A high-speed scanning system has been developed to locate the centres of moiré fringes along any single line. The system comprises a rotating-mirror scanner for conversion of an optical signal to electrical; this conversion is followed by peak detection, storage, and print-out electronics. Up to 20 fringes can be scanned in 1 ms. The results are printed in terms of fringe separations along the scanning line.
FidlerR.NurseP.‘Developments in the technique of strain analysis by the moiré method’, VDI-Ber. 102196659–64.
3.
RossB. E.SciamarellaC. A.SturgeonD.‘Basic optical law in the interpretation of moiré patterns applied to the analysis of strains, Part 2’, Expl Mech.19655, 161–166.
4.
TheocarisP. S.Moiré fringes in strain analysis1967 (Pergamon Press Ltd, Oxford).
