Dynamic Flexural Modulus and Low-Velocity Impact Response of Supercomposite^TMLaminates with Vertical Z-Axis Milled Carbon Fiber Reinforcement  

作　　者：Suman Babu Ukyam Raju P. Mantena Damian L. Stoddard Arunachalam M. Rajendran Robert D. Moser Suman Babu Ukyam;Raju P. Mantena;Damian L. Stoddard;Arunachalam M. Rajendran;Robert D. Moser(Department of Mechanical Engineering, University of Mississippi, Mississippi, USA;Materials—US Army ERDC GSL, Vicksburg, Mississippi, USA)

机构地区：[1]Department of Mechanical Engineering, University of Mississippi, Mississippi, USA [2]Materials—US Army ERDC GSL, Vicksburg, Mississippi, USA

出　　处：《Materials Sciences and Applications》2021年第4期152-170,共19页材料科学与应用期刊（英文）

摘　　要：<span style="font-family:Verdana;">In work reported here, the dynamic properties and low-velocity impact response of woven carbon/epoxy laminates incorporating a novel 3D interlaminar reinforcement concept with dense layers of Z-axis oriented milled carbon fiber Supercomposite</span>^{<span style="font-family:Verdana;">TM</span>}<span style="font-family:Verdana;"> prepregs, are presented. Impulse-frequency response vibration technique is used for non-destructive evaluation of the dynamic flexural modulus (stiffness) and loss factor (intrinsic damping) of woven carbon/epoxy control and Supercomposite</span>^{<span style="font-family:Verdana;">TM</span>}<span style="font-family:Verdana;"> laminates. Low-velocity punch-shear tests were performed on control and Supercomposite</span>^{<span style="font-family:Verdana;">TM</span>}<span style="font-family:Verdana;"> laminates according to ASTM D3763 Standard using a drop-weight impact test system. Control panels had all layers of 3K plain woven carbon/epoxy prepregs, with a dense interlaminar reinforcement of milled carbon fibers in Z-</span><span style="font-family:;" "=""> </span><span><span style="font-family:Verdana;">direction used in designing the Supercomposite</span>^{<span style="font-family:Verdana;">TM</span>}<span style="font-family:Verdana;"> laminate—both having same areal density. Impulse-frequency response vibration experiments show that with a 50% replacement of woven carbon fabric in control panel with milled carbon fibers in Z direction dynamic flexural modulus reduced 25%</span></span><span style="font-family:;" "=""> </span><span style="font-family:Verdana;">-</span><span style="font-family:;" "=""> </span><span style="font-family:Verdana;">30% (loss in stiffness) and damping increased by about the same 25%</span><span style="font-family:;" "=""> </span><span style="font-family:Verdana;">-</span><span style="font-family:;" "=""> </span><span style="font-family:Verdana;">30%. Low-velocity punch-shear tests demonstrat<span style="font-family:Verdana;">In work reported here, the dynamic properties and low-velocity impact response of woven carbon/epoxy laminates incorporating a novel 3D interlaminar reinforcement concept with dense layers of Z-axis oriented milled carbon fiber Supercomposite</span>^{<span style="font-family:Verdana;">TM</span>}<span style="font-family:Verdana;"> prepregs, are presented. Impulse-frequency response vibration technique is used for non-destructive evaluation of the dynamic flexural modulus (stiffness) and loss factor (intrinsic damping) of woven carbon/epoxy control and Supercomposite</span>^{<span style="font-family:Verdana;">TM</span>}<span style="font-family:Verdana;"> laminates. Low-velocity punch-shear tests were performed on control and Supercomposite</span>^{<span style="font-family:Verdana;">TM</span>}<span style="font-family:Verdana;"> laminates according to ASTM D3763 Standard using a drop-weight impact test system. Control panels had all layers of 3K plain woven carbon/epoxy prepregs, with a dense interlaminar reinforcement of milled carbon fibers in Z-</span><span style="font-family:;" "=""> </span><span><span style="font-family:Verdana;">direction used in designing the Supercomposite</span>^{<span style="font-family:Verdana;">TM</span>}<span style="font-family:Verdana;"> laminate—both having same areal density. Impulse-frequency response vibration experiments show that with a 50% replacement of woven carbon fabric in control panel with milled carbon fibers in Z direction dynamic flexural modulus reduced 25%</span></span><span style="font-family:;" "=""> </span><span style="font-family:Verdana;">-</span><span style="font-family:;" "=""> </span><span style="font-family:Verdana;">30% (loss in stiffness) and damping increased by about the same 25%</span><span style="font-family:;" "=""> </span><span style="font-family:Verdana;">-</span><span style="font-family:;" "=""> </span><span style="font-family:Verdana;">30%. Low-velocity punch-shear tests demonstrat

关 键 词：Supercomposite^TM Damping Ratio Dynamic Flexural Modulus Milled Carbon Fibers Low-Velocity Punch-Shear 

分 类 号：O17[理学—数学]