China Plastics ›› 2025, Vol. 39 ›› Issue (3): 60-64.DOI: 10.19491/j.issn.1001-9278.2025.03.011

• Processing and Application • Previous Articles     Next Articles

Identification and optimization of warping defects in thermoplastic composite laminates

FENG Mengyao, XIN Chunling, REN Feng(), ZHAI Yujiao, XU Wenchong, MA Chiyuan, MA Yufei, HE Yadong()   

  1. College of Mechanical and Electrical Engineering,Beijing University of Chemical Technology,Beijing 100029,China
  • Received:2024-04-30 Online:2025-03-26 Published:2025-03-24

Abstract:

In this paper, the warping defects appearing in composite laminates produced by fiber placement was addressed. A suitable characterization method was adopted and a non⁃contact visual measurement platform based on morphological principles was established to identify these defects. Through the design of different process parameters, the optimization for solving the detect problem was performed. The relationship between warping degree and tensile performance was explored to further optimize the warping defects. The experimental results indicate that the non⁃contact visual measurement platform could identify the warping degree accurately. The warping defects were reduced with an increase in the heat gun temperature from 300 to 500 ℃. There is a negative correlation between warping degree and tensile performance. The warping can be further optimized by heating the mold.

Key words: thermoplastic composite material, automated fiber placement, warpage, canny edge detection

CLC Number: