Experimental study on relationship between processing parameters and stress wave propagation during automated fiber placement process

2017 Global Conference on Polymer and Composite Materials

材料科学;化学

Fu, H.Y.^1 ; Li, W.Q.^1 ; Sun, S.Z.^1 ; Han, Z.Y.^1

School of Mechatronics Engineering, Harbin Institute of Technology, No. 92, Xidazhi Street, Harbin

150001, China^1

关键词: Control variates;    Manufacturing defects;    Manufacturing methods;    Manufacturing process;    Processing parameters;    Propagation characteristics;    Stress amplitudes;    Stress wave propagation;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/213/1/012031/pdf
DOI  :  10.1088/1757-899X/213/1/012031

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Automated fiber placement (AFP) is an important manufacturing method of composites, which has been widely used in the field of aerospace. Unreasonable processing parameters could lead to some manufacturing defects including pores, bubbles and cracks. In this paper, the propagation characteristics of stress waves are believed to be closely related to the defects during AFP process. Experiments are conducted to collect stress wave signal under different processing parameters (pressure, velocity and temperature) during manufacturing process. And the relationship between the processing parameters and the characteristics of stress waves is explored by Control Variate Method (CVM). Finally, the effects of laying parameters on stress amplitude, response speed and duration are summarized.