熱硬化性CFRP積層板のパンチプレス加工による穿孔の特徴と加工品質

Translated title of the contribution: Machining Quality and Characteristics of Circular Piercing Hole Produced by Punch Press in Thermosetting CFRP Laminates

松田 伸也, 黄木 景二, 矢代 茂樹

Research output: Contribution to journalArticle

Abstract

This paper presents machining quality and characteristics of circular piercing hole produced by punch press in thermosetting CFRP laminates. First, a hole was produced by using a punch with flat surface at room and elevated temperatures. After the piercing process, damages and burrs on the surfaces and the cutting planes around the hole were microscopically observed. Internal damage such as delamination was then observed using radiography. Second, the quality of the hole was examined through roundness measurement using three coordinate measuring machine. Finally, piercing process mechanism was discussed from antiplane load and displacement diagrams and cutting planes observations of the specimen during the piercing process. It was proved from X-ray radiography and quality evaluation of the hole after the piercing process at elevated temperature that the least amount of delamination was generated although the roundness was low. It was presumed from the piercing process mechanism that the roundness becomes low because the face parallel to fiber direction in the middle layers was preferentially cut.
Original languageJapanese
Pages (from-to)13-22
Number of pages10
Journal日本複合材料学会誌
Volume42
Issue number1
DOIs
Publication statusPublished - Jan 2016

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Punch presses
Piercing
Carbon fiber reinforced plastics
Laminates
Machining
Delamination
X ray radiography
Coordinate measuring machines
Radiography
Temperature
Fibers

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熱硬化性CFRP積層板のパンチプレス加工による穿孔の特徴と加工品質. / 松田伸也; 黄木景二; 矢代茂樹.

In: 日本複合材料学会誌, Vol. 42, No. 1, 01.2016, p. 13-22.

Research output: Contribution to journalArticle

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abstract = "This paper presents machining quality and characteristics of circular piercing hole produced by punch press in thermosetting CFRP laminates. First, a hole was produced by using a punch with flat surface at room and elevated temperatures. After the piercing process, damages and burrs on the surfaces and the cutting planes around the hole were microscopically observed. Internal damage such as delamination was then observed using radiography. Second, the quality of the hole was examined through roundness measurement using three coordinate measuring machine. Finally, piercing process mechanism was discussed from antiplane load and displacement diagrams and cutting planes observations of the specimen during the piercing process. It was proved from X-ray radiography and quality evaluation of the hole after the piercing process at elevated temperature that the least amount of delamination was generated although the roundness was low. It was presumed from the piercing process mechanism that the roundness becomes low because the face parallel to fiber direction in the middle layers was preferentially cut.",
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