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材料工程  2020, Vol. 48 Issue (10): 96-104    DOI: 10.11868/j.issn.1001-4381.2019.000482
  研究论文 本期目录 | 过刊浏览 | 高级检索 |
非定向有机玻璃拉伸断口形貌与拉伸温度相关性分析
熊伟腾1,2, 王云英1, 范金娟2, 肖淑华2
1. 南昌航空大学 材料科学与工程学院, 南昌 330063;
2. 中国航发北京航空材料研究院 失效分析中心, 北京 100095
Correlation analysis between tensile fracture morphology and tensile temperature of non-oriented acrylic sheet
XIONG Wei-teng1,2, WANG Yun-ying1, FAN Jin-juan2, XIAO Shu-hua2
1. School of Material Science and Engineering, Nanchang Hangkong University, Nanchang 330063, China;
2. Failure Analysis Center, AECC Beijing Institute of Aeronautical Materials, Beijing 100095, China
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摘要 为探究非定向有机玻璃断口定量表征方法及其断口形貌参数与拉伸温度的相关性,以航空有机玻璃YB-2为研究对象,首先采用体视显微镜和三维激光扫描仪测量了不同拉伸温度下的断口雾状区尺寸和表面粗糙度均值Ra,其次通过扫描电镜-盒维数法测算了断口雾状区的分形维数均值D,最后通过两个假设推算了有机玻璃断裂形成雾状区时消耗的能量,并与断口雾状区的分形维数进行联系。结果得出:当拉伸速率一定时,拉伸温度由-55℃提升至60℃,断口雾状区的尺寸l3从1.257 mm升高至4.978 mm,Ra从0.517 μm降低到0.330 μm,D从1.357升高至1.579,拉伸温度分别与断口雾状区尺寸、表面粗糙度、分形维数的拟合曲线的拟合度因子均高于0.9,拟合程度较高。研究表明:有机玻璃拉伸断口的形貌参数与其断裂条件存在一定的相关性,雾状区形成时消耗的能量与其分形维数呈正相关关系,该研究结果可为有机玻璃断口定量分析奠定一定的基础。
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熊伟腾
王云英
范金娟
肖淑华
关键词 非定向航空有机玻璃断口形貌特征分形维数    
Abstract:In order to explore the quantitative characterization method of non-oriented acrylic sheet fracture and the correlation between the fracture morphology of acrylic sheet and tensile temperature. The non-oriented acrylic sheet for aircraft was used as the research object. Firstly, the size and surface roughness of the mist region were measured by stereo microscope and 3D Laster Scanner(LEXT). Secondly, the fracture was measured by box counting method. Finally, the energy consumed by the rupture of the acrylic sheet to form the mist zone was estimated by two hypotheses and was related to the fractal dimension of the fractured mist zone. The results show that when the stretching rate is constant, the stretching temperature is raised from -55 ℃ to 60 ℃, the size of the fractured mist zone I3 is increased from 1.257 mm to 4.978 mm, and the surface roughness Raa is reduced from 0.517 μm to 0.330 μm, the fractal dimension D is increased from 1.357 to 1.579. The fitting degree factors of the fitting curves of the tensile temperature and the size, surface roughness and fractal dimension of the fracture foggy area are higher than 0.9, and there fitting degree of these curves are higher. Therefore, the morphological parameters of the tensile fracture of the acrylic sheet have a certain correlation with the fracture conditions, and the energy consumed in the formation of the mist region of the acrylic sheet is positively correlated with its fractal dimension.
Key wordsnon-oriented    acrylic sheet for aircraft    fracture    morphology characteristics    fractal dimension
收稿日期: 2019-05-24      出版日期: 2020-10-17
中图分类号:  TQ325  
通讯作者: 王云英(1963-),女,博士,教授,研究方向为高分子材料的改性、老化特征及寿命评价,联系地址:江西省南昌市丰和南大道696号南昌航空大学材料科学与工程学院(330063),E-mail:yywang4321@126.com     E-mail: yywang4321@126.com
引用本文:   
熊伟腾, 王云英, 范金娟, 肖淑华. 非定向有机玻璃拉伸断口形貌与拉伸温度相关性分析[J]. 材料工程, 2020, 48(10): 96-104.
XIONG Wei-teng, WANG Yun-ying, FAN Jin-juan, XIAO Shu-hua. Correlation analysis between tensile fracture morphology and tensile temperature of non-oriented acrylic sheet. Journal of Materials Engineering, 2020, 48(10): 96-104.
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http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2019.000482      或      http://jme.biam.ac.cn/CN/Y2020/V48/I10/96
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