Lab full name

Structural Diagnostic and Thermal Methods for Experimental Mechanics

ERC 2nd Level Code

ERC 3rd level Code

PE8_9 Production technology, process engineering

Research Activities

The Lab carry on research activities mainly on the following topics:
1.   Structural Diagnostic: traditional applications, new applications and development of new non destructive techniques (Thermal methods –IRT; Ultrasound – UT; magnetic particles – MT; Penetrant – PT; Strain Gauges – SG; Eddy Current - EC; Xrays – only interpretation)
2.   Rapid characterization of fatigue behavior of materials/components with InfraRed techniques
3.   Monitoring of manufacturing (Automated Fiber Placement and technological processes (Friction Stir Welding) and analysis of the process for mechanical behavior of components
4.   Coatings analysis: thickness evaluation, quality of adhesion, non destructive evaluation, tribological characterization (in cooperation with tribolab)
5.   Stress analysis with Thermoelastic Stress Analysis (TSA)
6.   Damage monitoring (Acoustic Emission; Thermography, TSA etc)
7.     Fracture Mechanics

The lab is equipped with all needed and up to date instruments for non destructive testing (3 UT systems with possibility of c-scan, MT, PT, 5 Thermocameras in all possible ranges and performances, Eddy current system with single and differential probes, Strain gauges, hole drilling rosette for residual stresses, etc)
In particular the possibility to use 100kN MTS Hydraulic loading machine with thermal cameras allows the fast analysis of fatigue behavior of various materials (tested for aluminum alloys, titanium alloys, traditional and innovative steels, composites) with fatigue limit evaluation in about 3 days instead of 6-8 weeks need for standard testing. Research carried out in the lab showed the possibility to obtain the entire fatigue curve. Research also focuses on the study of Fracture Mechanics behavior of materials in order to localize the crack tip position and to assess the crack propagation law.
The strong point of the adopted approach is the applicability on operating real and complex shaped components (i.e. FSW welded joints).

The research group was awarded of:
a. AEA Technology award during 1998 International Conference of Experimental Mechanics
b. Innovation Award of ALENIA AERMACCHI 2014 for development of thermographic innovative technique for resin pocket characterization
c. Innovation Award of FINMECCANICA 2014 for development of a system for quantitative measurements of resin pockets.
d. AIAS award 2015 for best paper presented in 2014 conference of Italian Association for Stress Analysis
e. Best Student Paper at 2017 SPIE Conference “Thermosense”

The vision of the lab is that all engineering lab activities has to be properly used in the territory. The effort is to consider always in the development of new application or new technologies the possibility for a proper implementation of the results of the research in production line or product development. The lab cooperates strictly with the spinoff company DES - Diagnostic Engineering Solutions. All activities carried out in the lab are and can be industrialized and customized in proper in line control.
The scientific coordinator registered 4 patents: 2 European related to new instruments for Non Destructive Testing based on thermography and 2 national patent (one for thermography application and one for monitoring blood pressure with a wearable device).
The lab is involved actively in a number of industrial and research projects PON, regional, private.

Department

DMMM

Contact Person

Umberto Galietti

umberto.galietti@poliba.it

Companies and Institutions

Université Montpellier II – Laboratorie de Mécanique et Genie Civil.-France

Instituto Tecnológico de Aeronáutica-Sao José dos Campos-SP-Brazil Departamento de fisica aplicada I- Escuela de Ingeniería de Bilbao-Spain Universitè Livree de Brussels (Be)

University of Sheffield (UK)

University of Manchester (UK)

Dublin City University (IR)

University of West Scotland (UK)

Onerà (FR)

CIRA (IT)

CETMA (IT)

CNR - ISSIA (IT)

CNR - ITIA (IT)

Università di Palermo (IT)

Università del Salento (IT)

Bosch

Leonardo

CALEF

FIAT Research Centre

Isotta Fraschini

Centro Laser

Master

Analysa

Jonica Impianti

Mermec

Sitec

RFP

ELFIM

ITRIB (ES)

Fraunhofer Institute

General Electric (Nuovo Pignone)

Avio

Facilities

DeltaTherm 1560 by StressPhotonics, InSb detector with 320 × 256 pixels, up to 400 Hz, 3-5 mm, NETD <18mK Flir X6450 sc, InSb detector with 640 × 512 pixels, 125 Hz full frame, 1.5-5 mm, NETDFlir 655 sc, 640x512 microbolometer sensor, 50 Hz full frame, 8-

Flir A20, microbolometer with 320 × 240 pixels, up to 60 Hz, 8-14 mm, NETD <55 mK, complete with zoom and portability kit.

Flir i7, microbolomeric sensor 160x140

Fluke 4180 black body

Hanna HI766B2 type K thermocouples suitable for high temperature measurements

ervohydraulic Traction-Compression loading machine: MTS (Fmax = ± 100kN)

Set of halogen lamps with 500W, 1000W power

Bowens QUADX 3000J flash lamps

IPG laser, Model YLP-1-100-30-30-HC, 1064 nm, 30W

Elite penetrating liquids

Silver Yoke SY1 electromagnetic yoke for magnetoscopy

Wood's lamp

Casoni EEC 35+ BOX eddy current instrument

Metal Scan Sinus ultrasound system with variable frequency between 1.2 -13.1 MHz

CS-5008 acquisition system by Instrumentation device

Agilent 34971 Digital Multimeter

Services

Characterization of materials with accelerated methods (thermographic);

Non-destructive tests with PT, MT, UT and TT techniques.

Fatigue damage analysis with thermographic techniques.

Umberto Galietti

SD&TM Lab