72800 - Diagnostics and Testing of Structures M

Course contents

DIAGNOSTICS AND TESTING OF STRUCTURES
Part 2

Measurements and instrumentation
Elements of Metrology: measurements, calibration curves, resolution, repeatability, accuracy, sensitivity, linearity, hysteresis.
Traditional and innovative instrumentation  for measures of distance, displacement, tilt, strain, crack opening, vibration, force, stress and temperature.
Special measurement techniques: fiber optic sensors, non-contact sensors, MEMS, laser vibrometry, photoelasticity, DIC.
Experimental methods for the evaluation of stress states
Calculation of the stresses from measured strains. Methods of tension release. Identification of the stress in metal ties.
Non-destructive testing and coring of concrete
Moderately destructive and non-destructive testing of concrete structures. Magnetometry for the identification of reinforcing bars. Coring. Non-destructive methods (rebound hammer, ultrasound, other methods).
Survey procedures, processing of the experimental data for estimating the concrete compressive strength and for the analysis of the defects, standards.
Microseismic surveys
Wave propagation in solids. Microseismic surveys in the sonic and ultrasonic fields, diagnostics of structural elements in concrete, natural stone and marble: physical basis, instrumentation, operating procedures, processing and analysis of the results.
Testing of existing masonry structures
Moderately destructive and non-destructive testing of masonry structures. Flat jacks, shear tests of bed joints, penetration tests, testing of small samples.
Advanced techniques for the diagnosis of civil structures and cultural heritage
Radar: physical basis, instrumentation, operational procedures and applications. Thermography: an outline.
Structural Monitoring
Variables to be monitored. Factors affecting monitoring. Monitoring levels. Networks. Monitoring of crack patterns. Analysis of data.

The course material is available at AMS Campus.
Prof. Pascale can be contacted at: giovanni.pascale@unibo.it
Students are invited to subscribe to the faculty-student list giovanni.pascale.diagnostica-bo for receiving communications from the teacher.

Readings/Bibliography

G. Menditto – S. Menditto: “Indagini semidistruttive e non distruttive nell'ingegneria civile: disciplina tecnica, applicativa e normativa”, Pitagora, Bologna, 2008.

G. Pascale: “Diagnostica a ultrasuoni per l'edilizia: costruzioni civili – beni culturali”, Flaccovio, Palermo, 2008.

R. Pucinotti: “Patologia e diagnostica del cemento armato”, Flaccovio, Palermo, 2005.

E. Ruggerone: “Diagnostica strutturale”, Flaccovio, Palermo, 2005.

A. Bray, V. Vicentini: “Meccanica sperimentale – misure ed analisi delle sollecitazioni”, Levrotto e Bella, Torino.

J.W. Dally, W.F. Riley: “Experimental Stress Analysis”, McGraw-Hill, 1991.

A. Ajovalasit: “Estensimetri elettrici a resistenza”, Aracne, Roma, 2006.

V.M. Malhotra, N.J. Carino: “Handbook on Nondestructive Testing of Concrete”, CRC Press, USA, 2004.

F. Ansari: “Fiber optic sensors for construction materials and bridges”, Technomic, Lancaster, USA, 1998.

M.J. Sansalone, W.B. Street: “Impact-echo”, Bullbrier Press, Ithaca, N.Y., 1997.

Office hours

See the website of Giovanni Pascale

See the website of Claudio Mazzotti