@incollection{, 6D338A17B29C91837D787366EFC7578C , author={{YohannesRegassa} and {Debre Brehan University}}, journal={{Global Journal of Researches in Engineering}}, journal={{GJRE}}2249-45960975-586110.34257/gjre, address={Cambridge, United States}, publisher={Global Journals Organisation}1632531 } @book{b0, , title={{Numerical and Analytical Investigation of Al2O3 Ceramic-GFRP Composite Armor Systems against 7.62mm AP}} , author={{ AAyd?nel } and { ROY?ld?r?m } and { BÖgel }} , year={2005} , address={USMOS 2005, ODTÜ, Ankara} } @incollection{b1, , title={{System Considerations Concerning the Development of High Efficiency Ceramic Armors}} , author={{ WBruchey } and { EHorwath }} , booktitle={{17th Int. Sym. On Ballistics}} Midrand, South Africa; Virginia, USA , year={1998. 2008} 3 , note={Bullet Guard Corporation, Designing Bullet Resistant Protection Panel Systems} } @book{b2, , title={{The Need for Body Armor}} , author={{ HowardChapnick }} , year={November 1982} , note={Popular Photography} } @incollection{b3, , title={{Failure Mechanisms in Composite Plates Impacted by Blunt-Ended Penetrators, In: Foreign Object Impact Damage to Composites Materials}} , author={{ NCristescu } and { LEMalvern } and { RLSierakowski }} , journal={{ASTM STP}} 568 , year={1975} , publisher={American Society for Testing and Materials} } @incollection{b4, , title={{A Constitutive Model for Glass Fibre Fabric Composites under Impact}} , author={{ RDechaene } and { JDegrieck } and { LIannucci } and { MWillows }} , journal={{J. Composite Materials, v}} 36 8 , year={2002} } @book{b5, , title={{The development of body armor}} , author={{ DeidreDi Liddo } and { EmmaGeorgeHewett }} , year={1984} , publisher={Academic Publishers New York} } @incollection{b6, , title={{Aluminum Alloy Armor Plate (Heat Treatable 1-120 mm)}} DEF STAN 95-22 , booktitle={{Ministry of Defence, Defence Standard)}} , year={2004. 3 September 2004} 4 } @book{b7, , title={{Numerical simulation of ballastic of response GRP plates, composite science and technology}} , author={{ WilliamsFlanagan }} , year={1998} 58 } @incollection{b8, , title={{The Optimization of Two Component Composite Armors}} , author={{ HetheringtonFlorence } and { J }} , journal={{International Journal of Impact Engineering}} 12 3 , year={1992} } @book{b9, , title={{}} , author={{ VIConclusion } and { Recommendations }} }