20.500.12556/DKUM-91982 Monitoring surface state of AA7075-T6 during dynamic loading with FBG sensor The AA7075-T6 material is widely used in aerospace applications due to its favourable strength-to-weight ratio and cost-effectiveness. The material undergoes a process of cold rolling and subsequent stretching to form metal sheets. This process generates residual compressive stresses on the surface of the material. Surface changes in the material are observed at low stress levels, resulting in variations in residual stresses and surface roughness. This article presents an approach to monitor the surface state changes of AA7075-T6 material during dynamic loading using Fiber Bragg Grating (FBG) sensor. Numerical Finite Element Method (FEM) simulations analyse the transfer of deformations from the damaged surface through the adhesive layer to FBG with different cladding thicknesses. Loading induces microcrack-related intensity changes in the FBG optical spectrum and deformation response. The magnitude of the response is greater, when the cladding thickness of the optical fibre is thinner. Experimental results show that the FBG optical spectrum response varies with cumulative number of dynamic cycles. AA7075-T6 dynamic loading Fiber Bragg Grating (FBG) sensor surface condition dinamične obremenitve Fiber Bragg Grating (FBG) senzor površinska obdelava true false true DAAAM International Vienna Angleški jezik Slovenski jezik https://www.ijsimm.com/ Članek v reviji 2025-03-10 12:04:51 2025-03-10 12:04:51 2025-03-11 03:12:00 0000-00-00 00:00:00 2023 0 0 str. 631-642 no. 4 Vol. 22 Dec. 2023 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2023-12-01 539.4:620.1 177641987 10.2507/IJSIMM22-4-663 1726-4529 text22-4_663.pdf text22-4_663.pdf 1 3AC4C418C23F1BA5A25E738F7D22B4E6 1f4b19775242a943d8627d39e6da0f241666ad7f437399c94414f97595bf20bd ac565410-fda0-11ef-b09f-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=189089 https://www.ijsimm.com/Full_Papers/Fulltext2023/text22-4_663.pdf 0 c4f4521f-fda0-11ef-b09f-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=189090 Fakulteta za strojništvo 0 0 0