CFRP层合板低速冲击响应及损伤特性研究

廖斌斌; 周建武; 林渊; 贾利勇; 王栋亮; 花争立; 郑津洋; 顾超华

doi:10.11858/gywlxb.20180699

CFRP层合板低速冲击响应及损伤特性研究

doi: 10.11858/gywlxb.20180699

廖斌斌^1,,
周建武²,
林渊³,
贾利勇⁴,
王栋亮¹,
花争立¹,
郑津洋^{1, 5,*, ,},
顾超华¹

1.
浙江大学化工机械研究所，浙江杭州　310027
2.
西北工业大学机电学院，陕西西安　710072
3.
陆军工程大学野战工程学院，江苏南京　210042
4.
中航工业第一飞机设计研究院，陕西西安　710089
5.
浙江大学流体动力与机电系统国家重点实验室，浙江杭州　310027

基金项目: 国家重点研发计划（2017YFC0805601）

详细信息

作者简介:
廖斌斌（1992－），男，博士研究生，主要从事复合材料冲击动力学研究. E-mail：hjslbb@zju.edu.cn

通讯作者:
郑津洋（1964－），男，博士，教授，主要从事先进能源承压设备研究. E-mail：jyzh@zju.edu.cn

中图分类号: O347.1; V214.8
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出版历程
- 收稿日期: 2018-12-12
- 修回日期: 2018-12-25

Low-Velocity Impact Behavior and Damage Characteristics of CFRP Laminates

1.
Institute of Process Equipment, Zhejiang University, Hangzhou 310027, China
2.
School of Mechanical Engineering, Northwestern Polytechnical University, Xi’an 710072, China
3.
College of Field Engineering, PLA Army Engineering University, Nanjing 210042, China
4.
First Aircraft Institute of Aviation Industry Corporation, Xi’an 710089, China
5.
State Key Laboratory of Fluid Power and Mechanical Systems, Hangzhou 310027, China

摘要

摘要: 为了研究碳纤维增强复合材料(Carbon Fiber Reinforced Plastics，CFRP)层合板低速冲击力学性能，开展了铺层顺序为[45₄/–45₄]_4T的CFRP层合板落锤低速冲击试验。研究了条形冲锤冲击角度和半球形冲锤直径两个影响因素下的CFRP层合板低速冲击力学响应，同时通过凹坑深度和分层损伤面积研究了层合板低速冲击损伤特性。试验结果表明：当条形冲锤冲击角度与层合板表面纤维方向平行时以及以较小直径的半球形冲锤冲击时，最大中心位移和能量耗散较大，凹坑深度和分层面积也较大；在冲锤直径和冲击角度两个单因素变量下，凹坑深度与分层损伤面积成正相关；直径为10 mm的半球形冲锤冲击层合板时，在凹坑区域存在明显的纤维断裂；14 mm和16 mm半球形冲锤冲击时，损伤虽目视可见，但未见明显纤维断裂。
- 碳纤维增强复合材料层合板 /
- 低速冲击 /
- 损伤特征 /
- 凹坑深度 /
- 分层损伤面积
Abstract: Low-velocity impact tests were performed for the [45₄/–45₄]_4T carbon fiber reinforced plastics (CFRP) laminates for exploring the low-velocity impact behaviors. The effects of impact angle of strip impactor and impactor diameter of hemispherical impactor on the impact responses of laminates are studied. Besides, the damage characteristics are evaluated by dent depth and delamination damage area simultaneously. The experimental results show that larger maximum center displacement and more energy dissipation can be caused when the impact direction of the strip impactor is parallel to the fibers in the surface plies and the impactor diameter is smaller. The dent depth and delamination damage area are also larger at the two situations above. In addition, the dent depth is positive correlated with the delamination damage area under single factor variables of impact angle and impactor diameter. There has significant fiber break around the impact area under the impact of 10 mm hemispherical impactor, but no obvious fiber break appears around the impact area for 14 mm and 16 mm impactors.
- carbon fiber reinforced plastic laminates /
- low-velocity impact /
- damage characteristics /
- dent depth /
- delamination damage area

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图 1 试验装置及夹具

Figure 1. Testing machine and the fixture

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图 2 条形冲锤和半球形冲锤

Figure 2. Strip impactor and hemispherical impactor

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图 3 条形冲锤冲击角度

Figure 3. Impactor angle of the strip impactor

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图 4 冲击后试样C扫图

Figure 4. C-scan results of all types of specimens after impact

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图 5 冲击后冲击面的损伤形貌

Figure 5. Damage at the impact face after impact

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图 6 冲锤加载示意图

Figure 6. Sketch of the impactor loading

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图 7 各试样的冲击力-时间曲线

Figure 7. Impact force-time curves of each specimens

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图 8 条形冲锤和半球形冲锤冲击下典型试样的冲击力-时间曲线

Figure 8. Typical impact force-time curves under strip and hemispherical impactors impact

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图 9 条形冲锤和半球形冲锤冲击下典型试样的冲击力-中心位移曲线

Figure 9. Typical impact force-central displacement curves under strip and hemispherical impactors impact

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图 10 条形冲锤和半球形冲锤冲击下典型试样的能量-时间曲线

Figure 10. Typical energy-time curves under strip and hemispherical impactors impact

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表 1 低速冲击测试安排

Table 1. Low-velocity impact test arrangements

Test	Key factor	Type	Impactor parameter	Impactor energy/J	Impactor velocity/ （m∙s⁻¹）	Times
1	Impactor angle	S_–45 S₀ S₄₅	Strip impactor, –45° Strip impactor, 0° Strip impactor, 45°	10	1.88	2
2	Impactor diameter	H₁₀ H₁₄ H₁₆	Hemispherical impactor, 10 mm Hemispherical impactor, 14 mm Hemispherical impactor, 16 mm	10	1.88	2

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表 2 冲击损伤测试结果

Table 2. Summary of the impact test results

Specimen	Dent depth/mm	Delamination damage area/mm²	Specimen	Dent depth/mm	Delamination damage area/mm²
S_–45	0.22	2147	H₁₀	0.30	1613
S₀	0.19	1710	H₁₄	0.23	1553
S₄₅	0.17	1651	H₁₆	0.21	1230

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