|Table of Contents|

Research on compressive properties of composite laminates by patching repair(PDF)

《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]

Issue:
2020年04期
Page:
103-108
Research Field:
工艺与材料
Publishing date:

Info

Title:
Research on compressive properties of composite laminates by patching repair
Author(s):
ZHANG Wanqing; LI Hongchun; SHI Yong
(Xi’an Aerospace Propulsion Institute, Xi’an 710100, China)
Keywords:
composite;  laminate;  defect;  patching repair;  compression property
PACS:
V252
DOI:
-
Abstract:
The purpose is to study the influence of internal inclusion defect, middle fold defect and impact defect on the compressive properties of composite laminates, and the effect after repairing the three defects by the patching method.The method of artificially manufacturing internal inclusion defect, middle fold defect and impact defect on composite laminates, and repairing three defects by the patching method was applied.Finally, the compression properties of defective, repaired and non-defective samples were separately tested, and the micro-morphology of defective samples were observed by SEM to analyze their failure mechanism.The test shows that the impact defect has the largest impact on the compressive strength of the sample, followed by the internal inclusion defect, and the smallest impact on the compressive strength of the sample is the middle fold defect.The patching repair has significant effect for the middle fold defect and the internal inclusion defect, and the compression performance after patching repair reaches 102.9% and 110.1% of the compression performance of non-defective sample, respectively.However, the patching repair is not ideal for the impact defect, and the compression performance after pat-ching repair only reaches 67.9% of the compression performance of non-defective sample.

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Last Update: 2020-07-30