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为研究层间混杂复合材料装甲板的防弹性能及其防弹机制,采用钢芯弹侵彻层间混杂复合材料装甲板。以超高分子量聚乙烯(Ultra high molecular weight polyethylene,UHMWPE)纤维、对位芳香族聚酰胺纤维作增强纤维,水性聚氨酯(Waterborne Polyurethane,WPU)树脂和环氧树脂(Epoxy resin,EP)作基体,采用热压工艺制备单向(Unidirectional,UD)结构的层间混杂复合材料装甲板。研究混杂比例、防弹面和树脂基体对混杂复合材料装甲板防弹性能的影响以及弹击后混杂复合材料装甲板的破坏形貌,分析混杂复合材料装甲板的防弹机制,并对复合材料装甲板的破坏机制进行了分析。结果表明:混杂复合材料装甲板的防弹性能优于其任一单一纤维复合材料装甲板;WPU的防弹性能要优于环氧树脂;以UHMWPE纤维复合材料充当防弹面时,混杂复合材料装甲板具有更好的防弹性能;纤维拉伸变形和装甲板分层是纤维复合材料装甲板主要的吸能方式。 相似文献
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硬质防弹纤维复合材料的研究进展 总被引:6,自引:0,他引:6
本文分三个方面,即高性能纤维的选材、纤维和树脂对防弹性能的影响以及复合材料的整体防弹机理,对硬质防弹复合材料研究中涉及的选材、成型条件和复合方式等因素,进行了较为详细的述评,尤其对超高分子量聚乙烯纤维防弹复合材料的研究给予特别关注,并指出了当前防弹复合材料领域研究的热点. 相似文献
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本文对弹道防护用先进复合材料的弹道响应研究及其在工程领域的应用现状进行了综述。首先,基于工程应用研究的试验结果,对超高分子量聚乙烯(UHMWPE)纤维、对位芳香族聚酰胺(PPTA)纤维、芳Ⅲ纤维、聚对苯撑苯并双噁唑(PBO)纤维和聚酰亚胺(PI)纤维等高性能纤维的防弹性能及其复合材料在弹道防护工程领域的应用现状进行了概述,近年来先进复合材料的防弹性能随着纤维力学性能的突破而逐渐提高;其次,讨论了先进复合材料弹道响应的影响因素及其作用机制,发现先进复合材料的塑性拉伸变形是其抵挡弹丸侵彻的主要防弹机制;最后,对弹道防护用先进复合材料的研究方向进行了展望。 相似文献
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以超高分子量聚乙烯(Ultra High Molecular Weight Polyethylene,UHMWPE)纤维、S-玻璃纤维、芳纶1414纤维和杂环芳纶纤维增强聚烯烃(Polyolefin,PO)和水性聚氨酯(Waterborne Polyurethane,WPU)树脂,采用热压工艺制备正交单向无纬(UD)结构复合材料装甲板;通过装甲板弹道极限速度测试,研究了纤维增强树脂基复合材料装甲板防弹性能的影响因素;通过体视显微镜观察装甲板侵彻破坏形貌,分析了纤维增强树脂基复合材料的破坏机制。结果表明:UHMWPE纤维增强PO树脂基复合材料的防弹性能与UHMWPE纤维的强度和模量呈正相关,但纤维模量对复合材料防弹性能的影响随着纤维模量的增大而逐渐变弱;在WPU树脂体系下,四种纤维的防弹性能由高到低依次是UHMWPE纤维、杂环芳纶纤维、芳纶1414纤维、S-玻璃纤维;纤维增强树脂基复合材料装甲板中纤维破坏方式有迎弹面纤维被剪切冲塞、中部被纤维拉伸变形后剪切、背弹面纤维被拉伸断裂,中部纤维拉伸变形是消耗子弹动能的主要方式。 相似文献
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采用S35高强型聚酰亚胺(PI)纤维作为增强体,热塑性树脂作为基体,采用热压工艺制备了织物结构和正交单向无纬(UD)结构复合材料靶板,通过弹道极限速度测试和背部变形测试,研究了增强体结构和界面结合强度对PI纤维增强热塑性树脂基复合材料防弹性能的影响。结果表明:高强型聚酰亚胺纤维表现出了优异的防弹性能;UD结构靶板更适用于防铅芯弹;织物结构靶板更适用于防破片;当界面剥离强度由5.45N/cm提高到26.44N/cm时,剥离后界面处的纤维表面形貌的破坏程度逐渐增加。当侵彻体为5.6g铅芯弹时,随着界面剥离强度的提高,复合材料靶板的防弹性能呈现出先提高后降低的趋势;并且靶板的背部变形逐渐减小,进一步证明了界面结合强度对复合材料靶板防弹性能的影响。 相似文献
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分析了纺织复合材料和陶瓷的低速冲击性能,并以此为理论基础,剖析陶瓷/复合材料装甲板受弹头冲击时的防弹机理,并建立此过程的动态分析模型,讨论和预测复合装甲的损伤和破坏,为复合材料在复合装甲上的应用和防弹能力预测提供理论分析依据。 相似文献
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We have investigated ballistic response of polyethylene/polyethylene (PE/PE) composites to impact by Uzi bullets. For comparison, limited work was carried out on PE/aramid fiber hybrids and PE fiber/Polycarbonate plate laminates. The plates exhibited an average ballistic resistance, V
50, of approximately 90 m/s per 1 kg/m2 area density. In term of the protection level per thickness, the ballistic resistance was 76 m/s per 1 mm. Visual and microscopic examinations identified indentation and delamination as the prevailing failure mechanisms. The delamination, energy calculated on the basis of a simple delamination model considering the fracture surface energy of the matrix, was shown to fully balance the dissipated kinetic energy of the bullet, while the contribution of the fiber fracture process was negligible. This is taken as strong circumstantial evidence for the significant role of this failure process in the ballistic resistance of these composites. 相似文献
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Ballistic properties of two different polymer matrix composites used for military and non-military purposes are investigated
in this study. Backside deformation and penetration speed are determined experimentally and numerically for Kevlar 29/Polivnyl
Butyral and Polyethylene fiber composites because designing armors for only penetration is not enough for protection. After
experimental ballistic tests, a model is constructed using finite element program, Abaqus. The backside deformation and penetration
speed are determined numerically. It is found that the experimental and numeric results are in agreement and Polyethylene
fiber composite has much better ballistic limit, the backside deformation, and penetration speed than those of Kevlar 29/Polivnyl
Butyral composite if areal densities are considered. 相似文献
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采用LS-DYNA非线性有限元软件对Ti/Al3Ti金属间化合物基层状(MIL)复合材料靶板的弹道侵彻过程进行了数值模拟。考察了等厚度下Ti体积分数、层数和材料梯度分布对复合材料抗侵彻性能的影响。结果表明,Ti体积分数约为20%时,靶板的抗侵彻性能最好。随着层数的增加,复合材料靶板的抗侵彻性能逐渐增强;但超过25层后,靶板的抗侵彻性能逐渐趋于稳定。不同铺层结构功能梯度板的抗侵彻性能相差较大,正向铺层梯度板的抗侵彻性能明显优于等厚均质复合材料靶板。 相似文献
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Behavior of Aramid Fiber/Ultrahigh Molecular Weight Polyethylene Fiber Hybrid Composites under Charpy Impact and Ballistic Impact 总被引:2,自引:0,他引:2
The aramid fiber/UHMWPE(ultrahigh molecular weight polyethylene)fiber hybrid composites(AF/DF) were ma-nufactured.By Charpy impact,the low velocity impact behavior of AF/DF composite was studied.And the high velocity impact behavior under ballistic impact was also investigated.The influenct of hybrid ratio on the performances of low and high velocity impact was analyzed,and hybrid structures with good impact properties under low velocity impact and high velocity were optimized.For Charpy impact, the maximal impact load increased with the accretion of the AF layers for AF/DF hybrid composites.The total impact power was reduced with the decrease of DF layers and the delamination can result in the increase of total impact power.For ballistic impact ,the DF ballistic performance was better than that of the AF and the hybrid ratio had a crucial influence.The failure morphology of AF/DF hybrid composite under Charpy impact and ballistic impact was analyzed .The AF/DF hybrid composites in suitable hybrid ratio could attain better performance than AF or DF composites. 相似文献
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三维编织复合材料相比于层合复合材料有较高的层间剪切强度和断裂韧性,因而具有更高的冲击损伤容限。用钢芯弹对三维编织复合材料作弹道贯穿测试,得到弹体的入射速度和剩余速度,并考察侵彻破坏模式。目前对三维编织复合材料弹道侵彻性能计算主要建立在连续介质假设上,从真实细观结构计算三维编织复合材料弹道冲击性能尚有一定难度,用三维结构复合材料的纤维倾斜模型在准细观结构层次上分解三维编织复合材料,就其中的一块倾斜单向板作弹道侵彻有限元计算,由弹体动能损失得到贯穿整个复合材料靶体后弹体的剩余速度。有限元计算及与弹道测试结果的比较证明在准细观层次上计算三维编织复合材料弹道冲击性能的有效性。 相似文献