T800级碳纤维复合材料抗冲击性能

王莉; 熊舒; 肇研; 杨利

doi:10.11868/j.issn.1005-5053.2017.000160

T800级碳纤维复合材料抗冲击性能

doi: 10.11868/j.issn.1005-5053.2017.000160

王莉^1, ,,
熊舒²,
肇研²,
杨利¹

1.
航空工业第一飞机设计研究院，西安 710089
2.
北京航空航天大学，材料科学与工程学院，北京 100191

详细信息

通讯作者:
王莉（1988—），女，硕士，工程师，研究方向为航空复合材料，（E-mail）wanglisdu@126.com

中图分类号: TB332
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- 被引次数: 0
出版历程
- 收稿日期: 2017-09-14
- 修回日期: 2017-10-30
- 网络出版日期: 2018-09-13
- 刊出日期: 2018-06-01

Impact Resistance of T800 Carbon Fiber Composite Materials

Li WANG^{1
, ,},
Shu XIONG²,
Yan ZHAO²,
Li YANG¹

1.
AVIC The First Aircraft Institute, Xi’an 710089, China
2.
School of Materials Science and Engineering, Beihang University, Beijing 100191, China

摘要

摘要: 对相同铺层比例、不同厚度的A，B，C三组T800级碳纤维复合材料层板进行多种冲击能量的冲击实验，测试冲击后凹坑深度、剩余压缩强度及压缩破坏应变等性能。结果表明：复合材料的冲击能量-凹坑深度曲线和凹坑深度-剩余压缩强度曲线均存在拐点，A组拐点位置为0.70 mm，B组拐点位置为0.76 mm，C组拐点位置为0.45 mm，均小于目视勉强可见冲击损伤（BVID）对应的凹坑深度（1.3 mm)；同一铺层比例下，复合材料层合板厚度越大，其抗冲击损伤性能越好。
- 碳纤维复合材料 /
- 冲击后压缩 /
- 凹坑深度 /
- 拐点
Abstract: The properties such as dent depth, residual compressive strength and compressive failure strain of 3 groups of T800 carbon fiber composite laminates with the same layer ratio and different thicknesses were tested. The results show that there inflection points are existed both in impact energy-dent depth curves and dent depth-residual compression strength curves. The inflection points of the 3 groups are at the depths of 0.70 mm, 0.76 mm and 0.45 mm respectively, which are less than the depth of dent (1.3 mm) corresponding to barely visible impact damage (BVID). With the same ply ratio, the greater the thickness of composite laminates, the better the impact damage resistance.
- carbon fiber composite /
- compression after impact /
- dent depth /
- inflection point

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图 1 Instron 9350全自动落锤冲击试验机

Figure 1. Instron 9350 automatic drop hammer impact test machine

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图 2 应变片贴片位置示意图

Figure 2. Schematic diagram of patch position of strain slice

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图 3 冲击后压缩实验夹持状态

Figure 3. Clamping state of compression test after impact

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图 4 冲击能量-凹坑深度关系曲线

Figure 4. Relation curves of impact energy vs. dent depth

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图 5 凹坑深度-剩余压缩强度关系曲线

Figure 5. Relation curves of dent depth vs. residual compression strength

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图 6 凹坑深度-破坏应变关系曲线

Figure 6. Relation curves of dent depth vs. failure strain

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图 7 材料厚度-产生BVID所需能量关系曲线

Figure 7. Relation curves of thickness vs. energy of BVID

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表 1 试件铺层、厚度及冲击能量

Table 1. Specimen layer, thickness and impact energy

Number	Layer form	Thickness/mm	Impact energy/J
A	[45/0/-45/90]_3s	3.42	10，15，18，20，22，25，28，30，32，35
B	[45/0/-45/90]_4s	4.46	15，22，30，35，38，40，42，45，50，55
C	[45/0/-45/90]_5s	5.55	25，30，36，40，43，45，50，55，60，65
Note: 3s, 4s, 5s—repeating 3, 4, 5 times according to lay-up in bracket, then laying up symmetrically.

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表 2 试件冲击能量（x）-凹坑深度（y）曲线拟合公式

Table 2. Fitting formula of impact energy （x）-dent depth （y） curve

Number	Fitting formula	Correlativity, R²
A	\setlength{\voffset}{0pt} $ y = \displaystyle\frac{{0.2310 - 3180.36}}{{1 + {{\left( {\displaystyle\frac{x}{{145.69}}} \right)}^{4.90}}}} + 3180.36 $	0.9972
B	\setlength{\voffset}{0pt}$ y = \displaystyle\frac{{0.2309 - 3009.35}}{{1 + {{\left( {\displaystyle\frac{x}{{220.02}}} \right)}^{4.26}}}} + 3009.35 $	0.9976
C	\setlength{\voffset}{0pt}$ y = \displaystyle\frac{{0.2042 - 1083.64}}{{1 + {{\left( {\displaystyle\frac{x}{{254.48}}} \right)}^{4.75}}}} + 1083.64 $	0.9967

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表 3 凹坑深度（x）-剩余压缩强度（y）曲线拟合公式

Table 3. Fitting formula of dent depth （x）-residual compression strength （y） curve

Number	Fitting formula	Correlativity, R²
A	\setlength{\voffset}{0pt}$ y = \displaystyle\frac{{372.48 - 173.11}}{{1 + {{\left( {\displaystyle\frac{x}{{0.3568}}} \right)}^{1.08}}}} + 173.11 $	0.9935
B	\setlength{\voffset}{0pt}$ y = \displaystyle\frac{{584.63 - 182.81}}{{1 + {{\left( {\displaystyle\frac{x}{{0.2225}}} \right)}^{1.01}}}} + 182.81 $	0.9975
C	\setlength{\voffset}{0pt}$ y = \displaystyle\frac{{9363.34 - 190.69}}{{1 + {{\left( {\displaystyle\frac{x}{{0.00094}}} \right)}^{0.6909}}}} + 190.69 $	0.9894

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表 4 凹坑深度（x）-破坏应变（y）曲线拟合公式

Table 4. Fitting formula of dent depth （x）-destruction strain （y） curve

Number	Fitting formula	Correlativity, R²
A	\setlength{\voffset}{0pt}$ y = \displaystyle\frac{{6615.81 - 3125.36}}{{1 + {{\left( {\displaystyle\frac{x}{{0.3714}}} \right)}^{1.12}}}} + 3125.36 $	0.9933
B	\setlength{\voffset}{0pt}$ y = \displaystyle\frac{{16123.77 - 2884.85}}{{1 + {{\left( {\displaystyle\frac{x}{{0.0752}}} \right)}^{0.7760}}}} + 2884.85 $	0.9962
C	\setlength{\voffset}{0pt}$ y = \displaystyle\frac{{422854.21 - 3614.87}}{{1 + {{\left( {\displaystyle\frac{x}{{0.0011}}} \right)}^{0.8886}}}} + 3614.87 $	0.9833

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表 5 复合材料层合板的CAI_{6.7 J/mm}与CAI_BVID

Table 5. CAI_{6.7 J/mm} and CAI_BVID of composites

Number	Thickness/mm	CAI_{6.7 J/mm}/MPa	CAI_BVID/MPa	Impact energy of BVID/J
A	3.42	252	218	29
B	4.46	307	246	43
C	5.55	353	251	60

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