Investigation of Decision Criteria for Abrasive Conditions in Multi-Small-Hole Drilling of CFRP by Blast Process

Hitoshi Fukagawa; Toshiki Hirogaki; Keisuke Shimizu; Kousuke Nishikawa

doi:10.4028/www.scientific.net/AMR.1136.119

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1136Investigation of Decision Criteria for Abrasive...

Investigation of Decision Criteria for Abrasive Conditions in Multi-Small-Hole Drilling of CFRP by Blast Process

Abstract:

Composite materials, such as CFRP, are hard-to-cut materials but useful for their specific strength. Usually creating small holes in them is done using drill tools, but tool abrasion occurs early, reducing quality, raising processing costs. Comparing drilling with other processing methods, it was revealed in a previous report that it was possible to effectively create large quantities of small holes using blasting [1]. However, such blast processing involves unknown mechanisms. In the present report, we investigated the material-removing mechanisms of blasting from the viewpoint of erosion abrasion, and looked into the most suitable method by changing hole sizes and processing conditions. The results revealed, relationships between abrasive particle size and hole accuracy or hole processing efficiency as well as the optimum abrasive combinations according to hole diameter.

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Periodical:

Advanced Materials Research (Volume 1136)

Pages:

119-124

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1136.119

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Online since:

January 2016

Authors:

Hitoshi Fukagawa, Toshiki Hirogaki, Keisuke Shimizu, Kousuke Nishikawa

Keywords:

Abrasive Blast, Abrasive Media, CFRP, Composite Materials, Hole-Preparation

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References

[1] H. Fukagawa, T. Hirogaki, I. Yamada, A. Kato, K. Shimizu and K. Nishikawa: Multi-hole Drilling Method by Abrasive Blasting for CFRP and Composite Materials: Investigation of a processing model based on abrasive erosion phenomenon, Advanced Materials Recerch Vol. 1017 (2014).

DOI: 10.4028/www.scientific.net/amr.1017.38

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[2] H. Fukagawa, T. Hirogaki and T. Kato et. al, Development of hole generation technology for Aircraft CFRP parts, Key engineering Materials, Vol. 523-534 (2012) pp.226-231.

DOI: 10.4028/www.scientific.net/kem.523-524.226

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[3] K. Shimizu, H. Fukagawa, K. Nishikawa, I. Yamada and T. Hirogaki; Impact of the Blast Media Conditions at Small-diameter Holes Processing of CFRP Plate, Japan Society for Abrasive Technology Annual Conference Proceedings(ABTEC), (2014).

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