Surface Crack Detection in Prestressed Concrete Cylinder Pipes Using BOTDA Strain Sensors

Table 2

Average measured and numerical hoop strains for load cases  1–3.

Case	1	2	3
Average hoop strain from SWPFOS (με)	60	80	100
Average hoop strain from PEPFOS (με)	65	90	115
Average hoop strain from FE simulation (με)	58	87	116