Thermal Methods for Damage Evaluation of Metallic Materials
A special issue of Metals (ISSN 2075-4701).
Deadline for manuscript submissions: closed (31 March 2019) | Viewed by 24112
Special Issue Editors
Interests: non-destructive techniques; fatigue strength study by means of thermal methods; fracture mechanics behavior of material
Special Issues, Collections and Topics in MDPI journals
Interests: fatigue; fracture mechanics; thermoelastic stress analysis; thermography; heat dissipations; mechanical characterisation of metals; mechanical characterisation of composites
Special Issues, Collections and Topics in MDPI journals
Special Issue Information
Dear Colleagues,
Thermography is a well-established, non-contacting and full field technique based on detecting of surface temperature of material. Infrared thermography–non-destructive technique (IR-NDT) presents suitable peculiarities for the investigation of large areas, since i) it does not require the coupling with the component, ii) it is easily automated, and iii) the testing time is relatively shorter with respect to other well-established NDT techniques. In view of this, thermal methods have been used in the last few years in many applications to study the fatigue behavior of metallic materials and components, or for evaluating defects that could compromise the mechanical strength of materials.
In the literature, different methods have been developed, considering temperature as a parameter for evaluating the damage of materials. Other methods are based on specific data processing of recorded infrared sequences. In particular, in this case, the infrared signal is processed in the frequency domain in order to obtain information about the second order frequency of thermographic signals, directly correlated to damage phenomena. Metallic materials, such as aluminum alloys, are characterized by a high thermal conductivity coefficient and a high thermal diffusivity; thus, a suitable experimental set-up and procedures are needed to detect damage.
Dr. Umberto Galietti
Dr. Davide Palumbo
Guest Editors
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Keywords
- Thermography
- Fatigue
- Fracture Mechanics
- Metals
- Thermoelastic Stress Analysis
- NDT