| Mechanics of materials and experimental mechanics |
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In collaboration and with the sponsorship of national and international industries and research agencies, the Department has been involved in several researches on the mechanical behaviour of materials, components and mechanical structures. The laboratory is equipped for performing standard static and loading variable tests including: • Tension tests up to 250kN (with electro-hydraulic MTS and Schenk loading machines);• Multiaxial tests with tubular specimens under torque, axial load and internal pressure. The design and conduction of non standard tests with specific requirements have been one of the main activities of the lab. Some recent non standard tests are summarised hereafter: • Characterisation of composite laminates which can be produced by the available autoclave; • Fracture mechanics tests on large size (700 kg) plate specimens under thermal shock loadings; • Fracture mechanics tests on composite specimens; • Tensile tests at controlled strain rate on different kinds of hydrogen embrittled specimens; • Biaxial creep tests on tubular specimens at high temperature; • Measurement of elastic and thermal properties of ceramic layers up to 900°C;  • Tests for measuring the strength of ceramic layers under cyclic thermal loadings; • Different types of tests on mechanical components including: auto and moto vehicle, power transmissions, bolted, welded and glued joints, etc.. Residual stress measurement and modelling has been one of the main research topics in the recent years. An experimental equipment and original interpretation procedures are available for obtaining an accurate evaluation of near the surface complex residual stress fields by the hole drilling method which can be applied for instance to surface treatments. For measuring mechanical properties, several standard experimental procedures are available including: strain-gauges, accelerometers, thermocouples. For evaluating strain and stress, full field methods based on automatic elaboration of digital images (greed method or photoelasticity) have been developed. Ultrasonic techniques have been applied for detecting the damage in composite laminates with tomographic analyses. Contact person Prof. M. Beghini E-mail This e-mail address is being protected from spambots. You need JavaScript enabled to view it Dr. Ing. Ciro Santus E-mail This e-mail address is being protected from spambots. You need JavaScript enabled to view it null |