.2021.114770

Keywords

Non-destructive testing; Terahertz radiation; Pyrotechnic material

Funding

  1. National Centre for Research and Development of Poland [DOB-SZAFIR/02/A/001/01/2020]

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Terahertz (THz) technology has attracted more interest in recent years due to its unique properties for non-destructive evaluation (NDE). Materials like dielectrics are transparent to THz waves, while conducting materials like metals are opaque. The potential application of THz radiation in detecting defects in composite pyrotechnic materials is being explored.
In the past years, terahertz (THz) technology has received more interest and attention because of its unique properties and capabilities that make it very attractive as a tool for non-destructive evaluation (NDE). Most items consisting of dielectrics, such as plastic, glass fibre reinforced plastics (GFRP), ceramics, and certain composites (e.g., GFC), are transparent to THz waves, whereas metals and other conducting materials such as carbon fibre reinforced plastics (CFRP), are opaque to them. Solid pyrotechnics (e.g., rocket fuels) are among those materials that transmit terahertz radiation. The paper presents preliminary results of the possible application of terahertz radiation in the detection of defects in composite pyrotechnic materials.

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