Investigation of Ballistic Impact Response of Aluminum Alloys Hybridized with Kevlar/Epoxy Composites

Eyüp YETER

doi:https://doi.org/10.2339/politeknik.417758

Makale detayları

Investigation of Ballistic Impact Response of Aluminum Alloys Hybridized with Kevlar/Epoxy Composites

Yazarlar:

Eyüp YETER

Yayıncı:

Gazi University

Ana Başlıklar:

Uygulamalı fizik

Dergi:

Journal of Polytechnic 2019 Vol.22 Issue 1, pp.219-227

Belge Tipi:

Makale

Yayın Tarihi:

2/2019

Belge Dili:

İngilizce

Document ID (Org No.):

2000590340

Sıklık:

Aylık

eISSN:

2147-9429

DOI:

https://doi.org/10.2339/politeknik.417758

Özet:

 


In this comparative study,
ballistic impact responses of various aluminum alloys hybridized with
Kevlar/Epoxy composite is investigated numerically. The numerical models were
developed using the explicit finite element module of ANSYS. 50 caliber projectile
with an initial velocity of 400 m/s is used during the analyses. In the first
part of the study, 7075, 6061 and 2024 aluminum alloys are compared for their
ballistic impact resistance. Amount of perforation energies (energy absorbing
capacity of target) and projectile residual velocities of these alloys are
compared. Also, thicknesses of plates are increased up to the point at which
the plates don't exhibit full perforations for the used projectile and initial
velocity. It is seen that that residual velocity of the Al 7075 T6 is the
smallest among the used aluminum alloys which means that 7075 T6 type of
aluminum has the higher ballistic impact resistance. In the second part of the
study, six different hybrid models that have different combinations of Al 7075
and Kevlar29/Epoxy are proposed. Perforation energies and projectile residual
velocities of these proposed models are compared under ballistic impact
loadings. It was shown that the hybrid model with 6AL-6KEV orientation, was the
optimum structure to resist the ballistic impact loading among the proposed
models. Which means that the plate with this orientation has exhibited the
maximum energy absorbing characteristics.  

.

 


In this comparative study,
ballistic impact responses of various aluminum alloys hybridized with
Kevlar/Epoxy composite is investigated numerically. The numerical models were
developed using the explicit finite element module of ANSYS. 50 caliber projectile
with an initial velocity of 400 m/s is used during the analyses. In the first
part of the study, 7075, 6061 and 2024 aluminum alloys are compared for their
ballistic impact resistance. Amount of perforation energies (energy absorbing
capacity of target) and projectile residual velocities of these alloys are
compared. Also, thicknesses of plates are increased up to the point at which
the plates don't exhibit full perforations for the used projectile and initial
velocity. It is seen that that residual velocity of the Al 7075 T6 is the
smallest among the used aluminum alloys which means that 7075 T6 type of
aluminum has the higher ballistic impact resistance. In the second part of the
study, six different hybrid models that have different combinations of Al 7075
and Kevlar29/Epoxy are proposed. Perforation energies and projectile residual
velocities of these proposed models are compared under ballistic impact
loadings. It was shown that the hybrid model with 6AL-6KEV orientation, was the
optimum structure to resist the ballistic impact loading among the proposed
models. Which means that the plate with this orientation has exhibited the
maximum energy absorbing characteristics.  

.

Makale detayları

Investigation of Ballistic Impact Response of Aluminum Alloys Hybridized with Kevlar/Epoxy Composites

Yazarlar: Eyüp YETER

Yayıncı: Gazi University

Ana Başlıklar: Uygulamalı fizik

Dergi: Journal of Polytechnic 2019 Vol.22 Issue 1, pp.219-227

Belge Tipi: Makale

Yayın Tarihi: 2/2019

Belge Dili: İngilizce

Document ID (Org No.): 2000590340

Sıklık: Aylık

eISSN: 2147-9429

DOI: https://doi.org/10.2339/politeknik.417758

Sayı

Yazarlar:

Eyüp YETER

Yayıncı:

Gazi University

Ana Başlıklar:

Uygulamalı fizik

Dergi:

Journal of Polytechnic 2019 Vol.22 Issue 1, pp.219-227

Belge Tipi:

Makale

Yayın Tarihi:

2/2019

Belge Dili:

İngilizce

Document ID (Org No.):

2000590340

Sıklık:

Aylık

eISSN:

2147-9429

DOI:

https://doi.org/10.2339/politeknik.417758