Specific Energy Absorption Evaluation on GFRP Laminate Plate by Optical, Thermographic and Tomographic Analysis
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Over the years, a large number of studies have been carried out on glass fiber composite materials in order to analyze their impact behavior. This is very important for the automotive applications, for example for bumper or crash-box. This paper presents the analysis performed on GFRP (Glass Fiber Reinforced Polymer) laminated plate specimens (epoxy matrix reinforced with E-glass, twill woven, 200 g/m2) subjected to drop impact tests. The tests have been conducted at two different impact speeds in Low Impact Velocity LVI maintaining the same impact energy to estimate the strain-rate effect. All the tests were performed referring to ASTM 7136 at standard ambient temperature. Then the SEA (Specific Energy Absorption) of the specimens was calculated, using three different non-destructive measurement techniques (Optical Analysis, IRThermography and X-ray Computed) to analyze the surfaces of rupture and the specimen interlaminar damages. The chosen geometry of the specimens allowed to reduce the costs and to use a simplest test bench giving additional information to the material behavior.
KeywordsGFRP Impact NDE Thermography Tomography
The research has been performed by the IEHV (Innovative Electric and Hybrid Vehicles) Group at the Mechanical and Aerospace Engineering Department of the Politecnico di Torino.
We would like to thank the Labormetdue s.r.l. company for the contribution on Tomographic tests.
- 3.Carello M, Airale A, Ferraris A, Messana A (2014) XAM 2.0: from student competition to professional challenge. Comput-Aided Des Appl 11(sup1):61–67Google Scholar
- 4.Carello M, Airale AG, Ferraris A, Messana A, Sisca L (2017) Static design and finite element analysis of innovative CFRP transverse leaf spring. Appl Compos Mater. https://doi.org/10.1007/s10443-017-9596-6
- 5.Carello M, Airale AG (2014) Composite suspension arm optimization for the city vehicle XAM 2.0. In: Öchsner A, Altenbach H (eds) Design and computation of modern engineering materials, vol 54. Springer International Publishing, di Cham, pp 257–272Google Scholar
- 6.Carello M, Airale AG, Ferraris A (2014) City vehicle XAM 2.0: design and optimization of the composite suspension system. https://doi.org/10.4271/2014-01-1050
- 10.Kilic Y (2008) Impact and energy absorption of laminated and sandwich composites. Massachusetts Institute of Technology. https://dspace.mit.edu/handle/1721.1/44883. Accessed 17 July 2017
- 13.Quaresimin M, Ricotta M (2005) «Assorbimento energetico durante impatto in laminati in materiale composito», presentato al Associazione Italiana per l’Analisi delle Sollecitazioni-XXXIV Convegno Nazionale, MilanoGoogle Scholar
- 14.Meola C, Carlomagno GM, Ricci F, Lo Presto V, Caprino G (2009) Analisi del comportamento all’impatto di compositi con termografia all’infrarosso. presentato al 13° Congreso Associazione Italiana Prove non Distruttive, RomaGoogle Scholar
- 15.(2013)Application of thermography and acoustic emission to detect impact damage in CFRP. presentato al 3° International Conference of Engineering Against Failure, Kos (Greece)Google Scholar
- 16.Boritu A, Anghel V, Constantin N, Gavan M, Pascu A (2011) Non-destructive inspection of composite structures using active IR-thermography methods. Sci Bull 73(Serie D)Google Scholar
- 17.Meola C, Boccardi S, Boffa N, Maio L, Carlomagno GM (2014) Impact damage of carbon Fiber-reinforced composites: a comparison between infrared thermography and Ultrasonics. presentato al 11° European Conference on Non-Destructive Testing, PragueGoogle Scholar
- 19.Vergani L, Colombo C (2012) Thermographic evaluation of impact damage. presentato al 15th International Conference on Experimental Mechanics, Porto,Google Scholar
- 22.Leonard F (2014) An innovative use of X-ray computed tomography in composite impact damage characterisation. Presentato al ECCM-16 European Conference on Composite Materials, SevilleGoogle Scholar
- 23.Crupi V, Epasto G, Guglielmino E (2016) Internal damage investigation of composites subjected to low-velocity impact. Exp Tech:555–568, aprGoogle Scholar
- 25.(2015) Standard test method for measuring the damage resistance of a fiber-reinforced polymer matrix composite to a drop-weight impact event. ASTM International, ASTM 7316Google Scholar