Nondestructive Evaluation of Aluminium Foam Panels Subjected to Impact Loading

Aluminium foam sandwich structures have excellent energy absorption capacity, combined with good mechanical properties and low density. Some of the authors of this paper proposed an innovative Metallic Foam Shell protective device against flying ballast impact damage in railway axles. A closed-cell...

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Bibliographic Details
Published inApplied sciences Vol. 11; no. 3; p. 1148
Main Authors Epasto, Gabriella, Distefano, Fabio, Mozafari, Hozhabr, Linul, Emanoil, Crupi, Vincenzo
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.01.2021
Subjects
aluminium foam sandwich panels
Aluminum
Ballast
Composite materials
Energy absorption
Fiber reinforced polymers
Glass fiber reinforced plastics
Impact damage
Impact loads
Impact strength
Impact tests
lightweight structures
low velocity impact tests
Mechanical properties
Metal foams
non-destructive evaluation
Nondestructive testing
Offshore
Offshore structures
Phased arrays
Polymers
Protective structures
Radiography
Sandwich structures
Shafts (machine elements)
Skin tests
Thickness
ultrasonic phased array
Ultrasonic testing
Velocity
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Summary:Aluminium foam sandwich structures have excellent energy absorption capacity, combined with good mechanical properties and low density. Some of the authors of this paper proposed an innovative Metallic Foam Shell protective device against flying ballast impact damage in railway axles. A closed-cell aluminium foam was chosen for the Metallic Foam Shell device. The main goal of this study was the experimental investigation of the impact responses of aluminium foam panels. Low velocity impact tests were carried out at different energies on different types of aluminium foam panels in order to investigate the effects of some parameters, such as core thickness, skin material and layer. Tests were conducted at repeated impacts on aluminium foam panels without and with skins made of aluminium and glass fibre-reinforced polymer. The experimental results were compared and the impacted panels were investigated by means of the nondestructive techniques ultrasonic phased array and digital radiography.
ISSN:2076-3417
2076-3417
DOI:10.3390/app11031148