Issue 48

R. S. Y. R. C. Silva et alii, Frattura ed Integrità Strutturale, 48 (2019) 693-705; DOI: 10.3221/IGF-ESIS.48.65 697 accelerometers were positioned in a vertical direction as illustrated in Fig. 3. All the experimental accelerations of the intact bridge and the damaged bridge cases were provided by the Structural Vibration and Solutions (SVIBS) company which developed the ARTeMIS software [16]. Fig. 3. Instrumentation used in the bridge: (a) Instrumental layout;(b) Longitudinal view. (a) (b) (c) (d) Figure 4 : Experimental natural frequencies and mode shapes: (a) First flexural mode shape; (b) First torsional mode shape; (c) Second torsional mode shape; (d) Third torsional mode shape.