In-line residual strain monitoring for thermoplastic automated tape layup using fiber Bragg grating sensors

Publikationen: Beitrag in FachzeitschriftArtikelForschung(peer-reviewed)

Autoren

Externe Organisationseinheiten

  • Wrocław University of Science and Technology

Abstract

Automated tape layup (ATL) has been used extensively for manufacturing composites laminates using unidirectional prepregs for high-performance industries like aerospace. Residual stress is one of the defects that adversely affect the layup quality. These stresses affect geometrical tolerances in the form of distortion of the final product and are found to have a detrimental impact on the mechanical properties. In-line monitoring of such defects will help in productivity increase and achieving a reliable process control. The aim of the present work is to demonstrate the feasibility of fiber Bragg grating sensors for monitoring residual strains. FBGs are embedded inside a thermoplastic UD laminate. Temperature and strain discrimination is performed to recognize intermittent residual strains during the layup. Finally, intermittent residual strain is used to develop an understanding of the global residual strain. Effect of selective process parameter on residual stress formation and the evolution of the same is also analyzed.

Details

OriginalspracheEnglisch
Seiten (von - bis)1590-1602
Seitenumfang13
FachzeitschriftPolymer Composites
Jahrgang43.2022
Ausgabenummer3
DOIs
StatusVeröffentlicht - 5 Jan 2022